{"id":258730,"date":"2024-03-22T06:13:27","date_gmt":"2024-03-21T22:13:27","guid":{"rendered":"\/\/m.iemloyee.com\/?p=258730"},"modified":"2024-03-21T21:20:46","modified_gmt":"2024-03-21T13:20:46","slug":"%e9%87%8d%e5%ba%86%e7%a7%91%e6%8a%80%e5%a4%a7%e5%ad%a6nano-materials-science%e2%88%a3%e5%8e%8b%e7%bc%a9%e5%ba%94%e5%8f%98%e5%92%8c%e6%8a%97%e6%b0%a7%e5%8c%96%e5%8d%8f%e5%90%8c%e5%a2%9e%e5%bc%ba","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=258730","title":{"rendered":"\u91cd\u5e86\u79d1\u6280\u5927\u5b66Nano Materials Science\u2223\u538b\u7f29\u5e94\u53d8\u548c\u6297\u6c27\u5316\u534f\u540c\u589e\u5f3a\u94c2\u94dc\u5408\u91d1\u50ac\u5316\u5242\u6c27\u8fd8\u539f\u6d3b\u6027\u548c\u7a33\u5b9a\u6027"},"content":{"rendered":"
01<\/strong>\u5bfc\u8bfb<\/strong><\/p>\n \u8d28\u5b50\u4ea4\u6362\u819c\u71c3\u6599\u7535\u6c60\uff08PEMFCs\uff09\u7531\u4e8e\u5176\u5177\u6709\u96f6\u78b3\u6392\u653e\u548c\u9ad8\u80fd\u91cf\u8f6c\u6362\u6548\u7387\u7684\u7279\u70b9\u800c\u5907\u53d7\u9752\u7750\u3002\u5728\u6c27\u8fd8\u539f\u53cd\u5e94\uff08ORR\uff09\u4e2d\uff0c\u4ee5\u56db\u7535\u5b50\u8f6c\u79fb\u673a\u7406\u4e3a\u4e3b\u7684\u94c2\u57fa\u50ac\u5316\u5242\u8868\u73b0\u51fa\u9ad8\u52a8\u529b\u5b66\u6d3b\u6027\u3002\u7136\u800c\uff0c\u7531\u4e8e\u94c2\u9ad8\u6602\u7684\u6210\u672c\u548c\u8d44\u6e90\u7a00\u7f3a\uff0cPEMFCs\u7684\u5927\u89c4\u6a21\u5546\u4e1a\u5316\u5e94\u7528\u4ecd\u9762\u4e34\u4e25\u5cfb\u6311\u6218\u3002<\/p>\n \u5c06\u94c2\u4e0e\u8fc7\u6e21\u91d1\u5c5e\uff08Fe\u3001Co\u3001Ni\u7b49\uff09\u5408\u91d1\u5316\u662f\u51cf\u5c11\u8d35\u91d1\u5c5e\u7528\u91cf\u5e76\u63d0\u9ad8\u5176ORR\u6027\u80fd\u7684\u6709\u6548\u7b56\u7565\u3002\u7136\u800c\uff0c\u5728\u9178\u6027\u6216\u8150\u8680\u6027\u73af\u5883\u4e2d\u8fdb\u884c\u52a0\u901f\u8001\u5316\u8bd5\u9a8c\u65f6\uff0c\u8fc7\u6e21\u91d1\u5c5e\u901a\u5e38\u4f1a\u4ece\u5408\u91d1\u4e2d\u6d78\u51fa\u6216\u6eb6\u89e3\uff0c\u4ece\u800c\u6781\u5927\u5236\u7ea6\u4e86\u819c\u7535\u6781\u7684\u8010\u53d7\u6027\u3002\u4e0e Fe2+<\/sup>\/Fe (-0.5 V)\u3001Co2+<\/sup>\/Co (-0.2 V) \u548c Ni2+<\/sup>\/Ni (0.1 V) \u76f8\u6bd4\uff0cCu2+<\/sup>\/Cu \u5177\u6709\u66f4\u6b63\u7684\u7535\u4f4d\uff080.3 V\uff0c\u76f8\u6bd4\u53ef\u9006\u6c22\u7535\u6781 (RHE) \uff09\uff0c\u8fd9\u8868\u660e\u94dc\u5728\u76f8\u540c\u7535\u5316\u5b66\u6761\u4ef6\u4e0b\u5177\u6709\u66f4\u4f18\u5f02\u7684\u7a33\u5b9a\u6027\u548c\u6297\u6eb6\u89e3\u6027\uff0c\u56e0\u6b64\u94dc\u662f\u94c2\u57fa\u5408\u91d1\u66f4\u7406\u60f3\u7684\u5019\u9009\u6750\u6599\u3002<\/p>\n \u53e6\u4e00\u65b9\u9762\uff0c\u5728\u5e94\u53d8\u6548\u5e94\u548c\u914d\u4f53\u6548\u5e94\u4f5c\u7528\u4e0b\uff0c\u8fc7\u6e21\u91d1\u5c5e\u53ef\u901a\u8fc7\u4f18\u5316\u94c2\u7684\u7535\u5b50\u7ed3\u6784\u6765\u8c03\u8282\u542b\u6c27\u4e2d\u95f4\u7269\u79cd\u7684\u5438\u9644\u5f3a\u5ea6\uff0c\u4ece\u800c\u63d0\u9ad8\u94c2\u57fa\u5408\u91d1\u50ac\u5316\u5242\u7684\u7535\u50ac\u5316\u6027\u80fd\u3002\u5f53\u5177\u6709\u4e0d\u540c\u6676\u683c\u53c2\u6570\u7684\u4e24\u79cd\u5143\u7d20\u76f4\u63a5\u63a5\u89e6\u4ea7\u751f\u7684\u6676\u683c\u5931\u914d\u73b0\u8c61\uff0c\u4f1a\u5bfc\u81f4\u5404\u6676\u4f53\u6210\u5206\u53d1\u751f\u6676\u683c\u7578\u53d8\u3002\u5728\u5e94\u53d8\u6548\u5e94\u4f5c\u7528\u4e0b\uff0c\u4f1a\u4f7f\u5f97\u91d1\u5c5e\u7684 d \u5e26\u4e2d\u5fc3\u66f4\u63a5\u8fd1\u8d39\u7c73\u80fd\u7ea7\uff0c\u8fdb\u800c\u4f18\u5316\u50ac\u5316\u5242\u8868\u9762\u5bf9\u4e8e\u6c27\u5206\u5b50\u7684\u5438\u9644\u80fd\uff0c\u63d0\u9ad8\u91d1\u5c5e\u8868\u9762\u7684\u53cd\u5e94\u6d3b\u6027\u3002\u6b64\u5916\uff0c\u5728PEMFCs\u5b9e\u9645\u5de5\u51b5\u4e0b\uff0c\u5f53\u94c2\u57fa\u50ac\u5316\u5242\u5728\u7535\u6781\u7535\u52bf\uff1e0.85 V\u548cpH\uff1c2\u65f6\uff0c\u96f6\u4ef7\u94c2\u4f1a\u81ea\u53d1\u7684\u53d1\u751f\u6c27\u5316\u53cd\u5e94\u5f62\u6210\u4e8c\u4ef7\u94c2\u79bb\u5b50\u5bfc\u81f4\u94c2\u7eb3\u7c73\u9897\u7c92\u5feb\u901f\u6eb6\u89e3\u6216\u6d88\u5931\uff0c\u9020\u6210\u4e0d\u53ef\u907f\u514d\u7684\u7535\u5316\u5b66\u6d3b\u6027\u6bd4\u8868\u9762\u79ef\u548c\u534a\u6ce2\u7535\u4f4d\u7684\u6025\u5267\u8870\u51cf\u3002\u56e0\u6b64\uff0c\u5f00\u53d1\u540c\u65f6\u5177\u5907\u9ad8\u6d3b\u6027\u548c\u9ad8\u7a33\u5b9a\u6027\u7684\u94c2\u57fa\u5408\u91d1\u50ac\u5316\u5242\u662fPEMFCs\u9886\u57df\u4e2d\u6700\u6709\u6548\u7684\u624b\u6bb5\uff0c\u4f46\u76ee\u524d\u4ecd\u5177\u6709\u5f88\u5927\u6311\u6218\u3002<\/p>\n 02<\/strong>\u6210\u679c\u63a0\u5f71<\/strong><\/p>\n \u91cd\u5e86\u79d1\u6280\u5927\u5b66\u5f20\u5747<\/strong>\u3001\u9646\u4e16\u7389<\/strong>\u63d0\u51fa\u4e86\u4e00\u79cd\u538b\u7f29\u5e94\u53d8\u548c\u6297\u6c27\u5316\u534f\u540c\u517c\u987e\u63d0\u5347\u94c2\u94dc\u5408\u91d1\u50ac\u5316\u5242\u6c27\u8fd8\u539f\u6d3b\u6027\u548c\u7a33\u5b9a\u6027\u7684\u7b56\u7565\u3002\u901a\u8fc7\u5728\u94c2\u6676\u683c\u4e2d\u5f15\u5165\u94dc\u539f\u5b50\uff0c\u8bf1\u5bfc\u94c2\u6676\u683c\u4ea7\u751f\u538b\u7f29\u5e94\u53d8\uff0c\u8c03\u63a7\u94c2\u6d3b\u6027\u4f4d\u7684d\u5e26\u4e2d\u5fc3\uff0c\u8fdb\u800c\u4f18\u5316\u94c2\u94dc\u5408\u91d1\uff08111\uff09\u6676\u9762\u5bf9\u6c27\u6c14\u5206\u5b50\u7684\u5438\u9644\u3002\u6b64\u5916\uff0c\u94dc\u539f\u5b50\u4f5c\u4e3a\u727a\u7272\u9633\u6781\u5728 PEMFC \u8fd0\u884c\u8fc7\u7a0b\u4e2d\u4f18\u5148\u53d1\u751f\u6c27\u5316\uff0c\u6c27\u5316\u7684\u94dc\u53ef\u4ee5\u5f88\u597d\u7684\u4fdd\u62a4Pt(0)\u6d3b\u6027\u4f4d\uff0c\u4ece\u800c\u63d0\u5347\u4e86\u6574\u4f53\u94c2\u94dc\u5408\u91d1\u50ac\u5316\u5242\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n \u8fd9\u9879\u5de5\u4f5c\u5145\u5206\u9a8c\u8bc1\u4e86\u538b\u7f29\u5e94\u53d8\u548c\u6297\u6c27\u5316\u534f\u540c\u673a\u5236\u5728\u517c\u987e\u589e\u5f3a\u94c2\u94dc\u5408\u91d1\u50ac\u5316\u5242\u6c27\u8fd8\u539f\u53cd\u5e94\u6d3b\u6027\u548c\u7a33\u5b9a\u6027\u65b9\u9762\u7684\u4ef7\u503c\uff0c\u4e3a\u71c3\u6599\u7535\u6c60\u7684\u5546\u4e1a\u5316\u8fdb\u7a0b\u63d0\u4f9b\u4e86\u7406\u8bba\u548c\u5b9e\u9a8c\u57fa\u7840\u3002<\/p>\n 03<\/strong>\u56fe\u6587\u89e3\u6790<\/strong><\/p>\n \u56fe<\/strong> 1<\/strong> (a) PtCu\/N-HCS \u50ac\u5316\u5242\u7684\u5236\u5907\u793a\u610f\u56fe\uff1b(b-d\uff09Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS\u7684TEM\u56fe\u53ca\u5176\uff08f\uff09\u70b9\u7f3a\u9677\u3001\uff08g\uff09\u7ebf\u7f3a\u9677\uff08\u8fb9\u7f18\u4f4d\u9519\uff09\u548c\uff08h\uff09\u5e73\u9762\u7f3a\u9677\uff08\u5c0f\u89d2\u5ea6\u6676\u754c\uff09\uff1b\uff08i-m\uff09Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS\u7684HAADF-STEM\u56fe\u50cf\u548c\u5143\u7d20mapping\u56fe\u3002<\/p>\n \u56fe<\/strong>2<\/strong> (a) Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS\u3001Pt\/N-HCS\u3001Pt0.38<\/sub>Cu0.62<\/sub>\/HCS\u50ac\u5316\u5242 \u7684XRD\u8c31\u56fe\uff1b(b, c, e, f)\u5546\u4e1aPt\/C\u3001Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS\u3001Pt\/N-HCS \u548cPt0.38<\/sub>Cu0.62<\/sub>\/HCS\u50ac\u5316\u5242\u7684Pt 