{"id":21885,"date":"2016-06-24T22:00:27","date_gmt":"2016-06-24T14:00:27","guid":{"rendered":"\/\/m.iemloyee.com\/?p=21885"},"modified":"2016-06-25T16:13:59","modified_gmt":"2016-06-25T08:13:59","slug":"science-advances%e6%96%b0%e5%9e%8b%e7%9f%b3%e5%a2%a8%e7%83%af%e5%af%b9%e7%94%b5%e6%9e%81%e5%ae%8c%e8%83%9cpt%e7%94%b5%e6%9e%81","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=21885","title":{"rendered":"Science Advances:\u4f5c\u4e3a\u67d3\u654f\u592a\u9633\u80fd\u7535\u6c60\u5bf9\u7535\u6781\u7684\u65b0\u578b\u77f3\u58a8\u70ef\u5b8c\u80dcPt\u7535\u6781"},"content":{"rendered":"

\u67d3\u6599\u654f\u5316\u592a\u9633\u80fd\u7535\u6c60\u662f\u7b2c\u4e09\u4ee3\u592a\u9633\u80fd\u7535\u6c60\uff0c\u4e3b\u8981\u662f\u7531\u5438\u9644\u4e0a\u67d3\u6599\u7684TiO2<\/sub>\u5149\u9633\u6781\uff0c\u7535\u89e3\u6db2\u548c\u5bf9\u7535\u6781\u7ec4\u6210\u3002\u5176\u4e2d\uff0c\u666e\u904d\u4f7f\u7528\u7684\u7535\u89e3\u6db2\u548c\u5bf9\u7535\u6781\u5206\u522b\u662fI–<\/sup>\/I3<\/sub>–<\/sup>\u548c\u94c2\u7535\u6781\uff0c\u4f46\u56e0\u94c2\u91d1\u5c5e\u4ef7\u683c\u8f83\u9ad8\uff0c\u9650\u5236\u4e86\u5b83\u5728\u67d3\u6599\u7535\u6c60\u4e2d\u7684\u5e94\u7528\u3002\u78b3\u57fa\u6750\u6599\u6210\u4e3a\u66ff\u4ee3\u94c2\uff08Pt\uff09\u7684\u70ed\u95e8\u5019\u9009\u4eba\u3002\u8fd9\u79cd\u6750\u6599\u5728Co(\u2161)\/Co(\u2162)\u7535\u89e3\u6db2\u4e2d\u8868\u73b0\u51fa\u6765\u5b8c\u7f8e\u7684\u50ac\u5316\u6548\u679c\uff0c\u4f46\u662f\u5728I–<\/sup>\/I3<\/sub>–<\/sup>\u7535\u89e3\u6db2\u4e2d\u7684\u50ac\u5316\u6d3b\u6027\u4e0d\u591f\uff0c\u540c\u65f6\uff0c\u5b83\u5728\u8be5\u7535\u89e3\u6db2\u4e2d\u7684\u4f5c\u7528\u673a\u7406\u76ee\u524d\u4e5f\u6ca1\u6709\u5145\u5206\u7684\u63a2\u7d22\u51fa\u6765\u3002<\/p>\n

\u8fd1\u671f\uff0c\u97e9\u56fdHan Kyu Kim, Yong-hoon Kim\u53caJong-Beom Baek\u7b49\u7814\u7a76\u8005\u62a5\u9053\u4e86\u5229\u7528<\/strong>Se<\/strong>\u63ba\u6742\u7684\u77f3\u58a8\u7eb3\u7c73\u7247\uff08<\/strong>SeGnPs<\/strong>\uff09\u4f5c\u4e3a\u5bf9\u7535\u6781\u5206\u522b\u4f5c\u7528\u5728<\/strong>I–<\/sup>\/I3<\/sub>–<\/sup><\/strong>\u548c<\/strong>Co(<\/strong>\u2161<\/strong>)\/Co(<\/strong>\u2162<\/strong>)<\/strong>\u70b9\u89e3\u6db2\u4e2d\uff0c\u5176\u7535\u6c60\u7684\u5149\u7535\u8f6c\u5316\u6548\u7387\u5747\u9ad8\u4e8e<\/strong>Pt<\/strong>\u7535\u6781\u4f5c\u4e3a\u5bf9\u7535\u6781\u7684\u7535\u6c60\u6548\u7387<\/strong>\u3002\u5e76\u901a\u8fc7\u7535\u5316\u5b66\u52a8\u529b\u5b66\uff0c\u5bc6\u5ea6\u6cdb\u51fd\u6570\uff08DFT\uff09\u4ee5\u53ca\u975e\u5e73\u8861\u6001\u683c\u6797\u51fd\u6570(NEGF)\u7b49\u624b\u6bb5\u63a2\u7a76\u4e86\u5bf9\u7535\u6781\u4e0e\u7535\u89e3\u6db2\u7684\u4f5c\u7528\u673a\u7406\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u56fe\u6587\u8be6\u89e3\u3002<\/strong><\/p>\n

