{"id":52673,"date":"2016-11-21T06:30:53","date_gmt":"2016-11-20T22:30:53","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=52673"},"modified":"2017-03-18T21:17:28","modified_gmt":"2017-03-18T13:17:28","slug":"science%ef%bc%9a%e6%b0%a7%e8%bf%98%e5%8e%9f%e5%8f%8d%e5%ba%94-%e8%b6%85%e9%ab%98%e8%b4%a8%e9%87%8f%e6%af%94%e6%b4%bb%e6%80%a7%e7%9a%84%e8%b6%85%e7%bb%86%e9%94%af%e9%bd%bf%e7%8a%b6pt","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=52673","title":{"rendered":"Science\uff1a\u6c27\u8fd8\u539f\u53cd\u5e94\u2014\u2014\u8d85\u9ad8\u8d28\u91cf\u6bd4\u6d3b\u6027\u7684\u8d85\u7ec6\u952f\u9f7f\u72b6Pt\u7eb3\u7c73\u7ebf"},"content":{"rendered":"

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

Pt\u4ee3\u8868\u50ac\u5316\u6c27\u8fd8\u539f\u53cd\u5e94\uff08ORR\uff09\u7684\u57fa\u672c\u5143\u7d20\u3002\u7136\u800cORR\u7684\u50ac\u5316\u6548\u7387\u4f9d\u7136\u5f88\u4f4e\uff0c\u9ad8\u6210\u672c\u7684Pt\u6210\u4e3a\u63a8\u5e7f\u71c3\u6599\u7535\u6c60\u4e3b\u8981\u7684\u5236\u7ea6\u56e0\u7d20\uff0c\u56e0\u6b64\u6025\u9700\u63d0\u9ad8Pt\u7684\u8d28\u91cf\u6bd4\u6d3b\u6027\u3002Pt\u7684\u8d28\u91cf\u6bd4\u6d3b\u6027\u4e3b\u8981\u53d6\u51b3\u4e8e\u9762\u79ef\u6bd4\u6d3b\u6027\uff08SA\uff09\u548c\u8d28\u91cf\u6bd4\u5316\u5b66\u6d3b\u6027\u8868\u9762\u79ef\uff08ECSA\uff09\u3002\u901a\u8fc7\u4e0d\u65ad\u7684\u4f18\u5316\uff0cSA\u5df2\u7ecf\u8fbe\u5230\u5f88\u9ad8\u4e86\uff0c\u800cECSA\u5374\u9650\u5236\u5728~70 m2<\/sup>\/g\u3002\u901a\u8fc7\u5236\u5907\u5177\u6709Pt\u8868\u9762\u7684\u8d85\u7ec6\u7eb3\u7c73\u7ed3\u6784\u6216\u6838\u58f3\u7eb3\u7c73\u7ed3\u6784\u7b49\u65b9\u5f0f\u6539\u53d8\u51e0\u4f55\u5f62\u8c8c\uff0c\u53ef\u4ee5\u4f7f\u5f97\u66f4\u591a\u7684Pt\u539f\u5b50\u66b4\u9732\u5728\u8868\u9762\u3002<\/p>\n

