{"id":223212,"date":"2021-06-17T06:55:36","date_gmt":"2021-06-16T22:55:36","guid":{"rendered":"\/\/m.iemloyee.com\/?p=223212"},"modified":"2021-06-16T15:55:46","modified_gmt":"2021-06-16T07:55:46","slug":"nature-mater-%ef%bc%9a%e9%80%9a%e8%bf%87%e5%8c%96%e5%ad%a6%e6%b0%94%e7%9b%b8%e6%b2%89%e7%a7%af%e4%ba%a7%e7%94%9ffe-n4%e8%87%b4%e5%af%86%e4%bd%8d%e7%82%b9%e7%9a%84fe-n-c%e6%b0%a7%e8%bf%98%e5%8e%9f","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=223212","title":{"rendered":"Nature Mater.\uff1a\u901a\u8fc7\u5316\u5b66\u6c14\u76f8\u6c89\u79ef\u4ea7\u751fFe-N4\u81f4\u5bc6\u4f4d\u70b9\u7684Fe-N-C\u6c27\u8fd8\u539f\u50ac\u5316\u5242"},"content":{"rendered":"

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

\u867d\u7136\u8d28\u5b50\u4ea4\u6362\u819c\u71c3\u6599\u7535\u6c60\uff08PEMFCs\uff09\u7684\u71c3\u6599\u7535\u6c60\u7535\u52a8\u8f66\u57282014\u5e74\u9996\u6b21\u5b9e\u73b0\u5546\u4e1a\u5316\uff0c\u4f46\u76ee\u524d\u71c3\u6599\u7535\u6c60\u7535\u52a8\u8f66\u4e2d\u5927\u91cf\u7684\u94c2\u963b\u788d\u4e86\u5927\u89c4\u6a21\u548c\u53ef\u6301\u7eed\u5e94\u7528\u3002\u94c2\u4e3b\u8981\u7528\u4e8e\u50ac\u5316\u9634\u6781\u7684\u6c27\u8fd8\u539f\u53cd\u5e94\uff08ORR\uff09\uff0c\u76ee\u524d\u56fd\u5185\u5916\u7684\u7814\u7a76\u5de5\u4f5c\u96c6\u4e2d\u5728\u5f00\u53d1\u65e0\u94c2\u65cf\u91d1\u5c5e\uff08PGMs\uff09\u7684ORR\u50ac\u5316\u5242\u3002\u6700\u6d3b\u8dc3\u7684\u65e0PGM ORR\u50ac\u5316\u5242\u662f\u70ed\u89e3\u7684\u91d1\u5c5e\u6c2e\u78b3\uff08M-N-C\uff09\u6750\u6599\u3002\u6700\u5148\u8fdb\u7684Fe-N-C\u50ac\u5316\u5242\u662f\u901a\u8fc7\u786c\u6a21\u677f\u6cd5\u548c\u8f6f\u6a21\u677f\u6cd5\u5236\u5907\u7684\u3002\u8fd9\u4e9b\u5408\u6210\u65b9\u6cd5\u7684\u5171\u540c\u5173\u952e\u6b65\u9aa4\u662f\u4f7f\u7528\u7531\u94c1\u3001\u6c2e\u548c\u78b3\u7ec4\u6210\u7684\u50ac\u5316\u5242\u524d\u4f53\uff0c\u5e76\u70ed\u89e3\u8fd9\u4e9b\u524d\u4f53\u4ee5\u5f62\u6210\u50ac\u5316\u5242\u6750\u6599\u3002\u901a\u8fc7\u5927\u91cf\u7684\u8868\u5f81\u5de5\u4f5c\u8fbe\u6210\u7684\u5171\u8bc6\u662f\uff0c\u70ed\u89e3\u6b65\u9aa4\u5f62\u6210\u4e86\u5d4c\u5165\u77f3\u58a8\u57fa\u4f53\u7684Fe-N4<\/sub>\u4f4d\u70b9\uff0c\u800c\u6bcf\u514b\u50ac\u5316\u5242\u53ef\u83b7\u5f97\u7684Fe-N4<\/sub>\u4f4d\u70b9\u7684\u6570\u91cf\uff08\u4f4d\u70b9\u5bc6\u5ea6\uff0cSDmass<\/sub>\uff09\u4e0e\u8be5\u6750\u6599\u5728\u9178\u6027\u7535\u89e3\u8d28\u4e2d\u7684ORR\u6d3b\u6027\u76f8\u5173\u3002\u6700\u8fd1\uff0cStrasser\u548cKucernak\u56e2\u961f\u5f00\u5206\u522b\u5f00\u53d1\u4e86\u4e24\u79cd\u57fa\u4e8e\u6c14\u76f8\u548c\u7535\u5316\u5b66\u5438\u9644\u7684\u65b9\u6cd5\u6765\u91cf\u5316SDmass<\/sub>\u3002\u7ed3\u5408ORR\u8d28\u91cf\u6d3b\u52a8\u6d4b\u91cf\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u8fd8\u63d0\u4f9b\u4e86\u4f4d\u70b9\u7684\u5e73\u5747ORR\u5468\u8f6c\u9891\u7387\uff08TOF\uff09\u3002\u5c06\u8fd9\u4e9b\u65b9\u6cd5\u5e94\u7528\u4e8e4\u79cdFe-N-C\u50ac\u5316\u5242\uff0c\u7ed3\u679c\u8868\u660e\uff0c\u6700\u9ad8\u7684SDmass<\/sub>\uff08\u6bcf\u514b\u7ea66\u00d71019<\/sup>\u4e2a\u4f4d\u70b9\uff09\u548cTOF\uff08pH1\u65f60.8V\u65f6~0.7 e