{"id":240369,"date":"2022-07-28T06:57:47","date_gmt":"2022-07-27T22:57:47","guid":{"rendered":"\/\/m.iemloyee.com\/?p=240369"},"modified":"2022-07-27T10:04:18","modified_gmt":"2022-07-27T02:04:18","slug":"ucla%e9%bb%84%e6%98%b1nat-nanotechnol-%ef%bc%9a%e8%b6%85%e4%bd%8e%e9%93%82%e8%bd%bd%e9%87%8f%e8%b4%a8%e5%ad%90%e4%ba%a4%e6%8d%a2%e8%86%9c%e7%87%83%e6%96%99%e7%94%b5%e6%b1%a0%e7%aa%81%e7%a0%b4","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=240369","title":{"rendered":"UCLA\u9ec4\u6631Nat.\u00a0Nanotechnol.\uff1a\u8d85\u4f4e\u94c2\u8f7d\u91cf\u8d28\u5b50\u4ea4\u6362\u819c\u71c3\u6599\u7535\u6c60\u7a81\u7834"},"content":{"rendered":"

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

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

PGM\u50ac\u5316\u5242\u7684\u672c\u5f81\u8d28\u91cf\u6d3b\u6027\uff08MA\uff09\u7531\u6bd4\u9762\u79ef\u6d3b\u6027\uff08SA\uff09\u548c\u7535\u5316\u5b66\u8868\u9762\u79ef\uff08ECSA\uff09\u51b3\u5b9a\u3002\u4e00\u65b9\u9762\uff0c\u63d0\u9ad8PGM\u50ac\u5316\u5242\u7684SA\uff0c\u5373\u901a\u8fc7\u63d0\u9ad8\u5355\u4e2a\u6d3b\u6027\u4f4d\u70b9\u7684\u8f6c\u6362\u9891\u7387\uff08TOF\uff09\uff0c\u53ef\u4ee5\u5728\u8d85\u4f4ePGM\u8d1f\u8f7d\u91cf\u7684\u60c5\u51b5\u4e0b\u786e\u4fdd\u6574\u4e2a\u71c3\u6599\u7535\u6c60\u88c5\u7f6e\u7684\u9ad8\u50ac\u5316\u6d3b\u6027\u3002<\/b><\/strong>\u7136\u800cTOF\u7684\u63d0\u5347\u65e0\u7591\u4f1a\u589e\u52a0\u7269\u8d28\u8f93\u8fd0\u7684\u538b\u529b\uff0c\u56e0\u4e3a\u8fd9\u610f\u5473\u9700\u8981\u5411\u5355\u4e2a\u6d3b\u6027\u4f4d\u70b9\u66f4\u5feb\u5730\u4f20\u8f93\u53cd\u5e94\u7269\u540c\u65f6\u66f4\u5feb\u5730\u79fb\u8d70\u4ea7\u7269\u3002\u5feb\u901f\u7684\u4f20\u8d28\u4e5f\u4f1a\u52a0\u5febPt\u539f\u5b50\u7684\u6eb6\u89e3\uff0c\u9020\u6210\u50ac\u5316\u5242\u5728PEMFC\u8fd0\u8f6c\u8fc7\u7a0b\u4e2d\u52a0\u901f\u5931\u6d3b\u3002\u540c\u65f6\uff0c\u819c\u7535\u6781\uff08MEA\uff09\u4e2d\u6c27\u6c14\u4f20\u8f93\u7684\u963b\u788d\u4e0e\u50ac\u5316\u4f4d\u70b9\u7684\u6570\u76ee\u6210\u53cd\u6bd4\uff0c\u5728\u8d85\u4f4ePGM\u8d1f\u8f7d\u91cf\u7684\u60c5\u51b5\u4e0b\u6d3b\u6027\u4f4d\u70b9\u7684\u6570\u76ee\u5df2\u5904\u4e8e\u6781\u9650\u72b6\u6001\uff0c\u5c11\u91cf\u50ac\u5316\u5242\u7684\u6027\u80fd\u4e0b\u964d\uff08\u7531\u50ac\u5316\u5242\u9897\u7c92\u805a\u96c6\u548c\u7531Ostwald\u719f\u5316\u5bfc\u81f4\u7684\u50ac\u5316\u5242\u9897\u7c92\u589e\u5927\u4ece\u800c\u4f7f\u71c3\u6599\u7535\u6c60\u5185\u4f4d\u70b9\u51cf\u5c11\uff09\u5c31\u4f1a\u9020\u6210\u6c27\u6c14\u4f20\u8f93\u963b\u788d\u7684\u663e\u8457\u63d0\u9ad8\uff0c\u6700\u7ec8\u9020\u6210\u663e\u8457\u7684\u6027\u80fd\u964d\u4f4e\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u51cf\u5c11\u50ac\u5316\u5242\u7684\u5c3a\u5bf8\uff0c\u6784\u9020\u8d85\u7ec6\u5c0f\u7684\u7eb3\u7c73\u50ac\u5316\u5242\uff0c\u4f7f\u5176\u5177\u6709\u9ad8\u7684ECSA\uff0c\u4e5f\u662f\u89e3\u51b3\u8d85\u4f4ePGM\u8d1f\u8f7d\u65f6\u50ac\u5316\u6d3b\u6027\u53d7\u9650\u95ee\u9898\u7684\u4e00\u4e2a\u601d\u8def\u3002<\/b><\/strong>\u7136\u800c\uff0c\u5177\u6709\u9ad8\u7684\u8868\u9762\u79ef-\u4f53\u79ef\u6bd4\u7684\u8d85\u7ec6\u5c0f\u7eb3\u7c73\u9897\u7c92\u5728\u5728\u70ed\u529b\u5b66\u4e0a\u662f\u4e9a\u7a33\u5b9a\u7684\uff0c\u4f7f\u5f97\u7eb3\u7c73\u9897\u7c92\u503e\u5411\u4e8e\u901a\u8fc7\u7269\u7406\u805a\u96c6\u6216\u8005Ostwald\u719f\u5316\u8fc7\u7a0b\u53d1\u751f\u663e\u8457\u7684\u957f\u5927\uff0c\u8fd9\u4f1a\u9020\u6210ECSA\u4ee5\u53caMA\u7684\u9010\u6b65\u635f\u5931\uff0c\u7a33\u5b9a\u6027\u96be\u4ee5\u6ee1\u8db3\u8981\u6c42\u3002\u56e0\u6b64\u8d85\u4f4ePGM\u8d1f\u8f7d\u7684PEMFCs\u7684\u957f\u7a0b\u7a33\u5b9a\u6027\u7684\u5b9e\u73b0\u9762\u4e34\u5341\u5206\u4e25\u5cfb\u7684\u6311\u6218\uff0c\u8fd9\u8981\u6c42\u5728\u7eb3\u7c73\u50ac\u5316\u5242\u7684\u8bbe\u8ba1\u4e2d\u517c\u987e\u50ac\u5316\u5242\u5c3a\u5bf8\u7684\u8d85\u7ec6\u5c0f\u4ee5\u53ca\u5353\u8d8a\u7684\u7a33\u5b9a\u6027\u3002<\/b><\/strong><\/p>\n

