{"id":57199,"date":"2016-12-22T06:30:23","date_gmt":"2016-12-21T22:30:23","guid":{"rendered":"\/\/m.iemloyee.com\/?p=57199"},"modified":"2016-12-21T23:06:31","modified_gmt":"2016-12-21T15:06:31","slug":"jacs-k2bi8se13%e4%b8%ad%e7%9a%84%e5%a4%9a%e9%87%8d%e5%af%bc%e5%b8%a6%e7%bb%93%e5%90%88%ef%bc%9a%e4%b8%80%e7%a7%8d%e5%85%b7%e6%9c%89%e6%9e%81%e4%bd%8e%e7%83%ad%e5%af%bc%e7%8e%87%e7%9a%84%e7%83%ad","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=57199","title":{"rendered":"JACS: K2Bi8Se13\u4e2d\u7684\u591a\u91cd\u5bfc\u5e26\u7ed3\u5408\uff1a\u4e00\u79cd\u5177\u6709\u6781\u4f4e\u70ed\u5bfc\u7387\u7684\u70ed\u7535\u6750\u6599"},"content":{"rendered":"

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

\u9ad8\u6548\u7684\u70ed\u7535\u6750\u6599\u56e0\u4e3a\u53ef\u4ee5\u76f4\u63a5\u5c06\u70ed\u80fd\u548c\u7535\u80fd\u8fdb\u884c\u8f6c\u6362\uff0c\u56e0\u6b64\u5f97\u5230\u4e86\u6781\u5927\u5173\u6ce8\u3002\u5173\u7cfb\u70ed\u7535\u6750\u6599\u6027\u80fd\u7684\u4e09\u4e2a\u53c2\u6570\u5c31\u662f\u6240\u8c13\u7684\u201c\u65e0\u91cf\u7eb2\u54c1\u8d28\u56e0\u6570\u201d\uff0c\u5373ZT\u3002\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u9ad8\u6027\u80fd\u7684\u70ed\u7535\u6750\u6599\u5e94\u8be5\u540c\u65f6\u5177\u6709\u9ad8\u7684\u7535\u5bfc\u7387\u548c\u585e\u8d1d\u514b\u7cfb\u6570\uff08Seebeck coefficient\uff09\u4ee5\u53ca\u6700\u5c0f\u7684\u603b\u70ed\u5bfc\u7387\u3002\u7136\u800c\uff0c\u7531\u4e8e\u585e\u8d1d\u514b\u7cfb\u6570S\u3001\u7535\u5bfc\u7387\u03c3\u548c\u603b\u70ed\u5bfc\u7387\u03ba\u4e4b\u95f4\u7684\u590d\u6742\u5173\u7cfb\uff0c\u56e0\u6b64\uff0c\u8981\u5f97\u5230\u5177\u6709\u6781\u9ad8ZT\u7684\u70ed\u7535\u6750\u6599\u662f\u6781\u5177\u6311\u6218\u7684\u3002\u76ee\u524d\uff0c\u589e\u52a0ZT\u4e3b\u8981\u662f\u901a\u8fc7\u80fd\u5e26\u7ed3\u6784\u7684\u526a\u88c1\u3001\u51cf\u5c0f\u70ed\u5bfc\u7387\u63d0\u9ad8\u529f\u7387\u56e0\u6570\u5b9e\u73b0\u7684\u3002\u6b64\u5916\uff0c\u4f5c\u4e3a\u552f\u4e00\u7684\u72ec\u7acb\u53c2\u6570\uff0c\u51cf\u5c0f\u6676\u683c\u70ed\u5bfc\u7387\uff08\u03balat<\/sub>\uff09\u4e5f\u662f\u63d0\u9ad8ZT\u7684\u6709\u6548\u65b9\u6cd5\u3002\u5305\u62ec\u539f\u5b50\u3001\u7eb3\u7c73\u548c\u4ecb\u89c2\u5c3a\u5ea6\u7684\u590d\u6742\u8c03\u63a7\u65b9\u6cd5\u90fd\u5e94\u7528\u5230\u4e86\u51cf\u5c0f\u6676\u683c\u70ed\u5bfc\u7387\uff08\u03balat<\/sub>\uff09\u4e2d\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u67d0\u4e9b\u5355\u76f8\u7684\u5316\u5408\u7269\u4e5f\u5177\u6709\u4f4e\u7684\u70ed\u5bfc\u7387\u3002SnSe\u7531\u4e8e\u5177\u6709\u591a\u91cd\u7684\u4ef7\u5e26\u7ed3\u6784\u548c\u6781\u4f4e\u7684\u6676\u683c\u70ed\u5bfc\u7387\u800c\u5177\u6709\u6781\u9ad8\u7684\u529f\u7387\u56e0\u6570\u3002\u5148\u524d\u5bf9\u4e8eK2<\/sub>Bi8<\/sub>Se13<\/sub>\u7684\u7814\u7a76\u4e5f\u6307\u51fa\u4e86\u5176\u590d\u6742\u7684\u6676\u4f53\u7ed3\u6784\u548c\u4f4e\u7684\u70ed\u5bfc\u7387\u3002\u7136\u800c\uff0c\u76ee\u524d\u5e76\u672a\u6709\u5173\u4e8eK2<\/sub>Bi8<\/sub>Se13<\/sub>\u4f53\u7cfb\u4e2d\u63ba\u6742\u548c\u9ad8\u6e29\u4e0b\u6027\u80fd\u7684\u62a5\u9053\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u6765\u81ea\u5317\u4eac\u822a\u7a7a\u822a\u5929\u5927\u5b66\u7684\u8d75\u7acb\u4e1c\u6559\u6388\u548c\u7f8e\u56fd\u897f\u5317\u5927\u5b66\u7684\u8c2d\u521a\u5065<\/strong>\u535a\u58eb\uff08\u5171\u540c\u901a\u8baf\uff09<\/strong>\u62a5\u9053\u4e86\u5177\u6709\u6781\u9ad8\u70ed\u7535\u54c1\u8d28\u56e0\u6570\u7684K2<\/sub>Bi8<\/sub>Se13<\/sub>\uff0c\u5e76\u7814\u7a76\u4e86\u5176\u673a\u7406\u3002\u8be5\u6210\u679c\u4ee5\u201cMultiple Converged Conduction Bands in K2<\/sub>Bi8<\/sub>Se13<\/sub>: A Promising Thermoelectric Material with Extremely Low Thermal Conductivity<\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728\u4e862016\u5e7411\u670828\u65e5\u7684Journal of the American Chemical Society<\/strong>\u4e0a\u3002<\/p>\n

