{"id":167936,"date":"2019-02-26T06:46:52","date_gmt":"2019-02-25T22:46:52","guid":{"rendered":"\/\/m.iemloyee.com\/?p=167936"},"modified":"2019-02-25T17:04:19","modified_gmt":"2019-02-25T09:04:19","slug":"%e5%b7%b2%e6%a0%a1-j-am-chem-soc-%e5%b5%8c%e5%85%a5%e6%b0%ae%e6%8e%ba%e6%9d%82%e7%9f%b3%e5%a2%a8%e7%83%af%e4%b8%ad%e7%9a%84%e5%8d%95%e5%8e%9f%e5%ad%90%e9%92%b4%e5%82%ac%e5%8c%96%e5%89%82","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=167936","title":{"rendered":"J. Am. Chem. Soc. : \u5d4c\u5165\u6c2e\u63ba\u6742\u77f3\u58a8\u70ef\u4e2d\u7684\u5355\u539f\u5b50\u94b4\u50ac\u5316\u5242\u52a9\u529b\u9ad8\u786b\u542b\u91cf\u9502\u786b\u7535\u6c60"},"content":{"rendered":"

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

\u8fd1\u5e74\u6765\uff0c\u91c7\u7528\u50ac\u5316\u5242\u4fc3\u8fdb\u53ef\u6eb6\u6027\u591a\u786b\u5316\u9502(LiPSs)\u8f6c\u5316\u4e3a\u4e0d\u6eb6\u6027S(\u5145\u7535\u8fc7\u7a0b)\u6216Li2<\/sub>S(\u653e\u7535\u8fc7\u7a0b)\u4ee5\u964d\u4f4e\u7535\u89e3\u8d28\u4e2dLiPSs\u7684\u542b\u91cf\uff0c\u8fdb\u800c\u63d0\u9ad8\u786b\u5229\u7528\u7387\u548c\u5faa\u73af\u5bff\u547d\u3002\u5404\u79cd\u7eb3\u7c73\u50ac\u5316\u5242\uff0c\u5982\u94c2(Pt)\u548c\u94b4(Co)\u91d1\u5c5e\u7eb3\u7c73\u9897\u7c92\u3001\u6c27\u5316\u7269\u3001\u786b\u5316\u7269\u548c\u6c2e\u5316\u7269\uff0c\u5747\u53ef\u589e\u5f3aLi-S\u7535\u6c60\u7684\u53cd\u5e94\u52a8\u529b\u5b66\u3002\u5355\u539f\u5b50\u50ac\u5316\u5242(SAC)\u662f\u8d1f\u8f7d\u5728\u56fa\u4f53\u57fa\u5e95\u4e0a\u5355\u5206\u6563\u5355\u539f\u5b50\uff0c\u7406\u8bba\u4e0a\u5177\u6709100 %\u7684\u539f\u5b50\u5229\u7528\u6548\u7387\uff0c\u5176\u7ed3\u5408\u4e86\u975e\u5747\u76f8\u548c\u5747\u76f8\u50ac\u5316\u5242\u7684\u4f18\u70b9\u3002\u6b64\u5916\uff0c\u7531\u5355\u539f\u5b50\u6784\u6210\u7684\u7ed3\u6784\u660e\u786e\u7684\u6d3b\u6027\u4e2d\u5fc3\u53ef\u4f5c\u4e3a\u6a21\u578b\u7cfb\u7edf\uff0c\u4ee5\u83b7\u5f97\u5bf9\u50ac\u5316\u53cd\u5e94\u9014\u5f84\u7684\u6df1\u5165\u7406\u89e3\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u4e2d\u56fd\u79d1\u5b66\u6280\u672f\u5927\u5b66\u5b63\u6052\u661f\u6559\u6388\u3001\u6b66\u6653\u541b\u6559\u6388\u3001\u5408\u80a5\u5de5\u4e1a\u5927\u5b66\u5b54\u7965\u534e\u526f\u6559\u6388(\u5171\u540c\u901a\u8baf\u4f5c\u8005)\u7b49<\/strong>\u62a5\u9053\u4e86\u5d4c\u5165\u6c2e\u63ba\u6742\u77f3\u58a8\u70ef\u4e2d\u7684\u5355\u5206\u6563\u94b4\u539f\u5b50(Co-N\/G)\u53ef\u4ee5\u89e6\u53d1\u591a\u786b\u5316\u9502\u7684\u8868\u9762\u4ecb\u5bfc\u53cd\u5e94\uff0c\u5e76\u5728J. Am. Chem. Soc.<\/strong>\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cCobalt in Nitrogen-Doped Graphene as Single-Atom Catalyst for High-Sulphur Content Lithium-Sulphur Batteries<\/strong>\u201d\u7684\u7814\u7a76\u8bba\u6587\u3002\u7ed3\u5408\u539f\u4f4dX\u5c04\u7ebf\u5438\u6536\u5149\u8c31\u548c\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\uff0c\u4f5c\u8005\u53d1\u73b0Co-N-C\u914d\u4f4d\u4e2d\u5fc3\u4f5c\u4e3a\u53cc\u529f\u80fd\u7535\u50ac\u5316\u5242\u5206\u522b\u4fc3\u8fdb\u653e\u7535\u548c\u5145\u7535\u8fc7\u7a0b\u4e2dLi2<\/sub>S\u7684\u5f62\u6210\u548c\u5206\u89e3\u3002\u5177\u6709\u9ad8\u8fbe90% S\u8d28\u91cf\u6bd4\u7684S@Co-N\/G\u590d\u5408\u6750\u6599\u5177\u67091210 mAh\u00b7g-1<\/sup>\u7684\u8d28\u91cf\u5bb9\u91cf\u4ee5\u53ca5.1 mAh\u00b7cm-2<\/sup>\u7684\u9762\u79ef\u5bb9\u91cf\uff0c\u7535\u6781\u76d8\u4e0a\u7684S\u8d1f\u8f7d\u91cf\u4e3a6.0 mg\u00b7cm-2<\/sup>\u65f6\uff0c0.2 C\u4e0b100\u4e2a\u5faa\u73af\u540e\u6bcf\u4e2a\u5faa\u73af\u5bb9\u91cf\u8870\u51cf\u7387\u4e3a0.029 %\u3002<\/p>\n