\u6709\u9274\u4e8e\u6b64\uff0c\u8fd1\u65e5\uff0cNature\u00a0Nanotechnology\u671f\u520a\u62a5\u9053\u4e86\u8bbe\u8ba1\u548c\u5408\u6210\u4e86\u4e00\u79cd\u5e94\u7528\u4e8e\u8d85\u4f4e\u8d35\u91d1\u5c5e\u8f7d\u91cf\u7684PEMFCs\u4e14\u5341\u5206\u7a33\u5b9a\u7684\u7531\u77f3\u58a8\u70ef\u7eb3\u7c73\u53e3\u888b\u4fdd\u62a4\u7684\u8d85\u7ec6\u5c0fPtCo\u7eb3\u7c73\u50ac\u5316\u5242\uff08\u56fe1a<\/b><\/strong>\uff09\u3002\u901a\u8fc7\u8fd9\u79cd\u8bbe\u8ba1\uff0c\u5c06\u8d85\u7ec6\u5c0f\u7684\u7eb3\u7c73\u50ac\u5316\u5242\u4fdd\u62a4\u5728\u77f3\u58a8\u70ef\u7eb3\u7c73\u53e3\u888b\u4e2d\u5728\u786e\u4fdd\u7535\u5316\u5b66\u53ef\u8fbe\u5230\u6027\u7684\u540c\u65f6\uff0c\u8fd8\u53ef\u4ee5\u9650\u5236\u50ac\u5316\u5242\u7684\u805a\u96c6\uff0c\u5e76\u4e14\u7f13\u89e3\u4e86\u50ac\u5316\u5242\u7684\u6c27\u5316\u6eb6\u89e3\u3001Ostwald\u719f\u5316\u8fc7\u7a0b\u3002\u5373\u4f7f\u5728\u8d85\u4f4ePGM\u8d1f\u8f7d\u7684\u5341\u5206\u82db\u523b\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd9\u79cd\u7279\u6b8a\u7684\u7ed3\u6784\u4f9d\u65e7\u53ef\u4ee5\u786e\u4fdd\u5353\u8d8a\u7684\u50ac\u5316\u7a33\u5b9a\u6027\u3002<\/p>\n

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\u4eae\u70b9<\/b><\/strong><\/p>\n

1<\/b><\/strong>\uff09<\/b><\/strong>\u00a0<\/b><\/strong>\u5c06PtCo@Gnp\u7eb3\u7c73\u50ac\u5316\u5242\u5e94\u7528\u4e8eMEA\u4e2d\uff0c\u5f53PGM\u8d1f\u8f7d\u91cf\u4e3a0.100 mg cm-2<\/sup><\/a>\u65f6\uff0cMA\u53ef\u4ee5\u8fbe\u52301.14 A\u00a0mgPGM<\/sub>-1<\/sup>\uff0c\u989d\u5b9a\u529f\u7387\u53ef\u4ee5\u8fbe\u523010.1 W\u00a0mgPGM<\/sub>-1<\/sup>\uff081.01 W\u00a0cm-2<\/sup>\uff09\uff0c\u57280.8 A\u00a0cm-2<\/sup>\u4e0b\uff0cMA\u4fdd\u6301\u7387\u4e3a66%\uff0c\u7535\u538b\u635f\u5931\u4ec5\u4e3a23.5 mV\uff0c\u8d85\u8fc7\u4e86DOE\u00a02020\u6280\u672f\u6307\u6807\u3002<\/p>\n

