{"id":61320,"date":"2017-01-18T06:30:40","date_gmt":"2017-01-17T22:30:40","guid":{"rendered":"\/\/m.iemloyee.com\/?p=61320"},"modified":"2017-03-04T10:30:54","modified_gmt":"2017-03-04T02:30:54","slug":"%e5%b4%94%e5%b1%b9%e6%9d%8e%e5%b7%a8ees%ef%bc%9a%e8%87%aa%e6%84%88%e5%90%88sei%e8%86%9c%e5%8a%a9%e7%a1%85%e8%b4%9f%e6%9e%81%e5%85%a8%e7%94%b5%e6%b1%a0%e5%be%aa%e7%8e%af%e5%ba%93%e4%bb%91%e6%95%88","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=61320","title":{"rendered":"\u5d14\u5c79&\u674e\u5de8EES\uff1a\u81ea\u6108\u5408SEI\u819c\u52a9\u7845\u8d1f\u6781\u5168\u7535\u6c60\u5faa\u73af\u5e93\u4ed1\u6548\u7387\u8d85\u8fc799.9%"},"content":{"rendered":"

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\u3010\u6210\u679c\u7b80\u4ecb\u3011 \u00a0 <\/strong><\/span>\u00a0\u00a0<\/strong><\/span><\/p>\n

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

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<\/p>\n

\u56fe\u4e8c\uff1a \u86cb\u9ec4\u58f3\u578bSi @ TiO2<\/sub>\u56e2\u7c07\u7535\u6781\u7684\u5236\u5907\u548c\u8868\u5f81<\/span><\/strong><\/p>\n

<\/p>\n

\uff08a\uff09\u86cb\u9ec4\u58f3Si2 <\/sub>@TiO2<\/sub>\u7c07\u7684\u5408\u6210\u793a\u610f\u56fe\u3002<\/p>\n

\uff08b\uff09Ti\uff0cO\u548cSi\u7684STEM\u56fe\u50cf\u548c\u5143\u7d20\u6620\u5c04\uff0c\u8bc1\u5b9e\u4e86\u86cb\u9ec4\u58f3\u7ed3\u6784\u3002<\/p>\n

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\uff08d\uff09\u949b\u79bb\u5b50\u5438\u9644\u540e\u7684Si @ C @ TiO2<\/sub>\u7684SEM\u56fe\u50cf\u3002<\/p>\n

\uff08e\u548cf\uff09\u5728550\u2103\u4e0b\u5728\u7a7a\u6c14\u4e2d\u52a0\u70ed2\u5c0f\u65f6\u540e\u7684\u86cb\u9ec4\u58f3Si2 <\/sub>@TiO2<\/sub>\u7c07\u7684SEM\u548cTEM\u56fe\u50cf\u3002 TEM\u56fe\u50cf\u663e\u793a\u51e0\u4e2aSi\u7eb3\u7c73\u9897\u7c92\u88ab\u5c01\u88c5\u5728\u8fde\u7eed\u8584\u7684TiO2<\/sub>\u58f3\u4e2d\u3002<\/p>\n

\uff08g\uff09TiO2<\/sub>\u58f3\u7684\u9ad8\u5206\u8fa8\u7387TEM\u56fe\u50cf\u3002<\/p>\n

\u56fe\u4e09\uff1a\u4e2d\u7a7aTiO 2<\/sub>\u58f3\u548c\u4e2d\u7a7aaC\u58f3\u7684\u539f\u4f4dTEM\u538b\u75d5<\/span><\/strong><\/p>\n

<\/p>\n

\uff08a\uff09\u793a\u610f\u56fe\u3002 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \uff08b\uff09\u539f\u4f4dTEM\u538b\u5934\u7684\u5149\u5b66\u56fe\u50cf\u3002<\/p>\n

