{"id":229014,"date":"2021-10-31T06:30:28","date_gmt":"2021-10-30T22:30:28","guid":{"rendered":"\/\/m.iemloyee.com\/?p=229014"},"modified":"2021-10-30T21:54:41","modified_gmt":"2021-10-30T13:54:41","slug":"%e3%80%90%e5%b7%b2%e6%a0%a1%e7%a8%bf%e3%80%91nat-nanotechnol-%e6%89%ad%e8%bd%ac%e5%ba%94%e5%8f%98%e5%8a%a9%e5%8a%9b%e7%94%b5%e8%a7%a3%e6%b0%b4%e4%ba%a7%e6%b0%a2%ef%bc%8c%e6%88%90%e6%9c%ac%e4%bd%8e","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=229014","title":{"rendered":"Nat. Nanotechnol.: \u626d\u8f6c\u5e94\u53d8\u52a9\u529b\u7535\u89e3\u6c34\u4ea7\u6c22\uff0c\u6210\u672c\u4f4e\u81f3\u6bcf\u516c\u65a41\u7f8e\u5143\uff01"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n \u8d28\u5b50\u4ea4\u6362\u819c\uff08PEM\uff09\u7535\u89e3\u6c34\u5236\u6c22\u6280\u672f\u5177\u6709\u7535\u6d41\u5bc6\u5ea6\u5927\u3001\u80fd\u91cf\u6548\u7387\u9ad8\u7684\u4f18\u70b9\u3002\u7531\u4e8e\u6790\u6c27\u53cd\u5e94\uff08OER\uff09\u662f\u6d89\u53ca\u591a\u79cd\u6c27\u4e2d\u95f4\u4f53\u7684\u7f13\u6162\u56db\u7535\u5b50\u8f6c\u79fb\u8fc7\u7a0b\uff0c\u8be5\u53cd\u5e94\u5177\u6709\u8f83\u9ad8\u7684\u50ac\u5316\u8fc7\u7535\u4f4d\uff0c\u7535\u89e3\u6c34\u7684\u6548\u7387\u901a\u5e38\u53d7\u5230OER\u7684\u663e\u7740\u9650\u5236\u3002\u6b64\u5916\uff0c\u8bb8\u591aOER\u50ac\u5316\u5242\u5728\u9178\u6027\u6eb6\u6db2\uff08PEM\u9633\u6781\u533a\u5904\u4e8e\u9178\u6027\u73af\u5883\uff09\u4e2d\u7684\u7a33\u5b9a\u6027\u5dee\uff0c\u4f7f\u5f97\u5bf9PEM\u7535\u89e3\u69fd\u7684\u5e94\u7528\u63d0\u51fa\u4e86\u66f4\u591a\u6311\u6218\u3002\u76ee\u524d\u4e3a\u6b62\uff0cIrOx<\/sub>\u662f\u552f\u4e00\u5df2\u77e5\u7684\u5728PEM\u4e2d\u5927\u89c4\u6a21\u5de5\u4e1a\u5316\u5e94\u7528\u7684OER\u7535\u50ac\u5316\u5242\u3002\u7136\u800c\uff0c\u76ee\u524d\u7684IrOx<\/sub>\u50ac\u5316\u5242\u4ecd\u7136\u5b58\u5728\u8d28\u91cf\u6d3b\u6027\u4f4e\u7684\u95ee\u9898\uff0c\u96be\u4ee5\u6ee1\u8db3\u5546\u4e1a\u7535\u6d41\u5bc6\u5ea6\u4e0b\u9ad8\u6027\u80fd\u548c\u957f\u671f\u7a33\u5b9a\u6027\u7684\u8981\u6c42\u3002\u8fdb\u4e00\u6b65\u63d0\u9ad8\u5176\u50ac\u5316\u6027\u80fd\u5e76\u964d\u4f4e\u8d35\u91d1\u5c5e\u7684\u8d1f\u8f7d\u91cf\uff0c\u540c\u65f6\u63d0\u9ad8\u9178\u6027OER\u50ac\u5316\u5242\u7684\u7a33\u5b9a\u6027\u5c06\u4f7fPEM\u7535\u89e3\u6c34\u5236\u6c22\u6280\u672f\u66f4\u5177\u7ade\u4e89\u529b\u3002<\/p>\n \u8fd1\u65e5\uff0c\u6d59\u6c5f\u5927\u5b66\u5f20\u5174\u65fa<\/strong>\/<\/strong>\u96f7\u4e50\u6210\u8bfe\u9898\u7ec4\u548c\u7f8e\u56fd\u5a01\u65af\u5eb7\u8f9b\u5927\u5b66\u9ea6\u8fea\u900a\u5206\u6821\u91d1\u677e\u8bfe\u9898\u7ec4<\/strong>\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u901a\u8fc7\u4f7f\u7528\u5feb\u901f\u70ed\u89e3\u5408\u6210\u7b56\u7565\u5e76\u5c06\u5916\u6765\u91d1\u5c5e\uff08Ta\u548cTm\uff09\u63ba\u6742\u5230IrO2-\u03b4<\/sub>\u4e2d\uff0c\u63d0\u51fa\u4e86\u4e00\u79cd\u626d\u8f6c\u5e94\u53d8Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\uff0c\u5e76\u4e14\u5177\u6709\u4e30\u5bcc\u7684\u4e09\u53c9\u6676\u754cGB\uff08GB-Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\uff09\uff0c\u5176\u8d28\u91cf\u6d3b\u6027\u660e\u663e\u9ad8\u4e8eIrO2-\u03b4<\/sub>\u548c\u5546\u4e1a\u5316IrO2<\/sub>\uff08C-IrO2<\/sub>\uff09\u3002GB-Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u572810 mA cm-2<\/sup>\u548c0.5 MH2<\/sub>SO4<\/sub>\u7684\u6761\u4ef6\u4e0b\uff0c\u8868\u73b0\u51fa\u7684\u6790\u6c27\u53cd\u5e94\u8fc7\u7535\u4f4d\u4e3a198 mV\u3002\u540c\u65f6\uff0c\u5fae\u89c2\u7ed3\u6784\u5206\u6790\u3001X\u5c04\u7ebf\u5438\u6536\u5149\u8c31\u548c\u7406\u8bba\u8ba1\u7b97\u8868\u660e\uff0c\u6676\u754c\u4e4b\u95f4\u7684\u626d\u8f6c\u5e94\u53d8\u4f18\u5316\u4e86Ir\u2013O\u952e\u534f\u540c\u63ba\u6742\u8bf1\u5bfc\u7684\u914d\u4f53\u6548\u5e94\u5171\u540c\u8c03\u8282\u4e86\u6d3b\u6027\u4f4d\u70b9\u5bf9\u6c27\u4e2d\u95f4\u4f53\u7684\u5438\u9644\u80fd\uff0c\u4ece\u800c\u63d0\u9ad8\u5176\u50ac\u5316\u6d3b\u6027\u3002\u57281.5 A cm-2<\/sup>\u548c0.2 mg cm-2<\/sup>\u7684\u8d1f\u8f7d\u91cf\u4e0b\uff0cGB-Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u4f5c\u4e3a\u8d28\u5b50\u4ea4\u6362\u819c\u7535\u89e3\u69fd\u7684\u9633\u6781\u50ac\u5316\u5242\u7a33\u5b9a\u8fd0\u884c500\u5c0f\u65f6\uff0c\u4f30\u8ba1\u751f\u4ea7\u6bcf\u516c\u65a4H2<\/sub>\u6210\u672c\u4e3a1\u7f8e\u5143\uff0c\u8fdc\u4f4e\u4e8e\u7531\u7f8e\u56fd\u80fd\u6e90\u90e8\u8bbe\u5b9a\u7684\u76ee\u6807\uff08\u6bcf\u516c\u65a42\u7f8e\u5143) \u3002\u76f8\u5173\u7814\u7a76\u6210\u679c\u4ee5\u201cTorsion strained iridium oxide for efficient acidic water oxidation in proton exchange membrane electrolyzers<\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728Nat. Nanotechnol.