{"id":262696,"date":"2024-09-21T06:41:16","date_gmt":"2024-09-20T22:41:16","guid":{"rendered":"\/\/m.iemloyee.com\/?p=262696"},"modified":"2024-09-20T19:45:31","modified_gmt":"2024-09-20T11:45:31","slug":"%e4%bc%af%e5%85%8b%e5%88%a9ceder%e5%9b%a2%e9%98%9fnature-nanotechnology-%e9%ab%98%e6%80%a7%e8%83%bd%e5%a4%a7%e9%a1%86%e7%b2%92%e5%b0%ba%e5%ba%a6%e9%94%b0%e5%9f%ba%e9%83%a8%e5%88%86%e6%97%a0%e5%ba%8f","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=262696","title":{"rendered":"\u4f2f\u514b\u5229Ceder\u56e2\u961fNature Nanotechnology: \u9ad8\u6027\u80fd\u5927\u9846\u7c92\u5c3a\u5ea6\u9530\u57fa\u90e8\u5206\u65e0\u5e8f\u5c16\u6676\u77f3\u578b\u9502\u79bb\u5b50\u6b63\u6781\u6750\u6599"},"content":{"rendered":"

\u9530\u57fa\u6750\u6599\u6709\u8457\u4f5c\u4e3a\u4e0b\u4e00\u4ee3\u9502\u79bb\u5b50\u7535\u6c60\u6b63\u6781\u6750\u6599\u7684\u5de8\u5927\u6f5c\u529b\uff0c\u56e0\u4e3a\u5b83\u4eec\u50a8\u91cf\u4e30\u5bcc\u3001\u6210\u672c\u4f4e\u5ec9\u4e14\u7a33\u5b9a\u3002\u5728UC Berkeley\u7684Gerbrand Ceder\u6559\u6388\u548c\u8521\u5b50\u5065\u535a\u58eb\u5728\u6700\u8fd1\u53d1\u8868\u5728Nature Nanotechnology\u4e0a\u7684\u5de5\u4f5c\u4e2d\u5c55\u793a\u4e86\u5982\u4f55\u5229\u7528\u9530\u9633\u79bb\u5b50\u7684\u8fc1\u79fb\u6027\uff0c\u5728\u5927\u9897\u7c92\u5c3a\u5bf8\u7684\u6b63\u6781\u6750\u6599\u4e2d\u5f62\u6210\u72ec\u7279\u7684\u7eb3\u7c73\u5fae\u89c2\u7ed3\u6784\uff0c\u4ece\u800c\u589e\u5f3a\u5176\u7535\u5316\u5b66\u6027\u80fd\u3002\u901a\u8fc7\u7ed3\u5408\u539f\u5b50\u5206\u8fa8\u7387 STEM\u3001\u56db\u7ef4\u626b\u63cf\u7535\u5b50\u7eb3\u7c73\u884d\u5c04\u548c\u539f\u4f4d XRD \u6280\u672f\uff0c\u90e8\u5206\u8131\u9502\u7684\u9ad8\u9530\u542b\u91cf\u65e0\u5e8f\u5ca9\u76d0\u6b63\u6781\u6750\u6599\u7ecf\u8fc7\u8f7b\u5fae\u52a0\u70ed\u540e\uff0c\u4f1a\u5f62\u6210 3 \u81f3 7 \u7eb3\u7c73\u5927\u5c0f\u7684\u90e8\u5206\u6709\u5e8f\u5c16\u6676\u77f3\u7ed3\u6784\u57df\u7684\u7eb3\u7c73\u7ed3\u6784\u3002 \u8fd9\u4e9b\u7ed3\u6784\u57df\u7684\u77ed\u76f8\u5e72\u957f\u5ea6\u6d88\u9664\u4e86\u5e38\u89c4\u5c16\u6676\u77f3\u5728 3V \u9644\u8fd1\u5b58\u5728\u7684\u4e0d\u5229\u7684\u4e24\u76f8\u9502\u5316\u53cd\u5e94\uff0c\u5c06\u5176\u8f6c\u5316\u4e3a\u56fa\u6eb6\u4f53\u3002\u8fd9\u79cd\u7eb3\u7c73\u7ed3\u6784\u4f7f\u5f97\u8be5\u6750\u6599\u5177\u5907\u826f\u597d\u7684\u500d\u7387\u6027\u80fd\uff0c\u5e76\u4e14\u5728\u5e73\u5747\u521d\u7ea7\u9897\u7c92\u5c3a\u5bf8\u7ea6\u4e3a 5 \u5fae\u7c73\u7684\uff08\u90e8\u5206\uff09\u65e0\u5e8f\u6750\u6599\u4e2d\uff0c\u63d0\u4f9b\u4e86 200 mAh\/g \u7684\u653e\u7535\u5bb9\u91cf\u3002\u8be5\u7814\u7a76\u4e0d\u4ec5\u6269\u5c55\u4e86\u5f00\u53d1\u9ad8\u6027\u80fd\u3001\u9530\u57fa\u6b63\u6781\u6750\u6599\u7684\u5408\u6210\u7b56\u7565\uff0c\u8fd8\u63d0\u4f9b\u4e86\u5173\u4e8e\u7eb3\u7c73\u5de5\u7a0b\u5c16\u6676\u77f3\u7c7b\u76f8\u7ed3\u6784\u7684\u89c1\u89e3\u3002<\/p>\n

