{"id":686,"date":"2022-09-27T10:20:51","date_gmt":"2022-09-27T02:20:51","guid":{"rendered":"https:\/\/www.hyybattery.net\/?p=686"},"modified":"2022-09-27T10:22:14","modified_gmt":"2022-09-27T02:22:14","slug":"686","status":"publish","type":"post","link":"https:\/\/www.hyybattery.net\/686.html","title":{"rendered":"\u9884\u9502\u5316\u5bf9\u9502\u79bb\u5b50\u7535\u6c60\u5faa\u73af\u7a33\u5b9a\u6027\u5f71\u54cd\u7684\u673a\u7406\u7814\u7a76\u3010\u8f6c\u8f7d\u3011"},"content":{"rendered":"\n

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\u3010\u5185\u5bb9\u8868\u8ff0\u3011<\/h2>\n\n\n\n

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\"640\"
640<\/figcaption><\/figure>\n\n\n\n

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\u9884\u9502\u5efa\u8bae\uff1a<\/h2>\n\n\n\n

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\"640
640 (1)<\/figcaption><\/figure>\n\n\n\n

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\"640
640 (2)<\/figcaption><\/figure>\n\n\n\n

Fig 2. \u7845\u8d1f\u6781\/\u9884\u9502\u7845\u8d1f\u6781\u6d3b\u6027\u9502\u635f\u8017\u7684\u793a\u610f\u56fe\u3002\u7ea2\u8272\u5757\u548c\u84dd\u8272\u5757\u5206\u522b\u8868\u793a\u6b63\u6781\u548c\u8d1f\u6781\u5185\u7684\u6d3b\u6027\u9502\u3002\u767d\u8272\u5757\u4f53\u548c\u9ed1\u8272\u5757\u4f53\u5206\u522b\u4ee3\u8868\u672a\u542b\u9502\u6d3b\u6027\u6750\u6599\u548c\u5931\u6d3b\u7684\u542b\u9502\u6d3b\u6750\u6599\u3002<\/p>\n\n\n\n