4f XPS\u8c31\u56fe\uff1b\uff08d\uff09Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS\u3001Pt0.38<\/sub>Cu0.62<\/sub>\/HCS\u50ac\u5316\u5242\u7684Cu 2p XPS\u8c31\u56fe\u3002<\/p>\n \u56fe<\/strong>3<\/strong> (a) \u5546\u4e1a Pt\/C\u3001Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS\u3001Pt\/N-HCS \u548c Pt0.38<\/sub>Cu0.62<\/sub>\/HCS \u50ac\u5316\u5242\u57280.1 M HClO4<\/sub>\u6eb6\u6db2\u4e2d\u7684LSV\u66f2\u7ebf\u3001 (b)\u8d28\u91cf\u6d3b\u6027(MA) \u548c ECSA\u3001(c)Tafel \u56fe\u3001(d) \u7535\u5b50\u8f6c\u79fb\u6570\u548c H2<\/sub>O2<\/sub> \u4ea7\u7387\u3001(e) \u7535\u5316\u5b66\u963b\u6297\u8c31\u548c(f) \u6297\u7532\u9187\u6e17\u900f\u6027\u80fd\u3002<\/p>\n \u56fe<\/strong>4 <\/strong>\uff08a\uff09Pt(111)\u3001\uff08b\uff09Cu(111)\u548c\uff08c\uff09PtCu(111)\u6676\u9762\u4e0aO2<\/sub>\u7684\u7535\u8377\u5bc6\u5ea6\u5dee\u5206\u56fe\uff0c\u5176\u4e2d\u9ec4\u8272\u548c\u84dd\u7eff\u8272\u533a\u57df\u5206\u522b\u8868\u793a\u7535\u5b50\u7684\u79ef\u7d2f\u548c\u8017\u5c3d\uff1b(d) Cu (111)\u3001Pt (111) \u548c PtCu (111) d \u5e26\u4e2d\u5fc3\u7684 PDOS\u56fe\uff1b(e) Cu (111)\u3001Pt (111) \u548c PtCu (111) d \u5e26\u4e2d\u5fc3\u4e0e O2<\/sub> \u5438\u9644\u80fd\u7684\u76f8\u5173\u6027\uff1b (f) \u5728PtCu (111) \u4e0a\u5404\u5438\u9644\u4e2d\u95f4\u4f53\uff08*OOH\u3001*O\u3001*OH\uff09\u80fd\u91cf\u6700\u4f18\u7684\u6c27\u8fd8\u539f\u53cd\u5e94\u8def\u5f84\uff1b(g) \u7535\u6781\u7535\u4f4d\u4e3a\u96f6\u65f6\uff0cCu (111)\u3001Pt (111) \u548c PtCu (111) \u4e0a\u53d1\u751f\u6c27\u8fd8\u539f\u53cd\u5e94\u65f6\u5409\u5e03\u65af\u81ea\u7531\u80fd\u53d8\u5316\u56fe\u3002<\/p>\n \u56fe<\/strong>5 <\/strong>(a) Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS\u4e0e\u5546\u4e1aPt\/C\u50ac\u5316\u5242\u5728\u52a0\u901f\u8001\u5316\u6d4b\u8bd5\u524d\u540e\u7684 LSV \u66f2\u7ebf\uff1b(b) Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS \u5728\u7a33\u5b9a\u6027\u6d4b\u8bd5\u524d\u3001\u540e\u7684Pt 4f XPS\u8c31\u56fe\u3001(c) Cu 2p XPS\u8c31\u56fe\u3001(d) N 1s XPS\u8c31\u56fe\uff1b(e-g) Pt0.38<\/sub>Cu0.62<\/sub>\/N-HCS \u5728\u52a0\u901f\u8001\u5316\u6d4b\u8bd5\u540e\u7684TEM\u56fe\u548cHR-TEM\u56fe\u3001(h-m) HAADF-STEM \u56fe\u548c\u5143\u7d20mapping\u56fe\u3002<\/p>\n
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