\u5145\u7535\u5f0f\u9502\u79bb\u5b50\u7535\u6c60\u901a\u8fc7\u63d0\u4f9b\u9ad8\u80fd\u91cf\u5bc6\u5ea6\u548c\u957f\u5faa\u73af\u5bff\u547d\u7684\u80fd\u91cf\u50a8\u5b58\uff0c\u5bf9\u6280\u672f\u8fdb\u6b65\u8d77\u5230\u4e86\u91cd\u8981\u4f5c\u7528\u3002\u9502\u79bb\u5b50\u7535\u6c60\u7684\u8fdb\u5c55\u5f97\u76ca\u4e8e\u6709\u5e8f\u7ed3\u6784\uff0c\u5982\u5c42\u72b6\u548c\u5c16\u6676\u77f3\u5316\u5408\u7269\uff0c\u8fd9\u4e9b\u7ed3\u6784\u4f9d\u8d56\u4e8e\u954d (Ni) \u548c\u94b4 (Co) \u5728\u516b\u9762\u4f53\u4f4d\u70b9\u7684\u7a33\u5b9a\u6027\u4ee5\u5b9e\u73b0\u7a33\u5b9a\u7684\u5faa\u73af\u6027\u80fd\u3002\u968f\u7740\u7535\u52a8\u6c7d\u8f66\u7684\u7eed\u822a\u91cc\u7a0b\u9700\u6c42\u589e\u52a0\uff0c\u4ee5\u53ca\u4e2a\u4eba\u7535\u5b50\u4ea7\u54c1\u5bf9\u66f4\u957f\u8fd0\u884c\u65f6\u95f4\u7684\u8981\u6c42\uff0c\u954d\u548c\u94b4\u7684\u4f4e\u50a8\u91cf\u53ca\u5176\u94b4\u77ff\u5f00\u91c7\u76f8\u5173\u7684\u9053\u5fb7\u95ee\u9898\u53ef\u80fd\u4f1a\u63d0\u9ad8\u6b63\u6781\u6750\u6599\u7684\u6210\u672c\uff0c\u5e76\u5bf9\u4f9b\u5e94\u94fe\u9020\u6210\u5de8\u5927\u538b\u529b\u3002\u5176\u4ed6\u66f4\u4e3a\u4e30\u5bcc\u7684\u8fc7\u6e21\u91d1\u5c5e\uff0c\u5982\u94ec (Cr)\u3001\u9530 (Mn)\u3001\u94c1 (Fe) \u548c\u94dc (Cu)\uff0c\u7f3a\u4e4f\u954d\u548c\u94b4\u7684\u7a33\u5b9a\u6027\uff0c\u56e0\u6b64\u9700\u8981\u65b0\u7684\u6676\u4f53\u548c\u5fae\u7ed3\u6784\u8bbe\u8ba1\u624d\u80fd\u4f5c\u4e3a\u9502\u79bb\u5b50\u80fd\u91cf\u50a8\u5b58\u6750\u6599\u3002 \u9530\u57fa\u6b63\u6781\u6750\u6599\u5c24\u5177\u5438\u5f15\u529b\uff0c\u56e0\u4e3a\u9530\u77ff\u7269\u7684\u6bd2\u6027\u4f4e\u3001\u6210\u672c\u4f4e\uff0c\u4e14Mn\u00b3\u207a\/Mn\u2074\u207a\u6c27\u5316\u8fd8\u539f\u5bf9\u7684\u7535\u538b\u8303\u56f4\u7406\u60f3\u3002\u5145\u7535\u6001\u7684Mn\u2074\u207a\u72b6\u6001\u9ad8\u5ea6\u7a33\u5b9a\uff0c\u4f7f\u7535\u6c60\u5728\u96c6\u6210\u7535\u82af\u65f6\u7684\u5b89\u5168\u6027\u548c\u80fd\u91cf\u5bc6\u5ea6\u65b9\u9762\u6709\u6240\u63d0\u9ad8\u3002<\/p>\n

\u5728\u8fc7\u53bb\u5341\u5e74\u4e2d\uff0c\u5bcc\u9502\u65e0\u5e8f\u5ca9\u76d0 (DRX) \u6750\u6599\u5c55\u793a\u4e86\u4f7f\u7528\u5bcc\u542b\u5730\u7403\u5143\u7d20\uff08\u5305\u62ec\u9530\u3001\u94ec\u548c\u949b\uff09\u7684\u6f5c\u529b\u5b9e\u73b0\u9ad8\u80fd\u91cf\u5bc6\u5ea6\u3002\u7136\u800c\uff0cDRX \u6750\u6599\u7684\u5b9e\u9645\u5e94\u7528\u9700\u8981\u5c06\u9897\u7c92\u7403\u78e8\u5230\u7eb3\u7c73\u5c3a\u5bf8\u4ee5\u5b9e\u73b0\u5408\u7406\u7684\u500d\u7387\u6027\u80fd\u3002\u7eb3\u7c73\u6750\u6599\u7684\u9ad8\u8868\u9762\u79ef\u52a0\u5267\u4e86\u7535\u6c60\u4e2d\u7684\u526f\u53cd\u5e94\uff0c\u5e76\u5bfc\u81f4\u7535\u6781\u5bc6\u5ea6\u964d\u4f4e\u3002\u56e0\u6b64\uff0c\u80fd\u591f\u5728\u4fdd\u6301\u9ad8\u6027\u80fd\u7684\u540c\u65f6\u4f7f\u7528\u8f83\u5927\u9897\u7c92\u5c3a\u5bf8\u5bf9\u4e8eDRX\u6210\u4e3a\u5546\u4e1a\u4e0a\u53ef\u884c\u7684\u6280\u672f\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

\u5728\u6b64\u5de5\u4f5c\u4e2d\uff0c\u901a\u8fc7\u539f\u5b50\u5206\u8fa8\u7387\u626b\u63cf\u7a7f\u900f\u5f0f\u7535\u5b50\u663e\u5fae\u955c (STEM) \u548c\u626b\u63cf\u7535\u5b50\u7eb3\u7c73\u884d\u5c04 (SEND) \u8fdb\u884c\u7684\u6df1\u5165\u539f\u5b50\u8868\u5f81\u7814\u7a76\uff0c\u5c55\u793a\u4e86\u4e00\u79cd\u9ad8\u9530\u542b\u91cf\u7684 DRX \u53ef\u4ee5\u8f6c\u53d8\u4e3a\u4e00\u79cd\u72ec\u7279\u7684\u7eb3\u7c73\u7ed3\u6784\u6750\u6599\uff0c\u8be5\u6750\u6599\u4e2d\u7531\u76f8\u5e72\u957f\u5ea6\u4e3a 3 \u5230 7 nm\u7684\u53cd\u76f8\u8fb9\u754c\u7ec4\u6210\u65e0\u5e8f\u5c16\u6676\u77f3\u57df\u3002\u8fd9\u79cd\u5fae\u89c2\u7ed3\u6784\u5c06\u9502\u5316\u70ed\u529b\u5b66\u548c\u7535\u538b\u66f2\u7ebf\u6240\u51b3\u5b9a\u7684\uff08\u7eb3\u7c73\uff09\u957f\u5ea6\u5c3a\u5ea6\u4e0e\u9897\u7c92\u5c3a\u5bf8\u89e3\u8026\uff0c\u4fdd\u6301\u9897\u7c92\u8db3\u591f\u5927\u4ee5\u5b9e\u73b0\u826f\u597d\u7684\u5faa\u73af\u6027\u80fd\u3002\u7eb3\u7c73\u5c3a\u5bf8\u5c16\u6676\u77f3\u72b6\u57df\u7684\u5c0f\u76f8\u5e72\u957f\u5ea6\u5c06\u5e38\u89c4\u5c16\u6676\u77f3\u7684\u4e24\u76f8\u53cd\u5e94\u6539\u53d8\u4e3a\u56fa\u6eb6\u4f53\uff0c\u4ece\u800c\u6d88\u9664\u4e86\u4e00\u4e2a\u4e3b\u8981\u969c\u788d\uff0c\u4f7f\u5f97\u6b64\u6750\u6599\u5728\u5927\u9897\u7c92\u5c3a\u5ea6\u4e0b\u5b9e\u73b0\u9ad8\u80fd\u91cf\u5bc6\u5ea6\u548c\u500d\u7387\u6027\u80fd\u3002\u6587\u7ae0\u5c06\u8fd9\u79cd\u7ed3\u6784\u79f0\u4e3a\u03b4\u76f8\uff0c\u5e76\u5c55\u793a\u5b83\u53ef\u4ee5\u901a\u8fc7\u5316\u5b66\u8131\u9502\u548c\u4f4e\u6e29\u52a0\u70ed\u7684\u4e24\u6b65\u8fc7\u7a0b\u5b9e\u73b0\u3002<\/p>\n