1. SeGnPs<\/strong>\u7684\u7ed3\u6784\u8868\u5f81<\/strong><\/p>\n

\"F1.large\"<\/p>\n

\u56fe1. A\u4e3a\u63a8\u65ad\u51fa\u7684SeGnPs\u539f\u5b50\u6a21\u578b\uff0cB\u539f\u5b50\u5206\u8fa8\u7387\u900f\u5c04\u7535\u955c\uff08AR-TEM\uff09\u4e0b\u7684SeGnPs\u8fb9\u754c\u7167\u7247\uff0cC\u548cD\u662f\u653e\u5927\u7684\u900f\u5c04\u7535\u955c\u7167\u7247\uff0c E\u548cF\u5206\u522b\u662f\u6276\u624b\u6905\u548c\u952f\u9f7f\u5f62\u7684\u77f3\u58a8\u70ef\u8fb9\u7f18\u7684\u9006\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362(IFFT)\u7167\u7247<\/p>\n

SeGnPs<\/strong>\u901a\u8fc7\u673a\u68b0\u5316\u5b66\u7684\u65b9\u6cd5\u5c06<\/strong>Se<\/strong>\u7c89\u548c\u77f3\u58a8\u70ef\u7ed3\u5408\u5728\u4e00\u5757<\/strong>\u3002\u5176\u4e2dSe\u548cC\u5f62\u6210\u7684C=Se\u3001C-Se-C\u952e\u5df2\u7ecf\u901a\u8fc7AR-TEM\u6d4b\u8bd5\u624b\u6bb5\uff08\u56fe1.B\uff09\u8868\u5f81\u51fa\u6765\u3002\u9ad8\u89d2\u73af\u5f62\u6697\u573a\u4e0b\u7684\u626b\u63cf\u900f\u5c04\u56fe\u7247\uff08\u56fe1. C\uff09\u8bc1\u5b9e\u4e86Se\u539f\u5b50\u7684\u5b58\u5728\uff0c\u4f46\u5e76\u975e\u56e2\u805a\u7684Se\u3002\u7ed3\u5408\u56fe1. E\u548cF\uff0c\u53ef\u4ee5\u786e\u5b9aSe\u539f\u5b50\u8fde\u63a5\u5728\u6276\u624b\u6905\u548c\u952f\u9f7f\u5f62\u8fb9\u7f18\u7684\u77f3\u58a8\u70ef\u4e0a\uff0c\u800c\u8fd9\u548c\u56fe1. A\u7684\u63a8\u6d4b\u521a\u597d\u662f\u543b\u5408\u7684\u3002<\/p>\n

2.<\/strong>\u00a0SeGnPs<\/strong>\u7684\u7535\u50ac\u5316\u6d3b\u6027<\/strong><\/p>\n

\"F2.large\"<\/p>\n

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3.<\/strong>\u7406\u8bba\u8ba1\u7b97<\/strong><\/p>\n

\"F3.large\"<\/p>\n

\u56fe3. A \u00a0Se\u539f\u5b50\u5728\u6276\u624b\u6905\u548c\u952f\u9f7f\u5f62\u8fb9\u7f18\u7684\u77f3\u58a8\u70ef\u7684\u4f4d\u7f6e\uff0cB SeGnPs\u548c\u77f3\u58a8\u70ef\u5206\u522b\u505a\u5bf9\u7535\u6781\u7684\u7535\u6c60\u7684I-V\u66f2\u7ebf\u5bf9\u6bd4\uff0c\u9876\u90e8\u662f\u9a6c\u5229\u80af\u7535\u8377\u6570\u91cf\u88ab\u5f15\u7528\u5230\u4e86\u539f\u5b50\u7ed3\u6784\u4e2d\uff0cC \u4e3a\u5728SeGnPs\u8868\u9762\u4e0a\u7684\u7898\u8fd8\u539f\u53cd\u5e94\u793a\u610f\u56fe\uff0cD \u662fSeGnPs\u5bf9\u7535\u6781\u5728\u4e0d\u540c\u6e29\u5ea6\u4e0b\u7684\u4ea4\u6d41\u963b\u6297\u56fe\u8c31<\/p>\n

