{"id":214205,"date":"2020-12-08T06:19:08","date_gmt":"2020-12-07T22:19:08","guid":{"rendered":"\/\/m.iemloyee.com\/?p=214205"},"modified":"2020-12-07T21:19:27","modified_gmt":"2020-12-07T13:19:27","slug":"%e5%9b%9b%e5%b7%9d%e5%a4%a7%e5%ad%a6%e5%88%98%e6%85%b0%e3%80%81%e9%99%88%e4%ba%91%e8%b4%b5%e5%9b%a2%e9%98%9fees%ef%bc%9a%e9%94%82%e6%b4%bb%e5%8c%96%e7%9a%84sns-%e7%9f%b3%e5%a2%a8%e7%83%af%e4%ba%a4","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=214205","title":{"rendered":"\u56db\u5ddd\u5927\u5b66\u5218\u6170\u3001\u9648\u4e91\u8d35\u56e2\u961fEES\uff1a\u9502\u6d3b\u5316\u7684SnS-\u77f3\u58a8\u70ef\u4ea4\u66ff\u7eb3\u7c73\u5c42\u53ef\u5b9e\u73b0\u78b3\u9178\u916f\u7535\u89e3\u8d28\u4e2d\u8584\u91d1\u5c5e\u94a0\u8d1f\u6781\u7684\u65e0\u679d\u6676\u5faa\u73af"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/b><\/strong><\/p>\n