\u9884\u9502\u5316\u63d0\u9ad8\u4e86\u5168\u7535\u6c60\u7684ICE\uff0c\u540c\u65f6\u4e0d\u53ef\u907f\u514d\u5730\u52a0\u5267\u4e86\u9502\u5316\u8d1f\u6781\u5185\u90e8\u7684\u9502\u5316\u7a0b\u5ea6\uff0c\u8fd9\u610f\u5473\u7740\u4f1a\u5f62\u6210\u66f4\u591a\u7684Li15<\/sub>Si4<\/sub>(\u56fe2)\u3002Li15<\/sub>Si4<\/sub>\u542b\u91cf\u7684\u589e\u52a0\u4e25\u91cd\u6311\u6218\u4e86SEI\u7684\u7ed3\u6784\u7a33\u5b9a\u6027\u4ee5\u53ca\u540e\u7eed\u7684\u5faa\u73af\u7a33\u5b9a\u6027\uff0c\u5c24\u5176\u662f\u5728\u9897\u7c92\u76f4\u5f84\u8d85\u8fc7150 nm\u7684Si\u8d1f\u6781\u4e2d\u3002\u5176\u4e2d\uff0c\u7535\u5316\u5b66\u53cd\u5e94\u50a8\u5b58\u7684\u5e94\u53d8\u80fd\u548c\u76f8\u5bf9\u4e0d\u5747\u5300\u7684\u9502\u5316\u4f1a\u5728\u9897\u7c92\u8868\u9762\u5f62\u6210\u8f83\u5927\u7684\u5e94\u529b\u3002\u5982\u679cSEI\u65ad\u88c2\u97e7\u6027\u4e0d\u80fd\u627f\u53d7Li15<\/sub>Si4<\/sub>\u589e\u52a0\u6240\u5f15\u8d77\u7684\u5e94\u529b\uff0c\u5219\u7531\u4e8eSEI\u91cd\u5efa\u548c\u9502\u5316\u6750\u6599\u63a5\u89e6\u5931\u6548\u9020\u6210\u7684\u9502\u635f\u5931\u5c06\u4f1a\u589e\u52a0\u3002\u5728\u540e\u7eed\u5faa\u73af\u4e2d\uff0c\u7531\u4e8e\u7b2c\u4e00\u6b21\u5faa\u73af\u4e2d\u6d3b\u6027\u7269\u8d28\u7684\u635f\u5931\uff0c\u9884\u9502\u5316\u8d1f\u6781\u7684\u9502\u5316\u7a0b\u5ea6\u6bd4\u672a\u9884\u9502\u5316\u8d1f\u6781\u66f4\u6df1\uff0c\u5bfc\u81f4\u5faa\u73af\u6027\u80fd\u6076\u5316(\u89c1\u56fe3)\u3002\u5982\u56fe3a\u6240\u793a\uff0c\u9884\u9502\u5316SiOx\/NCA\u5168\u7535\u6c60\u7684\u5faa\u73af\u7a33\u5b9a\u6027\u660e\u663e\u6076\u5316\uff0c100\u6b21\u5faa\u73af\u540e\u7684\u5bb9\u91cf\u4fdd\u6301\u7387\u753176.97%\u4e0b\u964d\u523061%\u3002\u540c\u6837\u7684\u60c5\u51b5\u4e5f\u51fa\u73b0\u5728\u5176\u4ed6\u7cfb\u7edf\u4e2d\uff0c\u5982\u9884\u9502\u5316SiO\/NMC622\u5168\u7535\u6c60.\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0a\u8ff0\u7684\u9884\u9502\u7535\u6c60\u5927\u90e8\u5206\u90fd\u6ca1\u6709\u4f7f\u521d\u59cb\u653e\u7535\u5bb9\u91cf\u6700\u5927\u5316\uff0c\u8fd9\u8bf4\u660e\u9884\u9502\u53ea\u662f\u8865\u507f\u4e86\u521d\u59cb\u5faa\u73af\u65f6\u7684\u9502\u635f\u5931\u3002\u8fd9\u4e9b\u8d1f\u6781\u4e2d\u6ca1\u6709\u989d\u5916\u7684\u9502\u5e93\u5b58\u3002\u5373\u4f7f\u901a\u8fc7\u589e\u52a0\u9884\u8f7d\u9502\u91cf\u6765\u589e\u52a0\u9502\u5e93\u5b58\uff0c\u9502\u635f\u5931(\u7531\u4e8e\u9502\u5316\u7a0b\u5ea6\u66f4\u6df1)\u548c\u9502\u8865\u507f(\u989d\u5916\u7684\u9502\u5e93\u5b58)\u4e4b\u95f4\u7684\u7ade\u4e89\u4e5f\u4f1a\u4f7f(\u9884\u9502\u5316\u540e)\u7684\u5faa\u73af\u7a33\u5b9a\u6027\u53d8\u5f97\u4e0d\u53ef\u9884\u6d4b\uff0c\u56e0\u4e3a\u9502\u5e93\u5b58\u540c\u65f6\u4f1a\u4ea7\u751f\u66f4\u591a\u7684\u6d3b\u6027\u9502\u635f\u5931\u3002<\/p>\n\n\n\n

\"640
640 (3)<\/figcaption><\/figure>\n\n\n\n

Fig 3. (a) SiO\/NMC 622\u7684\u5bb9\u91cf\u4fdd\u6301\u7387\u548c\u5e93\u4ed1\u6548\u7387\u3002\u9884\u9502\u5316\u540e\uff0c\u7535\u6c60\u7684\u5faa\u73af\u6027\u80fd\u4e0b\u964d\u3002(b) LiFePO4<\/sub>\/ Si-C\u548cLiFePO4<\/sub> (Li2<\/sub>S)\/ Si-C\u5168\u7535\u6c60\u7684\u5bb9\u91cf\u4fdd\u7559\u548c\u5e93\u4ed1\u6548\u7387\u3002\u9884\u9502\u5316\u540e\u7535\u6c60\u7684\u5faa\u73af\u6027\u80fd\u660e\u663e\u63d0\u9ad8\u3002<\/p>\n\n\n\n

