{"id":220967,"date":"2021-04-21T12:00:55","date_gmt":"2021-04-21T04:00:55","guid":{"rendered":"\/\/m.iemloyee.com\/?p=220967"},"modified":"2021-04-21T10:46:53","modified_gmt":"2021-04-21T02:46:53","slug":"%e5%8d%97%e5%bc%80%e5%a4%a7%e5%ad%a6%e6%9d%8e%e7%a6%8f%e5%86%9b%e5%9b%a2%e9%98%9fnat-commun-%ef%bc%9a%e8%b0%83%e6%8e%a7p2%e5%9e%8b%e5%b1%82%e7%8a%b6%e6%b0%a7%e5%8c%96%e7%89%a9%e6%ad%a3%e6%9e%81","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=220967","title":{"rendered":"\u5357\u5f00\u5927\u5b66\u674e\u798f\u519b\u56e2\u961fNat. Commun.\uff1a\u8c03\u63a7P2\u578b\u5c42\u72b6\u6c27\u5316\u7269\u6b63\u6781\u5c40\u90e8\u5316\u5b66\u5fae\u73af\u5883\u63d0\u5347\u94a0\u79bb\u5b50\u7535\u6c60\u80fd\u91cf\u5bc6\u5ea6\u548c\u5faa\u73af\u5bff\u547d"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n \u7531\u4e8eNa\u8d44\u6e90\u4e30\u5bcc\u4e14\u5206\u5e03\u5e7f\u6cdb\uff0c\u94a0\u79bb\u5b50\u7535\u6c60\u5728\u5927\u89c4\u6a21\u50a8\u80fd\u7cfb\u7edf\u548c\u667a\u80fd\u7535\u7f51\u5e94\u7528\u4e2d\u5177\u6709\u5e7f\u9614\u524d\u666f\u3002\u6b63\u6781\u6750\u6599\u5bf9\u7535\u6c60\u7684\u6027\u80fd\u548c\u6210\u672c\u8d77\u5230\u51b3\u5b9a\u6027\u4f5c\u7528\u3002\u76ee\u524d\u5df2\u8bc1\u5b9e\u591a\u79cd\u7ed3\u6784\u7684\u6750\u6599\u5177\u6709\u826f\u597d\u7684\u50a8\u94a0\u6d3b\u6027\uff0c\u5982\u8fc7\u6e21\u91d1\u5c5e\u6c27\u5316\u7269\u3001\u805a\u9634\u79bb\u5b50\u578b\u5316\u5408\u7269\u53ca\u666e\u9c81\u58eb\u84dd\u7c7b\u4f3c\u7269\u7b49\u3002\u5176\u4e2d\uff0c\u9530\u57fa\u5c42\u72b6\u6c27\u5316\u7269\u5177\u5907\u539f\u6599\u4ef7\u683c\u4f4e\u5ec9\u3001\u5236\u5907\u5de5\u827a\u7b80\u5355\u3001\u6bd4\u5bb9\u91cf\u9ad8\u7b49\u4f18\u70b9\uff0c\u662f\u94a0\u79bb\u5b50\u7535\u6c60\u6b63\u6781\u6750\u6599\u7684\u6700\u4f73\u5019\u9009\u8005\u4e4b\u4e00\u3002\u7136\u800c\uff0cNa+<\/sup>\u8f83\u5927\u7684\u79bb\u5b50\u534a\u5f84\uff08102pm\uff09\u5bf9\u6b63\u6781\u6750\u6599\u7684\u6bd4\u5bb9\u91cf\u548c\u7ed3\u6784\u7a33\u5b9a\u6027\u7684\u63d0\u5347\u9020\u6210\u4e86\u4e0d\u5229\u5f71\u54cd\u3002\u5177\u6709P2\u7ed3\u6784\u7684Nax<\/sub>MnO2<\/sub>\u7531MnO6<\/sub>\u516b\u9762\u4f53\u5c42\u548cNa\u5c42\u7ec4\u6210\uff0c\u901a\u5e38\u80fd\u591f\u53d1\u6325\u51fa\u7ea6\u4e3a160 mA