\u5b9e\u9a8c\u8868\u660e\uff0cK2<\/sub>Bi8<\/sub>Se13<\/sub>\u8868\u73b0\u51fa\u4e86\u76f8\u8ddd\u5f88\u8fd1\u7684\u591a\u91cd\u5bfc\u5e26\uff0c\u901a\u8fc7\u63ba\u6742\u53ef\u4ee5\u5bf9\u5176\u8fdb\u884c\u6d3b\u5316\uff0c\u8fd9\u5bfc\u81f4\u4e86\u5728\u5347\u6e29\u7684\u8fc7\u7a0b\u4e2dK2<\/sub>Bi8<\/sub>Se13<\/sub>\u5177\u6709\u6781\u9ad8\u7684\u585e\u8d1d\u514b\u7cfb\u6570\u548c\u529f\u7387\u56e0\u6570\u3002\u7531\u4e8e\u6676\u80de\u5355\u5143\u5927\u3001\u590d\u6742\u7684\u4f4e\u5bf9\u79f0\u6676\u4f53\u7ed3\u6784\u548c\u975e\u6307\u5411\u6027\u7684\u952e\u5408\u4f7f\u5f97\u5176\u5728300-873K\u7684\u6e29\u5ea6\u533a\u95f4\u5185\u8868\u73b0\u51fa\u4e860.42\u548c0.20W m-1<\/sup> K-1<\/sup>\u7684\u6781\u4f4e\u6676\u683c\u70ed\u5bfc\u7387\u3002\u6b64\u5916\uff0c\u58f0\u5b50\u901f\u7387\u6d4b\u8bd5\u7ed3\u679c\u8868\u660e\u5176\u5728\u5e73\u5747\u58f0\u5b50\u901f\u7387\uff081605ms-1<\/sup>\uff09\u3001\u6768\u6c0f\u6a21\u91cf\uff0837.1GPa\uff09\u3001Gru\u0308neisen\u53c2\u6570\uff081.71\uff09\u548c\u5fb7\u62dc\u6e29\u5ea6\uff08154K\uff09\u7b49\u53c2\u6570\u4e0a\u90fd\u8868\u73b0\u7a81\u51fa\u3002\u5229\u7528\u900f\u5c04\u7535\u955c\u548c\u7535\u5b50\u884d\u5c04\u5bf9\u6837\u54c1\u5fae\u7ed3\u6784\u548c\u7f3a\u9677\u7684\u5206\u6790\u8868\u660e\u6b21\u751f\u76f8K2.5<\/sub>Bi8.5<\/sub>Se14<\/sub>\u662f\u6cbf\u7740K2<\/sub>Bi8<\/sub>Se13<\/sub>\u5171\u751f\u5b58\u5728\u7684\u3002\u5927\u7684\u529f\u7387\u56e0\u6570\u548c\u4f4e\u7684\u70ed\u5bfc\u7387\u5bfc\u81f4\u4e86\u7535\u5b50\u63ba\u6742\u7684K2<\/sub>Bi8<\/sub>Se13<\/sub>\u5728873K\u65f6\u5177\u6709\u7ea61.3\u7684\u54c1\u8d28\u56e0\u6570ZT\u3002<\/p>\n