\u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong>
\n \u56fe1 Co-N\/G\u590d\u5408\u6750\u6599\u7684\u7ed3\u6784<\/strong><\/p>\n

\"\"<\/p>\n

a) Co-N\/G\u7684TEM\u56fe\u50cf\uff1b
\n b) Co-N\/G\u7684HAADF-STEM\u56fe\u50cf\uff1b
\n c) Co-N\/G\u548cN\/G\u7684\u9ad8\u5206\u8fa8XPS N1s\u5149\u8c31\uff1b
\n d) Co-N\/G\u3001Co\/G\u3001Co\u7b94\u548cCo3O4\u7684XANES\u5149\u8c31\uff1b
\n e) Co-N\/G\u3001Co\/G\u3001Co\u7b94\u548cCo3O4\u7684R\u7a7a\u95f4\u4e2d\u7684FT-EXAFS\u5149\u8c31\uff1b
\n f) Co-N\/G\u7684\u5c0f\u6ce2\u53d8\u6362\u3002<\/p>\n

\u56fe2 S@Co-N\/G\u7684\u7ed3\u6784\u548c\u5f62\u8c8c<\/strong><\/p>\n

\"\"<\/p>\n

a) Co-N\/G\u3001\u7eafS\u548cS@Co-N\/G\u7684XRD\u56fe\u8c31\uff1b
\n b) \u7eafS\u548cS@Co-N\/G\u7684TG\u66f2\u7ebf\uff1b
\n c-g) S@Co-N\/G\u7684\u5143\u7d20\u5206\u5e03\u56fe\u50cf\u3002<\/p>\n

\u56fe3 Co-N\/G\u5bf9LiPSs\u8f6c\u5316\u7684\u50ac\u5316\u4f5c\u7528<\/strong><\/p>\n