\u5ba4\u6e29\u94a0\u91d1\u5c5e\u7535\u6c60\uff08SMBs\uff09\u662f\u4e00\u4e2a\u65b0\u5174\u7684\u7535\u5316\u5b66\u50a8\u80fd\u7814\u7a76\u65b9\u5411\uff0c\u5176\u80fd\u91cf\u6bd4\u4f20\u7edf\u7684\u94a0\u79bb\u5b50\u7535\u6c60\uff08SIBs\uff09\u9ad8\u51fa\u7ea650%\u3002SMB\u7684\u4e00\u4e2a\u4e3b\u8981\u95ee\u9898\u662fNa\u91d1\u5c5e\u8d1f\u6781\u7684\u56fa\u4f53\u7535\u89e3\u8d28\u95f4\u76f8\u819c\uff08SEI\uff09\u7684\u4e0d\u7a33\u5b9a\u3001\u6613\u751f\u6210\u679d\u6676\u800c\u5bfc\u81f4\u5e93\u4f26\u6548\u7387\u4f4e\u3001\u5185\u90e8\u77ed\u8def\u4e43\u81f3\u7535\u6c60\u5931\u6548\u3002\u5229\u7528\u4e8c\u7ef4\u7eb3\u7c73\u6750\u6599\u72ec\u7279\u7684\u529b\u5b66\u53ca\u7535\u5316\u5b66\u6027\u8d28\uff0c\u6709\u671b\u4fc3\u8fdb\u91d1\u5c5e\u5747\u5300\u6c89\u79ef\u3001\u4fdd\u62a4\u7535\u6781\u754c\u9762\u800c\u6291\u5236\u679d\u6676\u5f62\u6210\u3002\u4f46\u5982\u4f55\u5c06\u4e8c\u7ef4\u6750\u6599\u5176\u7cbe\u51c6\u5f15\u5165\u5230\u7535\u6781\u8868\u754c\u9762\u4e0a\uff0c\u5e76\u8c03\u53d8\u5faa\u73af\u8fc7\u7a0b\u4e2d\u7684\u79bb\u5b50\u4f20\u8f93\u3001\u7535\u8377\u8f6c\u79fb\u53ca\u5316\u5b66\/\u529b\u5b66\u7a33\u5b9a\u7b49\u7279\u6027\uff0c\u4ee5\u6700\u7ec8\u5b9e\u73b0\u94a0\u91d1\u5c5e\u7684\u65e0\u679d\u6676\u5faa\u73af\u662f\u5de8\u5927\u7684\u6311\u6218\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/b><\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u5728\u56db\u5ddd\u5927\u5b66\u5218\u6170<\/b><\/strong>\u3001<\/b><\/strong>\u9648\u4e91\u8d35\u6559\u6388\u56e2\u961f<\/b><\/strong>\u548c\u7f8e\u56fd\u5fb7\u514b\u8428\u65af\u5927\u5b66\u5965\u65af\u6c40\u5206\u6821David Mitlin<\/b><\/strong>\u7b49\u4eba\u5408\u4f5c\uff0c\u53d1\u73b0\u91c7\u7528\u9502\u79bb\u5b50\u6d3b\u5316\u540e\u7684\u786b\u5316\u9521(SnS)-\u77f3\u58a8\u70ef(G)\u4e8c\u7ef4\u7eb3\u7c73\u590d\u5408\u819c\uff08A-SnS-G\uff09\u4f5c\u4e3a\u4eba\u5de5SEI\u819c\uff0c\u53ef\u5b9e\u73b0100 \u03bcm Na\u91d1\u5c5e\u7b94\u7684\u53ef\u9006\u5faa\u73af\u3002\u4f5c\u8005\u901a\u8fc7\u8bf1\u5bfc\u4e8c\u7ef4\u7eb3\u7c73\u7247\u201c\u4ea4\u66ff\u5c42\u53e0\u201d\u7684\u7b56\u7565\u5728\u805a\u4e19\u70ef\uff08PP\uff09\u9694\u819c\u8868\u9762\u5f62\u6210\u4e00\u5c42SnS-G\u4e8c\u7ef4\u5f02\u8d28\u590d\u5408\u8584\u819c\uff0c\u5e76\u5bf9\u5176\u8fdb\u884c\u201c\u9502\u6d3b\u5316\uff08Li-activation\uff09\u201d\u5904\u7406\u5f97\u5230A-SnS-G\u8584\u819c\u3002\u7814\u7a76\u53d1\u73b0\uff0c\u8be5A-SnS-G\u8584\u819c\u5728\u94a0\u91d1\u5c5e\u5faa\u73af\u8fc7\u7a0b\u4e2d\u53ef\u539f\u4f4d\u8f6c\u79fb\u5230Na\u91d1\u5c5e\u8868\u9762\uff0c\u5f62\u6210\u4e00\u4e2a\u7a33\u56fa\u7684\u754c\u9762\u4fee\u9970\u4fdd\u62a4\u5c42\u3002\u7531A-SnS-G\u4fdd\u62a4\u7684\u5bf9\u79f0Na\u91d1\u5c5e\u7535\u6c60\u5728\u78b3\u9178\u916f\u7535\u89e3\u6db2\uff08EC:DEC = 1:1\uff0c5% FEC\uff09\u4e2d\u5b9e\u73b0\u4e86\u4f4e\u8fc7\u7535\u4f4d\u7684\u9ad8\u901f\u5faa\u73af\u3002\u57284 mA cm-2<\/sup>\u4e0b\u5faa\u73af500\u6b21\u540e\uff0c\u53ef\u83b7\u5f971000 mAh cm-2<\/sup>\u7684\u7d2f\u79ef\u5bb9\u91cf\uff0c\u7d2f\u79ef\u5faa\u73af\u5bb9\u91cf\u4e0e\u7b94\u7247\u5bb9\u91cf\uff08A\/F\uff09\u4e4b\u6bd4\u53ef\u8fbe90.9\u3002\u672a\u7ecf\u9502\u6d3b\u5316\u7684SnS-G\u819c\u5bf9\u94a0\u91d1\u5c5e\u7684\u4fdd\u62a4\u6548\u679c\u8fdc\u900a\u4e8eA-SnS-G\uff0c\u800c\u5b8c\u5168\u88f8\u9732\u7684\u7eafNa\u91d1\u5c5e\u66f4\u662f\u5b8c\u5168\u96be\u4ee5\u5faa\u73af\u3002\u5149\u8c31\u5206\u6790\u8868\u660e\uff0cA-SnS-G\u7684\u72ec\u7279\u4e8c\u7ef4\u5f02\u8d28\u7ed3\u6784\u53ca\u5176Li\u57faSEI\u7ec4\u5206\uff08ROCO2<\/sub>-Li\u3001Li2<\/sub>CO3<\/sub>\u548cLiF\uff09\uff0c\u53ef\u4fdd\u6301\u754c\u9762\u7a33\u5b9a\u3001\u5f3a\u5316\u79bb\u5b50\u8fc1\u79fb\uff0c\u663e\u8457\u6291\u5236\u4e86\u94a0\u91d1\u5c5e\u81a8\u80c0\u3001\u679d\u6676\u751f\u957f\u548c\u6b7b\u91d1\u5c5e\uff08\u201cdead Na\u201d\uff09\u5f62\u6210\u3002\u5177\u6709\u9ad8\u8d28\u91cf\u8d1f\u8f7d\uff086 mg cm-2<\/sup>\uff09\u7684NVP\u6b63\u6781\u548cA-SnS-G\u4fdd\u62a4\u7684\u94a0\u91d1\u5c5e\u8d1f\u6781\u7684\u5168\u7535\u6c60\uff0c\u53ef\u57280.4 C\u4e0b\u5faa\u73af400\u6b21\uff0c\u8868\u73b0\u51fa\u5728\u8f83\u5927\u7535\u89e3\u6df1\u5ea6\u548c\u7d2f\u79ef\u5faa\u73af\u5bb9\u91cf\u6761\u4ef6\u4e0b\u7684\u826f\u597d\u6027\u80fd\u3002\u8be5\u6210\u679c\u4ee5\u9898\u4e3a\u201cLithium-Activated SnS-Graphene Alternating Nanolayers Enable Dendrite-Free Cycling of Thin Sodium Metal Anodes in Carbonate Electrolyte\u201d<\/b><\/strong>\u53d1\u8868\u5728\u4e86Energy Environmental Science<\/b><\/strong>\u4e0a\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n

