{"id":205562,"date":"2020-07-18T06:30:22","date_gmt":"2020-07-17T22:30:22","guid":{"rendered":"\/\/m.iemloyee.com\/?p=205562"},"modified":"2020-07-17T22:44:48","modified_gmt":"2020-07-17T14:44:48","slug":"%e3%80%90%e6%8a%95%e7%a8%bf%e3%80%91%e5%8d%8e%e4%b8%9c%e5%b8%88%e8%8c%83%e5%a4%a7%e5%ad%a6j-mater-chem-a%ef%bc%9a%e9%80%9a%e8%bf%87%e5%9b%ba%e4%bd%93%e6%a0%b8%e7%a3%81%e4%b8%8e%e9%a1%ba%e7%a3%81","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=205562","title":{"rendered":"\u534e\u4e1c\u5e08\u8303\u5927\u5b66J. Mater. Chem. A\uff1a\u901a\u8fc7\u56fa\u4f53\u6838\u78c1\u4e0e\u987a\u78c1\u5171\u632f\u6280\u672f\u63ed\u793a\u9633\u79bb\u5b50\u65e0\u5e8f\u6b63\u6781\u6750\u6599Li1.2Ti0.4Mn0.4O2\u4e2d\u7684\u9634\u79bb\u5b50\u6c27\u5316\u8fd8\u539f\u4e0e\u7ed3\u6784\u8870\u9000"},"content":{"rendered":"

\u5f15\u8a00<\/b><\/strong><\/p>\n

\u9502\u79bb\u5b50\u7535\u6c60\u7684\u6210\u672c\u4e3b\u8981\u96c6\u4e2d\u5728\u6b63\u6781\u6750\u6599\uff0c\u964d\u4f4e\u9502\u79bb\u5b50\u7535\u6c60\u7684\u6b63\u6781\u6210\u672c\u5e76\u63d0\u9ad8\u5176\u80fd\u91cf\u5bc6\u5ea6\u662f\u8fd1\u51e0\u5e74\u6700\u91cd\u8981\u7684\u8bfe\u9898\u4e4b\u4e00\u3002\u9633\u79bb\u5b50\u65e0\u5e8f\u6b63\u6781\u6750\u6599\u662f\u8fd1\u51e0\u5e74\u65b0\u53d1\u73b0\u7684\u4e00\u7c7b\u6b63\u6781\u6750\u6599\uff0c\u5176\u7279\u70b9\u662f\u5177\u6709\u72ec\u7279\u76840-TM\u6e17\u900f\u901a\u9053\uff0c\u9502\u79bb\u5b50\u80fd\u65b9\u4fbf\u5730\u5728\u5176\u4e2d\u8fc1\u79fb\u3002\u53e6\u5916\uff0c\u5728\u6b64\u7c7b\u6750\u6599\u4e2d\u9664\u4e86\u8fc7\u6e21\u91d1\u5c5e\u7684\u6c27\u5316\u8fd8\u539f\uff0c\u8fd8\u53ef\u4ee5\u53d1\u751f\u9634\u79bb\u5b50\u6c27\u5316\u8fd8\u539f\uff0c\u603b\u5171\u80fd\u63d0\u4f9b\u8d85\u8fc7300\u00a0mAh\u00a0g-1<\/sup>\u7684\u9ad8\u6bd4\u5bb9\u91cf\u3002\u5bf9\u4e8e\u5b9e\u9645\u5e94\u7528\u800c\u8a00\uff0c\u6b64\u7c7b\u6750\u6599\u5b58\u5728\u4e24\u4e2a\u4e3b\u8981\u95ee\u9898\u3002\u4e00\u4e2a\u662f\u9996\u5708\u5145\u653e\u7535\u7684\u4e0d\u53ef\u9006\u5bb9\u91cf\u592a\u5927\uff0c\u53e6\u4e00\u4e2a\u662f\u5145\u7535\u7535\u538b\u4e0e\u653e\u7535\u7535\u538b\u95f4\u5b58\u5728\u8f83\u5927\u7684\u7535\u538b\u6ede\u540e\u3002\u56e0\u6b64\uff0c\u5f04\u6e05\u9633\u79bb\u5b50\u65e0\u5e8f\u6b63\u6781\u6750\u6599\u7684\u5145\u653e\u7535\u673a\u7406\u5bf9\u4e8e\u8bbe\u8ba1\u66f4\u597d\u7684\u6b63\u6781\u6750\u6599\u6709\u7740\u91cd\u8981\u7684\u6307\u5bfc\u610f\u4e49\u3002\u7136\u800c\uff0c\u76ee\u524d\u5bf9\u4e8e\u6b64\u7c7b\u6750\u6599\u7684\u5145\u653e\u7535\u673a\u7406\u7814\u7a76\u8f83\u5c11\uff0c\u5176\u4e2d\u7684\u4e3b\u8981\u56f0\u96be\u5728\u4e8e\u9633\u79bb\u5b50\u6392\u5e03\u7684\u65e0\u5e8f\u6027\u3002\u4e00\u822c\u7684XRD\u8868\u5f81\u53ea\u80fd\u7ed9\u51fa\u957f\u7a0b\u6709\u5e8f\u7684\u5468\u671f\u6027\u4fe1\u606f\uff0c\u800c\u6b64\u7c7b\u6750\u6599\u4e2d\u7684\u5c40\u90e8\u7ed3\u6784\u5c24\u4e3a\u91cd\u8981\uff0c\u7279\u522b\u662f\u5f53\u6c27\u539f\u5b50\u4e0a\u53d1\u751f\u4e86\u6c27\u5316\u8fd8\u539f\u3002<\/p>\n