DRX <\/strong>\u548c\u03b4\u7684\u7ed3\u6784\u8868\u5f81<\/strong><\/p>\n

\u6587\u7ae0\u9009\u62e9\u4e86 Li1.2<\/sub>Mn0.65<\/sub>Ti0.15<\/sub>O1.9<\/sub>F0.1<\/sub> (L12M65)\u4f5c\u4e3a\u7814\u7a76\u7684\u6750\u6599\uff0c\u56e0\u4e3a\u5b83\u7684\u9ad8\u9530\u542b\u91cf\u548c\u4f4e\u949b\u542b\u91cf\u5df2\u88ab\u8bc1\u660e\u5728\u7535\u5316\u5b66\u5faa\u73af\u4e2d\u53ef\u4fc3\u8fdb\u6027\u80fd\u7684\u63d0\u5347\u300220% \u7684\u8fc7\u91cf\u9502\u6709\u52a9\u4e8e\u826f\u597d\u7684\u9502\u79bb\u5b50\u903e\u6e17\u3002\u56fe 1A\u89e3\u91ca\u4e86\u4eceL12M65\u5408\u6210\u03b4\u76f8\u7684\u8fc7\u7a0b\u6bcf\u4e00\u6b65\u5408\u6210\u8fc7\u7a0b\u4e2d\u7684\u7ed3\u6784\u53d8\u5316\u3002\u521d\u59cb\u7684 DRX L12M65 \u662f\u901a\u8fc7\u6807\u51c6\u56fa\u6001\u6cd5\u5408\u6210\u7684\u3002\u56fe 1B \u4e2d\u7684\u540c\u6b65\u8f90\u5c04 X \u5c04\u7ebf\u884d\u5c04 (XRD) \u56fe\u8c31\u8bc1\u5b9e\u4e86L12M65 \u662f\u7eaf DRX \u76f8\u3002\u57fa\u4e8e\u5ca9\u76d0\u7ed3\u6784\uff08Fm-3m\uff09\u7684 Rietveld \u7cbe\u4fee\u62df\u548c\u51fa 4.133 \u00c5 \u7684\u6676\u683c\u53c2\u6570\u3002\u901a\u8fc7\u626b\u63cf\u7535\u5b50\u663e\u5fae\u955c (SEM) \u6d4b\u91cf\u7684\u9897\u7c92\u5f62\u6001\u8868\u660e\uff0cL12M65 \u7684\u9897\u7c92\u5927\u5c0f\u4e3a 20 \u00b5m\u3002\u5728 45 \u00b0C \u4e0b\u7528 0.1 M NO\u2082BF\u2084 \u6eb6\u6db2\u5904\u7406 2 \u5929\u540e\u5b9e\u73b0\u4e86 Li0.7<\/sub>Mn0.65<\/sub>Ti0.15<\/sub>O1.9<\/sub>F0.1<\/sub> (L07M65-D) \u7684\u8131\u9502\u3002\u56fe 1C \u4e2d\u7684 XRD \u663e\u793a\u4e86\u5cf0\u4f4d\u79fb\u5411\u9ad8\u89d2\u5ea6\u79fb\u52a8\uff0c\u9a8c\u8bc1\u4e86\u6b64\u6750\u6599\u5747\u5300\u8131\u9502\u3002\u57fa\u4e8e\u5ca9\u76d0\u7ed3\u6784 (Fm-3m) \u7684 L07M65-D Rietveld \u7cbe\u4fee\u62df\u548c\u5f97\u5230\u4e864.067 \u00c5 \u7684\u7cbe\u4fee\u6676\u683c\u53c2\u6570\u30022.13\u00b0 \u5904 (111) \u5cf0\u5f3a\u5ea6\u7684\u589e\u52a0\u53ef\u80fd\u8868\u660e \u03b4 \u76f8\u7684\u51fa\u73b0\u3002\u7ecf\u8fc7 200 \u00b0C \u7684\u52a0\u70ed\u5904\u7406 2 \u5c0f\u65f6\u540e\uff0cL07M65-DH \u7684 (111) \u5cf0\u5f3a\u5ea6\u8fdb\u4e00\u6b65\u589e\u52a0\uff08\u56fe 1D\uff09\uff0cSEM \u8868\u660e\u5e73\u5747\u9897\u7c92\u5927\u5c0f\u4e3a 12 \u00b5m\u3002\u540c\u65f6\uff0c(111)\u3001(311) \u548c (333) \u5cf0\u7684\u5c55\u5bbd\u8f83\u5927\uff0c\u8868\u660e\u8fd9\u79cd\u9633\u79bb\u5b50\u6709\u5e8f\u7684\u76f8\u5e72\u957f\u5ea6\u8f83\u77ed\u3002\u57fa\u4e8e\u5c16\u6676\u77f3\u7ed3\u6784\uff08Fd-3m\uff09\u7684 Rietveld \u7cbe\u4fee\u6a21\u578b\uff0c\u5e76\u5bf9 Bragg \u5cf0\u7684\u5947\u6570\u6676\u9762\u6307\u6570\u5e94\u7528\u9009\u62e9\u6027\u5c55\u5bbd\uff0c\u5f97\u5230Rwp= 8.86%\u7684\u62df\u5408\u5ea6\uff0c\u7cbe\u4fee\u6676\u683c\u53c2\u6570\u4e3a 8.211 \u00c5\u3002<\/p>\n