\u56fe1 A-SnS-G\u4e0eSnS-G\u7684\u5f62\u8c8c\u8868\u5f81<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a)-(c) \u5206\u522b\u4e3a\u521d\u59cbPP\u9694\u819c\u3001PP\u62c5\u8f7d\u7684SnS-G\u548cPP\u62c5\u8f7d\u7684A-SnS-G\u7684SEM\u56fe\u50cf\u548c\u7167\u7247\uff1b<\/p>\n

(d) A-SnS-G\u7684\u6a2a\u622a\u9762SEM\u56fe\u50cf\u548cEDXS\u5143\u7d20\u56fe\uff0c\u7a81\u51fa\u4e865\u03bcm\u539a\u5ea6\u7684\u819c\u5f62\u8c8c\uff0c\u4ee5\u53ca\u5176\u4e2d\u7684C\u3001S\u548cSn\u5143\u7d20\u5206\u5e03\u3002<\/p>\n

\u901a\u8fc7<\/b><\/strong>\u8c03\u63a7<\/b><\/strong>SnS\u53ca\u77f3\u58a8\u70ef<\/b><\/strong>\uff08G\uff09<\/b><\/strong>\u4e8c\u7ef4\u7eb3\u7c73\u7247\u6750\u6599\u7684\u8868\u9762\u8377\u7535\u6027\u8d28<\/b><\/strong>\uff0c<\/b><\/strong>\u53ef\u8bf1\u5bfc\u4e8c\u8005\u4ea4\u66ff\u5c42\u53e0\u5f62\u6210\u4e8c\u7ef4\u5f02\u8d28\u8584\u819cSnS-G\u6c89\u79ef\u5728PP\u9694\u819c<\/b><\/strong>\uff0c\u4f5c\u8005\u8fdb\u4e00\u6b65\u5bf9\u8be5\u8584\u819c\u8fdb\u884c\u4e86\u9502\u5316-\u53bb\u9502\u5316\u7684\u201c\u9502\u6d3b\u5316\u5904\u7406\u201d\uff0c\u5f97\u5230A-SnS-G\u3002\u8be5\u8584\u819c\u5927\u7ea65 <\/b><\/strong>\u03bc<\/b><\/strong>m\u539a\uff0c\u4e14\u6d3b\u5316\u524d\u540e\u7684SnS-G\u5747\u4ee5\u4fdd\u5f62\u8584\u819c\u7684\u72b6\u6001\u9644\u7740\u5728PP\u9694\u819c\u8868\u9762\uff0c\u5927\u5927\u4fbf\u5229\u4e86\u540e\u7eed\u7684\u8868\u5f81\u53ca\u7535\u6c60\u6d4b\u8bd5\u3002<\/b><\/strong><\/p>\n

\u56fe2 A-SnS-G\u4e0eSnS-G\u7684\u5fae\u7eb3\u7ed3\u6784<\/b><\/strong>\u3001<\/b><\/strong>\u7ec4\u5206\u8868\u5f81<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a)\u00a0\u5408\u6210\u7684SnS-G\u7684TEM\u56fe\u50cf\u548c\u9009\u533a\u7535\u5b50\u884d\u5c04(SAED)\u56fe\u6837\uff1b<\/p>\n

(b)\u00a0SnS-G\u7684HRTEM\u56fe\u50cf\u548c\u9009\u533a\u5085\u91cc\u53f6\u53d8\u5316\uff08FFT\uff09\u56fe\uff0c\u663e\u73b0\u51faSnS\u548cG\u7684\u6709\u5e8f\u6676\u4f53\u7ed3\u6784\uff1b<\/p>\n

(c)\u00a0A-SnS-G\u7684HRTEM\u56fe\u50cf\u548c\u9009\u533aFFT\u56fe\uff0c\u8bc1\u660e\u4e86\u7531\u4e8e\u6d3b\u5316\u800c\u5f15\u8d77\u7684SnS\u975e\u6676\u5316\uff1b<\/p>\n

(d)\u00a0A-SnS-G\u548cSnS-G\u7684XRD\u5206\u6790\uff0c\u8868\u660eSnS\u56e0\u6d3b\u5316\u800c\u975e\u6676\u5316\uff0c\u4f46\u77f3\u58a8\u70ef\uff08G\uff09\u7684\u7ed3\u6784\u672a\u53d7\u4efb\u4f55\u53d8\u5316\uff1b<\/p>\n

(e)\u00a0A-SnS-G\u548cSnS-G\u7684XPS C 1s\u5149\u8c31\uff0c\u8868\u660e\u9502\u6d3b\u5316\u5f15\u5165\u76f8\u5f53\u542b\u91cf\u7684Li2<\/sub>CO3<\/sub>\uff1b<\/p>\n