\u6210\u679c\u7b80\u4ecb<\/b><\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u534e\u4e1c\u5e08\u8303\u5927\u5b66\u7269\u7406\u4e0e\u7535\u5b50\u79d1\u5b66\u5b66\u9662\u7684\u80e1\u70b3\u6587\u8bfe\u9898\u7ec4\u4e0e\u6cd5\u56fd\u91cc\u5c14\u5927\u5b66\u9ad8\u573a\u6838\u78c1\u4e2d\u5fc3<\/b><\/strong>\u4ee517<\/sup>O\u6807\u8bb0\u7684Li1.2<\/sub>Ti0.4<\/sub>Mn0.4<\/sub>O2<\/sub>\u4e3a\u6a21\u578b\uff0c\u901a\u8fc7\u56fa\u4f53\u6838\u78c1\u4e0e\u987a\u78c1\u5171\u632f\u6280\u672f\u7814\u7a76\u4e86\u9633\u79bb\u5b50\u65e0\u5e8f\u6b63\u6781\u6750\u6599\u9996\u5708\u5145\u653e\u7535\u8fc7\u7a0b\u4e2d\u7684\u5c40\u90e8\u539f\u5b50\u73af\u5883\u4e0e\u7535\u5b50\u7ed3\u6784\u7684\u53d8\u5316\uff0c\u5e76\u7ed9\u51fa\u4e86\u5176\u9634\u79bb\u5b50\u6c27\u5316\u8fd8\u539f\u4e0e\u7ed3\u6784\u8870\u9000\u7684\u673a\u5236\u3002\u8be5\u6210\u679c\u4ee5\u9898\u4e3a\u201c<\/b><\/strong>Anionic Redox and Structural Degradation in Cation-Disordered Rock-Salt Li<\/b><\/strong>1.2<\/b><\/sub><\/strong>Ti<\/b><\/strong>0.4<\/b><\/sub><\/strong>Mn<\/b><\/strong>0.4<\/b><\/sub><\/strong>O<\/b><\/strong>2<\/b><\/sub><\/strong>\u00a0Cathode Material Revealed by Solid-State NMR and EPR\u201d\u6700\u8fd1\u53d1\u8868\u5728J. Mater. Chem. A\u4e0a\u3002<\/b><\/strong><\/p>\n