\"\"<\/p>\n

Fig. 1. Phase evolution of L12M65.<\/p>\n

\u4e3a\u7814\u7a76\u53cd\u5e94\u673a\u7406\uff0c\u6587\u7ae0\u8fdb\u4e00\u6b65\u63a2\u8ba8\u4e86\u90e8\u5206\u8131\u9502\u7684 L07M65-D\u901a\u8fc7\u539f\u4f4d XRD \u5728 100 \u81f3 600 \u00b0C \u52a0\u70ed\u65f6\u7ed3\u6784\u53ef\u80fd\u4ea7\u751f\u7684\u53d8\u5316\uff08\u56fe 2A\uff09\u3002\u56fe 2B \u663e\u793a\u4e86 L07M65-D \u5728\u6bcf\u4e2a\u6e29\u5ea6\u4e0b\u52a0\u70ed 20 \u5206\u949f\u540e\u7684XRD \u56fe\u8c31\u3002\u5728 100 \u00b0C \u65f6\uff0cL07M65-D \u663e\u793a\u51fa\u6765\u81ea DRX \u7ed3\u6784\u7684\u4e3b\u8981 (002) \u548c (022) \u5cf0\u3002\u5728 150 \u81f3 200 \u00b0C \u4e4b\u95f4\uff0c\u5e26\u6709\u5947\u6570\u6676\u9762\u6307\u6570\u7684\u884d\u5c04\u5cf0\uff08\u4f8b\u5982 2.13\u00b0 \u5904\u7684 (111) \u5cf0\u548c 4.21\u00b0 \u5904\u7684 (311) \u5cf0\uff09\u5c55\u5bbd\u589e\u52a0\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u56fe 2C \u4e2d\u5bf9 (002) \u548c (022) \u5cf0\u7684\u653e\u5927\u56fe\u663e\u793a\uff0c\u8fd9\u4e9b\u76d0\u5ca9\u7ed3\u6784\u5bf9\u5e94\u7684\u5cf0\u5e76\u672a\u5c55\u5bbd\uff0c\u8868\u660e\u9634\u79bb\u5b50\u6676\u683c\u5ef6\u4f38\u7684\u6676\u7c92\u5927\u5c0f\u4fdd\u6301\u4e0d\u53d8\u3002\u5f53\u52a0\u70ed\u6e29\u5ea6\u4ece 250 \u589e\u52a0\u81f3 500 \u00b0C \u65f6\uff0c\u5e26\u6709\u5947\u6570\u6676\u9762\u6307\u6570\u7684\u884d\u5c04\u5cf0\u53d8\u5f97\u66f4\u5c16\u9510\u4e14\u5f3a\u5ea6\u589e\u52a0\uff08\u56fe 2A-B\uff09\u3002\u6b64\u5916\uff0c\u56fe 2C \u4e2d \u03b4 \u76f8\u7684 (002) \u548c (022) \u5cf0\u5728\u7ea6 5.11\u00b0 \u548c 7.23\u00b0 \u5904\u53d1\u751f\u4e86\u5206\u88c2\uff0c\u663e\u793a\u51fa\u4e00\u4e2a\u65b0\u76f8\uff0c\u5176\u5cf0\u4f4d\u4e8e 5.04\u00b0 \u548c 7.14\u00b0 \u5904\uff0c\u4e14\u6240\u6709\u5e26\u6709\u5076\u6570\u6676\u9762\u6307\u6570\u7684\u884d\u5c04\u5cf0\u90fd\u53ef\u4ee5\u89c2\u5bdf\u5230\u5cf0\u7684\u5206\u88c2\u3002\u5f53\u6e29\u5ea6\u8d85\u8fc7 500 \u00b0C \u65f6\uff0c\u6240\u6709\u5cf0\u53d8\u5f97\u66f4\u52a0\u5c16\u9510\u4e14\u5cf0\u5f3a\u5ea6\u589e\u52a0\uff08\u56fe 2B\uff09\u3002\u9274\u4e8e \u03b4 \u76f8\u4e2d\u7684\u5c16\u6676\u77f3\u578b\u9633\u79bb\u5b50\u6709\u5e8f\uff0c\u65b0\u76f8\u5f88\u53ef\u80fd\u662f\u7531\u52a0\u70ed\u5f15\u8d77\u8fd8\u539f\u800c\u4ea7\u751f\u7684\u5177\u6709\u8f83\u5927\u6676\u683c\u53c2\u6570\u7684\u5c16\u6676\u77f3\u76f8\u3002\u5bf9\u4e8e\u8131\u9502\u540e\u5728 500 \u548c 600 \u00b0C \u4e0b\u52a0\u70ed\u7684\u6837\u54c1\uff0c\u5176\u7535\u538b\u66f2\u7ebf\u663e\u793a 4 V \u9644\u8fd1\u7684\u5bb9\u91cf\u589e\u52a0\uff0c3 V \u9644\u8fd1\u7684\u5bb9\u91cf\u51cf\u5c11\uff0c\u66f4\u50cf\u662f\u4e00\u4e2a\u6709\u5e8f\u7684\u5c16\u6676\u77f3\u76f8\u3002\u5728\u8fc7\u9ad8\u6e29\u5ea6\u4e0b\uff0c\u03b4 \u76f8\u9010\u6e10\u8f6c\u53d8\u4e3a\u6709\u5e8f\u7684\u5c16\u6676\u77f3\u76f8\u3002\u56e0\u6b64\uff0c\u6587\u7ae0\u5c06\u91cd\u70b9\u653e\u5728 200 \u00b0C \u52a0\u70ed\u5904\u7406\u7684\u6837\u54c1\u4e0a\u3002<\/p>\n

\"\"<\/p>\n

Fig. 2. In-situ heating XRD of L07M65-D.<\/p>\n

\u03b4<\/strong> \u76f8\u7684\u539f\u5b50\u5c3a\u5ea6\u8868\u5f81<\/strong><\/p>\n

\u4e3a\u4e86\u66f4\u8be6\u7ec6\u5730\u4e86\u89e3\u6837\u54c1\u5728\u5316\u5b66\u8131\u9502\u548c\u52a0\u70ed\u8fc7\u7a0b\u4e2d\u7684\u7ed3\u6784\u6f14\u53d8\uff0c\u6587\u7ae0\u5bf9 L12M65\uff08\u521d\u59cb\u6837\u54c1\uff09\u3001L07M65-D\uff08\u8131\u9502\u540e\uff09\u548c L07M65-DH\uff08\u8131\u9502\u540e\u7ecf 200\u00b0C \u52a0\u70ed\u5904\u7406\uff09\u8fdb\u884c\u4e86\u56db\u7ef4\u626b\u63cf\u7535\u5b50\u7eb3\u7c73\u884d\u5c04\uff08SEND\uff09\u8868\u5f81\u3002\u56fe 3A \u663e\u793a\u4e86 L12M65 \u7684\u9ad8\u89d2\u73af\u5f62\u6697\u573a\uff08HAADF\uff09\u56fe\u50cf\uff0cSEND \u56fe\u6848\u5728\u6b64\u57fa\u7840\u4e0a\u8fdb\u884c\u4e86\u6536\u96c6\u3002\u8fd9\u4e2a\u9897\u7c92\u7684\u884d\u5c04\u56fe\u6848\u7684\u5e73\u5747\u503c\u663e\u793a\u5728\u56fe 3B \u4e2d\u3002\u5c16\u9510\u7684\u884d\u5c04\u70b9\u8868\u660e\u539f\u59cb DRX \u9897\u7c92\u5177\u6709\u5f88\u9ad8\u7684\u7ed3\u6676\u5ea6\u3002\u5e73\u5747\u884d\u5c04\u56fe\u6848\u663e\u793a\u884d\u5c04\u70b9\u4e0a\u6709\u5f27\u5f62\uff0c\u8868\u660e\u8fd9\u4e2a\u4e3b\u8981\u4e3a\u5355\u6676\u7684\u9897\u7c92\u6709\u8f7b\u5fae\u7684\u9762\u5185\u65cb\u8f6c\u53d8\u5316\u3002\u4ece\u56fe3A \u4e2d\u6807\u8bb0\u4e3a\u7ea2\u70b9\u7684\u533a\u57df\u9009\u51fa\u7684\u884d\u5c04\u56fe\u6848\uff08\u6240\u6709\u56fe\u6848\u5747\u53ef\u5f52\u4e3a\u5ca9\u76d0\u7ed3\u6784\uff09\u663e\u793a\u5e76\u6807\u5b9a\u5728\u56fe 3C \u4e2d\uff0c\u8868\u660e\u6ca1\u6709\u5176\u4ed6\u76f8\u7684\u5b58\u5728\u3002<\/p>\n