(f-g)\u00a0A-SnS-G\u7684XPS F 1s\u548cLi 1s\u5149\u8c31\uff0c\u8868\u660e\u9502\u6d3b\u5316\u5f15\u5165\u5927\u91cfLiF\u3001Li2<\/sub>CO3<\/sub>\u3001ROCO2<\/sub>-Li\u7b49\u9502\u57faSEI\u6210\u5206\u8fdb\u5165\u8868\u9762<\/p>\n

\u7535\u5b50\u663e\u5fae\u955c\u53ca\u5149\u8c31\u5206\u6790\u663e\u793a\uff0cSnS-G\u5f62\u6210\u4e86SnS\u53ca\u77f3\u58a8\u70ef\u6cbfc\u8f74\u5806\u579b\u3001\u4ea4\u66ff\u5c42\u53e0\u7684\u4e8c\u7ef4\u6742\u5316\u6784\u8c61\uff0c\u8be5\u79cd\u7ed3\u6784\u53ef\u5145\u5206\u8c03\u7528SnS\u76f8\uff08\u79bb\u5b50\u5bfc\u901a\uff09\u548cG\u76f8\uff08\u529b\u5b66\u7a33\u56fa\uff09\u7684\u4f18\u5f02\u6027\u8d28\uff0c\u4e14\u5b9e\u73b0\u4e86\u4e8c\u8005\u7eb3\u7c73\u5c3a\u5ea6\u4e0a\u7684\u5747\u4e00\u5206\u6563\u3002\u540c\u65f6\u53d1\u73b0\uff0c\u9502\u6d3b\u5316\u6b65\u9aa4\u4e0d\u4ec5\u5c06SnS\u5145\u5206\u5730\u65e0\u5b9a\u578b\u5316\uff0c\u4e14\u5728\u6750\u6599\u8868\u9762\u53ca\u5185\u90e8\u7a7a\u95f4\u4e2d\u5f62\u6210\u4e86\u5927\u91cfLi-\u57faSEI\u819c\u7ec4\u5206\uff08\u5982<\/b><\/strong>LiF\u3001Li2<\/sub>CO3<\/sub>\u3001ROCO2<\/sub>-Li\uff09\u3002Li-\u57faSEI\u5177\u6709\u6bd4Na-\u57faSEI\u66f4\u597d\u7684\u7a33\u5b9a\u6027\u548c\u66f4\u9ad8\u7684\u79bb\u5b50\u7535\u5bfc\u7387\uff0c\u56e0\u800c\u5728\u7a33\u5b9a\u7535\u6781\u754c\u9762\u3001\u4fc3\u8fdb\u79bb\u5b50\u4f20\u8f93\u65b9\u9762\u5177\u6709\u4f18\u52bf\u3002<\/b><\/strong><\/p>\n

\u56fe3 A-SnS-G<\/b><\/strong>@<\/b><\/strong>Na<\/b><\/strong>\uff0c<\/b><\/strong>SnS-G<\/b><\/strong>@<\/b><\/strong>Na\u7b49\u5bf9\u79f0\u7535\u6c60\u7684\u7535\u5316\u5b66<\/b><\/strong>\u884c\u4e3a<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a)\u548c(b)\u57fa\u4e8eA-SnS-G\u3001Sn-G\u4fdd\u62a4\u7684\u94a0\u91d1\u5c5e\u8d1f\u6781\u548c\u9502\u6d3b\u5316-\u94a0\uff08A-Na\uff09\u3001\u7eafNa\u91d1\u5c5e\u8d1f\u6781\u7684\u5bf9\u79f0\u7535\u6c60\u57281 mA cm-2<\/sup>\u548c4 mA cm-2<\/sup>\u7535\u6d41\u5bc6\u5ea6\u6761\u4ef6\u4e0b\u7684\u7535\u5316\u5b66\u6027\u80fd\uff1b<\/p>\n

(c) \u57284 mA cm-2<\/sup>\u4e0b\u5bf9\u79f0\u7535\u6c60\u6c89\u79ef-\u7535\u89e3\u5faa\u73af\u7684\u5e73\u5747\u8fc7\u7535\u4f4d\uff1b<\/p>\n

(d)\u00a0\u5faa\u73af\u540e\u7535\u6c60\u7684\u4ea4\u6d41\u963b\u6297\u8c31\u56fe\u53ca\u7b49\u6548\u7535\u8def\uff0c\u6b7b\u94a0\u5c42\u3001SEI\u5c42\u7684\u589e\u539a\u9020\u6210\u4e0d\u65ad\u4e0a\u5347\u7684\u8fc7\u7535\u4f4d\u548c\u8f83\u5927\u7684\u963b\u6297\uff0c\u7a33\u5b9a\u7684\u8fc7\u7535\u4f4d\u53ca\u8f83\u4f4e\u7684\u754c\u9762\u963b\u6297\u55bb\u793a\u65e0\u679d\u6676\u7684\u94a0\u91d1\u5c5e\u5faa\u73af\u8fc7\u7a0b\uff1b<\/p>\n