\"\"<\/p>\n

a) \u5177\u6709Co-N\/G\u3001N\/G\u3001Co\/G\u548crGO\u7535\u6781\u7684\u5bf9\u79f0\u7535\u6c60CV\u66f2\u7ebf\uff1b
\n b) S@Co-N\/G\u3001S@N\/G\u3001S@Co\/G\u548cS@rGO\u7535\u6781\u7684\u653e\u7535\u66f2\u7ebf\uff1b
\n c) S@Co-N\/G\u3001S@N\/G\u3001S@Co\/G\u548cS@rGO\u7535\u6781\u7684\u5145\u7535\u66f2\u7ebf\uff1b
\n d) \u7535\u5316\u5b66\u5faa\u73af\u671f\u95f4S\u7684K\u8fb9XANS\u53d8\u5316\uff1b
\n e) \u7535\u5316\u5b66\u5faa\u73af\u671f\u95f4\u5cf0B\u7684\u5f3a\u5ea6(2469.0 eV\uff0c\u4ee3\u8868LiPSs\u7684\u6d53\u5ea6)\u548c\u5cf0D(2474.7 eV\uff0c\u4ee3\u8868Li2<\/sub>S\u6d53\u5ea6)\u7684\u6f14\u53d8\u3002<\/p>\n

\u56fe4 \u786b\u5316\u9502\u5728N\/G\u548cCo-N\/G\u4e0a\u7684\u80fd\u91cf\u66f2\u7ebf<\/strong><\/p>\n

\"\"<\/p>\n

a) \u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u4e2d\u4f7f\u7528\u7684N\/G\u548cCo-N\/G\u7684\u7ed3\u6784\uff0c\u5176\u4e2d\u68d5\u8272\u3001\u9ec4\u8272\u3001\u7eff\u8272\u3001\u6d45\u84dd\u8272\u548c\u6df1\u84dd\u8272\u7403\u5206\u522b\u4ee3\u8868C\u3001S\u3001Li\u3001N\u548cCo\u539f\u5b50(\u4e0b\u540c)\uff1b
\n b) \u8fd8\u539fN\/G\u548cCo-N\/G\u57fa\u5e95\u4e0a\u7684LiPSs\u7684\u80fd\u91cf\u66f2\u7ebf\uff0c\u5185\u63d2\u4e3a\u4e2d\u95f4\u6001\u5728N\/G\u548cCo-N\/G\u57fa\u5e95\u4e0a\u7684\u4f18\u5316\u5438\u9644\u6784\u8c61\uff1b
\n c,d) Li2<\/sub>S\u56e2\u7c07\u5728N\/G\u548cCo-N\/G\u4e0a\u5206\u89e3\u7684\u80fd\u91cf\u66f2\u7ebf\uff0c\u5185\u63d2\u4e3a\u521d\u59cb\u3001\u8fc7\u6e21\u548c\u6700\u7ec8\u7ed3\u6784\u3002<\/p>\n

\u56fe5 S@Co-N\/G\u6b63\u6781\u7684\u7535\u5316\u5b66\u6027\u80fd<\/strong><\/p>\n

\"\"<\/p>\n

a) S@Co-N\/G\u3001S@N\/G\u3001S@Co\/G\u548cS@rGO\u7535\u6781\u7684\u5145-\u653e\u7535\u66f2\u7ebf\uff1b
\n b) S@Co-N\/G\u3001S@N\/G\u3001S@Co\/G\u548cS@rGO\u7535\u6781\u7684\u500d\u7387\u5bb9\u91cf\uff1b
\n c) S@Co-N\/G\u3001S@N\/G\u3001S@Co\/G\u548cS@rGO\u7535\u6781\u7684\u5faa\u73af\u6027\u80fd\uff1b
\n d) 0.2 C\u65f6S\u9762\u79ef\u8d1f\u8f7d\u91cf\u4e3a2.0\u30013.4\u548c6.0 mg\u00b7cm-2<\/sup>\u65f6\uff0cS@Co-N\/G\u7535\u6781\u7684\u5faa\u73af\u6027\u80fd\u3002<\/p>\n