\u5316\u5b66\u8131\u9502\u540e\u7684 L07M65-D \u9897\u7c92 (Fig 3D) \u7684\u5e73\u5747 SEND \u56fe\u6848\u663e\u793a\u5728\u56fe 3E \u4e2d\u3002\u6839\u636e XRD \u7ed3\u6784\u4fe1\u606f\u5bf9\u9009\u5b9a\u70b9\u7684\u884d\u5c04\u56fe\u6848\u8fdb\u884c\u6807\u5b9a\uff0c\u6587\u7ae0\u53ef\u4ee5\u7ed8\u5236\u51fa \u03b4 \u76f8\u7684\u7a7a\u95f4\u8303\u56f4\u3002\u56fe 3F \u663e\u793a\u4e86 \u03b4 \u76f8\u7684\u7a7a\u95f4\u5206\u5e03\u3002\u03b4 \u76f8\u7684\u5f3a\u5ea6\u5728\u8868\u9762\u5c42\uff0850 nm\uff09\u4e2d\u9ad8\u4e8e\u5185\u90e8\u533a\u57df\u3002\u7ed3\u679c\u8868\u660e\uff0c\u5927\u90e8\u5206 DRX \u5230 \u03b4 \u7684\u8f6c\u53d8\u5728\u8131\u9502\u8fc7\u7a0b\u4e2d\u4ece\u8868\u9762\u5f00\u59cb\u3002\u7136\u800c\uff0c\u5373\u4f7f\u5728\u5185\u90e8\u533a\u57df\uff0c\u4e5f\u5b58\u5728\u663e\u8457\u7684 DRX \u5230 \u03b4 \u7684\u8f6c\u53d8\u533a\u57df\u3002\u6587\u7ae0\u5bf9 L07M65-DH \u6837\u54c1\u8fdb\u884c\u4e86\u7c7b\u4f3c\u7684\u7a0b\u5e8f\uff0c\u4ee5\u7ed8\u5236 \u03b4 \u76f8\u7684\u8303\u56f4\u3002\u8be5\u6837\u54c1\u7ecf\u5316\u5b66\u8131\u9502\u540e\uff0c\u968f\u540e\u5728 200\u00b0C \u4e0b\u52a0\u70ed 2 \u5c0f\u65f6\u3002\u56fe 3G \u663e\u793a\u4e86\u9897\u7c92\u7684 STEM-HAADF \u56fe\u50cf\uff0c\u56fe 3H \u663e\u793a\u4e86\u5e73\u5747 SEND \u884d\u5c04\u56fe\u6848\u3002\u56fe 3I \u663e\u793a\uff0c\u52a0\u70ed\u540e\u6574\u4e2a\u9897\u7c92\u5747\u5df2\u8f6c\u53d8\u4e3a \u03b4 \u76f8\u3002\u52a0\u70ed\u540e\u7684 \u03b4 \u76f8\u4fe1\u53f7\u5f3a\u5ea6\u663e\u8457\u63d0\u9ad8\uff0c\u8868\u660e\u70ed\u5904\u7406\u5bf9\u4e8e \u03b4 \u76f8\u7684\u5b8c\u5168\u5f62\u6210\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

\"\"<\/p>\n

Fig. 3 SEND Characterization of L12M65, L07M65-D, and L07M65-D<\/p>\n

\u4e3a\u4e86\u8be6\u7ec6\u7814\u7a76 \u03b4 \u76f8\u4e2d\u7684\u9633\u79bb\u5b50\u6392\u5217\uff0c\u6587\u7ae0\u5728 L07M65-DH \u6837\u54c1\u7684\u9897\u7c92\u4e0a\u7ed3\u5408\u4e86\u539f\u5b50\u5206\u8fa8\u7387\u7684 HAADF \u6210\u50cf\u4e0e SEND\u3002\u56fe 4A \u663e\u793a\u4e86\u8be5\u9897\u7c92\u7684\u5e73\u5747 SEND \u56fe\u6848\u3002\u56fe 4B \u663e\u793a\u4e86 \u03b4 \u76f8\u7279\u6709\u7684\u884d\u5c04\u5cf0\u6574\u5408\u5e76\u7528\u4ece SEND \u56fe\u6848\u83b7\u5f97\u7684\u5b8c\u6574\u6563\u5c04\u8303\u56f4\uff08\u4ece 0.175 \u00c5\u207b\u00b9 \u5230 1.2 \u00c5\u207b\u00b9\uff09\u8fdb\u884c\u5f52\u4e00\u5316\uff0c\u786e\u8ba4\u6574\u4f53\u6750\u6599\u8f6c\u53d8\u4e3a \u03b4 \u76f8\u3002\u56fe 4C\u4e3a\u56fe 4B \u4e2d\u767d\u8272\u65b9\u6846\u533a\u57df\u9009\u51fa\u7684\u566a\u58f0\u8fc7\u6ee4\u7684\u539f\u5b50\u5206\u8fa8\u7387\u56fe\u50cf\u3002\u56fe 4D \u4e3a\u56fe 4C \u7684\u5feb\u901f\u5085\u7acb\u53f6\u53d8\u6362\u3002\u56fe 4D \u4e2d\u63d2\u56fe\u4e2d\u6807\u8bb0\u4e3a\u7ea2\u8272\u548c\u84dd\u8272\u5706\u5708\u7684\u5c16\u6676\u77f3\u578b\u5cf0\u7684\u5085\u7acb\u53f6\u53cd\u53d8\u6362\u663e\u793a\u5728\u56fe 4D \u4e2d\u3002\u6839\u636e\u7528\u4e8e\u83b7\u5f97\u5b83\u4eec\u7684\u9694\u79bb\u9891\u7387\uff0c\u53ef\u4ee5\u5c06\u56fe 4D \u4e2d\u8fc7\u6ee4\u56fe\u50cf\u7684\u6761\u7eb9\u8fdb\u884c\u4e86\u989c\u8272\u7f16\u7801\uff0c\u5e76\u89c2\u5bdf\u5230\u5176\u4e2d\u4e00\u79cd\u5c16\u6676\u77f3\u6709\u5e8f\u6392\u5217\u4e0e\u53e6\u4e00\u79cd\u6392\u5217\u76f8\u63a5\u4ea7\u751f\u7684\u53cd\u76f8\u7574\u754c\uff08anti-phase boundaries\uff09\u7684\u666e\u904d\u5b58\u5728\uff0c\u4f8b\u5982\u56fe4D\u4e2d\u65b9\u6846\u5185\u7684\u533a\u57df\u3002\u6b64\u5916\uff0c\u5728\u5c16\u6676\u77f3\u9886\u57df\u4e4b\u95f4\u8fd8\u89c2\u5bdf\u5230\u6781\u5c0f\u7684\u65e0\u5e8f\u533a\u57df\u3002\u901a\u8fc7\u8ba1\u7b97\u53cd\u76f8\u7574\u754c\u4e4b\u95f4\u7684\u6676\u683c\u6761\u7eb9\u7684\u5e73\u5747\u6570\u91cf\uff0c\u03b4 \u76f8\u7684\u76f8\u5e72\u957f\u5ea6\u4f30\u8ba1\u8303\u56f4\u4e3a 3 \u5230 7 nm\uff0c\u5e76\u4e0e\u56fe 1D \u4e2d\u7684 (111) XRD \u5cf0\u5e94\u7528 Scherrer \u65b9\u7a0b\u5f97\u5230\u7684\u8ba1\u7b97\u76f8\u5e72\u957f\u5ea6\u4e00\u81f4\u3002<\/p>\n