\uff08c\u548cd\uff09\u4e2d\u7a7aTiO 2<\/sub>\u58f3\u548c\u4e2d\u7a7aaC\u58f3\u5728\u65bd\u52a0\u529b\u4e0b\u7684\u52a8\u6001\u53d8\u5f62\u3002\u4e2d\u7a7aTiO 2<\/sub>\u58f3\u7684\u76f4\u5f84\u4e3a230nm\uff0c\u539a\u5ea6\u4e3a16nm\u3002\u4e2d\u7a7aaC\u58f3\u7684\u76f4\u5f84\u4e3a258nm\uff0c\u539a\u5ea6\u4e3a15nm\u3002<\/p>\n

\uff08e\uff09\u4e2d\u7a7aTiO 2<\/sub>\u58f3\u548c\u4e2d\u7a7aaC\u58f3\u7684\u529b\u4e0e\u538b\u7f29\u5e94\u53d8\uff08\u0394d\/ d\uff09\u3002<\/p>\n

\u56fe\u56db\uff1a\u7535\u6781\u548cSi @ TiO 2<\/sub>\u7eb3\u7c73\u56e2\u7c07\u538b\u5236\u5b9e\u9a8c<\/span><\/strong><\/p>\n

<\/p>\n

\uff08a\uff09\u5b8f\u89c2\u7535\u6781\u538b\u5236\u7684\u793a\u610f\u56fe\u3002\uff08b\u548cc\uff09\u539f\u59cb\u548c\u572820MPa\u538b\u5236\u540e\u7684Si @ TiO 2<\/sub>\u7c07\u548cSi @ aC\u7535\u6781\u7684SEM\u56fe\u50cf\u3002<\/p>\n

\uff08d\uff09\u86cb\u9ec4\u58f3Si @ TiO 2\u7eb3\u7c73\u56e2\u7c07\u7684\u539f\u4f4dTEM\u538b\u5236\u5b9e\u9a8c\u3002 \u5de6\uff0c\u4e2d\u548c\u53f3\u56fe\u50cf\u5206\u522b\u5bf9\u5e94\u4e8e\u521d\u59cb\uff0c\u538b\u7f29\u548c\u8d1f\u8f7d\u91ca\u653e\u72b6\u6001\u3002 \u4e3a\u4e86\u83b7\u5f97\u5e94\u529b\uff0c\u901a\u8fc7AFM\u60ac\u81c2\u5c16\u7aef\u7684\u4f4d\u79fb\u8ba1\u7b97\u8d1f\u8f7d\uff0c\u5e76\u4e14\u63a5\u89e6\u9762\u79ef\u8fd1\u4f3c\u4e3a\u7403\u5f62\u3002<\/p>\n

\u56fe\u4e94\uff1a Si @ TiO 2<\/sub>\u538b\u5236\u7535\u6781\u7684\u7535\u5316\u5b66\u8868\u5f81<\/span><\/strong><\/p>\n

<\/p>\n

\u6240\u6709\u6bd4\u5bb9\u91cf\u57fa\u4e8eSi + TiO 2<\/sub>\u7684\u603b\u8d28\u91cf\u3002<\/p>\n

\uff08a\uff09\u8d85\u8fc71500\u5708\u5faa\u73af\u7684\u5faa\u73af\u5bff\u547d\u548c\u76f8\u5e94\u7684\u5e93\u4ed1\u6548\u7387\u3002\u5bf9\u4e8e\u7b2c\u4e00\u5faa\u73af\u7684\u5145\u7535\/\u653e\u7535\u500d\u7387\u4e3aC \/ 20\uff0c\u7136\u540e\u5bf9\u4e8e\u63a5\u4e0b\u6765\u76845\u4e2a\u5faa\u73af\u4e3aC \/ 10\uff0c\u5bf9\u4e8e\u968f\u540e\u7684\u5faa\u73af\u4e3aC \/ 2\uff081C\u226142A g-1<\/sup>Si\uff09\u3002\u6240\u6709\u6d3b\u6027\u6750\u6599\u7684\u8d28\u91cf\u8d1f\u8377\u4e3a\u7ea60.8mg cm -2<\/sup>\u3002<\/p>\n