site\u22121<\/sup>\u00a0s\u22121<\/sup>\uff09\u6bd4Pt\/C\u7684\u50ac\u5316\u5242\u4f4e\u7ea6\u4e00\u4e2a\u6570\u91cf\u7ea7\u3002\u63d0\u9ad8\u65e0PGM\u50ac\u5316\u5242\u7684TOF\u662f\u4e00\u9879\u6311\u6218\u3002\u5728\u6ca1\u6709\u589e\u52a0TOF\u7684\u9014\u5f84\u7684\u60c5\u51b5\u4e0b\uff0c\u589e\u52a0ORR\u8d28\u91cf\u6d3b\u6027\u7684\u552f\u4e00\u53ef\u7528\u65b9\u6cd5\u662f\u589e\u52a0SDmass<\/sub>\u3002\u8fd9\u4e00\u76ee\u6807\u76ee\u524d\u9762\u4e34\u4e24\u4e2a\u6311\u6218\u30021\uff09\u5728\u70ed\u89e3\u8fc7\u7a0b\u4e2d\u5e73\u884c\u5f62\u6210ORR\u6d3b\u6027\u6216\u4f4e\u6d3b\u6027\u7684Fe\u7269\u79cd\u548cFe-N4<\/sub>\u4f4d\u70b9\uff1b\uff082\uff09Fe-N4<\/sub>\u4f4d\u70b9\u7684\u4f4e\u5229\u7528\u7387\uff0c\u76f8\u5f53\u4e00\u90e8\u5206\u88ab\u57cb\u5728N\u63ba\u6742\u7684\u78b3\u57fa\u8d28\u4e2d\uff0c\u4e0d\u80fd\u88ab\u7a7a\u6c14\u63a5\u89e6\u5230\u3002\u6211\u4eec\u5b9a\u4e49\u4e86\u4e24\u4e2a\u5229\u7528\u7387\u6b21\u7ea7\u56e0\u7d20\uff0cUFe<\/sub>\u548cUFeN4<\/sub>\uff0c\u524d\u8005\u662fFe-N4<\/sub>\u5206\u5b50\u7684\u6570\u91cf\u4e0e\u50ac\u5316\u5242\u4e2dFe\u539f\u5b50\u603b\u6570\u7684\u6bd4\u7387\uff0c\u540e\u8005\u662f\u7535\u5316\u5b66\u4e0a\u53ef\u5229\u7528\u7684Fe-N4<\/sub>\u5206\u5b50\u4e0e\u6240\u6709Fe-N4<\/sub>\u5206\u5b50\u7684\u6bd4\u7387\u3002SDmass<\/sub>\u4e0eFe\u542b\u91cf\u548c\u603b\u5229\u7528\u7387U\u7684\u4e58\u79ef\u6210\u6b63\u6bd4\uff0c\u5176\u4e2dU = UFe<\/sub>\u00a0\u00d7 UFeN4<\/sub>\u3002\u56e0\u6b64\uff0c\u5728\u8f83\u9ad8\u7684Fe\u542b\u91cf\u4e0b\uff0c\u5bfc\u81f4UFeN4<\/sub>\u548cUFe<\/sub>\u503c\u589e\u52a0\u7684\u5408\u6210\u65b9\u6cd5\u5bf9\u4e8e\u63d0\u9ad8ORR\u6d3b\u6027\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u5728\u7f8e\u56fd\u4e1c\u5317\u5927\u5b66<\/b><\/strong>Qingying Jia<\/b><\/strong>\u3001<\/b><\/strong>\u6cd5\u56fd\u8499\u5f7c\u5229\u57c3\u5927\u5b66Fr\u00e9d\u00e9ric Jaouen<\/b><\/strong>\u548c\u7f8e\u56fd\u963f\u8d21\u56fd\u5bb6\u5b9e\u9a8c\u5ba4Deborah J. Myers<\/b><\/strong>\u56e2\u961f\u7b49\u4eba\u5e26\u9886\u4e0b\uff0c\u91c7\u7528\u5316\u5b66\u6c14\u76f8\u6c89\u79ef\u6cd5\u5408\u6210Fe-N-C\uff0c\u5728750\u2103\u4e0b\u5c06\u6c2f\u5316\u94c1\u84b8\u6c14\u6d41\u8fc7Zn-N-C\u57fa\u5e95\uff0c\u5bfc\u81f4Zn-N4<\/sub>\u4f4d\u70b9\u9ad8\u6e29\u53cd\u91d1\u5c5e\u5316\u4e3aFe-N4<\/sub>\u4f4d\u70b9\u3002\u901a\u8fc7\u591a\u79cd\u6280\u672f\u7684\u8868\u5f81\u8868\u660e\uff0c\u901a\u8fc7\u8fd9\u79cd\u65b9\u6cd5\u5f62\u6210\u7684\u6240\u6709Fe-N4<\/sub>\u4f4d\u70b9\u90fd\u662f\u6c14\u76f8\u548c\u7535\u5316\u5b66\u4e0a\u53ef\u5229\u7528\u7684\u3002\u56e0\u6b64\uff0cFe-N-C\u50ac\u5316\u5242\u7684\u6d3b\u6027\u4f4d\u70b9\u5bc6\u5ea6\u4e3a1.92\u00d71020<\/sup>\u4e2a\/\u514b\uff0c\u6d3b\u6027\u4f4d\u70b9\u5229\u7528\u7387\u4e3a100%\u3002\u8fd9\u79cd\u50ac\u5316\u5242\u57281.0 bar\u548c80\u00b0C\u7684H2<\/sub>-O2<\/sub>\u8d28\u5b50\u4ea4\u6362\u819c\u71c3\u6599\u7535\u6c60\u4e2d\uff0c\u57280.90\u00a0V\u4e0b\u63d0\u4f9b\u4e86\u524d\u6240\u672a\u6709\u7684\u6c27\u8fd8\u539f\u53cd\u5e94\u6d3b\u6027\uff0c\u537333 mA cm-2<\/sup>\u3002\u8be5\u6210\u679c\u4ee5\u9898\u4e3a\u201cChemical vapour deposition of Fe\u2013N\u2013C oxygen reduction catalysts with full utilization of dense Fe\u2013N<\/b><\/strong>4<\/b><\/sub><\/strong>\u00a0sites\u201d<\/b><\/strong>\u53d1\u8868\u5728\u4e86Nature Mater.<\/b><\/strong>\u4e0a\u3002<\/p>\n