2) <\/b><\/strong>\u5f53PGM\u8d1f\u8f7d\u91cf\u8fdb\u4e00\u6b65\u964d\u4f4e\uff08\u6b63\u6781\u548c\u8d1f\u6781\u8d1f\u8f7d\u91cf\u4e4b\u548c\u4e3a0.07 mg cm-2<\/sup>\uff09\uff0c\u63a5\u8fd1DOE\u00a0\u94c2\u7cfb\u91d1\u5c5e\u8d1f\u8f7d\u91cf\u7684\u7ec8\u6781\u6307\u6807\uff080.0625 mgPGM<\/sub>\u00a0cm-2<\/sup>\uff09\u65f6\uff0cMEA\u4f9d\u65e7\u53ef\u4ee5\u4fdd\u6301\u9ad8MA\uff081.21 A\u00a0mgPGM<\/sub>-1<\/sup>\uff09\u548c\u9ad8\u989d\u5b9a\u529f\u7387\uff0813.2 W\u00a0mgPGM<\/sub>-1<\/sup>\uff080.92 W\u00a0cm-2<\/sup>\uff09\uff09\uff0c\u5728 0.8 A cm-2<\/sup>\u4e0b\uff0c\u8fdb\u884c\u52a0\u901f\u7a33\u5b9a\u6027\u6d4b\u8bd5\uff08ADT\uff09\u540e\uff0c\u5faa\u73af\u5468\u671f\u7ed3\u675f\uff08EOL\uff09\u65f6\u529f\u7387\u5bc6\u5ea6\u4f9d\u65e7\u67090.80 W\u00a0cm-2<\/sup>\uff0c \u7535\u538b\u635f\u5931\u4ec5\u4e3a18.8 mV\u3002<\/p>\n

3) <\/b><\/strong>\u57fa\u4e8ePtCo@Gnp\u7684\u8d85\u4f4ePGM\u8d1f\u8f7d\uff080.07 mg\u00a0cm-2<\/sup>\uff09MEA\u5bf9\u6bd4\u57fa\u4e8e\u5546\u4e1aPt\/C\u548c\u5546\u4e1aPtCo\/C\u7684MEA\uff0c\u529f\u7387\u5bc6\u5ea6\uff0813.2 W\u00a0mgPGM<\/sub>-1<\/sup>\uff09\u548c\u7a33\u5b9a\u6027\u5747\u663e\u8457\u63d0\u5347\uff0c\u5e76\u7531\u6b64\u53ef\u4ee5\u9884\u671f90 kW\u7684\u71c3\u6599\u7535\u6c60\u6c7d\u8f66\u4ec5\u4ec5\u9700\u89816.8 g\u00a0PGM\u5373\u53ef\u5b9e\u73b0\uff0c\u4e0e\u5185\u71c3\u673a\u52a8\u529b\u8f66\u8f86\u7684\u5c3e\u6c14\u50ac\u5316\u8f6c\u5316\u5668\u4e2d\u7684PGM\u8d1f\u8f7d\u76f8\u5f53\u3002<\/p>\n

\u56fe\u6587\u89e3\u6790<\/b><\/strong><\/p>\n

\u56fe<\/b><\/strong>1. <\/b><\/strong>\u4fdd\u62a4\u6027\u7eb3\u7c73\u53e3\u888b\u8bbe\u8ba1\u793a\u610f\u56fe\u548cPtCo@Gnp\u8868\u5f81\u3002<\/b><\/strong><\/p>\n

\"\"<\/p>\n

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\u00a0\"\"<\/b><\/strong><\/p>\n

\u56fe2<\/b><\/strong>. <\/b><\/strong>Pt<\/b><\/strong>\/C<\/b><\/strong>\uff0cc<\/b><\/strong>-PtCo\/C<\/b><\/strong>\u548cPtCo@Gnp\u50ac\u5316\u5242\u7684MEA\u6027\u80fd\u548c\u6587\u732e\u4e2d\u5177\u6709\u4ee3\u8868\u6027\u7684\u50ac\u5316\u5242\u5bf9\u6bd4\u3002<\/b><\/strong><\/p>\n