<\/em><\/strong>\u4e0a\u3002 \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe\u4e00\u3001\u626d\u8f6c\u5e94\u53d8<\/strong>Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u7eb3<\/strong>\u7c73\u50ac\u5316\u5242\u7684\u5408\u6210\u4e0e\u8868\u5f81<\/strong> \uff08a\uff09\u901a\u8fc7\u5feb\u901f\u70ed\u89e3\u5408\u6210GB-Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\uff08\u9876\u90e8\uff09\u4e0e\u901a\u8fc7\u7f13\u6162\u70ed\u89e3\u5408\u6210Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u9897\u7c92\uff08\u5e95\u90e8\uff09\u7684\u8def\u7ebf\u793a\u610f\u56fe\uff1b<\/p>\n \uff08b-d\uff09\u65e0GB\u7684Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u9897\u7c92\u7684\u4f4e\u5206\u8fa8\u7387TEM\u3001HRTEM\u548c\u653e\u5927\u7684HRTEM\u56fe\u50cf\uff1b<\/p>\n \uff08e-g\uff09GB-Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u7684\u4f4e\u5206\u8fa8\u7387TEM\u3001HRTEM\u548c\u653e\u5927HRTEM \u56fe\u50cf\uff1b<\/p>\n \uff08h\uff09\u7531\u4e8e\u6676\u683c\u626d\u8f6c\u5f15\u8d77GB\u7684\u6a21\u62df\u7ed3\u6784\uff1b<\/p>\n \uff08i\uff09GB\u533a\u57df\u7684\u6676\u683c\u5206\u8fa8HRTEM\u56fe\u50cf\uff1b<\/p>\n \uff08j\uff0ck\uff09\u76f8\u5bf9\u5e94\u7684\u8f74\u5411\u5e94\u53d8\uff08\u025bxx<\/sub>\uff09\u548c\u526a\u5207\u5e94\u53d8\uff08\u025bxy<\/sub>\uff09\u7684GPA\u56fe\u50cf\uff1b<\/p>\n \uff08l\uff09\u7531\u4e8e\u6676\u683c\u626d\u8f6c\u800c\u6a21\u62df\u7684SF\u7ed3\u6784\uff1b<\/p>\n \uff08m\uff09SF\u533a\u57df\u7684\u6676\u683c\u5206\u8fa8HRTEM\u56fe\u50cf\uff1b<\/p>\n \uff08n\uff0co\uff09\u76f8\u5bf9\u5e94\u7684\u8f74\u5411\u5e94\u53d8\uff08\u025bxx<\/sub>\uff09\u548c\u526a\u5207\u5e94\u53d8\uff08\u025bxy<\/sub>\uff09\u7684GPA\u56fe\u50cf\u3002<\/p>\n \u56fe\u4e8c\u3001\u50ac\u5316\u5242\u7684\u8868\u9762<\/strong>XPS<\/strong>\u548c<\/strong>XANES<\/strong>\u4e0e<\/strong>EXAFS<\/strong>\u5206\u6790<\/strong> \uff08a\uff09GB-IrO2-\u03b4<\/sub>\u3001GB-Ta0.1<\/sub>Ir0.9<\/sub>O2-\u03b4<\/sub>\u3001GB-Tm0.1<\/sub>Ir0.9<\/sub>O2-\u03b4<\/sub>\u548cGB-Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u7684Ir 4f XPS\u80fd\u8c31\uff1b<\/p>\n \uff08b\uff09Ir\u7b94\u3001C-IrO2<\/sub>\u3001GB-IrO2-\u03b4<\/sub>\u548cGB-Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7684Ir L-\u8fb9\u7f18XANES\u80fd\u8c31\uff1b<\/p>\n \uff08c\uff09Ir\u7b94\u3001C-IrO2<\/sub>\u3001GB-IrO2-\u03b4<\/sub>\u7684EXAFS\u80fd\u8c31\uff1b<\/p>\n \uff08d\uff09Ir\u7b94\u3001GB-IrO2-\u03b4<\/sub>\u548cGB-Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7684EXAFS\u80fd\u8c31\u3002<\/p>\n \u56fe\u4e09\u3001\u7eb3\u7c73\u50ac\u5316\u5242\u5728<\/strong>0.5 M H2<\/sub>SO4<\/sub><\/strong>\u7535\u89e3\u8d28\u4e2d<\/strong>OER<\/strong>\u7684\u7535\u50ac\u5316\u6027\u80fd<\/strong> \uff08a\uff09GB-Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u3001GB-IrO2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u4e0e\u4e0d\u542bGB\u7684\u7eb3\u7c73\u50ac\u5316\u5242\u7684LSV\u66f2\u7ebf\u5bf9\u6bd4\uff1b<\/p>\n \uff08b\uff09\u4e0d\u540c\u63ba\u6742GB-Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u6837\u54c1\u4e0eC-IrO2<\/sub>\u7684LSV\u66f2\u7ebf\u5bf9\u6bd4\uff1b<\/p>\n \uff08c\uff09\u7eb3\u7c73\u50ac\u5316\u5242\u5728\u03b7=266 mV\u65f6\u7684\u8d28\u91cf\u6d3b\u6027\u663e\u793a\u4e86\u5e94\u53d8\u548c\u63ba\u6742\u5bf9\u589e\u5f3aOER\u6d3b\u6027\u7684\u5f71\u54cd\uff1b<\/p>\n \uff08d\uff09GB-Tax<\/sub>Tmy<\/sub>Ir1-x-y<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u572810 mA cm-2<\/sup>\u65f6\u7684\u8ba1\u65f6\u7535\u4f4d\u66f2\u7ebf\u3002<\/p>\n \u56fe\u56db\u3001\u901a\u8fc7\u5e94\u53d8\u548c\u63ba\u6742\u8c03\u6574<\/strong>IrO2-\u03b4<\/sub><\/strong>\u7684\u7535\u5b50\u7ed3\u6784<\/strong> \uff08a\uff09\u5e94\u53d8\u534f\u540c\u63ba\u6742\u5bf9\u63d0\u9ad8\u50ac\u5316\u6d3b\u6027\u7684\u5f71\u54cd\u7684\u8bf4\u660e\uff1b<\/p>\n \uff08b\uff09IrO2<\/sub>\u3001Ta0.1<\/sub>Ir0.9<\/sub>O2-\u03b4<\/sub>\u3001Tm0.1<\/sub>Ir0.9<\/sub>O2-\u03b4<\/sub>\u548cTa0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7684\u8fc7\u7535\u4f4d\u4e0ep\u5e26\u4e2d\u5fc3\u7684\u76f8\u5173\u6027\uff1b<\/p>\n \uff08c\uff09IrO2<\/sub>\u4e0eGB-IrO2<\/sub>\u3001GB-IrO2<\/sub>\u4e0eTa0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u548cIrO2<\/sub>\u4e0eTa0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7684DOS\uff1b<\/p>\n \uff08d\uff09\u0394GOH<\/sub>\u548c\u0394GOOH<\/sub>\u7684\u76f8\u5173\u6027\uff1b<\/p>\n \uff08e\uff09\u901a\u8fc7\u63ba\u6742\u548c\u5e94\u53d8\u6548\u5e94\u5efa\u7acb\u7684\u0394GO<\/sub>-\u0394GOH<\/sub>\u4e0e\u8fc7\u7535\u52bf\u7684\u706b\u5c71\u56fe\u5173\u7cfb\u3002<\/p>\n \u56fe\u4e94\u3001<\/strong>PEM<\/strong>\u7535\u89e3\u69fd<\/strong> \uff08a\uff09PEM\u7535\u89e3\u69fd\u793a\u610f\u56fe\uff1b<\/p>\n \uff08b\uff09PEM\u7535\u89e3\u69fd\u7684\u6781\u5316\u66f2\u7ebf\uff1b<\/p>\n \uff08c\uff09\u9633\u6781\u50ac\u5316\u5242\u572850 \u2103\u65f6\u7684\u6548\u7387\u548cTOF\uff1b<\/p>\n \uff08d\uff09GB-Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u5728PEM\u7535\u89e3\u69fd\u4e2d\u7684\u8ba1\u65f6\u7535\u4f4d\u66f2\u7ebf\u3002<\/p>\n \u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u8be5\u8bba\u6587\u521b\u65b0\u5730\u63d0\u51fa\u4e86\u4e00\u79cd\u65b0\u578b\u7684\u626d\u5e94\u53d8Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\uff0c\u7531\u4e8e\u6676\u754c\u81f4\u5e94\u53d8\u548c\u63ba\u6742\u7684\u534f\u540c\u4f5c\u7528\uff0c\u8be5\u50ac\u5316\u5242\u5bf9\u9178\u6027OER\u8868\u73b0\u51fa\u4f18\u5f02\u7684\u6d3b\u6027\u548c\u7a33\u5b9a\u6027\u3002Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u6676\u57df\u4e4b\u95f4\u7684\u6676\u754c\u5e94\u53d8\u4e3b\u8981\u626d\u8f6c\u8c03\u6574\u4e86Ir\u2013O\u952e\u957f\uff0c\u4f18\u5316\u4e86\u6d3b\u6027\u4f4d\u70b9Ir\u5bf9\u6c27\u4e2d\u95f4\u4f53\u7684\u5438\u9644\u80fd\u5e76\u964d\u4f4e\u4e86OER\u7684\u80fd\u5792\uff0c\u540c\u65f6\u4f7f\u50ac\u5316\u5242\u4fdd\u6301\u4e86\u4f18\u79c0\u7684\u50ac\u5316\u5242\u7a33\u5b9a\u6027\u3002\u6b64\u5916\uff0c\u8fc7\u6e21\u91d1\u5c5eTa\u548c\u7a00\u571f\u5143\u7d20Tm\u5171\u63ba\u6742IrO2-\u03b4<\/sub>\u5f15\u8d77\u7684\u63ba\u6742\u6548\u5e94\u4e5f\u8c03\u6574\u4e86\u6d3b\u6027\u4f4d\u70b9\u7684\u7535\u5b50\u7ed3\u6784\uff0c\u4f18\u5316\u4e86\u6d3b\u6027\u4f4d\u70b9\u5bf9\u50ac\u5316\u4e2d\u95f4\u4f53\u7684\u7ed3\u5408\u80fd\u3002\u66f4\u6709\u610f\u4e49\u7684\u662f\uff0c\u5728\u5de5\u4e1a\u8fd0\u884c\u6761\u4ef6\u4e0b\uff0c\u65b0\u578b\u626d\u8f6c\u5e94\u53d8Ta0.1<\/sub>Tm0.1<\/sub>Ir0.8<\/sub>O2-\u03b4<\/sub>\u7eb3\u7c73\u50ac\u5316\u5242\u5e94\u7528\u5728\u4e86PEM\u7535\u89e3\u69fd\u4e2d\uff0c\u5b9e\u73b0\u4e86\u7a33\u5b9a\u7684\u7535\u89e3\u6c34\u5236\u6c22\u3002\u8be5\u9879\u7814\u7a76\u5de5\u4f5c\u4e0d\u4ec5\u4ec5\u5c55\u793a\u4e86\u4e00\u79cd\u9ad8\u6548\u7684OER\u7eb3\u7c73\u50ac\u5316\u5242\u6765\u4fc3\u8fdbPEM\u7535\u89e3\u69fd\u7684\u5de5\u4e1a\u5e94\u7528\uff0c\u800c\u4e14\u8fd8\u63d0\u51fa\u4e86\u4e00\u79cd\u4f7f\u7528\u626d\u5e94\u53d8\u7eb3\u7c73\u7ed3\u6784\u50ac\u5316\u5242\u6765\u63d0\u9ad8\u7535\u5316\u5b66\u548c\u5176\u4ed6\u50ac\u5316\u53cd\u5e94\u7684\u50ac\u5316\u6d3b\u6027\u7684\u65b0\u7b56\u7565\u3002<\/p>\n
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