\u9884\u9502\u5efa\u8bae\uff1a<\/h2>\n\n\n\n

a) \u9002\u5f53\u8c03\u6574N\/P\u6bd4\u548c\u9502\u5316\u7a0b\u5ea6\u3002\u5f53\u4f7f\u7528Si\u8d1f\u6781\u65f6\uff0cN\/P\u6bd4\u8d8a\u5c0f\uff0c\u8d1f\u6781\u7684\u9502\u5316\u8d8a\u6df1\uff0c\u9884\u9502\u5316\u540eLi15Si4\u7684\u5f62\u6210\u8d8a\u591a\u3002\u8f83\u9ad8\u7684N\/P\u6bd4\u53ef\u4ee5\u964d\u4f4e\u8d1f\u6781\u7684\u9502\u5316\u7a0b\u5ea6\uff0c\u9002\u5f53\u589e\u52a0\u9884\u8f7d\u9502\u91cf\u4f1a\u5728\u8d1f\u6781\u5f62\u6210\u591a\u4f59\u7684\u9502\u5e93\u5b58\u3002\u7531\u4f53\u79ef\u53d8\u5316\u66f2\u7ebf\u4e0e\u6bd4\u5bb9\u91cf\u7684\u5173\u7cfb\u53ef\u77e5\uff0c\u5728\u6bd4\u5bb9\u91cf\u4e3a2000 mAh\/g\u65f6\uff0c\u63a7\u5236\u7845\u8d1f\u6781\u7684\u9502\u5316\u72b6\u6001\uff0c\u4e0e\u5b8c\u5168\u9502\u5316\u7684\u7845\u76f8\u6bd4\uff0c\u53ef\u4ee5\u663e\u8457\u51cf\u5c0f\u4f53\u79ef\u53d8\u5316\uff0c\u8fdb\u800c\u53ef\u5927\u5927\u964d\u4f4e\u9502\u5e93\u5b58\u7684\u8017\u7aed\u7387\uff0c\u63d0\u9ad8\u5faa\u73af\u7a33\u5b9a\u6027\u3002<\/p>\n\n\n\n

b) \u4f18\u5316SEI\u7684\u7ec4\u5206\u548c\u7ed3\u6784\u3002SEI\u7684\u4f18\u5316\u9700\u8981\u7efc\u5408\u8003\u8651\u754c\u9762\u5904\u6d89\u53ca\u5230\u7684\u56e0\u7d20\uff0c\u5373\u7845\u9897\u7c92\u3001\u7c98\u7ed3\u5242\u548c\u7535\u89e3\u8d28\u3002\u5176\u4e2d\uff0c\u7535\u89e3\u6db2\u7684\u8bbe\u8ba1\u662f\u5b9e\u73b0\u826f\u597dSEI\u548c\u589e\u5f3a\u65ad\u88c2\u97e7\u6027\u7684\u5173\u952e\u3002\u51e0\u79cd\u57fa\u4e8e\u667a\u80fd\u7535\u89e3\u8d28\u8bbe\u8ba1\u7684\u589e\u5f3a\u578bSEI\uff0c\u5982Nanda\u7b49\u4eba\u62a5\u9053\u7684\u5f39\u6027\u805a\u919a\u5bcc\u5316SEI\uff0c Chen\u7b49\u4eba\u7684\u57fa\u4e8eLiF\u7684SEI\uff0c\u53ef\u4ee5\u5728\u5faa\u73af\u65f6\u4fdd\u6301\u7ed3\u6784\u7684\u5b8c\u6574\u6027\uff0c\u6709\u6548\u63d0\u9ad8Si\u7684\u5faa\u73af\u7a33\u5b9a\u6027\u3002SEI\u7ed3\u6784\u7a33\u5b9a\u6027\u7684\u63d0\u9ad8\u53ef\u4ee5\u4fdd\u62a4Si\u514d\u53d7\u4e25\u91cd\u7684\u65ad\u88c2\uff0c\u907f\u514d\u4e86\u6d3b\u6027\u9502\u635f\u5931\u5e26\u6765\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n