 <\/p>\n

\u7814\u7a76\u4eba\u5458\u5bf9\u7167DOE 2020\u6027\u80fd\u76ee\u6807\u8bc4\u4f30PtCo@Gnp\u5728\u8d85\u4f4e\u8d35\u91d1\u5c5e\u8f7d\u91cf\u7684\u71c3\u6599\u7535\u6c60\u4e2d\u7684\u6027\u80fd\uff0c\u7814\u7a76\u4eba\u5458\u5236\u5907\u4e86PGM\u8d1f\u8f7d\u5206\u522b\u4e3a0.090\u548c0.060 mgPGM<\/sub>\u00a0cm-2<\/sup>\u4e24\u79cd\u4e0d\u540c\u7684\u9634\u6781\u3002\u52a0\u4e0a0.010 mgPGM<\/sub>\u00a0cm-2<\/sup>\uff08\u5546\u4e1a Pt\/C\uff09\u7684\u9633\u6781\u8d1f\u8f7d\u91cf\uff0cMEA\u603bPGM\u8d1f\u8f7d\u91cf\u5206\u522b\u4e3a0.100\u548c0.070 mgPGM<\/sub>\u00a0cm-2<\/sup>\u30020.070 mgPGM<\/sub>\u00a0cm-2<\/sup>\u00a0\u7684PGM\u8d1f\u8f7d\u91cf\u4ec5\u4e3aToyota Mirai\u71c3\u6599\u7535\u6c60\u6c7d\u8f66\u6240\u7528\u7535\u5806\u4e2dPGM\u8d1f\u8f7d\u91cf\uff080.365 mgPGM<\/sub>\u00a0cm-2<\/sup>\uff09\u768419%\uff0c\u5e76\u63a5\u8fd1DOE\u94c2\u7cfb\u91d1\u5c5e\u8d1f\u8f7d\u91cf\u7684\u6700\u7ec8\u76ee\u6807\uff080.0625 mgPGM<\/sub>\u00a0cm-2<\/sup>\uff09\u3002\u5728\u9634\u6781PGM\u8d1f\u8f7d\u91cf\u5206\u522b\u4e3a0.090 mgPGM<\/sub>\u00a0cm-2<\/sup>\u548c0.060 mgPGM<\/sub>\u00a0cm-2<\/sup>\u7684\u6761\u4ef6\u4e0b\uff0cPtCo@Gnp\u7684\u521d\u59cbMA\u5206\u522b\u4e3a\u4e3a1.14 A mgPGM<\/sub>-1<\/sup>\u548c1.21 A mgPGM<\/sub>-1<\/sup>\uff08\u56fe2<\/b><\/strong>\uff09\uff0c\u663e\u8457\u9ad8\u4e8ePt\/C\uff080.42\u548c0.40 A mgPGM<\/sub>-1<\/sup>\uff09\u3001\u5546\u4e1aPtCo\/C\u50ac\u5316\u5242\uff08c-PtCo\uff09\uff080.57 A mgPGM<\/sub>-1<\/sup>\uff09\u548cDOE\u76ee\u6807\uff080.44 A mgPGM<\/sub>-1<\/sup>\uff09\u3002\u7814\u7a76\u4eba\u5458\u8fd8\u53c2\u7167\u6700\u65b0\u768430,000\u5468\u671f\u65b9\u6ce2\u534f\u8bae\uff0c\u5728\u6bcf\u4e2a\u5faa\u73af\u4e2d\u5c06\u9634\u6781\u5206\u522b\u57280.6 V\u548c0.95 V\u4e0b\u4fdd\u6301 3 s\uff0c\u8fdb\u884c\u4e86ADT\u6d4b\u8bd5\u3002\u5373\u4f7f\u5728\u8d85\u4f4e\u8d1f\u8f7d\uff080.070 mgPGM<\/sub>\u00a0cm-2<\/sup>\uff09\u7684\u60c5\u51b5\u4e0b\uff0cPtCo@Gnp\u5728\u4fb5\u7565\u6027\uff08aggresive\uff09\u65b9\u6ce2ADT\u540e\u4f9d\u65e7\u4fdd\u7559\u4e86\u5176\u521d\u59cbMA\u768473%\uff0c\u8fd9\u8fdc\u9ad8\u4e8e\u76f8\u540c\u8d1f\u8f7d\u91cf\u7684Pt\/C\uff0825%\uff09\u548cc-PtCo\/C\uff0830%\uff09\u3002\u56e0\u6b64\uff0c\u57fa\u4e8e\u82db\u523b\u7684\u8d85\u4f4ePGM\u8d1f\u8f7d\u6c34\u5e73\u7684PtCo@Gnp\u5728\u65b9\u6ce2ADT\u4e2d\u5c55\u73b0\u51fa\u4e86\u975e\u5e38\u9ad8\u7684\u8010\u4e45\u6027\uff08\u56fe<\/b><\/strong>2d<\/b><\/strong>\uff09\u3002\u6b64\u5916\uff0c\u8fd8\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cPtCo@Gnp\u7684EOL MA\uff080.89 A mgPGM<\/sub>-1<\/sup>\uff09\u5df2\u7ecf\u9ad8\u4e8eDOE\u76ee\u6807\uff080.264 A mgPGM<\/sub>-1<\/sup>\uff09\u76843\u500d\uff0c\u9ad8\u4e8ec-PtCo\/C\uff080.17 A mgPGM<\/sub>-1<\/sup>\uff09\u76845\u500d\uff0c\u5e76\u4e14\u662fPt\/C\uff080.10 A mgPGM<\/sub>-1<\/sup>\uff09\u7684\u8fd19\u500d\uff08\u88681<\/b><\/strong>\uff09\uff0c\u8fd9\u662f\u8fc4\u4eca\u4e3a\u6b62MEA\u6d4b\u8bd5\u4e2d\u62a5\u544a\u7684\u6700\u9ad8EOL MA\u4e4b\u4e00\uff08\u56fe2d<\/b><\/strong>\uff09\u3002<\/p>\n