\uff08b\uff09\u4e0e\u9502\u94b4\u6c27\u5316\u7269\u6b63\u6781\u914d\u5bf9\u7684Si @ TiO 2<\/sub>\u7c07\u8d1f\u6781\uff082.1mg cm -2<\/sup>\uff09\u7684\u5168\u7535\u6c60\u6027\u80fd\u3002<\/p>\n

\uff08c\uff09\u5728100\u5708\u5faa\u73af\uff08\u5168\u7535\u6c60\uff09\u4e4b\u540e\u7684Si @ TiO 2<\/sub>\u7834\u788e\u7684\u7535\u6781\uff0830MPa\uff09\u7684SEM\u56fe\u50cf;\u5de6\u8fb9\u662f\u5e26\u6709SEI\u819c\u7684\u7535\u6781\uff0c\u53f3\u8fb9\u662f\u79bb\u5b50\u675f\u8680\u523b\u540e\u3002<\/p>\n

\uff08d\uff0950\u5708\u5faa\u73af\u540e\u7684Si @ aC\u7834\u788e\u7684\u7535\u6781\uff0830MPa\uff09\u7684SEM\u56fe\u50cf\u3002<\/p>\n

\uff08e\uff09\u5728\u653e\u7535\u548c\u5145\u75351500\u6b21\u5faa\u73af\u540e\uff0c\u901a\u8fc7X\u5c04\u7ebf\u5149\u7535\u5b50\u80fd\u8c31\uff08XPS\uff09\u5bf93\u4e2a\u79bb\u5b50\u6e85\u5c04\u65f6\u95f4\u6d4b\u91cf\u7684Si @ TiO 2<\/sub>\u7c07\u7535\u6781\u7684\u76f8\u5bf9\u5cf0\u5f3a\u5ea6\uff08Si\uff0cTi\uff0cF\u548cLi\uff09\uff1b\u65f6\u95f40\u8868\u793a\u6e85\u5c04\u524d\u3002<\/p>\n

\uff08f\uff09\u7535\u6781\u539a\u5ea6\u53d8\u5316\u3002 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\uff08g\uff09Si @ TiO 2<\/sub>\u4e0e\u5546\u4e1a\u77f3\u58a8\u7684\u4f53\u79ef\u6bd4\u5bb9\u91cf\u3002<\/p>\n

\u56fe\u516d\uff1aSi @ TiO 2<\/sub>\u56e2\u7c07\u7535\u6781\u7684\u5e93\u4f26\u5931\u6548\u5206\u6790<\/span><\/strong><\/p>\n

<\/p>\n

\u5e93\u4ed1\u6548\u7387\uff08CI = 1-CE\uff09\u88ab\u5b9a\u4e49\u4e3a\u53cd\u6620\u6bcf\u4e2a\u5faa\u73af\u4e2d\u7684\u9502\u79bb\u5b50\u635f\u5931\u3002<\/p>\n

\uff08a\uff09Si @ TiO 2<\/sub>\u7c07\uff08\u534a\u7535\u6c60\uff09\u7684\u8d85\u8fc71500\u4e2a\u5faa\u73af| CI |\uff08\u5782\u76f4\u8f74\u4ee5\u5bf9\u6570\u6807\u5ea6\uff09\u3002 \u7ea2\u8272\u5706\u5708\u8868\u793aCI> 0\uff0c\u7eff\u8272\u5706\u5708\u8868\u793aCI <0\u3002\u54c1\u7ea2\u8272\u5706\u5708\u8868\u793aSi @ aC\uff08\u534a\u7535\u6c60\uff09\u7684| CI|\u3002\u84dd\u7ebf\u4ee3\u8868CI = 0.005\u3002<\/p>\n

\uff08b\uff09\u534a\u7535\u6c60\u5728100\u5708\u5faa\u73af\uff08\u7ebf\u6027\u5750\u6807\uff09\u7684CI\u3002<\/p>\n