(e-f) \u5728Cu\u96c6\u6d41\u4f53\u4e0a\u76f4\u63a5\u6d4b\u8bd5A-SnS-G\u548cSnS-G\u819c\u57280.2 mV s-1<\/sup>\u4e0b\u7684\u5faa\u73af\u4f0f\u5b89\u66f2\u7ebf\u3002<\/p>\n

\u7535\u5316\u5b66\u7814\u7a76\u8868\u660e\uff0cA-SnS-G\u5177\u6709\u6bd4SnS-G\u66f4\u597d\u7684\u4fdd\u62a4\u94a0\u91d1\u5c5e\u754c\u9762\u3001\u4fc3\u8fdb\u7a33\u5b9a\u6c89\u79ef\u7535\u89e3\u7684\u6548\u679c\uff0c\u800c\u9502\u6d3b\u5316\u94a0\uff08A-Na\uff0c\u76f4\u63a5\u5728\u94a0\u91d1\u5c5e\u8868\u9762\u6784\u5efaLi\u57faSEI\uff09\u548c\u7eaf\u94a0\u91d1\u5c5e\u5747\u8868\u73b0\u51fa\u5341\u5206\u4e0d\u7a33\u5b9a\u7684\u7535\u538b\u66f2\u7ebf\u548c\u663e\u8457\u8f83\u9ad8\u7684\u8fc7\u7535\u52bf\u3002\u8fd9\u8868\u660eSnS-G\u4e8c\u7ef4\u4ea4\u66ff\u5c42\u53e0\u8584\u819c\u548cLi-\u57faSEI\u7ec4\u5206\u7684\u663e\u8457\u534f\u540c\u6548\u5e94\uff1a\u5728\u7f3a\u5c11\u4e8c\u8005\u5176\u4e2d\u4e4b\u4e00\u7684\u60c5\u51b5\u4e0b\uff0c\u5747\u4e0d\u80fd\u83b7\u5f97\u7a33\u5b9a\u7684Na\u91d1\u5c5e\u884c\u4e3a\u3002<\/b><\/strong><\/p>\n

\u6709\u610f\u601d\u7684\u662f\uff0c\u901a\u8fc7CV\u6d4b\u8bd5\u53d1\u73b0\uff0c<\/b><\/strong>\u7535\u9540\u4e4b\u524d<\/b><\/strong>\uff080.3~0.6 V vs. Na\/Na<\/b><\/strong>+<\/b><\/sup><\/strong>\uff09<\/b><\/strong>SnS-G<\/b><\/strong>\u663e\u73b0<\/b><\/strong>\u7684\u660e\u663e\u7684<\/b><\/strong>\u9634<\/b><\/strong>\u6781\u5cf0\u7535\u6d41<\/b><\/strong>\uff0c<\/b><\/strong>\u800c<\/b><\/strong>A-SnS-G\u5728\u8fd9\u4e00\u533a\u6bb5\u51e0\u4e4e\u65e0\u53cd\u5e94\u7535\u6d41\u4fe1\u53f7\u3002\u5206\u6790\u8ba4\u4e3a<\/b><\/strong>\u8fd9\u5e94\u4e0eSnS\u7684sodiation\u6709\u5173<\/b><\/strong>\uff0c<\/b><\/strong>\u8be5\u79cd\u94a0\u5316\u53cd\u5e94\u4f34\u968f\u7740\u8f83\u5927\u7684\u4f53\u79ef\u53d8\u5316<\/b><\/strong>\uff0c<\/b><\/strong>\u5f80\u5f80\u6613\u5f15\u8d77\u7ed3\u6784\u4e0d\u7a33<\/b><\/strong>\uff1b\u800cA-SnS-G\u4e0d\u53d1\u751f\u94a0\u5316\u53cd\u5e94\u6709\u5229\u4e8e\u7ef4\u6301\u5176\u7ed3\u6784\u7a33\u5b9a\u3002<\/b><\/strong><\/p>\n

\u56fe4 <\/b><\/strong>\u5faa\u73af\u540e<\/b><\/strong>Na\u91d1\u5c5e\u8d1f\u6781\u7684\u5f62\u8c8c<\/b><\/strong>\u3001\u8868\u9762\u5316\u5b66\u7ec4\u5206\u8c03\u67e5\u53ca\u5149\u5b66\u663e\u5fae\u955c\u8ffd\u8e2a<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a)\u00a0A-SnS-G@Na\u3001(b)SnS-G@Na\u548c\u00a0(c)\u00a0\u7eafNa\u7684\u5faa\u73af\u540e(100\u6b21\u5faa\u73af\uff0c1 mA cm-2<\/sup>)\u7684SEM\u56fe\u50cf\uff1b<\/p>\n