\u88681.<\/b><\/strong>\u00a0<\/b><\/strong>PtCo@Gnp\u548c\u76f8\u5173\u6587\u732e\u4e2d\u6700\u65b0\u7684\u50ac\u5316\u5242\u7684\u5173\u952eMEA\u6027\u80fd\u5bf9\u6bd4\u3002<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u56fe3<\/b><\/strong>. <\/b><\/strong>\u6c22\u6c14\/\u6c27\u6c14\u73af\u5883\u4e0b\u6d4b\u8bd5\u7684\u8d85\u4f4ePGM\u8d1f\u8f7d\u91cf\uff08\u9634\u6781\u548c\u9633\u6781\u603b\u91cf\u4e3a0<\/b><\/strong>.07 mg<\/b><\/strong>PGM<\/b><\/sub><\/strong>\u00a0cm<\/b><\/strong>-2<\/b><\/sup><\/strong>\uff09\u4e0b\u7684MEA\u6781\u5316\u66f2\u7ebf\u3002<\/b><\/strong><\/p>\n

 <\/p>\n

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\"\"<\/p>\n

\u56fe4<\/b><\/strong>\u00a0<\/b><\/strong>EOL\u65f6\u50ac\u5316\u5242\u8868\u5f81\uff0c\u7c92\u5f84\u5206\u5e03\u5206\u6790\u548c\u76f8\u5e94\u7684MEA\u6d4b\u8bd5\u7ed3\u679c<\/b><\/strong><\/p>\n