\u56fe\u6587\u5bfc\u8bfb<\/b><\/strong><\/p>\n

\u56fe1<\/b><\/strong>. <\/b><\/strong>\u539f\u59cb<\/b><\/strong>Li<\/b><\/strong>1.2<\/b><\/sub><\/strong>Ti<\/b><\/strong>0.4<\/b><\/sub><\/strong>Mn<\/b><\/strong>0.4<\/b><\/sub><\/strong>O<\/b><\/strong>2<\/b><\/sub><\/strong>\u6837\u54c1\u7684X<\/b><\/strong>RD<\/b><\/strong>\u4e0eN<\/b><\/strong>MR<\/b><\/strong>\u8868\u5f81<\/b><\/strong><\/p>\n

\"\"<\/p>\n

a) Li2<\/sub>Ti0.4<\/sub>Mn0.4<\/sub>O2<\/sub>(LTMO)\u7684\u540c\u6b65\u8f90\u5c04XRD\u8c31\u56fe\uff1bb) LTMO\u7684\u6676\u4f53\u7ed3\u6784\u53caLi\u7684\u5c40\u90e8\u73af\u5883\u793a\u610f\u56fe\uff1bc) \u539f\u59cbLTMO\u76847<\/sup>LipjMATPASS NMR\u8c31\uff1bd) \u539f\u59cbLTMO\u768417<\/sup>O\u00a0MAS NMR\u8c31\uff0c\u201c*\u201d\u6807\u51fa\u4e86\u65cb\u8f6c\u8fb9\u5e26\u3002<\/p>\n

\u56fe2<\/b><\/strong>. LTMO<\/b><\/strong>\u7684\u7535\u5316\u5b66\u8868\u5f81<\/b><\/strong><\/p>\n

\"\"<\/p>\n

a)45\u00b0C\u4e0b\uff0cLTMO\u572810 mA g-1<\/sup>\u7535\u6d41\u5bc6\u5ea6\u4e0b\u7684\u9996\u5708\u6052\u6d41\u5145\u653e\u7535\u66f2\u7ebf\uff1bb) \u9996\u4e24\u5708\u7684\u5faa\u73af\u4f0f\u5b89\u66f2\u7ebf\uff0c\u626b\u901f\u4e3a0.02 mV s-1<\/sup>\u3002<\/p>\n

\u56fe3<\/b><\/strong>. <\/b><\/strong>\u9996\u5708\u5145\u653e\u7535\u8fc7\u7a0b\u4e2dL<\/b><\/strong>TMO<\/b><\/strong>\u7684\u975e\u539f\u4f4dNMR\u8c31<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u4e0d\u540c\u8377\u7535\u72b6\u6001\u4e0bLTMO\u76847<\/sup>Li pjMATPASS (a) \u548c\u00a017<\/sup>O MAS (b) NMR\u8c31\uff1bc) \u4e0d\u540c\u8377\u7535\u72b6\u6001\u4e0bLTMO\u4e2d\u7684\u987a\u78c1\u73af\u5883Li\u00a0(P-Li)\u548c\u6297\u78c1\u73af\u5883Li (D-Li)\u7684\u5f52\u4e00\u5316\u542b\u91cf\uff1bd) \u987a\u78c1\u73af\u58837<\/sup>Li\u7684NMR\u4f4d\u79fb\uff1be) 1<\/sup>7<\/sup>O\u7684NMR\u4f4d\u79fb\u3002<\/p>\n

\u56fe4<\/b><\/strong>. <\/b><\/strong>\u9996\u5708\u5145\u653e\u7535\u8fc7\u7a0b\u4e2dL<\/b><\/strong>TMO<\/b><\/strong>\u7684\u975e\u539f\u4f4dEPR\u8c31<\/b><\/strong><\/p>\n

\"\"<\/p>\n

1.8\u00a0K\u4e0b\uff0c\u4e0d\u540c\u8377\u7535\u72b6\u6001\u4e0bLTMO\u7684\u5782\u76f4\u6a21\u5f0fCW-EPR\u8c31\uff1aa) Mn\u7684\u6c27\u5316\u9636\u6bb5\uff1bb) O\u7684\u6c27\u5316\u9636\u6bb5\uff1bc) \u8fd8\u539f\u9636\u6bb5\u3002345 mT\u5904\u7684\u5c16\u9510\u5171\u632f\u4fe1\u53f7\u6765\u6e90\u4e8e\u5bfc\u7535\u70ad\u9ed1\u4e2d\u7684\u79bb\u57df\u7535\u5b50\u3002<\/p>\n