(d-e)\u00a0\u5faa\u73af\u540e\u7684A-SnS-G@Na\u548cSnS-G@Na\u7684XPS\u6e85\u5c04\u6df1\u5ea6\u5256\u6790\uff0c\u663e\u793aSn 3d\u5149\u8c31\u968f\u8680\u523b\u65f6\u95f4\u7684\u53d8\u5316\uff1b<\/p>\n

(f-g)\u00a0A-SnS-G\u4fdd\u62a4\u7684Na\u91d1\u5c5e\uff08\u5de6\uff09\u548c\u7eafNa\u91d1\u5c5e\uff08\u53f3\uff09\u7535\u9540-\u5265\u79bb\u7684\u5149\u5b66\u663e\u5fae\u955c\u8ffd\u8e2a\uff08\u6bd4\u4f8b\u5c3a\uff1a600 \u03bcm\uff09\u3002<\/p>\n

1 mA cm<\/b><\/strong>-2<\/b><\/sup><\/strong>\u5faa\u73af<\/b><\/strong>100\u6b21\u4ee5\u540e\uff0c<\/b><\/strong>\u552f\u6709A-SnS-G@Na\u8868\u73b0\u51fa\u65e0\u679d\u6676\u7684\u5e73\u5766\u6c89\u79ef\u4ea7\u7269\u5f62\u8c8c<\/b><\/strong>\uff0c<\/b><\/strong>SnS-G@Na\u6291\u5236\u4f46<\/b><\/strong>\u672a\u80fd<\/b><\/strong>\u675c\u7edd\u5d0e\u5c96\u4e0d\u5e73\u7684\u6c89\u79ef\u4ea7\u7269<\/b><\/strong>\uff0c<\/b><\/strong>\u7eafNa\u8868\u9762\u904d\u5e03\u84ec\u677e\u591a\u5b54\u7684\u82d4\u85d3\u72b6\u679d\u6676<\/b><\/strong>\u3002<\/b><\/strong>\u5728\u5faa\u73af\u8fc7\u7a0b\u4e2d<\/b><\/strong>\uff0c<\/b><\/strong>A-SnS<\/b><\/strong>-G\u8584\u819c\u9010\u6e10\u4ecePP\u9694\u819c\u4e0a\u8f6c\u79fb\u5230\u4e86Na\u91d1\u5c5e\u7684\u8868\u9762\uff0c\u540c\u65f6<\/b><\/strong>XPS\u5206\u6790\u8868\u660e\u5728A-SnS-G<\/b><\/strong>@<\/b><\/strong>Na\u7684\u7535\u6781\u8868\u9762<\/b><\/strong>\uff0c<\/b><\/strong>\u7531\u9502\u6d3b\u5316\u6b65\u9aa4\u5f15\u5165\u4e86SnLi\u5408\u91d1<\/b><\/strong>\u3001\u9502<\/b><\/strong>\u76d0<\/b><\/strong>\u7b49<\/b><\/strong>\u9ad8\u79bb\u5b50\u7535\u5bfc\u7684\u6d3b\u5316\u4ea7\u7269<\/b><\/strong>\u3002<\/b><\/strong>A-SnS-G<\/b><\/strong>\u4fdd\u62a4\u4e0bNa<\/b><\/strong>\u6c89\u79ef\u4ea7\u7269\u8f83\u4e3a\u5e73\u5766<\/b><\/strong>\u3001\u5faa\u73af\u5f15\u8d77\u7684\u81a8\u80c0\u5f97\u5230\u663e\u8457\u6291\u5236\uff0c\u800c\u88f8\u9732\u7684Na\u91d1\u5c5e\u8868\u73b0\u51fa\u5267\u70c8\u7684\u7535\u6781\u81a8\u80c0\u4e14\u51fa\u73b0\u5927\u91cf\u6b7b\u94a0\u3002<\/b><\/strong><\/p>\n

\u56fe5 \u957f\u671f<\/b><\/strong>\u5faa\u73af\u540e\u7684<\/b><\/strong>Na\u91d1\u5c5e\u8d1f\u6781\u539a\u5ea6\u53d8\u5316\u53caA-SnS-G@Na\u7684SEI\u7ec4\u5206\u7814\u7a76<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a-b) A-SnS-G@Na\u5728300\u6b21\u5faa\u73af\u540e\u7684SEM\u6a2a\u622a\u9762\u56fe\u50cf\uff0c100\u00a0\u03bcm\u7684\u91d1\u5c5e\u94a0\u8868\u73b0\u51fa\u8f83\u5c0f\u7684\u539a\u5ea6\u81a8\u80c0\uff1b(c)\u00a0\u5faa\u73af\u540eA-SnS-G@Na\u7684EDXS\u5149\u8c31\uff0c\u7535\u6781\u8868\u9762\u9644\u8fd1\uff08\u6591\u70b91\uff09\u53d1\u73b0\u4e86Sn\u53caS\u7684\u5143\u7d20\u4fe1\u53f7\uff0c\u800c\u5728\u5757\u72b6Na\u91d1\u5c5e\uff08\u6591\u70b92\uff09\u4e2d\u6ca1\u6709\u68c0\u6d4b\u5230Sn\u53caS\u5143\u7d20\uff0c\u8868\u660eNa\u91d1\u5c5e\u6c89\u79ef\u53cd\u5e94\u53d1\u751f\u4e8eA-SnS-G\u819c\u7684\u4e0b\u65b9\uff1b<\/p>\n