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

2016\u5e7411\u670817\u65e5\uff0cScience<\/strong>\u53d1\u8868\u4e00\u7bc7\u5173\u4e8eORR\u50ac\u5316\u7684\u6587\u7ae0\uff0c\u9898\u4e3a\u201cUltrafine jagged platinum nanowires enable ultrahigh mass activity for the oxygen reduction reaction<\/strong>\u201d\u3002\u8be5\u6587\u7ae0\u7684\u901a\u8baf\u4f5c\u8005\u662f\u7f8e\u56fd\u52a0\u5229\u798f\u5c3c\u4e9a\u7406\u5de5\u5b66\u9662<\/strong>William A. Goddard III<\/strong>\u6559\u6388\u3001\u7f8e\u56fd\u52a0\u5229\u798f\u5c3c\u4e9a\u5927\u5b66<\/strong>Yu Huang<\/strong>\u6559\u6388\u548c\u6bb5\u9576\u950b\u6559\u6388<\/strong>\u3002\u7814\u7a76\u4eba\u5458\u91c7\u7528\u70ed\u9000\u706b\u5de5\u827a\u5c06\u6eb6\u6db2\u5408\u6210\u7684Pt\/NiO\u6838\u58f3\u7eb3\u7c73\u7ebf\u8f6c\u5316\u4e3aPtNi\u5408\u91d1\u7eb3\u7c73\u7ebf\uff0c\u63a5\u7740\u518d\u53bb\u5408\u91d1\u5316\u5f97\u5230\u952f\u9f7f\u72b6Pt\u7eb3\u7c73\u7ebf\uff08J-PtNWs\uff09\u3002J-PtNWs\u7684ECSA\u9ad8\u8fbe118 m2<\/sup>\/g\uff0c\u5f53\u7528\u4e8eORR\u50ac\u5316\u65f6\uff0cSA\u9ad8\u8fbe11.5 mA\/cm2<\/sup>\uff08\u57280.9 V vs\u53ef\u9006\u6c22\u7535\u6781\uff09\uff0c\u8d28\u91cf\u6bd4\u6d3b\u6027\u8fbe\u5230\u4e8613.6 A\/mg\uff0c\u7ea6\u662f\u76ee\u524d\u5df2\u62a5\u9053\u6700\u9ad8\u503c\u7684\u4e24\u500d\uff01\u7814\u7a76\u4eba\u5458\u8fd8\u8fdb\u4e00\u6b65\u901a\u8fc7\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u8bf4\u660e\uff0c\u8c03\u8282J-PtNWs\u7684\u5bcc\u68f1\u5f62\u8868\u9762\u53ef\u4ee5\u63d0\u9ad8ORR\u6d3b\u6027\u3002<\/p>\n

\u81f4\u6b49\uff1a\u5f88\u62b1\u6b49\uff0c\u901a\u8baf\u4f5c\u8005Yu Huang\u6559\u6388\u7684\u786e\u5207\u4e2d\u6587\u540d\u5b57\u672a\u80fd\u627e\u5230\uff0c\u5728\u6b64\u8868\u793a\u62b1\u6b49\uff01<\/strong><\/p>\n

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

\u56fe<\/strong>1<\/strong>\uff1a<\/strong>J-PtNW<\/strong>\u6f14\u5316\u8fc7\u7a0b\u4e2d\u4e0d\u540c\u72b6\u6001\u4e0b\u7684\u7ed3\u6784\u548c\u7ec4\u5206\u8868\u5f81<\/strong><\/p>\n

\"1\"<\/p>\n

(A-C) \u5206\u522b\u662fPt\/NiO\u6838\u58f3\u7eb3\u7c73\u7ebf\u3001PtNi\u5408\u91d1\u7eb3\u7c73\u7ebf\u3001J-PtNWs\u7684TEM\u56fe\u50cf\u3002<\/p>\n

(D-F) \u5206\u522b\u662fPt\/NiO\u6838\u58f3\u7eb3\u7c73\u7ebf\u3001PtNi\u5408\u91d1\u7eb3\u7c73\u7ebf\u3001J-PtNWs\u7684HRTEM\u56fe\u50cf\u3002\u56feF\u4e2d\u7684\u63d2\u56fe\u5c55\u793a\u5bf9\u5e94\u7684FFT\u56fe\u50cf\u3002\u56feE\u548c\u56feF\u7684\u865a\u7ebf\u6807\u793a\u51fa\u7eb3\u7c73\u7ebf\u7684\u8f6e\u5ed3\uff0c\u51f8\u663e\u51faJ-PtNWs\u7c97\u7cd9\u7684\u8868\u9762\u3002<\/p>\n