g-1<\/sup>\u7684\u6bd4\u5bb9\u91cf\uff0c\u4e14\u5728\u5145\u653e\u7535\u8fc7\u7a0b\u4e2dMnO2<\/sub>\u5c42\u4f1a\u53d1\u751f\u6ed1\u79fb\u548c\u7578\u53d8\uff0c\u81f4\u4f7f\u7ed3\u6784\u7a33\u5b9a\u6027\u5dee\u548cNa+<\/sup>\u7684\u8131\u51fa\/\u5d4c\u5165\u91cf\u53d7\u9650\u3002\u76ee\u524d\u4e3b\u8981\u901a\u8fc7\u5728\u5c42\u4e2d\u5f15\u5165\u4e0e\u8fc7\u6e21\u91d1\u5c5e\u79bb\u5b50\u534a\u5f84\u76f8\u8fd1\u91d1\u5c5e\u79bb\u5b50\uff08\u5982Fe\u3001Co\u3001Ni\u3001Li\u3001Al\u7b49\uff09\u7a33\u5b9a\u6750\u6599\u7ed3\u6784\uff0c\u4f46\u4ecd\u96be\u5b9e\u73b0\u9ad8\u50a8\u94a0\u5bb9\u91cf\u548c\u7a33\u5b9a\u6027\u4e4b\u95f4\u7684\u5e73\u8861\u3002\u8bbe\u8ba1\u5177\u6709\u66f4\u591a\u6d3b\u6027\u50a8Na+<\/sup>\u4f4d\u70b9\u540c\u65f6\u4fdd\u8bc1\u7ed3\u6784\u7a33\u5b9a\u7684\u6b63\u6781\u6750\u6599\u5bf9\u4e8e\u63d0\u5347\u6bd4\u5bb9\u91cf\u548c\u5faa\u73af\u5bff\u547d\u8d77\u5230\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u5357\u5f00\u5927\u5b66\u674e\u798f\u519b\u7814\u7a76\u5458<\/strong>\u56e2\u961f\u5728P2-Nax<\/sub>MnO2<\/sub>\u7684\u78b1\u91d1\u5c5e\u5c42\u4e2d\u5f15\u5165\u5177\u6709\u5927\u79bb\u5b50\u534a\u5f84\u7684K+<\/sup>\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u51cf\u5c0f\u8fc7\u6e21\u91d1\u5c5e\u5c42\u7684\u76f8\u5bf9\u4f4d\u79fb\uff0c\u51cf\u5c11\u5145\/\u653e\u7535\u53cd\u5e94\u8fc7\u7a0b\u4e2d\u7684\u53ef\u9006\u76f8\u53d8\uff08\u4ec5P2\u2194P\u20192\u76f8\u53d8\uff09\uff0c\u800c\u4e14\u4f7f\u66f4\u591a\u7684Na+<\/sup>\u53ef\u4ee5\u53c2\u4e0e\u8131\/\u5d4c\u53cd\u5e94\u3002P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u57281.8-4.3 V\u7535\u538b\u8303\u56f4\u5185\u5c55\u73b0\u51fa240.5 mA g-1<\/sup>\u7684\u6bd4\u5bb9\u91cf\uff0c\u5faa\u73af100\u5708\u540e\u5bb9\u91cf\u4fdd\u6301\u7387\u9ad8\u8fbe98.2%\u3002\u8be5\u6210\u679c\u4ee5\u9898\u4e3a\u201cTuning local chemistry of P2 layered-oxide cathode for high energy and long cycles of sodium-ion battery\u201d<\/b><\/strong>\u53d1\u8868\u5728\u4e86Nat. Commun.<\/b><\/strong>\u4e0a\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe<\/strong>1 Na<\/strong>0.612<\/sub><\/strong>K<\/strong>0.056<\/sub><\/strong>MnO<\/strong>2<\/sub><\/strong>\u7684\u6676\u4f53\u7ed3\u6784<\/strong> a\uff09P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684XRD\u7cbe\u4fee\u7ed3\u679c\u3002<\/p>\n b\uff0cc\uff09P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684\u6676\u4f53\u7ed3\u6784\u793a\u610f\u56fe\u3002<\/p>\n d\uff0ce\uff09\u00a0P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684PDF\u53caEXAFS\u62df\u5408\u7ed3\u679c\u3002<\/p>\n \u56fe<\/strong>2 Na<\/strong>0.612<\/sub><\/strong>K<\/strong>0.056<\/sub><\/strong>MnO<\/strong>2<\/sub><\/strong>\u7684\u539f\u5b50\u7ed3\u6784\u548c\u5143\u7d20\u5206\u5e03<\/strong> a\uff0cb\uff09\u6cbf[010]\u65b9\u5411Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684STEM-HAADF\u56fe\u50cf\u3002<\/p>\n c\uff09Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684EELS\u8c31\u56fe\u3002<\/p>\n d\uff09\u4e0d\u540c\u6e85\u5c04\u65f6\u95f4\u7684SIMS\u5143\u7d20\u5206\u5e03\u56fe\u3002<\/p>\n e\uff09Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u548cK0.67<\/sub>MnO2<\/sub>\u768439<\/sup>K NMR\u8c31\u56fe\u3002<\/p>\n \u56fe<\/strong>3 \u5145\u653e\u7535\u8fc7\u7a0b\u4e2d\u7684\u7ed3\u6784\u6f14\u53d8<\/strong> a\uff09P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684\u539f\u4f4dXRD\u8c31\u56fe\u3002<\/p>\n b\uff0cc\uff09Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\uff08b\uff09\u548cNa0706<\/sub>MnO2<\/sub>\uff08c\uff09\u5728\u5145\u653e\u7535\u8fc7\u7a0b\u4e2d\u7684\u7ed3\u6784\u53d8\u5316\u8fc7\u7a0b\u793a\u610f\u56fe\u3002<\/p>\n \u56fe<\/strong>4 Na<\/strong>0.612<\/sub><\/strong>K<\/strong>0.056<\/sub><\/strong>MnO<\/strong>2<\/sub><\/strong>\u5728\u5145\u653e\u7535\u8fc7\u7a0b\u4e2d\u7684\u7535\u8377\u8865\u507f\u673a\u5236<\/strong> a\uff0cb\uff09Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u5728\u4e0d\u540c\u5145\u653e\u7535\u72b6\u6001\u4e0bMn 2p\u7684XPS\u8c31\u56fe\u3002<\/p>\n c\uff09Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u5728\u4e0d\u540c\u5145\u653e\u7535\u72b6\u6001\u4e0b\u7684EELS\u8c31\u56fe\u3002<\/p>\n \u56fe<\/strong>5<\/strong>\u00a0<\/strong>\u6750\u6599\u7684<\/strong>\u7535\u5b50\u7ed3\u6784<\/strong> a\uff09Mn\u3001K\u3001Na\u548cO\u7684MSD\u56fe\u3002<\/p>\n b-d\uff09P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684\u7535\u5b50\u7ed3\u6784\u56fe\u3002<\/p>\n e\uff0cf\uff09\u63baK\u524d\u540e\u6750\u6599\u7684pDOS\u548cCOHP\u793a\u610f\u56fe\u3002<\/p>\n \u56fe<\/strong>6<\/strong>\u00a0Na<\/strong>0.612<\/sub><\/strong>K<\/strong>0.056<\/sub><\/strong>MnO<\/strong>2<\/sub><\/strong>\u7684<\/strong>\u7535\u5316\u5b66\u6027\u80fd<\/strong> a\uff09\u63baK\u524d\u540e\u6750\u6599\u7684\u5145\u653e\u7535\u66f2\u7ebf\u56fe\u3002<\/p>\n