\"\"<\/p>\n

Fig. 4 Multimodal characterization of L07M65-DH.<\/p>\n

\u03b4<\/strong> \u76f8\u7684\u7535\u5316\u5b66\u6027\u80fd<\/strong><\/p>\n

L07M65-DH \u548c L12M65 \u7684\u7535\u5316\u5b66\u6027\u80fd\u901a\u8fc7\u5728 20 mAh\/g \u7684\u7535\u6d41\u5bc6\u5ea6\u4e0b\u5728 2-4.8 V \u8303\u56f4\u5185\u8fdb\u884c\u7684\u6052\u7535\u6d41\u5faa\u73af\u6027\u80fd\u3002\u4e24\u4e2a\u6837\u54c1\u5728\u5236\u4f5c\u6210\u6b63\u6781\u540e\u90fd\u4fdd\u7559\u4e86\u7ea6 5\u03bcm \u7684\u5e73\u5747\u9897\u7c92\u5927\u5c0f\u3002\u5982\u56fe 5A \u6240\u793a\uff0cL07M65-DH \u5728\u9996\u6b21\u653e\u7535\u4e2d\u5f97\u5230\u4e86 201 mAh\/g \u7684\u5bb9\u91cf\uff0c\u663e\u8457\u9ad8\u4e8e L12M65 \u7684 159 mAh\/g\u3002\u8fd9\u4e00\u6539\u8fdb\u5728 2-4.6 V\u8303\u56f4\u5185\u4e5f\u5f97\u4ee5\u4fdd\u6301\uff08\u56fe 5C\uff09\u3002L12M65\uff08\u9ed1\u8272\uff09\u663e\u793a\u51fa\u659c\u5761\u578b\u7535\u538b\u66f2\u7ebf\uff0c\u800c L07M65-DH\uff08\u84dd\u8272\uff09\u663e\u793a\u51fa\u7c7b\u4f3c\u5e73\u53f0\u7684 4 V \u548c 3 V \u533a\u57df\uff0c\u4e14 3 V \u533a\u57df\u6bd4 4 V \u533a\u57df\u957f\u3002L07M65-DH \u5728\u5faa\u73af\u8fc7\u7a0b\uff08\u56fe5D\uff09\u4e2d\u8fbe\u5230\u4e86\u66f4\u9ad8\u7684\u80fd\u91cf\u5bc6\u5ea6\uff08\u5728 2-4.8 V \u8303\u56f4\u5185\u4e3a 645 Wh\/kg\uff0c\u76f8\u6bd4\u4e4b\u4e0b L12M65 \u4e3a 555 Wh\/kg\uff09\u3002\u53e6\u5916\uff0c\u4ece L12M65 \u5230 L07M65-DH \u7684\u5bb9\u91cf\u589e\u52a0\u7684\u540c\u65f6\uff0c\u500d\u7387\u6027\u80fd\u4e5f\u5f97\u5230\u63d0\u9ad8\u3002\u901a\u8fc7\u6d4b\u8bd5 L12M65 \u548c L07M65-DH \u5728 50 mA\/g \u5230 500 mA\/g \u8303\u56f4\u5185\u7684\u7535\u6d41\u5bc6\u5ea6\u4e0b\u7684\u6027\u80fd\u53d1\u73b0\uff0c\u867d\u7136\u539f\u59cb\u7684 L12M65 \u5728 500 mA\/g \u4e0b\u4ec5\u653e\u51fa68 mAh\/g\u5bb9\u91cf\uff0820 mA\/g \u7684 43%\uff09\uff08\u56fe 5E\uff09\uff0c\u4f46\u8f6c\u53d8\u4e3a L07M65-DH \u540e\uff0c\u5728 500 mA\/g \u4e0b\u5bb9\u91cf\u63d0\u9ad8\u5230 110 mAh\/g\uff08\u56fe 5F\uff09\u3002\u8fd9\u6837\u7684\u9ad8\u80fd\u91cf\u548c\u5feb\u5145\/\u653e\u7535\u80fd\u529b\u4e4b\u524d\u4ec5\u5728\u7eb3\u7c73\u5c3a\u5bf8 DRX \u6750\u6599\u4e2d\u83b7\u5f97\uff0c\u4f46\u5728\u5fae\u7c73\u5c3a\u5bf8\u9897\u7c92\u4e2d\u4ece\u672a\u5b9e\u73b0\u8fc7\u3002<\/p>\n

\"\"<\/p>\n

Fig. 5 Electrochemical performance of L12M65 and L07M65-DH.<\/p>\n

\u4e3a\u4e86\u4e86\u89e3\u7535\u5316\u5b66\u5faa\u73af\u8fc7\u7a0b\u4e2d\u7684\u7ed3\u6784\u53d8\u5316\uff0c\u56fe 6A\u5c55\u793a\u4e86\u5728 L07M65-DH \u4e8e 1.5-4.8 V \u8303\u56f4\u5185\u8fdb\u884c\u5faa\u73af\u65f6\u83b7\u5f97\u7684\u539f\u4f4dXRD\u6570\u636e\u3002\u4e3a\u4e86\u6bd4\u8f83\uff0c\u56fe 6B \u663e\u793a\u4e86\u5728\u76f8\u540c\u6761\u4ef6\u4e0b\u6709\u5e8f LiMn\u2082O\u2084 \u5c16\u6676\u77f3\u7684\u539f\u4f4dXRD\u6570\u636e\u3002\u5bf9\u4e8e L07M65-DH\uff0c(222)\u3001(400) \u548c (440) \u5cf0\u5728\u9502\u63d2\u5165\u8fc7\u7a0b\u4e2d\u6301\u7eed\u5411\u4f4e\u89d2\u5ea6\u79fb\u52a8\uff0c\u8fd9\u4e0e\u653e\u7535\u8fc7\u7a0b\u4e2d\u6676\u683c\u53c2\u6570\u7684\u589e\u52a0\u4e00\u81f4\u3002\u5f53\u653e\u7535\u81f3 2.7 V \u4ee5\u4e0b\u65f6\uff0c(400) \u548c (440) \u5cf0\u51fa\u73b0\u5206\u88c2\uff0c\u6307\u793a\u51fa\u56db\u65b9\u76f8\u7684\u5f62\u6210\u3002\u7136\u800c\uff0c\u7acb\u65b9\u76f8\u548c\u56db\u65b9\u76f8\u7684\u6676\u683c\u53c2\u6570\u5728\u653e\u7535\u8fc7\u7a0b\u4e2d\u6301\u7eed\u53d8\u5316\uff0c\u8868\u660e\u7cfb\u7edf\u59cb\u7ec8\u4fdd\u6301\u56fa\u6eb6\u4f53\u72b6\u6001\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u56fe 6B \u4e2d LiMn\u2082O\u2084 \u7684\u6570\u636e\u663e\u793a\uff0c(311)\u3001(400) \u548c (440) \u5cf0\u5728\u7ecf\u8fc7 3 V \u5e73\u53f0\u533a\u57df\u65f6\u4fdd\u6301\u5728\u76f8\u540c\u7684\u89d2\u5ea6\uff0c\u540c\u65f6\u5b83\u4eec\u7684\u5f3a\u5ea6\u9010\u6e10\u51cf\u5c11\uff0c\u8868\u73b0\u51fa\u4e24\u76f8\u53cd\u5e94\u7684\u7279\u5f81\u3002<\/p>\n