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

\u56fe<\/strong>1 \u5408\u6210ZIF-8\u548cZIF-8\u884d\u751f\u7684Zn-N-C\u5e95\u7269\u7684\u8868\u5f81<\/strong>\"\"<\/p>\n

a\uff09ZIF-8\u7684\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c (TEM) \u56fe\u50cf\u3002<\/p>\n

b\uff09ZIF-8\u7684X\u5c04\u7ebf\u884d\u5c04\u56fe\u548c\u6a21\u62df\u56fe\u3002<\/p>\n

c\uff09Zn-N-C\u7684Zn K\u8fb9\u5085\u7acb\u53f6\u53d8\u6362EXAFS\u8c31\u548c\u62df\u5408\u3002R\u662f\u539f\u5b50\u95f4\u8ddd\u79bb\u3002\u03c7(R) \u662fR\u7a7a\u95f4\u4e2d\u7684\u5085\u7acb\u53f6\u53d8\u6362\u3002<\/p>\n

d\uff09Zn-N-C\u7684N\u00a01s XPS\u3002Ngr<\/sub>\u4ee3\u8868\u77f3\u58a8\u6c2e\u3002\u6a59\u8272\u5b9e\u7ebf\u4ee3\u8868N\u4e0e\u91d1\u5c5e\u952e\u5408 (M-Nx<\/sub>)\u3002 \u9ed1\u8272\u5b9e\u7ebf\u4ee3\u8868\u6570\u636e\u7684\u62df\u5408\u3002<\/p>\n