(d-e) \u65e0\u4fdd\u62a4Na\u7535\u6781\u5728131\u6b21\u5faa\u73af\u540e(\u5faa\u73af\u81f3\u5931\u6548)\u7684SEM\u6a2a\u622a\u9762\u56fe\u50cf\uff0c\u7a81\u51fa\u663e\u793a\u4e86\u5faa\u73af\u5f15\u8d77\u7684\u7535\u6781\u81a8\u80c0\u548c\u5f00\u88c2\uff1b<\/p>\n

(f)\u00a0\u5faa\u73af\u540e\u7684A-SnS-G@Na\u7684XPS\u00a0Li 1s\u548cNa 1s\u5149\u8c31\u6df1\u5ea6\u5256\u9762\u56fe\uff0c\u8868\u660e\u8868\u9762SEI\u4e2d\u5b58\u5728\u8f83\u591a\u7684Li\u57fa\u7ec4\u5206\u3002<\/p>\n

(g) \u4f7f\u7528\u900f\u660e\u80f6\u5e26\u6cd5\u53bb\u9664\u5927\u90e8\u5206A-SnS-G\u5c42\u540e\u7684\u7535\u6781\u8868\u9762XPS\u5206\u6790\uff0c\u8868\u660e\u5e95\u5c42\u8fd1Na\u91d1\u5c5e\u8868\u9762\u4e0a\u4e3b\u8981\u4e3aNa\u57fa\u7ec4\u5206\u3002<\/p>\n

EDS\u5728\u5faa\u73af\u540e\u7684Na\u91d1\u5c5e\u7535\u6781\u8868\u9762\u63a2\u6d4b\u5230\u8f83\u591a\u7684Sn\u3001S\u7684\u5316\u5408\u7269\u7b49\uff0c\u8bc1\u5b9e\u94a0\u91d1\u5c5e\u7684\u6c89\u79ef\u7535\u89e3\u53cd\u5e94\u4e3b\u8981\u53d1\u751f\u5728A-SnS-G\u819c\u5c42\u7684\u4e0b\u65b9\uff1b<\/b><\/strong>\u7ecf\u8fc7<\/b><\/strong>300\u6b21\u53cd\u590d\u5faa\u73af\u540e\u7684\u8868\u9762\u4e0a\u4f9d\u7136<\/b><\/strong>\u68c0\u6d4b\u5230\u4e86<\/b><\/strong>\u201c\u9502\u6d3b\u5316\u201d\u8fc7\u7a0b\u5f15\u5165\u7684Li-\u57faSEI\u7ec4\u5206\uff08<\/b><\/strong>ROCO<\/b><\/strong>2<\/b><\/sub><\/strong>-Li\u3001Li<\/b><\/strong>2<\/b><\/sub><\/strong>CO<\/b><\/strong>3<\/b><\/sub><\/strong>\u548cLiF<\/b><\/strong>\uff09\u5904\u4e8e\u5904\u4e8e\u7535\u6781\u8868\u9762\u8fd1\u7535\u89e3\u8d28\u4e00\u4fa7\u3001\u800c\u5728\u5faa\u73af\u8fc7\u7a0b\u4e2d\u65b0\u5f62\u6210\u7684Na-\u57faSEI\u7ec4\u5206\u5904\u4e8e\u7535\u6781\u8868\u9762\u8fd1Na\u91d1\u5c5e\u4e00\u4fa7\uff0c\u55bb\u793a\u7740Li-\u57faSEI\u5728\u9694\u79bb\u7535\u89e3\u6db2\u526f\u53cd\u5e94\u3001\u4fc3\u8fdb\u94a0\u91d1\u5c5e\u7a33\u5b9a\u5faa\u73af\u7684\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u8d77\u5230\u4e86\u5173\u952e\u6027\u7684\u91cd\u8981\u4f5c\u7528\u3002<\/b><\/strong><\/p>\n

\u56fe6 <\/b><\/strong>\u94a0\u91d1\u5c5e<\/b><\/strong>\u5168\u7535\u6c60(SMB)\u7684\u7535\u5316\u5b66\u6027\u80fd<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