\uff083\uff09\u590d\u5408\u578b\u8d1f\u6781<\/h2>\n\n\n\n

\u7845(SiOx)-\u77f3\u58a8\u662f\u73b0\u4ee3\u5de5\u4e1a\u4e2d\u5e94\u7528\u6700\u5e7f\u6cdb\u7684\u590d\u5408\u8d1f\u6781\u6750\u6599\u4e4b\u4e00\uff0c\u9884\u9502\u5316\u5bf9\u8fd9\u4e9b\u6750\u6599\u5b9e\u73b0\u66f4\u9ad8\u7684\u80fd\u91cf\u5bc6\u5ea6\u81f3\u5173\u91cd\u8981\u3002\u9664\u6df1\u5ea6\u9502\u5316\u5f15\u8d77\u7684\u4f53\u79ef\u53d8\u5316\u5916\uff0c\u9502\u5728\u9502\u5316\u8d1f\u6781\u4e2d\u7684\u5206\u5e03\u5bf9\u5faa\u73af\u7a33\u5b9a\u6027\u4e5f\u6709\u663e\u8457\u5f71\u54cd\u3002\u5728\u8be5\u590d\u5408\u4f53\u7cfb\u4e2d\uff0c\u9884\u9502\u5316\u540e\u7684\u9502\u8865\u507f\u548c\u6d88\u8017\u4e4b\u95f4\u7684\u7ade\u4e89\u66f4\u4e3a\u590d\u6742\uff0c\u56e0\u4e3a\u77f3\u58a8\u7684\u9502\u5316\u52bf\u63a5\u8fd1Li15<\/sub>Si4<\/sub>\u7684\u5f62\u6210\u7535\u52bf(\u7ea690-100 mV)\u3002\u6700\u8fd1\uff0c\u901a\u8fc7\u56fa\u4f53\u6838\u78c1\u5171\u632f\uff0c\u6211\u4eec\u8ffd\u8e2a\u4e86\u9884\u9502\u5316\u524d\u540e(\u4ece\u5145\u6ee1\u7535\u7684\u7535\u6c60\u4e2d\u53d6\u51fa)\u9502\u5316SiOx<\/sub> -\u77f3\u58a8\u590d\u5408\u8d1f\u6781\u4e2d\u6d3b\u6027\u9502\u5206\u5e03\u7684\u6f14\u53d8\u3002\u4e0e\u672a\u9884\u9502\u5316\u8d1f\u6781\u76f8\u6bd4\uff0c\u9884\u9502\u5316\u8d1f\u6781\u4e2dLiCx<\/sub>\u548cLi15<\/sub>Si4<\/sub>\u7684\u6bd4\u4f8b\u540c\u65f6\u663e\u8457\u589e\u52a0\u3002\u7531\u4e8e\u77f3\u58a8\u5177\u6709\u826f\u597d\u7684\u53ef\u9006\u6027\uff0c\u589e\u52a0\u7684LiCx<\/sub>\u4e2d\u9502\u7684\u989d\u5916\u5b58\u50a8\u6709\u5229\u4e8e\u5ef6\u957f\u5faa\u73af\u5bff\u547d\u3002\u7136\u800c\uff0c\u5982\u524d\u6240\u8ff0\uff0cLi15<\/sub>Si4<\/sub>\u662f\u7535\u6781\u53d8\u5f62\u7684\u4e3b\u8981\u6765\u6e90\uff0c\u5bfc\u81f4SEI\u65ad\u88c2\u548c\u6d3b\u6027\u6750\u6599\u63a5\u89e6\u5931\u6548\u3002\u5728\u5f62\u6210\u7535\u4f4d\u63a5\u8fd1\u5f15\u8d77\u7684\u77f3\u58a8\u5229\u7528\u4e0d\u5145\u5206\u7684\u60c5\u51b5\u4e0b\uff0cLi15<\/sub>Si4<\/sub>\u7684\u589e\u52a0\u5bf9\u6574\u4f53\u5faa\u73af\u6027\u80fd\u662f\u6781\u5176\u4e0d\u5229\u7684\u3002\u6240\u4ee5\uff0c\u57fa\u4e8e\u8fd9\u79cd\u590d\u6742\u7684\u5f71\u54cd\uff0c\u9884\u9502\u5316\u4f7f\u5f97\u590d\u5408\u8d1f\u6781\u7684\u5168\u7535\u6c60\u7684\u5faa\u73af\u7a33\u5b9a\u6027\u5448\u73b0\u51fa\u4e0d\u540c\u7684\u8d8b\u52bf\u3002<\/p>\n\n\n\n

\u9884\u9502\u5efa\u8bae\uff1a<\/h2>\n\n\n\n

a) \u7ec4\u5206\u6bd4\u4f8b\u7684\u8c03\u6574\u3002\u5e94\u63d0\u9ad8\u8d1f\u6781\u7684\u6bd4\u5bb9\u91cf\uff0c\u540c\u65f6\u63d0\u9ad8N\/P\u6bd4\u3002\u968f\u7740N\/P\u6bd4\u7684\u589e\u5927\uff0c\u9002\u5f53\u589e\u52a0\u7845\u6216SiO\u7684\u6bd4\u4f8b\uff0c\u53ef\u4ee5\u964d\u4f4e\u7845\u7684\u9502\u5316\u7a0b\u5ea6\uff0c\u4ece\u800c\u51cf\u5c11\u7845\u7684\u4f53\u79ef\u53d8\u5f62\u3002\u56e0\u6b64\uff0c\u7531\u4e8e\u6d3b\u6027\u9502\u635f\u5931\u7684\u51cf\u5c11\u548c\u589e\u52a0\u7684\u9502\u5e93\u5b58\u7684\u8d21\u732e\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5faa\u73af\u7a33\u5b9a\u6027\u7684\u6709\u6548\u63d0\u5347\u3002<\/p>\n\n\n\n