\u56fe5<\/b><\/strong>. <\/b><\/strong>F<\/b><\/strong>FT<\/b><\/strong>\u5904\u7406\u7684TEM\u56fe<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u539f\u59cb\u6837\u54c1\u00a0(a)\uff0cC150 (b)\uff0cC358 (c)\u00a0\u4ee5\u53ca\u00a0D251 (d)\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362(FFT)\u5904\u7406\u7684TEM\u56fe\u3002\u7bad\u5934\u6807\u51fa\u7684\u6f2b\u6563\u5c04\u56fe\u7eb9\u662f\u7531\u77ed\u7a0b\u6709\u5e8f(SRO)\u5f15\u8d77\u7684\u3002<\/p>\n

\u56fe6<\/b><\/strong>. <\/b><\/strong>\u6c27\u7684\u5c40\u90e8\u73af\u5883\u4e0eLTMO\u80fd\u5e26\u7ed3\u6784\u6f14\u53d8\u793a\u610f\u56fe<\/b><\/strong><\/p>\n

\"\"<\/p>\n

a) LTMO\u4e2d\u5178\u578b\u7684O\u7684\u914d\u4f4d\u73af\u5883\uff1bb) LTMO\u9996\u6b21\u5145\u7535\u8fc7\u7a0b\u4e2d\uff0c\u80fd\u5e26\u7ed3\u6784\u7684\u6f14\u5316\u793a\u610f\u56fe\u3002<\/p>\n