(G-I) \u5bf9\u5e94\u7eb3\u7c73\u7ebf\u7684EDS\u7ebf\u626b\u63cf\u66f2\u7ebf\uff0c\u6e05\u6670\u5730\u5c55\u793a\u51faPt\/NiO\u6838\u58f3\u7eb3\u7c73\u7ebf\u8f6c\u53d8\u4e3aPtNi\u5408\u91d1\u7eb3\u7c73\u7ebf\uff0c\u518d\u8f6c\u53d8\u4e3aJ-PtNWs\u7684\u6f14\u53d8\u8fc7\u7a0b\u3002<\/p>\n

\u56fe<\/strong>2<\/strong>\uff1a<\/strong>J-PtNWs<\/strong>\u7684\u7535\u5316\u5b66\u6027\u80fd\uff0c\u5e76\u4e0e\u5e38\u89c4\u65b9\u6cd5\u5408\u6210\u7684<\/strong>PtNWs (R-PtNWs)<\/strong>\u3001\u5546\u4e1a\u5316<\/strong>Pt\/C<\/strong>\u8fdb\u884c\u5bf9\u6bd4<\/strong><\/p>\n

\"2\"<\/p>\n

(A) \u53bb\u5408\u91d1\u5316\u8fc7\u7a0b\u4e2d\u4e0d\u540c\u6d3b\u5316\u6b21\u6570\u7684CV\u66f2\u7ebf\u3002\u53ef\u4ee5\u770b\u51fa\uff0cCV\u5faa\u73af\u6b21\u6570\u8d8a\u591a\uff0c\u6bd4\u8868\u9762\u79ef\u8d8a\u5927\u3002<\/p>\n

(B) \u968f\u7740CV\u5faa\u73af\u6b21\u6570\u589e\u591aECSA\u7684\u53d8\u5316\u3002\u8fd9\u8868\u660e150\u6b21CV\u5faa\u73af\u8db3\u4ee5\u5145\u5206\u6784\u5efaJ-PtNWs\u5e76\u8fbe\u5230\u7a33\u5b9a\u7684ECSA\u3002<\/p>\n

(C-D) \u5206\u522b\u662fJ-PtNWs\u3001R-PtNWs\u3001Pt\/C\u7684CV\u548cORR\u6781\u5316\u66f2\u7ebf\u3002<\/p>\n

(E-F) \u5206\u522b\u662fJ-PtNWs\u3001R-PtNWs\u3001Pt\/C\u7684SA\u548c\u8d28\u91cf\u6bd4\u6d3b\u6027Tafel\u66f2\u7ebf\u3002\u7d2b\u8272\u865a\u7ebf\u662f\u7f8e\u56fd\u80fd\u6e90\u90e8\uff08DOE\uff09\u5236\u5b9a\u76842017\u5e74\u8d28\u91cf\u6bd4\u6d3b\u6027\uff08\u57280.9 V vs\u53ef\u9006\u6c22\u7535\u6781\uff09\u7684\u76ee\u6807\u3002<\/p>\n

(G) \u5bf9\u6bd4J-PtNWs\u3001R-PtNWs\u3001Pt\/C\u7684SA\u548c\u8d28\u91cf\u6bd4\u6d3b\u6027\uff08\u57280.9 V vs\u53ef\u9006\u6c22\u7535\u6781\uff09\u3002\u76f8\u6bd4Pt\/C\uff0cJ-PtNWs\u5c55\u793a\u51fa33\u500d\u7684SA\u548c52\u500d\u7684\u8d28\u91cf\u6bd4\u6d3b\u6027\u3002<\/p>\n

(H) \u5728\u626b\u901f\u4e3a100 mV\/s\uff0c\u7535\u4f4d\u7a97\u53e3\u4e3a0.6-1.0 V\uff08vs\u53ef\u9006\u6c22\u7535\u6781\uff09\u7684\u52a0\u901f\u8010\u4e45\u6027\u6d4b\u8bd5\uff08ADT\uff09\u4e2d\uff0cJ-PtNWs\u57286000\u6b21\u5faa\u73af\u524d\u540e\u7684ORR\u6781\u5316\u66f2\u7ebf\u548c\u8d28\u91cf\u6bd4\u6d3b\u6027Tafel\u66f2\u7ebf\u3002\u53ef\u4ee5\u770b\u51fa\u6d3b\u6027\u8870\u51cf\u5f88\u5c0f\u3002<\/p>\n