b\uff09P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684\u6bd4\u5bb9\u91cf\u53ca\u80fd\u91cf\u5bc6\u5ea6\u4e0e\u5176\u4ed6\u6b63\u6781\u6750\u6599\u7684\u5bf9\u6bd4\u56fe\u3002<\/p>\n c\uff09\u6750\u6599\u7684\u5faa\u73af\u6027\u80fd\u56fe\u3002<\/p>\n d\uff09P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u7684Na+<\/sup>\u6269\u6563\u7cfb\u6570\u4e0eNa\u542b\u91cf\u7684\u5173\u7cfb\u3002<\/p>\n e\uff0cf\uff09\u786c\u78b3\/\/P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u5168\u7535\u6c60\u7535\u5316\u5b66\u6027\u80fd<\/p>\n \u3010\u5c0f\u7ed3\u3011<\/b><\/strong><\/p>\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u56e2\u961f\u6210\u529f\u8bbe\u8ba1\u4e86\u4e00\u79cdP2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u6b63\u6781\u6750\u6599\uff0c\u4f7fNa+<\/sup>\u7684\u7a7a\u7a74\u5f62\u6210\u80fd\u964d\u4f4e\uff0c\u7ea60.9\u4e2a\u94a0\u79bb\u5b50\u53ef\u5728\u5c42\u95f4\u8131\/\u5d4c\uff0c\u4ece\u800c\u63d0\u5347\u4e86\u6750\u6599\u7684\u53ef\u9006\u6bd4\u5bb9\u91cf\u3002K+<\/sup>\u7684\u8fc1\u79fb\u80fd\u5792\u8f83Na+<\/sup>\u9ad8\u5f88\u591a\uff0c\u4f7f\u5176\u5728\u7535\u5316\u5b66\u8fc7\u7a0b\u4e2d\u80fd\u591f\u56fa\u5b9a\u5728\u5c42\u95f4\uff0c\u51cf\u5c0fMnO2<\/sub>\u5c42\u7684\u6ed1\u79fb\uff0c\u4ece\u800c\u6709\u6548\u6291\u5236\u9ad8\u538b\u533aP2-OP4\u76f8\u8f6c\u53d8\u3002K+<\/sup>\u7684\u63ba\u6742\u4f7f\u6750\u6599\u50a8\u94a0\u5bb9\u91cf\u4ece167.2 mA g-1<\/sup>\u63d0\u5347\u5230240.5 mA g-1<\/sup>\uff0c\u80fd\u91cf\u5bc6\u5ea6\u9ad8\u8fbe654 Wh kg-1<\/sup>\uff0c\u4e14\u5728\u5faa\u73af100\u5708\u540e\u4ecd\u4fdd\u6301\u7a33\u5b9a\u3002\u6b64\u5916\uff0cP2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u6b63\u6781\u6750\u6599\u4e2dNa+<\/sup>\u5177\u6709\u8f83\u5feb\u7684\u6269\u6563\u901f\u7387\uff0c\u4fdd\u8bc1\u4e86\u826f\u597d\u7684\u500d\u7387\u6027\u80fd\u3002P2-Na0.612<\/sub>K0.056<\/sub>MnO2<\/sub>\u4e0e\u786c\u78b3\u7ec4\u88c5\u7684\u5168\u7535\u6c60\u80fd\u91cf\u5bc6\u5ea6\u53ef\u8fbe\u5230314.4 Wh kg-1<\/sup>\uff08\u57fa\u4e8e\u6b63\u3001\u8d1f\u6781\u6d3b\u6027\u7269\u8d28\u603b\u8d28\u91cf\uff09\uff0c\u8868\u73b0\u51fa\u6f5c\u5728\u7684\u5546\u4e1a\u5e94\u7528\u4ef7\u503c\u3002\u8be5\u5de5\u4f5c\u4e3a\u9ad8\u80fd\u91cf\u5bc6\u5ea6\u548c\u957f\u5faa\u73af\u5bff\u547d\u6b63\u6781\u6750\u6599\u548c\u5168\u7535\u6c60\u7684\u8bbe\u8ba1\u63d0\u4f9b\u91cd\u8981\u542f\u793a\u3002<\/p>\n<\/p>\n
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