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

\u56fe<\/strong>1<\/strong> K2<\/sub>Bi8<\/sub>Se13<\/sub><\/strong>\u7684\u6676\u4f53\u7ed3\u6784<\/strong><\/p>\n

\"\"<\/p>\n

\u56fe<\/strong>2\u00a0<\/strong>\u63ba\u6742\u4e0d\u540c\u91cf<\/strong>BiCl3<\/sub> <\/strong>\u7684<\/strong>K2<\/sub>Bi8<\/sub>Se13<\/sub><\/strong>\u7684<\/strong>XRD<\/strong>\u5206\u6790<\/strong><\/p>\n

\"\"<\/p>\n

\uff08<\/strong>a<\/strong>\uff09<\/strong>\u63ba\u6742\u4e0d\u540c\u91cfBiCl3<\/sub> \u7684K2<\/sub>Bi8<\/sub>Se13<\/sub>\u7684XRD\u56fe<\/p>\n

\uff08<\/strong>b<\/strong>\uff09<\/strong>\u901a\u8fc7\u884d\u5c04\u6570\u636e\u5f97\u5230\u7684\u91cc\u7279\u7ef4\u5fb7\u4e24\u76f8\u7cbe\u4fee\u62df\u5408\u56fe<\/p>\n

\u56fe<\/strong>3 K2<\/sub>Bi8<\/sub>Se13<\/sub><\/strong>\u7684\u80fd\u5e26\u7ed3\u6784\u5206\u6790<\/strong><\/p>\n

\"\"<\/p>\n

\uff08<\/strong>a<\/strong>\uff09<\/strong>\u5177\u6709\u81ea\u65cb\u8f68\u9053\u8026\u5408\uff08SOC\uff09\u7684K2<\/sub>Bi8<\/sub>Se13<\/sub>\u7684\u7535\u5b50\u7ed3\u6784<\/p>\n

\uff08<\/strong>b<\/strong>\uff09<\/strong>\u603b\u6001\u5bc6\u5ea6\u548c\u6295\u5c04\u6001\u5bc6\u5ea6<\/p>\n

\uff08<\/strong>c<\/strong>\uff09<\/strong>Se\u539f\u5b50\u7684p\u8f68\u9053\u5206\u5e03<\/p>\n

\uff08<\/strong>d<\/strong>\uff09<\/strong>Bi\u539f\u5b50\u7684p\u8f68\u9053\u5206\u5e03<\/p>\n

\u56fe<\/strong>4<\/strong> K2<\/sub>Bi8<\/sub>Se13<\/sub><\/strong>\u7684\u900f\u5c04\u7535\u955c\u548c\u7535\u5b50\u884d\u5c04\u5206\u6790<\/strong><\/p>\n

\"\"<\/p>\n

\uff08<\/strong>a<\/strong>\uff09<\/strong>K2<\/sub>Bi8<\/sub>Se13<\/sub>\u6cbf[010]\u65b9\u5411\u900f\u5c04\u7535\u955c\u4f4e\u500d\u56fe\u7247<\/p>\n

\uff08<\/strong>b<\/strong>\uff09<\/strong>\u5d4c\u5165K2.5<\/sub>Bi8.5<\/sub>Se14<\/sub>\u76f8\u7684K2<\/sub>Bi8<\/sub>Se13<\/sub>\u7684\u9ad8\u500d\u900f\u5c04\u7535\u56fe<\/p>\n

\uff08<\/strong>c<\/strong>\uff09<\/strong>\u4e24\u76f8\uff08K2.5<\/sub>Bi8.5<\/sub>Se14<\/sub>\u548cK2<\/sub>Bi8<\/sub>Se13<\/sub>\uff09\u7684\u7535\u5b50\u884d\u5c04\u56fe<\/p>\n

\uff08<\/strong>d<\/strong>\uff09<\/strong>K2<\/sub>Bi8<\/sub>Se13<\/sub>\u4e2d\u7684\u5806\u53e0\u5c42\u9519\uff08SF\uff09<\/p>\n