(I) \u7ecf\u8fc7ADT\u6d4b\u8bd5\u540eJ-PtNWs\u7684\u9ad8\u5206\u8fa8\u7387HAADF-STEM\u56fe\u50cf\u3002\u5706\u5708\u5c55\u793a\u51fa\u7f3a\u9677\u533a\u57df\u7684\u7f3a\u5931\u539f\u5b50\u3002\u63d2\u56fe\u663e\u793a\u5bf9\u5e94\u7684FFT\u56fe\u50cf\u3002<\/p>\n

\u56fe<\/strong>3<\/strong>\uff1a\u4ece<\/strong>ReaxFF<\/strong>\u53cd\u5e94\u5206\u5b50\u52a8\u529b\u5b66\u548c<\/strong>X<\/strong>\u5c04\u7ebf\u5438\u6536\u5149\u8c31\u5f97\u5230\u7684<\/strong>J-PtNWs<\/strong>\u7684\u7ed3\u6784\u5206\u6790<\/strong><\/p>\n

\"3\"<\/p>\n

(A) \u7ed8\u56fe\u9610\u91ca\u53cd\u5e94\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u7684Pt J-NW\u6700\u7ec8\u7ed3\u6784\uff0c\u5176\u5e73\u5747\u76f4\u5f84\u4e3a~2.2 nm\uff0c\u5e73\u5747\u957f\u5ea6\u4e3a~46 nm\u3002<\/p>\n

(B) \u80fd\u663e\u793a\u4e94\u4e58\u6307\u6570\u7684\u5e26\u6709\u4e0d\u540c\u989c\u8272\u539f\u5b50\u7684J-PtNW\u3002<\/p>\n

(C) \u80fd\u663e\u793a\u539f\u5b50\u5e94\u529b\u5206\u5e03\uff08atm\u00b7nm3<\/sup>\uff09\u7684\u5e26\u6709\u4e0d\u540c\u989c\u8272\u539f\u5b50\u7684J-PtNW\u3002<\/p>\n

(D) \u4e8c\u9636\u77e9\u9884\u6d4bJ-PtNW\u7684Pt-Pt\u5f84\u5411\u5206\u5e03\u51fd\u6570\uff08RDF\uff09\uff0c\u5e76\u5bf9\u6bd4R-PtNW\u7684RDF\u5cf0\u3002<\/p>\n

(E) J-PtNWs\u7684Pt L3<\/sub>\u8fb9\u7f18FT-EXAFS\u5149\u8c31\u548c\u5bf9\u5e94\u7684\u7b2c\u4e00\u58f3\u5c42\u6700\u5c0f\u4e8c\u4e58\u6cd5\u62df\u5408\u3002<\/p>\n

(F) \u5728R-PtNWs\u548cJ-PtNWs\u8868\u9762\u83f1\u5f62\u7684\u5e73\u5747\u539f\u5b50\u5e94\u529b\u7edd\u5bf9\u503c\u5206\u5e03\u3002\u63d2\u56fe\u8bf4\u660e\u4e24\u4e2a\u7b49\u8fb9\u4e09\u89d2\u5f62\u5171\u4eab\u540c\u4e00\u8fb9\u6392\u5217\u76844\u539f\u5b50\u6784\u6210\u4e00\u4e2a\u68f1\u5f62\u3002<\/p>\n

\u8868<\/strong>1<\/strong>\uff1a<\/strong>J-PtNWs\/C<\/strong>\u3001<\/strong>R-PtNWs\/C<\/strong>\u3001<\/strong>Pt\/C<\/strong>\u50ac\u5316\u5242\u7684\u7535\u5316\u5b66\u6d3b\u6027\u8868\u9762\u79ef\u3001\u6bd4\u6d3b\u6027\u3001\u534a\u6ce2\u7535\u4f4d\u3001\u8d28\u91cf\u6bd4\u6d3b\u6027\uff0c\u5e76\u5bf9\u6bd4\u51e0\u4e2a\u6700\u8fd1\u7684\u6709\u4ee3\u8868\u6027\u7684\u7814\u7a76<\/strong><\/p>\n