\u00a0<\/b><\/strong><\/p>\n

\u4e3a\u4e86\u7406\u89e3\u4e0d\u540c\u50ac\u5316\u5242\u4e4b\u95f4\u663e\u8457\u7684\u7a33\u5b9a\u6027\u5dee\u5f02\uff0c\u7814\u7a76\u4eba\u5458\u4eec\u5bf9\u5728MEA\u4e2d\u7ecf\u8fc7ADT\u4e4b\u540e\u7684\u4e0d\u540c\u50ac\u5316\u5242\u8fdb\u884c\u4e86\u8868\u5f81\u548c\u5bf9\u6bd4\u3002\u9996\u5148\u5206\u6790\u4e86ADT\u4e4b\u540e\u7eb3\u7c73\u9897\u7c92\u5c3a\u5bf8\u5206\u5e03\u7684\u53d8\u5316\u3002\u4e3a\u4e86\u6b63\u786e\u53cd\u6620\u4e0d\u540c\u5c3a\u5bf8\u9897\u7c92\u7684\u8d28\u91cf\u5206\u6570\uff0c\u7ed8\u5236\u4e86\u8d28\u91cf\u52a0\u6743\u5c3a\u5bf8\u5206\u5e03\u3002\u603b\u4f53\u800c\u8a00\uff0cPt\/C\u7684\u8d28\u91cf\u52a0\u6743\u5c3a\u5bf8\u4ece\u5faa\u73af\u5468\u671f\u5f00\u59cb\uff08BOL\uff09\u76845.7\u00b12.0 nm\u6025\u5267\u589e\u52a0\u5230EOL\u768412.2\u00b15.6nm\uff08\u56fe4a<\/b><\/strong>\uff09\u3002\u5728c-PtCo\/C\u4e2d\u4e5f\u89c2\u5bdf\u5230\u7c7b\u4f3c\u7684\u5c3a\u5bf8\u589e\u52a0\uff08\u56fe4b<\/b><\/strong>\uff09\u3002\u7eb3\u7c73\u9897\u7c92\u5c3a\u5bf8\u7684\u8fd9\u79cd\u589e\u52a0\u4e3b\u8981\u5f52\u56e0\u4e8e\uff1a\uff081\uff09\u7eb3\u7c73\u9897\u7c92\u5206\u79bb\uff0c\u79fb\u52a8\uff0c\u7136\u540e\u805a\u96c6\uff0c\u4ee5\u53ca\uff082\uff09\u6c27\u5316\u6eb6\u89e3\u3001\u6269\u6563\u548c\u5965\u65af\u7279\u74e6\u5c14\u5fb7\u719f\u5316\u8fc7\u7a0b\u3002\u4e3a\u6b64\uff0c\u77f3\u58a8\u70ef\u5916\u58f3\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u7eb3\u7c73\u7c92\u5b50\u7684\u79fb\u52a8\u548c\u805a\u96c6\uff0c\u5e76\u5927\u5927\u5ef6\u7f13\u4e86\u6c27\u5316\u6eb6\u89e3\u548c\u6269\u6563\uff0c\u56e0\u4e3a\u5b83\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u5c06\u6eb6\u89e3\u7684Pt\u539f\u5b50\u4fdd\u7559\u5728\u4e86\u77f3\u58a8\u70ef\u53e3\u888b\u5185\uff0c\u8fd9\u4e9b\u539f\u5b50\u53ef\u4ee5\u91cd\u65b0\u6c89\u79ef\u5230PtCo\u7eb3\u7c73\u7c92\u5b50\u4e0a\uff0c\u4ece\u800c\u6709\u52a9\u4e8e\u4fdd\u6301\u8d85\u7ec6\u5c0f\u7684PtCo\u7eb3\u7c73\u7c92\u5b50\u7684\u5c3a\u5bf8\u3002\u5b9e\u9645\u4e0a\uff0cPtCo@Gnp\u4e2dPtCo\u7eb3\u7c73\u9897\u7c92\u7684\u8d28\u91cf\u52a0\u6743\u5e73\u5747\u5c3a\u5bf8\u4ec5\u4eceBOL\u76843.4\u00b11.1 nm\u9002\u5ea6\u5730\u589e\u52a0\u5230\u4e86EOL\u76845.1\u00b11.7 nm\uff08\u56fe4c<\/b><\/strong>\uff09\uff0c\u8fd9\u6e05\u695a\u5730\u8868\u660e\u77f3\u58a8\u70ef\u7eb3\u7c73\u888b\u7684\u5b58\u5728\u6709\u6548\u6291\u5236\u4e86\u5c3a\u5bf8\u589e\u957f\u5e76\u63d0\u9ad8\u4e86PtCo\u7eb3\u7c73\u50ac\u5316\u5242\u7684\u6574\u4f53\u8010\u4e45\u6027\u3002\u9ad8\u5206\u8fa8\u7387STEM\u56fe\u50cf\u548cEDS\u56fe\u8bc1\u5b9e\u4e86PtCo@Gnp\u4e2d\u7684PtCo\u7eb3\u7c73\u9897\u7c92\u5728EOL\u65f6\u4ecd\u4fdd\u7559\u4e86\u5176\u6838\u58f3\u72b6\u7ed3\u6784\u548c\u5bcc\u542bPt\u7684\u58f3\uff08\u56fe4d<\/b><\/strong>\uff09\u3002\u8fd8\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u4fdd\u62a4\u6027\u77f3\u58a8\u70ef\u7eb3\u7c73\u888b\u867d\u7136\u4f9d\u65e7\u4fdd\u7559\u5728PtCo\u7eb3\u7c73\u9897\u7c92\u4e0a\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u7684\u7a7a\u95f4\u6709\u6240\u51cf\u5c0f\uff08\u56fe4e<\/b><\/strong>\uff0cf<\/b><\/strong>\uff09\u3002\u8fd9\u5f88\u53ef\u80fd\u662f\u56e0\u4e3a\u77f3\u58a8\u70ef\u7eb3\u7c73\u888b\u5728ADT\u540e\u53d8\u5f97\u66f4\u52a0\u4eb2\u6c34\uff0c\u4ece\u800c\u7531\u4e8eTEM\u6837\u54c1\u5236\u5907\u8fc7\u7a0b\u4e2d\u7684\u6bdb\u7ec6\u4f5c\u7528\u529b\u800c\u584c\u9677\u5230\u4e86PtCo\u7eb3\u7c73\u9897\u7c92\u4e0a\u3002PtCo@Gnp\u4e2d\u8d28\u91cf\u52a0\u6743\u5c3a\u5bf8\u7684\u5c0f\u5e45\u589e\u52a0\uff08\u4ece3.4\u52305.1 nm\uff09\u4f7f\u5f97\u5176\u5728EOL\u65f6\u4ecd\u7136\u4fdd\u7559\u4e86\u76f8\u5bf9\u8f83\u9ad8\u7684ECSA\uff0832.4 m2<\/sup>\u00a0gPGM<\/sub>-1<\/sup>\uff09\uff0c\u5927\u5927\u9ad8\u4e8ePt\/C\uff0813.2 m2<\/sup>\u00a0gPGM<\/sub>-1<\/sup>\uff09\u548cc-PtCo\/C\uff0813.6 m2<\/sup>\u00a0gPGM<\/sub>-1<\/sup>\uff09\uff08\u56fe4g<\/b><\/strong>\uff09\u3002\u901a\u8fc7\u6c27\u4f20\u8f93\u963b\u529b\u7814\u7a76\u4e5f\u53ef\u4ee5\u8bc1\u660ePtCo@Gnp\u5728\u71c3\u6599\u7535\u6c60\u5de5\u4f5c\u671f\u95f4\u53ef\u4ee5\u4fdd\u6301\u9ad8ECSA\u3002\u56e0\u4e3aMEA\u4e2d\u4e0e\u538b\u529b\u65e0\u5173\u7684\u6c27\u4f20\u8f93\u963b\u529b\uff08RP-Ind<\/sub>\uff09\u4e0e\u7535\u6781\u6bcf\u5355\u4f4d\u9762\u79ef\u7684\u6d3b\u6027\u4f4d\u70b9\u6570\u91cf\u6210\u53cd\u6bd4\u3002\u4e0ePt\/C\uff08640%\uff09\u548cc-PtCo\/C\uff08265%\uff09MEA\u4e2dRP-Ind<\/sub>\u7684\u663e\u8457\u589e\u52a0\u76f8\u6bd4\uff0cPtCo@Gnp MEA\u5728ADT\u540e\u663e\u793a\u51fa\u5c0f\u5f97\u591a\u7684\u589e\u52a0\uff0c\u4ec5\u4e3a\u7ea6100%\uff08\u56fe4h<\/b><\/strong>\uff09\u3002Pt\/C\u7535\u6781\u7684RP-Ind<\/sub>\u6025\u5267\u589e\u52a0\u53ef\u5f52\u56e0\u4e8e\u9897\u7c92\u5c3a\u5bf8\uff0812.2nm\uff09\u7684\u663e\u7740\u589e\u52a0\u548c\u9897\u7c92\u5bc6\u5ea6\u7684\u663e\u7740\u964d\u4f4e\uff08\u4ece5.2\u00d71013<\/sup>\u52308.1\u00d71012<\/sup>\u00a0cm-2<\/sup>\uff09\uff0c\u8fd9\u5bfc\u81f4\u6c27\u6269\u6563\u5230\u8fbe\u6d3b\u6027\u4f4d\u70b9\u7684\u963b\u529b\u660e\u663e\u589e\u52a0\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cPtCo@Gnp\u5728EOL\u5904\u4fdd\u7559\u4e86\u76f8\u5bf9\u8f83\u5c0f\u7684\u5c3a\u5bf8\uff085.1 nm\uff09\u548c\u9ad8\u9897\u7c92\u5bc6\u5ea6\uff085.7\u00d71013<\/sup>\u00a0cm–<\/sup>2<\/sup>\uff09\uff0c\u4ee5\u786e\u4fdd\u8db3\u591f\u4f4e\u7684RP-Ind<\/sub>\uff0c\u8fd9\u5bf9\u4e8e\u957f\u671f\u7a33\u5b9a\u6027\u81f3\u5173\u91cd\u8981\uff08\u56fe4i<\/b><\/strong>\uff09\u3002<\/p>\n