\uff08c\uff09\u5728100\u5708\u5faa\u73af\uff08\u7ebf\u6027\u5750\u6807\uff09\u7684Si @ TiO 2<\/sub>\u7c07\u7535\u6781\uff08\u5168\u7535\u6c60\uff09\u7684CI\u3002<\/p>\n

\uff08d\uff09\u5728100\u4e2a\u5faa\u73af\u4e2dSi @ TiO2<\/sub>\u56e2\u7c07\u7535\u6781\uff08\u534a\u7535\u6c60\u548c\u5168\u7535\u6c60\uff09\u7684\u603b\u9502\u79bb\u5b50\u635f\u5931\u548c\u5bb9\u91cf\u635f\u5931\u767e\u5206\u6bd4\u3002<\/p>\n

\u3010\u603b\u7ed3\u3011<\/strong><\/span><\/p>\n

\u9ad8\u5ea6\u538b\u7f29\u7684\u86cb\u9ec4\u58f3Si @ TiO 2<\/sub>\u7ec4\u7ec7\uff0c\u5c3d\u7ba1\u5728\u5f00\u59cb\u9636\u6bb5\u51fa\u73b0\u4e0d\u53ef\u907f\u514d\u7684\u7f3a\u9677\uff0c\u4f46\u5176\u5177\u6709\u5f39\u6027\uff0c\u5e76\u4e14\u53ef\u4ee5\u4ee5\u4f4e\u6210\u672c\u5b9e\u73b0\u7279\u5b9a\u5bb9\u91cf\u7684\u6c34\u5e73\u548c\u7a33\u5b9a\u7684\u5e93\u4ed1\u6548\u7387\uff0c\u7a33\u5b9a\u7684\u5e93\u4ed1\u6548\u7387\u8d85\u8fc799.9\uff05\uff0c\u4f7f\u5f97SiMA\u5168\u7535\u6c60\u7684\u5b9e\u73b0\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aSelf-healing SEI enables full-cell cycling of a silicon-majority anode with a coulombic efficiency exceeding 99.9%<\/a><\/strong>\uff08\u00a0Energy Environ. Sci.<\/em>, 2017, DOI:\u00a010.1039\/C6EE02685K\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u7ec4 \u80cc\u9006\u65f6\u5149 \u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406\u3002<\/p>\n

\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<\/p>\n

\u4eea\u5668\u8bbe\u5907\u3001\u8bd5\u5242\u8017\u6750\u3001\u6750\u6599\u6d4b\u8bd5\u3001\u6570\u636e\u5206\u6790\uff0c\u627e\u6750\u6599\u4eba<\/a>\u3001\u4e0a\u6d4b\u8bd5\u8c37<\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

\u3010\u5f15\u8a00\u3011 \u7845\u662f\u6709\u671b\u66ff\u4ee3\u9502\u79bb\u5b50\u7535\u6c60\u7684\u77f3\u58a8\u8d1f\u6781\u7684\u6750\u6599\uff0c\u56e0\u4e3a\u5176\u5730\u7403\u542b\u91cf\u4e30\u5bcc\uff0c\u73af\u5883\u53cb\u597d\uff0c\u4f4e\u653e\u7535\u7535\u538b\u548c\u9ad8\u7406\u8bba\u5bb9\u91cf\uff08\u4f8b\u5982Li4.4Si\uff0c\u5bb9\u91cf\u5219\u4e3a4200A h kg-1\uff09\u3002…<\/p>\n","protected":false},"author":272,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215],"tags":[853],"class_list":["post-61320","post","type-post","status-publish","format-standard","hentry","category-jiedu","tag-cuiyi"],"_links":{"self":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/61320"}],"collection":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/users\/272"}],"replies":[{"embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=61320"}],"version-history":[{"count":10,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/61320\/revisions"}],"predecessor-version":[{"id":61667,"href":"\/\/m.iemloyee.com\/index.php?rest_route=\/wp\/v2\/posts\/61320\/revisions\/61667"}],"wp:attachment":[{"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=61320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=61320"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.iemloyee.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=61320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}