| 锂离子电池Li2FeP2O7正极材料的制备及其电化学性能 |
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| 引用本文： | 孟禄超,陈庆荣,吴春桃,王骞壹,白世伟,曾令伟,刘洁群,王佳琪,钟胜奎.锂离子电池Li2FeP2O7正极材料的制备及其电化学性能[J].矿冶工程,2022,42(1):136-139. |
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| 作者姓名： | 孟禄超 陈庆荣 吴春桃 王骞壹 白世伟 曾令伟 刘洁群 王佳琪 钟胜奎 |
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| 作者单位： | 海南热带海洋学院 海洋科学与技术学院,海南 三亚 572022 |
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| 基金项目： | 海南省自然科学基金(821MS0782,221MS048,221RC585)；;国家自然科学基金(52074099,52164029)；;国家级大学生创新创业训练计划(202011100004)； |
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| 摘 要： | 采用固相球磨法制备了Li2FeP2O7/C正极材料,研究了烧结温度、碳包覆含量以及碳源对其结构、形貌以及电化学性能的影响。结果表明: 高温固相烧结合成样品的适宜温度为680 ℃,以柠檬酸为碳源、碳包覆量为5%时,合成的Li2FeP2O7/C晶型完整,晶粒较小且均匀,0.1C倍率下的放电比容量可达102.6 mAh/g,0.5C倍率下的初次放电比容量可达83.4 mAh/g,循环30次后放电比容量为80.7 mAh/g,展现了较好的循环性能以及倍率性能。
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| 关 键 词： | 锂离子电池 Li2FeP2O7 碳包覆 正极材料 Li2FeP2O7/C 固相球磨法 电化学性能 |
| 收稿时间： | 2021-08-12 |
Preparation and Electrochemical Performance of Li2FeP2O7 as Cathode Materials for Lithium-Ion Batteries |
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| MENG Lu-chao,CHEN Qing-rong,WU Chun-tao,WANG Qian-yi,BAI Shi-wei,ZENG Ling-wei,LIU Jie-qun,WANG Jia-qi,ZHONG Sheng-kui.Preparation and Electrochemical Performance of Li2FeP2O7 as Cathode Materials for Lithium-Ion Batteries[J].Mining and Metallurgical Engineering,2022,42(1):136-139. |
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| Authors: | MENG Lu-chao CHEN Qing-rong WU Chun-tao WANG Qian-yi BAI Shi-wei ZENG Ling-wei LIU Jie-qun WANG Jia-qi ZHONG Sheng-kui |
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| Affiliation: | College of Marine Science and Technology, Hainan Tropical Ocean University, Sanya 572022, Hainan, China |
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| Abstract: | The cathode material of Li2FeP2O7/C was prepared by solid-phase ball milling method, and the influences of sintering temperature, carbon coating content and carbon source on the phase structure, morphology and electrochemical properties were studied. The results indicate that the Li2FeP2O7/C appropriately synthesized at 680 ℃, with citric acid as carbon source and carbon coating content of 5%, has a complete crystal shape with smaller and uniform grain. The Li2FeP2O7/C exhibits an initial discharge capacity of 102.6 mAh/g at 0.1C rate, and an initial discharge capacity of 83.4 mAh/g at 0.5C rate, a reversible capacity of 80.7 mAh/g after 30 cycles at 0.5C, showing better cycling and rate performance. |
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| Keywords: | lithium-ion battery Li2FeP2O7 carbon coating cathode material Li2FeP2O7/C solid phase ball milling method electrochemical performance |
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