\u603b\u7ed3\u4e0e\u5c55\u671b<\/b><\/strong><\/p>\n

\u901a\u8fc7\u56fa\u4f53\u6838\u78c1\u6280\u672f\uff0c\u6211\u4eec\u9996\u6b21\u89c2\u5bdf\u5230\u4e86\u9633\u79bb\u5b50\u65e0\u5e8f\u6b63\u6781\u6750\u6599\u4e2d\u4e0d\u540c\u5316\u5b66\u73af\u5883\u4e0b\u7684Li\u7684\u542b\u91cf\u7684\u53d8\u5316\u4ee5\u53caO\u7684\u5c40\u90e8\u73af\u5883\u5206\u5e03\u3002Li\u79bb\u5b50\u4f18\u5148\u4ece\u5bccLi\u73af\u5883\u4e2d\u8131\u51fa\uff0c\u5370\u8bc1\u4e860-TM\u6269\u6563\u7684\u4f18\u5f02\u6027\u3002\u7531\u4e8e\u9633\u79bb\u5b50\u65e0\u5e8f\u6750\u6599\u4e2d\u5b58\u5728\u5404\u79cd\u4e0d\u540c\u7684\u5c40\u90e8\u73af\u5883\uff0cO\u7684\u6c27\u5316\u8fd8\u539f\u6d89\u53ca\u4e86Ti\u5305\u56f4\u4e0b\u7684\u7c7b\u8fc7\u6c27\u79bb\u5b50(O2<\/sub>)n<\/i><\/sup><\/em>\u2212<\/sup>\u4ee5\u53caMn\u5305\u56f4\u4e0b\u7684O\u00a02p<\/i><\/em>\u4e0a\u7684\u7535\u5b50\u7a7a\u7a74\u7684\u751f\u6210\u3002\u7c7b\u8fc7\u6c27\u79bb\u5b50\u4e2d\u7684\u7a33\u5b9a\u7684O-O\u952e\u96be\u4ee5\u88ab\u8fd8\u539f\uff0c\u56e0\u6b64\u5bfc\u81f4\u4e86\u5145\u653e\u7535\u95f4\u7684\u7535\u538b\u6ede\u540e\u30027<\/sup>Li\u00a0NMR\u4e2d\u8fd8\u89c2\u5bdf\u5230\u4e86\u5faa\u73af\u4e00\u5708\u540e\u6297\u78c1\u6027\u73af\u5883\u4e2d\u7684Li\u7684\u4e0d\u53ef\u9006\u635f\u5931\uff0c\u8fd9\u79cdLi\u73af\u5883\u7684\u53d8\u5316\u53ef\u80fd\u662f\u7531\u4e8e\u9ad8\u7535\u538b\u4e0b\u7684\u6c27\u6c14\u6790\u51fa\u548c\u8fc7\u6e21\u91d1\u5c5e\u8fc1\u79fb\u6240\u5f15\u8d77\u7684\u3002FFT\u5904\u7406\u7684TEM\u4e2d\u53d1\u73b0\u4e86\u5faa\u73af\u4e00\u5708\u540e\u77ed\u7a0b\u6709\u5e8f\u66f4\u4e3a\u4e25\u91cd\uff0c\u610f\u5473\u7740\u5c40\u90e8\u7ed3\u6784\u7684\u65e0\u5e8f-\u6709\u5e8f\u8f6c\u53d8\uff0c\u4ece\u800c\u6076\u5316\u4e86Li\u79bb\u5b50\u7684\u6269\u6563\u52a8\u529b\u5b66\u3002\u867d\u7136O\u7684\u6c27\u5316\u8fd8\u539f\u4e3a\u6b63\u6781\u6750\u6599\u63d0\u4f9b\u4e86\u989d\u5916\u7684\u6bd4\u5bb9\u91cf\uff0c\u4f46\u5176\u5f15\u53d1\u4e86\u7535\u538b\u6ede\u540e\u548c\u7ed3\u6784\u8870\u9000\u95ee\u9898\u3002\u5728\u6709\u5e8f\u7684\u5c42\u72b6\u6b63\u6781\u6750\u6599\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u8d85\u7ed3\u6784\u8c03\u63a7\u7684\u65b9\u6cd5\u6765\u5e94\u5bf9\u6b64\u7c7b\u95ee\u9898\uff0c\u4f46\u662f\u5f88\u53ef\u60dc\u65e0\u6cd5\u9002\u7528\u4e8e\u65e0\u5e8f\u6750\u6599\u3002\u9633\u79bb\u5b50\u65e0\u5e8f\u6b63\u6781\u6750\u6599\u4e2d\u53ef\u4ee5\u5927\u91cf\u5e94\u7528\u524d\u8fc7\u6e21\u91d1\u5c5e\uff0c\u4e14F\u53d6\u4ee3\u6613\u4e8e\u5b9e\u73b0\uff0c\u56e0\u6b64\uff0c\u57fa\u4e8e\u591a\u7535\u5b50\u5f97\u5931\u7684\u7eaf\u8fc7\u6e21\u91d1\u5c5e\u6c27\u5316\u8fd8\u539f\u66f4\u52a0\u9002\u5408\u9633\u79bb\u5b50\u65e0\u5e8f\u6b63\u6781\u6750\u6599\uff0c\u4ece\u800c\u5728\u517c\u5177\u9ad8\u5bb9\u91cf\u7684\u540c\u65f6\u514b\u670d\u7535\u538b\u6ede\u540e\u548c\u7ed3\u6784\u8870\u9000\u95ee\u9898\u3002<\/p>\n

\u6587\u7ae0\u94fe\u63a5\uff1aAnionic Redox and Structural Degradation in Cation-Disordered Rock-Salt Li1.2<\/sub>Ti0.4<\/sub>Mn0.4<\/sub>O2<\/sub>\u00a0Cathode Material Revealed by Solid-State NMR and EPR. J. Mater. Chem. A<\/i><\/em>, 2020<\/b><\/strong>, DOI: 10.1039\/D0TA03358H<\/p>\n

\u672c\u6587\u7531\u534e\u4e1c\u5e08\u8303\u5927\u5b66\u7269\u7406\u4e0e\u7535\u5b50\u79d1\u5b66\u5b66\u9662\u80e1\u70b3\u6587\u8bfe\u9898\u7ec4\u4f9b\u7a3f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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