\u8be5\u8bfe\u9898\u7ec4\u5f15\u5165\u4e86\u5bc6\u5ea6\u6cdb\u51fd\u6570\u4ee5\u53ca\u975e\u5e73\u8861\u6001\u683c\u6797\u51fd\u6570\u7b49\u624b\u6bb5\u6765\u7814\u7a76\u5bf9\u7535\u6781\u548c\u7535\u89e3\u6db2\u754c\u9762\u53bb\u6e05\u6670\u5256\u6790\u4e86\u5bf9\u7535\u6781\u4e0e\u7898\u7684\u8fd8\u539f\u53cd\u5e94\u7684\u673a\u7406<\/strong>\u3002\u901a\u8fc7\u4e0a\u9762\u7684\u89e3\u6790\uff0c\u53ef\u4ee5\u786e\u5b9aSe\u539f\u5b50\u7684\u4f4d\u7f6e\u662f\u5728\u77f3\u58a8\u70ef\u7684\u8fb9\u754c\u4e0a\uff0c\u57fa\u4e8e\u8fd9\u70b9\uff0c\u5efa\u7acbSeGnPs\u6a21\u578b\u5982\u56fe3. A\u3002\u7ed3\u5408\u4ea4\u6d41\u963b\u6297\u7684\u534a\u5706(\u56fe2. B)\uff0c\u53ef\u4ee5\u786e\u5b9a\u7b2c\u4e00\u4e2a\u534a\u5706\u53cd\u5e94\u7684\u6765\u6e90\u4e8e\u77f3\u58a8\u70ef\u57fa\u5730\u5e73\u9762\uff0c\u7b2c\u4e8c\u4e2a\u534a\u5706\u4ee3\u8868\u7684\u662f\u7898\u79bb\u5b50\u7684\u8fd8\u539f\u53cd\u5e94\u548c\u7535\u8377\u8f6c\u79fb\u7684\u8fc7\u7a0b\u3002\u901a\u8fc7\u8ba1\u7b97\u53d1\u73b0\u7898\u79bb\u5b50\uff08I–<\/sup>\u548cI3<\/sub>–<\/sup>\uff09\u662f\u5438\u9644\u5728\u77f3\u58a8\u70ef\u7684\u57fa\u5e95\u5e73\u9762\u3002\u8fd9\u5c31\u53ef\u80fd\u4f1a\u5bfc\u81f4\u77f3\u58a8\u70ef\u5e26\u7684N\u578b\u8f6c\u53d8\uff0c\u4ece\u800c\u663e\u8457\u63d0\u9ad8\u7535\u6c60\u7684\u7535\u6d41\uff08\u56fe3. B\uff09\u3002\u5728\u9ad8\u6e29\u60c5\u51b5\u4e0b\uff0c\u56e0\u4e3a\u70ed\u529b\u5b66\u7684\u6ce2\u52a8\uff0c\u7535\u89e3\u6db2\u548c\u5bf9\u7535\u6781\u7684\u7c98\u7ed3\u5ea6\u5c06\u4f1a\u4e25\u91cd\u524a\u5f31\uff0c\u8fd9\u5c31\u53ef\u4ee5\u89e3\u91ca\u5728\u56fe2. A\u7684\u4ea4\u6d41\u963b\u6297\u4e2d\u7b2c\u4e00\u4e2a\u534a\u5706\u7684\u6d88\u5931\u662f\u56e0\u4e3a\u9ad8\u6e29\u6781\u9650\u7684\u5b58\u5728\u3002\u56fe3. C\u662f\u57fa\u4e8e\u7406\u8bba\u8ba1\u7b97\u7684\u7ed3\u679c\uff0c\u00a0\u00a0\u00a0 \u7ed3\u5408\u8bd5\u9a8c\u548c\u7406\u8bba\u8be5\u7ec4\u63a8\u6d4b\u51fa\u4e86\u65b0\u7684\u7b49\u6548\u7535\u8def\u56fe\u3002\u9996\u5148\u7b2c\u4e00\u4e2a\u534a\u5706\u4ee3\u8868\u7684\u662f\u4f20\u8f93\u7535\u963b\uff08Rtm<\/sub>\uff09\u548c\u56e0\u4e3a\u7898\u79bb\u5b50\u5728\u5bf9\u7535\u6781\u5e73\u9762\u4e0a\u7684\u5438\u6536\u9020\u6210\u7684\u7535\u5bb9\uff08Cad<\/sub>\uff09\uff0c\u7b2c\u4e8c\u4e2a\u534a\u5706\u4ee3\u8868\u7684\u662f\u7535\u8377\u4f20\u8f93\u7535\u963b\uff08Rct<\/sub>\uff09\u548c\u5728\u5bf9\u7535\u6781\u548c\u7535\u89e3\u6db2\u754c\u9762\u5f62\u6210\u7684\u53cc\u7535\u5c42\u7535\u5bb9\uff08Cdl<\/sub>\uff09\uff0c\u7b2c\u4e09\u4e2a\u5706\u4ee3\u8868\u7684\u662f\u4e24\u4e2a\u7535\u6781\u4e2d\u7684\u80fd\u65af\u7279\u6269\u6563\u963b\u6297\uff08ZN<\/sub>\uff09\u3002SeGnPs\u7684\u7535\u8377\u4f20\u8f93\u7535\u963b\u7684\u503c\u662f0.23 \u03a9\u00b7cm-2<\/sup>\u6bd4Pt\u7535\u6781\u76840.61\u5c0f\u4e86\u5f88\u591a\u3002\u56e0\u6b64\uff0c\u8fd9\u79cd\u5bf9\u7535\u6781\u7ec4\u6210\u7684\u7535\u6c60\u5c06\u88ab\u9884\u8ba1\u8868\u73b0\u51fa\u66f4\u9ad8\u7684\u77ed\u8def\u7535\u6d41\u548c\u586b\u5145\u56e0\u5b50\u3002<\/p>\n