\u7ed3\u8bba\u4e0e\u542f\u793a<\/b><\/strong><\/p>\n

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1)<\/b><\/strong>\u00a0\u8be5\u50ac\u5316\u5242\u5728\u8d85\u4f4ePGM\u8d1f\u8f7d\uff080.070 mgPGM<\/sub>\u00a0cm-2<\/sup>\uff09\u6761\u4ef6\u4e0b\u4fdd\u8bc1\u4e86PEMFCs\u4ecd\u5177\u6709\u9ad8\u5ea6\u7a33\u5065\u7684\u6027\u80fd\uff0cMA\u9ad8\u8fbe1.21 A gPGM<\/sub>-1<\/sup>\u3001\u989d\u5b9a\u529f\u7387\u9ad8\u8fbe13.2 W mgPGM<\/sub>-1<\/sup>\u540c\u65f6\u5177\u6709\u5341\u5206\u4f18\u5f02\u7684\u8010\u7528\u6027\uff08\u57280.8 A cm-2<\/sup>\u6761\u4ef6\u4e0b\uff0cADT\u540eMA \u4fdd\u6301\u7387\u4e3a73%\uff0c\u7535\u538b\u635f\u5931\u4ec5\u4e3a18.8 mV\uff09\uff0c\u6240\u6709\u8fd9\u4e9b\u90fd\u8d85\u8fc7\u4e86\u76f8\u5173\u7684DOE\u76ee\u6807\u3002<\/p>\n

2<\/b><\/strong>)<\/b><\/strong>\u00a0\u51ed\u501f\u5728\u8d85\u4f4ePGM\u8d1f\u8f7d\u4e0b\u7684\u9ad8\u989d\u5b9a\u529f\u7387\u548c\u9ad8\u8010\u7528\u6027\uff0cPtCo@Gnp\u6709\u671b\u5c0690 kW\u71c3\u6599\u7535\u6c60\u6c7d\u8f66\u6240\u9700\u7684PGM\u5927\u5e45\u964d\u4f4e\u81f36.8 g\u5de6\u53f3\uff0c\u4e0e\u5185\u71c3\u673a\u52a8\u529b\u8f66\u8f86\u7684\u5c3e\u6c14\u50ac\u5316\u8f6c\u5316\u5668\u4e2d\u7684PGM\u8d1f\u8f7d\u76f8\u5f53\u3002<\/p>\n

\u672c\u6587\u62a5\u9053\u7684\u50ac\u5316\u5242\u5728\u8d85\u4f4e\u8d1f\u8f7d\u7684\u60c5\u51b5\u4e0b\u540c\u65f6\u5b9e\u73b0\u4e86\u9ad8\u6d3b\u6027\u548c\u4f18\u5f02\u7684\u7a33\u5b9a\u6027\uff0c\u662f\u5927\u5e45\u51cf\u5c11\u5b9e\u9645\u5e94\u7528\u4e2d\u7684PEMFCs\u7684PGM\u8d1f\u8f7d\u91cf\uff0c\u4ece\u800c\u964d\u4f4e\u6210\u672c\u7684\u5173\u952e\u4e00\u6b65\uff0c\u6709\u671b\u8fdb\u4e00\u6b65\u63a8\u8fdbPEMFCs\u7684\u5e7f\u6cdb\u5e94\u7528\u3002<\/p>\n