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

\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u4f5c\u8005\u8bc1\u660e\u5d4c\u5165\u5355\u72ecCo\u539f\u5b50\u7684N\u63ba\u6742\u77f3\u58a8\u70ef\u662f\u4e00\u79cd\u7528\u4e8e\u652f\u6491Li-S\u7535\u6c60\u4e2dS\u7684\u524d\u666f\u826f\u597d\u7684\u78b3\u57fa\u4e3b\u4f53\u6750\u6599\u3002\u7ed3\u5408XPS\u3001TEM\u548cXAS\u5206\u6790\u7684\u7ed3\u679c\uff0c\u4f5c\u8005\u5f97\u51fa\u7ed3\u8bba\uff0c\u5728Co-N\/G\u4e2d\uff0cCo\u539f\u5b50\u5d4c\u5165\u5728N\u63ba\u6742\u7684\u77f3\u58a8\u70ef\u6676\u683c\u4e2d\u5e76\u4e0eN\u539f\u5b50\u914d\u4f4d\u5f62\u6210Co-N-C\u914d\u4f4d\u4e2d\u5fc3\uff0c\u5e76\u4e14\u4e24\u4e2a\u76f8\u90bb\u7684Co\u539f\u5b50\u4e4b\u95f4\u7684\u5e73\u5747\u8ddd\u79bb\u4f30\u8ba1\u7ea6\u4e3a1 nm\u3002\u539f\u4f4dXAS\u548c\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u8868\u660e\uff0cCo-N-C\u914d\u4f4d\u4e2d\u5fc3\u5206\u522b\u4fc3\u8fdb\u653e\u7535\u548c\u5145\u7535\u8fc7\u7a0b\u4e2dLi2<\/sub>S\u7684\u5f62\u6210\u548c\u5206\u89e3\u3002\u56e0\u6b64\uff0c\u5373\u4f7f\u572890 wt%\u7684\u8d85\u9ad8S\u8d28\u91cf\u6bd4\u4e0b\uff0cCo-N\/G\u4e5f\u5177\u6709\u8f83\u9ad8\u7684S\u5229\u7528\u7387\u4ee5\u53ca1210 mAh\u00b7g-1<\/sup>\u7684\u8d28\u91cf\u5bb9\u91cf\u3002\u6b64\u5916\uff0c\u5728\u542bS@Co-N\/G\u7535\u6781\u7684S\u8d1f\u8f7d\u91cf\u9ad8\u8fbe6.0 mg\u00b7cm-2<\/sup>\u65f6\uff0c\u590d\u5408\u6750\u6599\u57280.2 C\u4e0b\u7ecf\u8fc7100\u6b21\u5faa\u73af\u540e\u7684\u9762\u79ef\u5bb9\u91cf\u4e3a5.1 mAh\u00b7cm-2<\/sup>\uff0c\u4e4b\u540e\u6bcf\u4e2a\u5468\u671f\u5bb9\u91cf\u8870\u51cf\u7387\u4e3a0.029 %\u3002\u8be5\u5de5\u4f5c\u4e3a\u5229\u7528\u5355\u539f\u5b50\u50ac\u5316\u5242\u8bbe\u8ba1\u5148\u8fdb\u7684\u5bfc\u7535\u4e3b\u4f53\u63d0\u4f9b\u4e86\u91cd\u8981\u53c2\u8003\uff0c\u53ef\u80fd\u5bf9\u4f7f\u7528\u591a\u7535\u5b50\u5316\u5b66\u7684\u9ad8\u6027\u80fdLi-S\u7535\u6c60\u4ee5\u53ca\u5176\u4ed6\u7535\u5316\u5b66\u50a8\u80fd\u5668\u4ef6\u7684\u5f00\u53d1\u4ea7\u751f\u91cd\u5927\u5f71\u54cd\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aCobalt in Nitrogen-Doped Graphene as Single-Atom Catalyst for High-Sulphur Content Lithium-Sulphur Batteries<\/a> <\/strong>(J. Am. Chem. Soc.<\/strong>, 2019, DOI: 10.1021\/jacs.8b12973)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8abc940504\u3010\u8096\u6770\u3011\u7f16\u8bd1\u6574\u7406\u3002<\/p>\n

\u6295\u7a3f\u4ee5\u53ca\u5185\u5bb9\u5408\u4f5c\u53ef\u52a0\u7f16\u8f91\u5fae\u4fe1\uff1acailiaokefu\uff0c\u6211\u4eec\u4f1a\u9080\u8bf7\u5404\u4f4d\u8001\u5e08\u52a0\u5165\u4e13\u5bb6\u7fa4\u3002<\/strong><\/p>\n

\u6b22\u8fce\u5927\u5bb6\u5230\u6750\u6599\u4eba\u5ba3\u4f20\u79d1\u6280\u6210\u679c\u5e76\u5bf9\u6587\u732e\u8fdb\u884c\u6df1\u5165\u89e3\u8bfb\uff0c\u6295\u7a3f\u90ae\u7bb1tougao@cailiaoren.com\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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