\"\"<\/p>\n

Fig. 6. In-situ XRD for L07M65-DH and LiMn2O4 at the first cycle.<\/p>\n

\u7eb3\u7c73\u7ea7\u7ed3\u6784\u5bf9\u7535\u5316\u5b66\u6027\u80fd\u7684\u5f71\u54cd<\/strong><\/p>\n

\u9530\u5143\u7d20\u7531\u4e8e\u5176\u4f4e\u4ef7\u7684\u7279\u6027\uff0c\u4f7f\u5176\u6210\u4e3a\u5b9e\u73b0\u9502\u79bb\u5b50\u7535\u6c60\u5927\u89c4\u6a21\u751f\u4ea7\u7684\u91cd\u8981\u8fc7\u6e21\u91d1\u5c5e\u3002 DRX \u6b63\u6781\u53ef\u4ee5\u5c06\u9530\u4f5c\u4e3a\u6c27\u5316\u8fd8\u539f\u5bf9\uff0c\u4f46\u901a\u5e38\u53ea\u6709\u5728\u7eb3\u7c73\u5c3a\u5bf8\u4e0b\u624d\u5177\u6709\u826f\u597d\u7684\u5feb\u901f\u5145\/\u653e\u7535\u80fd\u529b\u3002\u672c\u7814\u7a76\u5c55\u793a\u4e86\u4e00\u79cd\u72ec\u7279\u7684\u7eb3\u7c73\u7ed3\u6784\u5927\u9897\u7c92\u5c3a\u5bf8\u7684\u9530\u57fa\u6b63\u6781\u6750\u6599\uff0c\u5177\u6709\u9ad8\u80fd\u91cf\u3001\u5bb9\u91cf\u548c\u826f\u597d\u7684\u500d\u7387\u80fd\u529b\u3002\u867d\u7136\u8fd9\u79cd \u03b4 \u76f8\u7684\u7535\u538b\u66f2\u7ebf\u7c7b\u4f3c\u4e8e\u6709\u5e8f\u7684 LiMn\u2082O\u2084 \u5c16\u6676\u77f3\uff0c\u4f46\u4e24\u8005\u4e4b\u95f4\u5b58\u5728\u663e\u8457\u5dee\u5f02\uff1a\u4e0e\u5e38\u89c4\u5c16\u6676\u77f3\u4e0d\u540c\uff0c\u03b4 \u76f8\u5728 3V \u9644\u8fd1\u6ca1\u6709\u663e\u793a\u51fa\u4e24\u76f8\u53cd\u5e94\uff0c\u5e76\u4e14\u5728\u6b64\u533a\u57df\u4ee5\u56fa\u6eb6\u4f53\u5f62\u5f0f\u5faa\u73af\u3002\u6b64\u5916\uff0c3V \u533a\u57df\u7684\u5bb9\u91cf\u6bd4 4V \u533a\u57df\u66f4\u5927\u3002 \u03b4 \u76f8\u5c06\u5e38\u89c4\u5c16\u6676\u77f3\u7684\u4e24\u76f8\u53cd\u5e94\u8f6c\u53d8\u4e3a\u56fa\u6eb6\u4f53\u53cd\u5e94\u5177\u6709\u91cd\u5927\u610f\u4e49\uff0c\u56e0\u4e3a\u5c16\u6676\u77f3\u5728 3V \u9644\u8fd1\u7684\u4e24\u76f8\u53cd\u5e94\u4f1a\u5bfc\u81f4\u9897\u7c92\u7834\u88c2\u548c\u5faa\u73af\u6027\u80fd\u964d\u4f4e\u3002\u5c3d\u7ba1\u6700\u8fd1\u7684\u7814\u7a76\u8868\u660e\uff0c\u901a\u8fc7\u9ad8\u80fd\u7403\u78e8\u5408\u6210\u521b\u9020\u9633\u79bb\u5b50\u65e0\u5e8f\u53ef\u4ee5\u53bb\u9664\u4e24\u76f8\u53cd\u5e94\uff0c\u4f46\u7403\u78e8\u8fc7\u7a0b\u5bf9\u4e8e\u5546\u4e1a\u5316\u6765\u8bf4\uff0c\u6240\u9700\u80fd\u91cf\u8fc7\u5927\u3002\u76f8\u6bd4\u672a\u8f6c\u53d8\u7684 DRX\uff0c\u03b4 \u76f8\u5177\u6709\u66f4\u597d\u7684\u5bb9\u91cf\u548c\u500d\u7387\u80fd\u529b\uff0c\u8fd9\u7c7b\u4f3c\u4e8e\u4e0e\u6b64\u524d\u62a5\u9053\u7684\u9ad8\u9530\u542b\u91cf DRX \u6750\u6599\u5728\u7535\u5316\u5b66\u5faa\u73af\u4e2d\u7f13\u6162\u8f6c\u53d8\u4e3a \u03b4 \u76f8\uff08Cai, Zijian, et al.,\u00a0Nature Energy<\/em>,\u00a09.1 (2024): 27-36.\uff09\u3002<\/p>\n

\u5728\u672c\u7814\u7a76\u4e2d\uff0c\u8868\u5f81\u4e86 \u03b4 \u76f8\u4e2d\u7684\u72ec\u7279\u7eb3\u7c73\u7ea7\u5fae\u7ed3\u6784\uff0c\u8fd9\u4e00\u7ed3\u6784\u8d1f\u8d23\u5176\u72ec\u7279\u7684\u7535\u5316\u5b66\u8868\u73b0\u3002\u6587\u7ae0\u8fd8\u63d0\u51fa\u4e86 \u03b4 \u76f8\u53ef\u4ee5\u901a\u8fc7\u5316\u5b66\u8131\u9502\u548c\u4f4e\u6e29\u70ed\u5904\u7406\u7684\u5408\u6210\u65b9\u6cd5\uff0c\u5728\u5927\u9897\u7c92\u5c3a\u5ea6\u4e0b(\u7ea6\u4e3a ~10 \u03bcm)\u5f62\u6210\uff0c\u5c06 DRX \u8f6c\u53d8\u4e3a \u03b4 \u76f8\u6240\u9700\u7684\u65f6\u95f4\u4ece 3 \u5468\uff08\u7535\u5316\u5b66\u5faa\u73af\u65f6\uff09\u7f29\u77ed\u81f3 2 \u5929\uff0c<\/p>\n