\uff08<\/strong>e<\/strong>\uff09<\/strong>K2<\/sub>Bi8<\/sub>Se13<\/sub>\u7684\u4f4e\u89d2\u5ea6\u6676\u7c92\u6676\u754c\uff08SAGB\uff09<\/p>\n

\uff08<\/strong>f<\/strong>\uff09<\/strong>\u4f4e\u89d2\u5ea6\u6676\u7c92\u6676\u754c\uff08SAGB\uff09\u7684\u7535\u5b50\u884d\u5c04\u56fe<\/p>\n

\u56fe<\/strong>5 <\/strong>\u4e0d\u540c\u8f7d\u6d41\u5b50\u6d53\u5ea6\u4e0b<\/strong>K2<\/sub>Bi8<\/sub>Se13<\/sub><\/strong>\u7684\u70ed\u7535\u6027\u8d28\u968f\u6e29\u5ea6\u53d8\u5316\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\uff08<\/strong>a<\/strong>\uff09<\/strong>\u7535\u5bfc\u7387<\/p>\n

\uff08<\/strong>b<\/strong>\uff09<\/strong>\u585e\u8d1d\u514b\u7cfb\u6570<\/p>\n

\uff08<\/strong>c<\/strong>\uff09<\/strong>\u529f\u7387\u56e0\u6570<\/p>\n

\uff08<\/strong>d<\/strong>\uff09<\/strong>Pisarenko\u66f2\u7ebf<\/p>\n

\u56fe<\/strong>6\u00a0<\/strong>\u4e0d\u540c\u8f7d\u6d41\u5b50\u6d53\u5ea6\u4e0b<\/strong>K2<\/sub>Bi8<\/sub>Se13<\/sub><\/strong>\u7684\u70ed\u7535\u6027\u8d28\u968f\u6e29\u5ea6\u53d8\u5316\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\uff08<\/strong>a<\/strong>\uff09<\/strong>\u603b\u70ed\u5bfc\u7387<\/p>\n

\uff08<\/strong>b<\/strong>\uff09<\/strong>\u6676\u683c\u70ed\u5bfc\u7387<\/p>\n

\uff08<\/strong>c<\/strong>\uff09<\/strong>K2<\/sub>Bi8<\/sub>Se13<\/sub>\u548c\u4e00\u4e9b\u5177\u6709\u4f4e\u70ed\u5bfc\u7387\u7684\u70ed\u7535\u6750\u6599\u95f4\u6676\u683c\u70ed\u5bfc\u7387\u7684\u6bd4\u8f83<\/p>\n

\uff08<\/strong>d<\/strong>\uff09<\/strong>\u54c1\u8d28\u56e0\u6570ZT<\/p>\n

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

\u5de5\u4e1a\u751f\u4ea7\u548c\u4eba\u7c7b\u751f\u6d3b\u4e2d\u4ea7\u751f\u7684\u5927\u91cf\u70ed\u80fd\u5927\u90e8\u5206\u90fd\u88ab\u76f4\u63a5\u6392\u653e\u8fdb\u4e86\u5730\u7403\u5927\u6c14\u4e2d\uff0c\u8fd9\u9020\u6210\u4e86\u6781\u5927\u7684\u80fd\u6e90\u6d6a\u8d39\uff0c\u56e0\u6b64\uff0c\u6536\u96c6\u8fd9\u4e9b\u5e9f\u70ed\u5c06\u5176\u8f6c\u5316\u4e3a\u7535\u80fd\u5c31\u6210\u4e3a\u4e86\u6781\u5177\u5e94\u7528\u524d\u666f\u7684\u7814\u7a76\u8bfe\u9898\u3002\u672c\u6587\u4e2d\u7814\u7a76\u7684\u70ed\u7535\u6750\u6599K2<\/sub>Bi8<\/sub>Se13<\/sub>\u5177\u6709\u6781\u5176\u4f18\u5f02\u7684\u70ed\u7535\u6027\u80fd\uff0c\u5bf9\u5176\u7ed3\u6784\u7684\u5206\u6790\u63ed\u793a\u4e86\u5176\u5177\u6709\u4f18\u5f02\u6027\u80fd\u7684\u539f\u56e0\uff0c\u8fd9\u4e5f\u4e3a\u6750\u6599\u7684\u8fdb\u4e00\u6b65\u5e94\u7528\u63d0\u4f9b\u4e86\u57fa\u7840\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Multiple Converged Conduction Bands in K2<\/sub>Bi8<\/sub>Se13<\/sub>: A Promising\u00a0Thermoelectric Material with Extremely Low Thermal Conductivity<\/a>\uff08J. Am. Chem. Soc., 2016, DOI: 10.1021\/jacs.6b09568\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4\u5927\u57ce\u5c0f\u7231\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

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