b) \u5f00\u53d1\u6709\u6548\u5206\u79bbLiCx<\/sub>\u548cLi15<\/sub>Si4<\/sub>\u7684\u9502\u5316\u7535\u4f4d\u7684\u65b9\u6cd5\u3002\u63d0\u9ad8\u9ad8\u53ef\u9006\u77f3\u58a8\u7684\u5229\u7528\u7387\uff0c\u51cf\u5c11Li15<\/sub>Si4<\/sub>\u7684\u7528\u91cf\uff0c\u5bf9\u4f18\u5316\u590d\u5408\u8d1f\u6781\u7684\u5faa\u73af\u6027\u80fd\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002\u4f8b\u5982Sun \u7b49\u4eba\u63d0\u51fa\u7684LiF\u8bf1\u5bfc\u7684\u9009\u62e9\u6027\u9502\u5316\u7b56\u7565\u6765\u5206\u79bbLiCx<\/sub>\u548cLi15<\/sub>Si4<\/sub>\u7684\u5f62\u6210\u52bf(\u56fe4)\u3002\u7531\u4e8eLiF\u548c\u6d3b\u6027\u6750\u6599(Si\u3001SiO\u548c\u77f3\u58a8)\u4e4b\u95f4\u7684\u754c\u9762\u5206\u79bb\u80fd(Wsep<\/sub>\uff0c\u5206\u79bb\u7684\u7406\u60f3\u529f\uff0c\u5b83\u6a21\u62df\u4e86\u754c\u9762\u5728\u771f\u7a7a\u4e2d\u7406\u60f3\u5206\u79bb\u6210\u4e24\u4e2a\u8868\u9762\u6240\u9700\u7684\u80fd\u91cf)\u7684\u5dee\u5f02\uff0cLiF\u53ef\u4ee5\u4f18\u5148\u539f\u4f4d\u805a\u96c6\u5728\u5c40\u90e8Si@SiOx<\/sub>\u7c92\u5b50\u4e0a\u3002\u79bb\u5b50\u5bfc\u7535\u6027\u548c\u7535\u5b50\u5bfc\u7535\u6027\u8f83\u5dee\u7684LiF\u51cf\u7f13\u4e86Si@SiOx<\/sub>\u7c92\u5b50\u7684\u9502\u5316\u52a8\u529b\u5b66\uff0c\u4f7fLi15<\/sub>Si4<\/sub>\u5728\u8f83\u4f4e\u7684\u7535\u4f4d\u4e0b\u5f62\u6210\uff0c\u663e\u8457\u63d0\u9ad8\u4e86\u77f3\u58a8\u7684\u5229\u7528\u7387\uff0c\u51cf\u5c11\u4e86Li15<\/sub>Si4<\/sub>\u7684\u7528\u91cf\u3002\u7ed3\u679c\u8868\u660e\uff0c\u901a\u8fc7\u5c06\u77f3\u58a8\u7684\u9ad8\u53ef\u9006\u9502\u5b58\u50a8\u80fd\u529b\u4ece\u5197\u4f59\u5bb9\u91cf\u4e2d\u89e3\u653e\u51fa\u6765\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u9884\u9502\u5316Si@SiOx<\/sub>\/C\u590d\u5408\u8d1f\u6781\u7684\u5faa\u73af\u7a33\u5b9a\u6027\u3002\u5728\u8d85\u9ad8\u9762\u79ef\u5bb9\u91cf(NCA\/S450, 4.9 mAh\/cm2<\/sup>)\u7684\u5168\u7535\u6c60\u6f14\u793a\u4e2d\uff0c300\u6b21\u5faa\u73af\u540e\u5bb9\u91cf\u4fdd\u6301\u7387\u53ef\u4ece85%\u663e\u8457\u63d0\u9ad8\u523094.2%\u3002<\/p>\n\n\n\n

\"640
640 (3)<\/figcaption><\/figure>\n\n\n\n

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