\u4f5c\u8005\u4ecb\u7ecd<\/b><\/strong><\/p>\n

\u901a\u8baf\u4f5c\u8005\uff1a\u9ec4\u6631<\/b><\/strong>\uff0c\u7f8e\u56fd\u52a0\u5dde\u5927\u5b66\u6d1b\u6749\u77f6\u5206\u6821\u6750\u6599\u79d1\u5b66\u4e0e\u5de5\u7a0b\u7cfb\u6559\u6388\u3001\u535a\u58eb\u751f\u5bfc\u5e08\uff0c2009\u5e74\u83b7\u5f97\u7f8e\u56fd\u201c\u9752\u5e74\u79d1\u5b66\u5bb6\u603b\u7edf\u5956\u201d\uff1b2010\u5e74\u83b7\u5f97\u7f8e\u56fd\u56fd\u7acb\u536b\u751f\u7814\u7a76\u9662\u521b\u65b0\u5956\uff1b2018\u5e74\u83b7\u5f97\u7f8e\u56fd\u56fd\u5bb6\u79d1\u5b66\u57fa\u91d1\u4f1a\u7279\u522b\u521b\u610f\u5956\uff0c\u82f1\u56fd\u7687\u5bb6\u5316\u5b66\u4f1a\u58eb\uff08Fellow of RSC\uff09\uff0c\u7f8e\u56fd\u6750\u6599\u7814\u7a76\u5b66\u4f1a\u58eb\uff08Fellow of MRS\uff09\u3002\u8bfe\u9898\u7ec4\u957f\u671f\u6b22\u8fce\u672c\u79d1\u751f\u3001\u7855\u58eb\u7814\u7a76\u751f\u3001\u535a\u58eb\u7814\u7a76\u751f\u53ca\u535a\u58eb\u540e\u52a0\u5165\u3002<\/p>\n

\u8bfe\u9898\u7ec4\u7f51\u9875\uff1ahttp:\/\/yuhuanglab.seas.ucla.edu\/<\/p>\n

\u7b2c\u4e00\u4f5c\u8005\uff1a\u8d75\u7d2b\u9e4f<\/b><\/strong>\uff0c\u73b0\u4efb\u804c\u5317\u4eac\u7406\u5de5\u5927\u5b66\u6750\u6599\u5b66\u9662\uff0c\u6559\u6388\uff08\u804c\u79f0\uff09\uff0c\u535a\u58eb\u751f\u5bfc\u5e08\uff0c\u5165\u9009\u56fd\u5bb6\u6d77\u5916\u9ad8\u5c42\u6b21\u4eba\u624d\u5f15\u8fdb\u8ba1\u5212\u9752\u5e74\u9879\u76ee\u3002\u8bfe\u9898\u7ec4\u957f\u671f\u6b22\u8fce\u672c\u79d1\u751f\u3001\u7855\u58eb\u7814\u7a76\u751f\u3001\u535a\u58eb\u7814\u7a76\u751f\u53ca\u535a\u58eb\u540e\u52a0\u5165\u3002\u540c\u65f6\u6b22\u8fce\u5bf9\u6c22\u80fd\u53ca\u50ac\u5316\u611f\u5174\u8da3\u7684\u9752\u5e74\u5b66\u8005\u8054\u5408\u7ec4\u5efa\u56e2\u961f\u3002<\/p>\n

\u7f51\u9875\uff1ahttps:\/\/mse.bit.edu.cn\/szdw\/jcrc\/sqrc\/73e13268216b482180a7de985b47bdc2.htm<\/p>\n

\u7b2c\u4e00\u4f5c\u8005\uff1a\u5218\u6cfd\u5ef6<\/b><\/strong>\uff0c\u535a\u58eb\u7814\u7a76\u751f\uff0c\u73b0\u5c31\u8bfb\u4e8e\u52a0\u5dde\u5927\u5b66\u6d1b\u6749\u77f6\u5206\u6821\u3002<\/p>\n

 <\/p>\n

\u6587\u7ae0\u94fe\u63a5<\/b><\/strong><\/p>\n

https:\/\/www.nature.com\/articles\/s41565-022-01170-9<\/b><\/strong><\/p>\n

Zhao, Z., Liu, Z., Zhang, A.\u00a0et al.<\/i><\/em>\u00a0Graphene-nanopocket-encaged PtCo nanocatalysts for highly durable fuel cell operation under demanding ultralow-Pt-loading conditions.\u00a0Nat. Nanotechnol.<\/i><\/em>\u00a0(2022). https:\/\/doi.org\/10.1038\/s41565-022-01170-9<\/u><\/a><\/p>\n

 <\/p>\n

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