XRD \u548c SEND \u5206\u6790\u8be6\u7ec6\u63cf\u8ff0\u4e86 L12M65 \u6837\u54c1\u5728\u5411 \u03b4 \u76f8\u8f6c\u53d8\u8fc7\u7a0b\u4e2d\u7684\u7ed3\u6784\u7279\u5f81\u3002\u5728\u8131\u9502\u548c\u52a0\u70ed\u7684\u8fc7\u7a0b\u4e2d\uff0cL07M65-DH \u4ea7\u751f\u5177\u6709\u5c16\u6676\u77f3\u578b\u9633\u79bb\u5b50\u6392\u5e8f\u7279\u5f81\u5cf0\uff0c\u5176\u4e2d (111) \u5cf0\u5728 2.13\u00b0 \u548c (311) \u5cf0\u5728 4.21\u00b0\uff08\u89c1\u56fe 1D\uff09\u3002\u540c\u65f6\uff0cSEND \u5206\u6790\uff08\u56fe 3C\uff09\u663e\u793a\uff0c\u03b4 \u76f8\u7684\u6f14\u53d8\u5728\u5316\u5b66\u8131\u9502\u540e\u5df2\u7ecf\u4ece\u9897\u7c92\u7684\u8868\u9762\u5f00\u59cb\uff08\u56fe 3F\uff09\uff0c\u7ecf\u8fc7\u52a0\u70ed\u540e\uff0c\u6574\u4e2a\u9897\u7c92\u7ecf\u5386\u4e86\u5747\u5300\u8f6c\u53d8\uff08\u56fe 3I\uff09\u3002\u8fd9\u4e9b SEND \u7ed3\u679c\u4e0e XRD \u6570\u636e\u4e00\u81f4\u3002L07M65-D \u663e\u793a\u51fa\u4e00\u4e2a\u5f31\u7684 (111) XRD \u5cf0\uff08\u56fe 1C\uff09\uff0c\u8868\u660e\u8f6c\u53d8\u4e3a \u03b4 \u76f8\u4e0d\u5b8c\u5168\u3002\u7136\u800c\uff0c\u7ecf\u8fc7\u52a0\u70ed\u5904\u7406\u540e\uff0c\u03b4 \u76f8\u7684\u7279\u5f81 XRD \u5cf0\u663e\u8457\u589e\u5f3a\uff08\u56fe 1D\uff09\u5e76\u4fdd\u6301\u5176\u5c55\u5bbd\u3002\u5373\u4f7f\u5728\u5b8c\u5168\u8f6c\u53d8\u540e\uff0c\u5177\u6709\u5947\u6570\u6676\u9762\u6307\u6570\u7684 XRD \u5cf0\u7684\u5bbd\u5ea6\u4ecd\u7136\u5b58\u5728\uff0c\u8fd9\u4e0e STEM-HAADF \u6570\u636e\u6240\u5f97\u5230\u7684\u7ed3\u679c\u4e00\u81f4\u3002\u7ed3\u5408\u591a\u79cd\u8868\u5f81\uff0c\u6587\u7ae0\u5c55\u793a\u4e86 \u03b4 \u76f8\u4e0e\u6709\u5e8f\u5c16\u6676\u77f3\u4e0d\u540c\uff0c\u5176\u7279\u5f81\u662f\u5177\u6709\u77ed\u76f8\u5e72\u957f\u5ea6\u7684\u9633\u79bb\u5b50\u6392\u5e8f\uff0c\u8fd9\u5bf9\u4e8e 3V \u533a\u57df\u4e2d\u7684\u56fa\u6eb6\u4f53\u884c\u4e3a\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

STEM-HAADF \u56fe\u50cf\uff08\u56fe 4D\uff09\u663e\u793a\uff0c\u03b4 \u76f8\u7684\u539f\u5b50\u7ed3\u6784\u5448\u73b0\u90e8\u5206\u65e0\u5e8f\u7684\u5c16\u6676\u77f3\u57df\uff0c\u5176\u76f8\u5e72\u957f\u5ea6\u8303\u56f4\u4e3a 3 \u81f3 7 nm\uff0c\u7531\u53cd\u76f8\u8fb9\u754c\u5206\u9694\u3002\u53cd\u76f8\u8fb9\u754c\uff08< 1 nm\uff09\u5728\u56fe 4D\u4e2d\u663e\u793a\u4e3a\u65e0\u5e8f\u72b6\u6001\u3002\u53cd\u76f8\u7574\u754c\u7684\u5b58\u5728\u53cd\u6620\u4e86\u521d\u59cb DRX \u76f8\u7684\u9ad8\u5bf9\u79f0\u6027\uff0c\u5e76\u5728\u8131\u9502\u548c\u52a0\u70ed\u8fc7\u7a0b\u4e2d\u5f62\u6210\u4e0d\u540c\u7684\u5c16\u6676\u77f3\u8f6c\u53d8\u6838\u3002DRX \u4e2d\u7684\u5c16\u6676\u77f3\u6392\u5e8f\u4ece\u968f\u673a\u9009\u62e9\u7684\u53d8\u4f53\u5f00\u59cb\uff0c\u7136\u540e\u751f\u957f\u76f4\u5230\u4e0e\u53e6\u4e00\u4e2a\u5c16\u6676\u77f3\u533a\u57df\u76f8\u9047\uff0c\u8fd9\u4e24\u4e2a\u53d8\u4f53\u7531\u53cd\u76f8\u7574\u754c\u5206\u9694\u3002\u8fd9\u4e00\u7406\u89e3\u7a81\u663e\u4e86 \u03b4 \u548c DRX \u4e4b\u95f4\u7684\u72ec\u7279\u5173\u7cfb\u3002\u53ea\u6709\u5f53\u5c16\u6676\u77f3\u4ece DRX \u5ca9\u76d0\u7ed3\u6784\u5f62\u6210\u65f6\uff0c\u5b83\u624d\u4f1a\u521b\u9020\u51fa\u5927\u91cf\u7684\u5c16\u6676\u77f3\u8f6c\u53d8\u6838\uff0c\u8fd9\u4e9b\u6838\u53ef\u4ee5\u901a\u8fc7\u5728\u53cd\u76f8\u7574\u754c\u5904\u76f8\u4e92\u63a5\u89e6\u5e76\u4fdd\u6301\u7eb3\u7c73\u5c3a\u5bf8\u3002\u8fd9\u4e9b\u5c16\u6676\u77f3\u533a\u57df\u7684\u5927\u5c0f\u663e\u793a\u51fa\u663e\u8457\u7684\u4e00\u81f4\u6027\u548c\u7a33\u5b9a\u6027\uff0c\u7ea6\u4e3a 3 \u81f3 7 nm\uff0c\u8868\u660e\u5176\u8fdb\u4e00\u6b65\u589e\u957f\u53d7\u5230\u9650\u5236\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u4f4e\u6e29\u4e0b\u9a71\u52a8\u529b\u4e0d\u8db3\u6216 Ti \u79bb\u5b50\u5728\u516b\u9762\u4f53\u4f4d\u7f6e\u4e4b\u95f4\u7684\u79fb\u52a8\u56f0\u96be\u6240\u81f4\u3002<\/p>\n

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