(a)\u00a0\u5168\u91d1\u5c5e\u94a0\u7535\u6c60(SMB)\u7535\u6c60\u7684\u7a33\u538b\u5faa\u73af\u6027\u80fd\uff0c\u8584A-SnS-G@Na\u3001SnS-G@Na\u6216Na\u8d1f\u6781\u4e0eNVP\u6b63\u6781\u914d\u5bf9\uff1b<\/p>\n

(b,\u00a0c)\u00a0\u5206\u522b\u57fa\u4e8eA-SnS-G@Na\u548cSnS-G@Na\u8d1f\u6781\u7684\u5168\u7535\u6c60\u7684\u5145\u653e\u7535\u66f2\u7ebf\uff1b<\/p>\n

(d)\u00a0\u9ad8\u8d28\u91cf\u8d1f\u8f7d(6 mg cm-2<\/sup>)NVP\u4e0eA-SnS-G@Na\u914d\u5bf9\u7684\u5145\u653e\u7535(0.4C)\u5faa\u73af\uff1b<\/p>\n

(e)\u00a0\u5f53\u524d\u5168\u7535\u6c60\u5df2\u5b9e\u73b0\u7684\u7d2f\u8ba1\u5faa\u73af\u5bb9\u91cf\u4e0e\u5148\u8fdb\u7684\u524d\u671f\u6280\u672f\u76f8\u6bd4\uff0c\u6587\u7ae0\u62a5\u9053\u7684\u8bbe\u8ba1\u5236\u5907\u7b56\u7565\u5b9e\u73b0\u9ad8\u4e86\u7d2f\u8ba1\u5faa\u73af\u5bb9\u91cf(225 mAh\/cm2<\/sup>)\u00a0\u548c100 \u03bcm\u8584\u91d1\u5c5eNa(11 mAh\/cm2<\/sup>)\u3002<\/p>\n

\u5c06100 <\/b><\/strong>\u03bcm<\/b><\/strong>\u539a\u5ea6\u7684\u94a0\u7b94\uff0c\u78f7\u9178\u9492\u94a0\uff08NVP\uff09\u914d\u5bf9\u5168\u7535\u6c60\uff0c\u7814\u7a76\u53d1\u73b0A-SnS-G\u4fdd\u62a4\u7684\u94a0\u91d1\u5c5e\u7535\u6c60\u7535\u538b\u5e73\u53f0\u7a33\u5b9a\u3001\u53ef\u9006\u6027\u597d\uff1b\u800cSnS-G\u4fdd\u62a4\u7684\u94a0\u91d1\u5c5e\u7535\u6c60\u8868\u73b0\u51fa\u6301\u7eed\u7684\u5bb9\u91cf\u8870\u964d\u548c\u53cc\u653e\u7535\u5e73\u53f0\u7279\u6027\uff0c\u5176\u4e2d3.0V\u4f4d\u7f6e\u7684\u6b21\u7ea7\u7535\u538b\u5e73\u53f0\u4e0e\u201c\u6b7bNa\u201d\u5c42\/\u539aSEI\u9020\u6210\u7684\u6781\u5316\u76f8\u5173\u3002\u5728\u8f83\u5927NVP\u8d1f\u8f7d\u91cf\u7684\u6761\u4ef6\u4e0b\uff0cA-SnS-G@Na||NVP\u5168\u7535\u6c60\u4f9d\u7136\u53ef\u7a33\u5b9a\u5faa\u73af\u81f3400\u5708\u4ee5\u4e0a\uff0c<\/b><\/strong>\u610f\u5473\u7740\u5728<\/b><\/strong>\u9ad8\u7d2f\u8ba1\u5faa\u73af\u5bb9\u91cf<\/b><\/strong>\u548c<\/b><\/strong>\u8f83\u8584\u91d1\u5c5e\u8d1f\u6781\u7684\u8f83\u82db\u523b<\/b><\/strong>\u5de5\u51b5<\/b><\/strong>\u4e0b<\/b><\/strong>\uff0c\u5b9e\u73b0\u4e86<\/b><\/strong>\u94a0\u91d1\u5c5e\u8d1f\u6781\u6280\u672f\u7684\u8fdb\u4e00\u6b65<\/b><\/strong>\u53d1\u5c55\u3002<\/b><\/strong><\/p>\n

\u3010\u5c0f\u7ed3<\/b><\/strong>\u3011<\/p>\n

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\u6587\u732e\u94fe\u63a5<\/b><\/strong>\uff1a<\/b><\/strong>Lithium-Activated SnS-Graphene Alternating Nanolayers Enable Dendrite-Free Cycling of Thin Sodium Metal Anodes in Carbonate Electrolyte<\/u><\/a>\uff08Energy Environmental Science,\u00a02020, https:\/\/doi.org\/10.1039\/D0EE02423F<\/a>\uff09<\/p>\n

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