\"4\"<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u8fd9\u9879\u5de5\u4f5c\u901a\u8fc7\u8bbe\u8ba1\u8d85\u7ec6\u952f\u9f7f\u72b6\u7eb3\u7c73\u7ebf\u5f62\u8c8c\uff0c\u4f7f\u5f97\u66f4\u591a\u7684Pt\u539f\u5b50\u66b4\u9732\u5728\u8868\u9762\uff0c\u5927\u5927\u63d0\u9ad8\u4e86ECSA\u4ee5\u53ca\u8d28\u91cf\u6bd4\u6d3b\u6027\u3002\u540c\u65f6\u8fd8\u901a\u8fc7\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u7814\u7a76\u5185\u5728\u673a\u7406\u3002\u5176\u72ec\u4e00\u65e0\u4e8c\u7684\u6027\u80fd\u65e0\u7591\u4e3a\u71c3\u6599\u7535\u6c60\u7684\u63a8\u5e7f\u5e26\u6765\u65b0\u7684\u5e0c\u671b\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Ultrafine jagged platinum nanowires enable ultrahigh mass activity for the oxygen reduction reaction<\/a> (science, 2016, DOI: 10.1126\/science.aaf9050)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u65b0\u80fd\u6e90\u5b66\u672f\u7ec4 \u849c\u5934 \u4f9b\u7a3f\uff0c\u70b9\u8fd9\u91cc\u52a0\u5165\u6750\u6599\u4eba\u7684\u5927\u5bb6\u5ead<\/a>\u3002\u53c2\u4e0e\u65b0\u80fd\u6e90\u8bdd\u9898\u8ba8\u8bba\u8bf7\u52a0\u5165\u201c\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u6750\u6599\u4ea4\u6d41\u7fa4 422065952\u201d,\u6b22\u8fce\u5173\u6ce8\u5fae\u4fe1\u516c\u4f17\u53f7\uff0c\u5fae\u4fe1\u641c\u7d22\u201c\u65b0\u80fd\u6e90\u524d\u7ebf\u201d\u6216\u626b\u7801\u5173\u6ce8\u3002<\/p>\n

\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a\u6d4b\u8bd5\u8c37<\/a>\uff01<\/strong><\/p>\n

\"\u65b0\u80fd\u6e90\u524d\u7ebf-\u9ad8\u6e05\"<\/p>\n","protected":false},"excerpt":{"rendered":"

\u3010\u5f15\u8a00\u3011 Pt\u4ee3\u8868\u50ac\u5316\u6c27\u8fd8\u539f\u53cd\u5e94\uff08ORR\uff09\u7684\u57fa\u672c\u5143\u7d20\u3002\u7136\u800cORR\u7684\u50ac\u5316\u6548\u7387\u4f9d\u7136\u5f88\u4f4e\uff0c\u9ad8\u6210\u672c\u7684Pt\u6210\u4e3a\u63a8\u5e7f\u71c3\u6599\u7535\u6c60\u4e3b\u8981\u7684\u5236\u7ea6\u56e0\u7d20\uff0c\u56e0\u6b64\u6025\u9700\u63d0\u9ad8Pt\u7684\u8d28\u91cf\u6bd4\u6d3b\u6027\u3002P…<\/p>\n","protected":false},"author":1206,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215],"tags":[155,116,18,1392],"class_list":["post-52673","post","type-post","status-publish","format-standard","hentry","category-jiedu","tag-science","tag-catalyst","tag-xinnengyuan","tag-duanxiangfeng"],"_links":{"self":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/52673"}],"collection":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/users\/1206"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=52673"}],"version-history":[{"count":12,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/52673\/revisions"}],"predecessor-version":[{"id":52864,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/52673\/revisions\/52864"}],"wp:attachment":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=52673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=52673"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=52673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}