e\uff0cf\uff09Zn-N-C\u7684SEM\u56fe\u50cf\u3002<\/p>\n

g-k\uff09\u4e0d\u540c\u653e\u5927\u500d\u6570\u4e0bZn-N-C\u7684ADF\u56fe\u50cf\u4e2d\u7684AC-STEM\u3002\u6b8b\u7559\u7684Zn\u539f\u5b50\u7528\u7ea2\u8272\u5708\u8d77\u6765\u3002<\/p>\n

\u56fe<\/strong>2 FeNC-CVD-750\u7684ORR\u6d3b\u6027\u548c\u6027\u80fd<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09\u5ba4\u6e29900 rpm\u4e0b\u5728O2<\/sub>\u9971\u548c\u76840.5 M H2<\/sub>SO4<\/sub>\u4e2d\u7684\u7a33\u6001RDE\u6781\u5316\u66f2\u7ebf\u3002\u4ece0.05\u52300.95 V\u00a0vs.RHE\u3002\u50ac\u5316\u5242\u8d1f\u8f7d\uff1a800 \u03bcg cm-2<\/sup>\u3002<\/p>\n

b\uff09a\u4e2dFeNC-CVD-750\u7684ORR\u6781\u5316\u66f2\u7ebf\u7684Tafel\u56fe\u3002<\/p>\n

c\uff09\u7ecf\u8fc7\u548c\u4e0d\u7ecf\u8fc7iR\u6821\u6b63\u7684H2<\/sub>-O2<\/sub>\u00a0PEMFC\u6781\u5316\u66f2\u7ebf\u3002\u9634\u6781\uff0c~6.0 mgcat<\/sub>\u00a0cm\u22122<\/sup>\uff1b\u9633\u6781\uff0c0.3 mgPt<\/sub>\u00a0cm-2<\/sup>\u00a0Pt\/C\uff1b\u5168\u6c1f\u78fa\u9178212\uff1b200 ml H2<\/sub>\u00a0min-1<\/sup>\u548c1000 ml O2<\/sub>\u00a0min-1<\/sup>\u8fdb\u6c14\u3002\u7070\u8272\u865a\u7ebf\u4ee3\u8868\u9ad8\u9891\u7535\u963b\uff08HFR\uff09\u3002<\/p>\n

d\uff09c\u4e2dORR\u6781\u5316\u66f2\u7ebf\u7684Tafel\u56fe\u3002<\/p>\n

e\uff09FeNC-CVD-750\u57280.9 V\uff08iR\u6821\u6b63\uff09\u548c0.8 V\uff08iR\u6821\u6b63\uff09\u4e0b\u7684 H2<\/sub>-O2<\/sub>\u00a0PEMFC\u6d3b\u6027\u4e0e\u6587\u732e\u503c\u7684\u6bd4\u8f83\u3002<\/p>\n

f\uff09\u5728H2<\/sub>-O2<\/sub>\u6781\u5316\u66f2\u7ebf\u540e\u83b7\u5f97\u7684MEA\u7684H2<\/sub>-\u7a7a\u6c14PEMFC\u6781\u5316\u66f2\u7ebf\u548c\u6ca1\u6709iR\u6821\u6b63\u7684\u529f\u7387\u5bc6\u5ea6\u3002<\/p>\n

\u56fe<\/strong>3 FeNC-CVD-750\u7684<\/strong>\u7ed3\u6784<\/strong>\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09SEM\u56fe\u50cf\u3002<\/p>\n

b,c\uff09ADF-STEM (b) \u548c\u4e8c\u6b21\u7535\u5b50 STEM (c) \u56fe\u50cf\u3002<\/p>\n

d\uff09\u539f\u5b50\u5206\u8fa8\u7387ADF-STEM \u56fe\u50cf\u3002<\/p>\n

e\uff09\u9ad8\u5206\u8fa8\u7387N\u00a01s XPS\u5149\u8c31\u3002\u6a59\u8272\u5b9e\u7ebf\u4ee3\u8868N\u4e0e\u91d1\u5c5e\u952e\u5408\uff08M-Nx<\/sub>\uff09\u3002\u9ed1\u8272\u5b9e\u7ebf\u4ee3\u8868\u5bf9\u6570\u636e\u7684\u62df\u5408\u3002<\/p>\n