4.\u7535\u6c60\u6027\u80fd<\/strong><\/p>\n

\"F4.large\"<\/p>\n

\u56fe4. A \u00a0Pt\u548cSeGnPs\u5bf9\u7535\u6781\u5728\u4e0d\u540c\u67d3\u6599\u7684\u7535\u6c60\u6027\u80fd\u5bf9\u6bd4\uff0cB \u5bf9\u5e94\u7535\u6c60\u7684\u7535\u8377\u4f20\u8f93\u7535\u963b\u3002<\/p>\n

\u56fe4. A\u662f\u7535\u538b-\u7535\u6d41\u66f2\u7ebf\uff0c\u4ee5Pt\u4f5c\u5bf9\u7535\u6781\uff0cCo(\u2161)\/Co(\u2162)\u4e3a\u7535\u89e3\u6db2\u7684\u67d3\u6599\u7535\u6c60\u7684\u77ed\u8def\u7535\u6d41\u5bc6\u5ea6\u662f15.3 mA\u00b7cm-2<\/sup>\uff0c\u5f00\u8def\u7535\u538b\u4e3a863mV\uff0c\u586b\u5145\u56e0\u5b50\u4e3a76.6%\uff0c\u6700\u540e\u7684\u5149\u7535\u8f6c\u5316\u6548\u7387\u662f10.11%\uff0c\u800c\u4ee5SeGnPs\u4e3a\u5bf9\u7535\u6781\u7684\u7535\u6c60\u7684\u6027\u80fd\u5206\u522b\u662f16.27 mA\u00b7cm-2<\/sup>\uff0c876mV\uff0c77.0%\u548c10.98%\u3002\u4ee5I–<\/sup>\/I3<\/sub>–<\/sup>\u4e3a\u7535\u89e3\u6db2\u65f6\uff0cPt\u5bf9\u7535\u6781\u7684\u7535\u6c60\u6027\u80fd\u53c2\u6570\u5206\u522b\u662f17.26 mA\u00b7cm-2<\/sup>\uff0c729mV\uff0c72.2%\u548c\u5149\u7535\u8f6c\u6362\u6548\u7387\u4e3a9.07%\uff0c\u4ee5SeGnPs\u4e3a\u5bf9\u7535\u6781\u7684\u7535\u6c60\u7684\u6027\u80fd\u5206\u522b\u4e3a18.16 mA\u00b7cm-2<\/sup>, 692 mV, 73.1%\u548c 9.17%\u3002\u4ece\u7ed3\u679c\u53ef\u4ee5\u770b\u51fa\u4ee5<\/strong>SeGnPs<\/strong>\u5bf9\u7535\u6781\u76f8\u6bd4\u4e8e<\/strong>Pt<\/strong>\u7535\u6781\u8868\u73b0\u51fa\u66f4\u597d\u7684\u5149\u7535\u6027\u80fd<\/strong>\u3002<\/p>\n

5.\u603b\u7ed3<\/strong><\/p>\n

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\u8be5\u5de5\u4f5c\u4e8e2016\u5e746\u6708\u53d1\u8868\u4e8eScience Advances, \u539f\u6587\u94fe\u63a5\uff1aEdge-selenated graphene nanoplatelets as durable metal-free catalysts for iodine reduction reaction in dye-sensitized solar cells<\/a><\/p>\n

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