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Adv.<\/b><\/strong>\u4e0a\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe<\/strong>1\u00a0<\/strong>nTP\u5de5\u827a\u5236\u4f5c3D Pt\u7535\u50ac\u5316\u5242\u7684\u5de5\u827a\u793a\u610f\u56fe<\/strong> (A)\u4f7f\u7528nTP\u5de5\u827a\u5236\u4f5c3D Pt\u7535\u50ac\u5316\u5242\u7684\u5de5\u827a\u793a\u610f\u56fe\u3002<\/p>\n (B-D)\u5355\u5c42(B)\u3001\u53cc\u5c42(C)\u548c\u591a\u5c42(D)PtNAs\u7684\u626b\u63cf\u7535\u5b50\u663e\u5fae\u7167\u7247\uff08\u5de6\u8fb9\uff1a\u95f4\u8ddd\uff0c50 nm\/\u5bbd\u5ea6\uff0c20 nm\uff1b\u4e2d\u5fc3\uff1a\u95f4\u8ddd\uff0c200 nm\/\u5bbd\u5ea6\uff0c50 nm\uff1b\u53f3\uff1a\u95f4\u8ddd\uff0c1.2 \u03bcm\/\u5bbd\u5ea6\uff0c200 nm)\u3002<\/p>\n (E)\u5177\u670945\u00b0\u300130\u00b0\u548c\u72ec\u7acb\u7eb3\u7c73\u7ed3\u6784\u7684\u590d\u5408PtNAs\u3002<\/p>\n \u56fe<\/strong>2 PtNAs\u7684TEM\u8868\u5f81<\/strong> (A)\u9ad8\u5bc6\u5ea6PtNWs(\u95f4\u8ddd\uff0c200 nm\/\u5bbd\u5ea6\uff0c50 nm)\u793a\u610f\u56fe\u3002<\/p>\n (B, C) Pt\u7eb3\u7c73\u7ebf\u7684(B)\u9ad8\u5206\u8fa8\u7387TEM\u56fe\u50cf\u548c\u76f8\u5e94\u7684(C)\u6574\u4e2aHRTEM\u56fe\u50cf\u7684FFT(\u9ec4\u6846)\u3002<\/p>\n (D,E) 600\u2103\u70ed\u5904\u7406\u8fc7\u7a0b\u4e2d\u81f4\u5bc6PtNWs\u6cbfz\u65b9\u5411\u7684\u539f\u4f4dTEM-ASTAR\u6676\u4f53\u53d6\u5411\u56fe\u3002<\/p>\n \u56fe<\/strong>3 PtNAs\u7684XPS\u548cXAFS\u8868\u5f81<\/strong> (A) Pt (4f)\u7684XPS\u548c(B) Pt\/C\u548c\u81f4\u5bc6PtNA\u4e2dPt\u548cPt\u6c27\u5316\u4ea7\u7269\u7684\u6bd4\u7387\u3002<\/p>\n (C) Pt\/C\u548c\u81f4\u5bc6PtNA\u7684Pt L3<\/sub>\u8fb9X\u5c04\u7ebf\u5438\u9644\u8fd1\u8fb9\u7ed3\u6784\u5149\u8c31\u3002<\/p>\n (D) Pt-Pt\u914d\u4f4d\u6570\u548c(E) Pt\/C\u548c\u81f4\u5bc6PtNA\u7684Pt L3<\/sub>\u8fb9\u7684\u5085\u91cc\u53f6\u53d8\u6362\u5e45\u5ea6\u5149\u8c31\u3002<\/p>\n \u56fe<\/strong>4 \u6db2\u4f53\u534a\u7535\u6c60\u8bd5\u9a8c<\/strong> (A)\u5728\u73bb\u78b3\u6216\u819c\u57fa\u5e95\u4e0a\u5236\u5907PtNA\u3002<\/p>\n (B,C)\u6bd4\u8f83\u4e86Pt\/C\u548c\u81f4\u5bc6PtNA\u7684(B)ORR\u548c(C)CV\u66f2\u7ebf\u3002\u63d2\u56fe\u8868\u793a\u76f8\u5e94\u7684Tafel\u56fe\u3002<\/p>\n (D)Pt\/C\u548c\u81f4\u5bc6PtNA\u7684\u8d28\u91cf\u548c\u6bd4\u6d3b\u6027\u3002<\/p>\n (E)Pt\/C\u548c\uff08F\uff09\u81f4\u5bc6PtNA\u7684\u52a0\u901f\u964d\u89e3\u8bd5\u9a8c\uff08ADT\uff09\u671f\u95f4\u7684ORR\u66f2\u7ebf\uff080.6\u81f31.1V\uff0c6000\u4e2a\u5faa\u73af\uff09\u3002<\/p>\n (G) \u5728ADT\u671f\u95f4Pt\/C\u548c\u81f4\u5bc6PtNA\u7684ECSA\u4fdd\u7559\u7387\u3002ORR\u66f2\u7ebf\u662f\u5728O2<\/sub>\u9971\u548c\u76840.1M HClO4<\/sub>\u6eb6\u6db2\u4e2d\u83b7\u5f97\u7684\uff0c\u800cCV\u548cADT\u6d4b\u8bd5\u662f\u5728Ar\u9971\u548c\u76840.1M HClO4<\/sub>\u6eb6\u6db2\u4e2d\u8fdb\u884c\u7684\u3002<\/p>\n \u56fe<\/strong>5<\/strong>\u00a0\u591a\u5c3a\u5ea6PtNA\u548c\u5355\u7535\u6c60\u8bd5\u9a8c<\/strong> (A)\u591a\u5c3a\u5ea6PtNA\u7684\u793a\u610f\u56fe\u3002<\/p>\n (B,C)\u5728H2<\/sub>\/\u7a7a\u6c14(B)\u65e0\u51fa\u53e3\u538b\u529b\u548c(C)\u603b\u51fa\u53e3\u538b\u529b\u4e3a150\u00a0kPa\u65f6\uff0cPt\/C\u548c\u5404\u79cdPtNA\u57fa\u7684MEAs\u7684\u6781\u5316\u66f2\u7ebf\u3002<\/p>\n (D)\u6c27\u6c14\u589e\u76ca\u5206\u522b\u7528\u66b4\u9732\u5728\u6c27\u6c14\u6216\u7a7a\u6c14\u4e2d\u7684\u7535\u4f4d\u5dee\u6765\u8ba1\u7b97\u3002<\/p>\n (E)\u5728\u603b\u51fa\u53e3\u538b\u529b\u4e3a150kPa\u7684H2<\/sub>\/\u7a7a\u6c14\u73af\u5883\u4e0b\uff0c\u663e\u793a\u4e86Pt\/C\u548c\u5404\u79cdPtNAs MEA\u7684\u529f\u7387\u5bc6\u5ea6\u5dee\u5f02\u3002<\/p>\n (F)Pt\/C\u548c(G)\u591a\u5c3a\u5ea6PtNA\u5728ADT\uff081.0\u81f31.5V\uff0c5000\u6b21\u5faa\u73af\uff09\u524d\u540e\u7684CV\u66f2\u7ebf\u3002<\/p>\n \u56fe<\/strong>6<\/strong>\u00a0\u57fa\u4e8e\u8ba1\u7b97\u6d41\u4f53\u529b\u5b66\u7684\u6570\u503c\u6a21\u62df<\/strong> (A)\u57281 atm\u4e0b\uff0c\u6a21\u62df\uff08\u7ebf\uff09\u548c\u6d4b\u91cf\uff08\u7b26\u53f7\uff09\u7684\u6781\u5316\u66f2\u7ebf\u7684\u6bd4\u8f83\u3002<\/p>\n (B)\u7531\u4e8eORR\u52a8\u529b\u5b66\u6781\u5316\u548c\u6b27\u59c6\u6781\u5316\u5728\u9634\u6781\u50ac\u5316\u5242\u5c42\u4e0a\u7684\u5355\u4e2a\u7535\u538b\u635f\u5931\u3002<\/p>\n (C)\u9634\u6781\u50ac\u5316\u5242\u5c42\u7684\u5e73\u5747\u6c27\u6d53\u5ea6\u4e0e\u5de5\u4f5c\u7535\u6d41\u5bc6\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n (D)\u57281.0 A cm\u22122<\/sup>\u6761\u4ef6\u4e0b\uff0c\u4e09\u79cd\u4e0d\u540c\u9634\u6781\u50ac\u5316\u5242\u5c42\u8bbe\u8ba1\u7684\u901a\u9762\u6db2\u4f53\u9971\u548c\u5ea6\u66f2\u7ebf\u6bd4\u8f83\u3002<\/p>\n \u3010<\/strong>\u5c0f\u7ed3<\/strong>\u3011<\/strong><\/p>\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u56e2\u961f\u8bc1\u660e\u4e86\u901a\u8fc73D\u5806\u53e0\u6253\u5370\u5177\u6709\u53ef\u63a7\u76f4\u5f84\u548c\u95f4\u8ddd\u7684\u5bf9\u9f50\u7684Pt\u7eb3\u7c73\u7ebf\u6a21\u5757\u7684\u591a\u5c3a\u5ea6PtNA\uff0c\u5176\u4f5c\u4e3aPEMFC\u7684\u9ad8\u6027\u80fd\u7535\u50ac\u5316\u5242\u3002\u7535\u5316\u5b66\u8868\u5f81\u8868\u660e\uff0c\u5355\u6a21\u7684PtNAs\u5728ECSA\u548c\u4f20\u8d28\u6027\u80fd\u65b9\u9762\u5747\u4e0d\u7406\u60f3\uff0c\u5efa\u8bae\u8bbe\u8ba1\u548c\u6784\u5efa\u7531\u5bc6\u96c6\u548c\u7a00\u758f\u6a21\u5757\u7ec4\u6210\u7684\u591a\u5c3a\u5ea6PtNA\uff0c\u4ee5\u6700\u5927\u9650\u5ea6\u5730\u63d0\u9ad8\u5176\u7535\u5316\u5b66\u6027\u80fd\u3002\u901a\u8fc7\u7406\u8bba\u7814\u7a76\u548c\u5b9e\u9a8c\u7814\u7a76\u76f8\u7ed3\u5408\uff0c\u8bc4\u4ef7\u50ac\u5316\u5242\u7684\u5229\u7528\u7387\u548c\u6bd4\u6709\u6548\u8868\u9762\u79ef\uff0c\u786e\u5b9a\u50ac\u5316\u5242\u7684\u6700\u4f73\u7ed3\u6784\uff0c\u63a8\u5bfc\u51fa\u591a\u5c3a\u5ea63D PtNA\u50ac\u5316\u5242\u7684\u793a\u8303\u3002\u6240\u5f97\u7684\u591a\u5c3a\u5ea63D Pt\u7535\u6781\u7684\u6700\u5927\u529f\u7387\u5bc6\u5ea6\u6bd4Pt\/C\u7535\u6781\u9ad843%\uff0c5000\u6b21\u5faa\u73af\u7684ADT\u663e\u793a\uff0c\u591a\u5c3a\u5ea6PtNA\u4ec5\u635f\u5931\u5176\u521d\u59cbECSA\u76845%\uff0c\u8fd9\u660e\u663e\u4f18\u4e8ePt\/C\u7535\u6781\u768469%\u7684\u635f\u5931\u3002<\/p>\n<\/p>\n
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