f\uff09\u9ad8\u5206\u8fa8\u7387XPS Fe\u00a02p\u5149\u8c31\uff0c\u5206\u4e3aFe(III) (90%)\u548cFe(II) (10%)\u7269\u79cd\u3002<\/p>\n

g\uff09\u4ece\u5355\u4e2a\u539f\u5b50\u83b7\u5f97\u7684N K\u8fb9\u548cFe L\u8fb9\u7684\u7535\u5b50\u80fd\u91cf\u635f\u5931\u5149\u8c31\uff08\u63d2\u56fe\u4e2d\u7684\u4eae\u70b9\u663e\u793a\u4e86\u539f\u5b50\u5206\u8fa8\u7387\u7684AC-STEM\u56fe\u50cf\uff09\u3002<\/p>\n

h\uff09\u57285 K\u4e0b\u6d4b\u5f97\u768457<\/sup>Fe\u7a46\u65af\u5821\u5c14\u8c31\uff0c\u5206\u4e3aD1 (89%) \u548c D3 (11%)\u3002<\/p>\n

i\uff09\u975e\u539f\u4f4dXANES\u5149\u8c31\u4e0eFe(II)Pc\u548cO2<\/sub>-Fe(III)Pc\u6807\u51c6\u54c1\u7684\u5149\u8c31\u8fdb\u884c\u6bd4\u8f83\u3002E\u662fX\u5c04\u7ebf\u675f\u7684\u80fd\u91cf\u3002\u03c7\u03bc(E)\u4ee3\u8868XANES\u5149\u8c31\u3002<\/p>\n

j\uff09\u975e\u539f\u4f4dFe K\u8fb9\u5085\u91cc\u53f6\u53d8\u6362EXAFS\u5149\u8c31\u53ca\u5176\u62df\u5408\uff0c\u63d2\u56fe\u4e2d\u4e3aO2<\/sub>-Fe(III)-N4<\/sub>\u6a21\u578b\uff0c\u5176\u4e2d\u6a59\u8272\u3001\u7ea2\u8272\u548c\u7d2b\u8272\u7403\u5206\u522b\u4ee3\u8868Fe\u3001O\u548cN\u539f\u5b50\u3002<\/p>\n

\u56fe<\/strong>4 FeNC-CVD-750\u7684SD<\/strong>mass<\/sub><\/strong>\u7684\u539f\u4f4d\u8bc4\u4f30<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09\u5728N2<\/sub>\u9971\u548c\u76840.5 M\u918b\u9178\u76d0\u7535\u89e3\u8d28\u7f13\u51b2\u6db2\uff08pH 5.2\uff09\u4e2d\uff0c\u50ac\u5316\u5242\u8d1f\u8f7d\u91cf\u4e3a 270 \u03bcg cm-2<\/sup>\uff0c\u626b\u63cf\u901f\u7387\u4e3a10 mV s-1<\/sup>\u4e0b\u7684\u4e9a\u785d\u9178\u76d0\u6eb6\u51fa\u4f0f\u5b89\u6cd5\u3002<\/p>\n

b\uff09\u5728N2<\/sub>\u9971\u548c\u76840.5 M H2<\/sub>SO4<\/sub>\u4e2d\uff0c\u50ac\u5316\u5242\u8d1f\u8f7d\u91cf\u4e3a 600 \u03bcg cm-2<\/sup>\uff0c\u626b\u63cf\u901f\u7387\u4e3a10 mV s-1<\/sup>\u4e0b\u7684NO\u6eb6\u51fa\u4f0f\u5b89\u6cd5\u3002\u7070\u8272\u9634\u5f71\u4ee3\u8868\u4e0e\u4e9a\u785d\u9178\u76d0\u8fd8\u539f\u5265\u79bb\u76f8\u5173\u7684\u8fc7\u5269\u7535\u6d41\u3002<\/p>\n

\u56fe<\/strong>5<\/strong>\u00a0<\/strong>\u9ad8\u6e29<\/strong>\u8f6c\u79fb\u91d1\u5c5e\u5316<\/strong>\"\"<\/p>\n

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\u6587\u732e\u94fe\u63a5<\/b><\/strong>\uff1aChemical vapour deposition of Fe\u2013N\u2013C oxygen reduction catalysts with full utilization of dense Fe\u2013N<\/u>4<\/sub><\/u>\u00a0sites<\/u><\/a>\uff08Nature Mater.\uff0c2021\uff0cDOI\uff1a10.1038\/s41563-021-01030-2\uff09<\/p>\n

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