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首页> 外文期刊>International Journal of Electrochemical Science >The Comparison of Carbon Conductive Additives with Different Dimensions on the Electrochemical Performance of LiFePO4 Cathode
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The Comparison of Carbon Conductive Additives with Different Dimensions on the Electrochemical Performance of LiFePO4 Cathode

机译：不同尺寸对LiFepo 4 阴极电化学性能的碳导电添加剂的比较

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Carbon black, multi-walled carbon nanotubes and graphene nanosheets were respectively added toLiFePO4 particles as conductive additives to investigate the influence on the electrochemicalperformance. The specific surface area and pore size distribution of LiFePO4 particles were measuredby N2 absorption. The microstructure of carbon conductors and LiFePO4 sample were characterized byX-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy,respectively. The results of electrochemical measurements indicated that LiFePO4 mixed withgraphene nanosheets exhibited the best electrochemical performance, of which the specific capacity-1 -1 was up to 146 mAh g at 0.1 C and 125 mAh g at 1 C. Graphene nanosheets showed plane-to-pointelectric contact with LiFePO4 particles, owing to the unique two-dimensional planar structure. In thiswork, it was demonstrated that graphene nanosheets will be the most promising carbon conductiveadditives in cathode materials for lithium-ion batteries.
机译：炭黑，多壁碳纳米管和石墨烯纳米片分别作为导电添加剂分别作为导电添加剂来研究对电化学性能的影响。测量LiFePO4颗粒的比表面积和孔径分布，N 2吸收。碳导体和LiFePO4样品的微观结构分别表征分别是氧化射线衍射，扫描电子显微镜和高分辨率透射电子显微镜。电化学测量结果表明，LiFePO4混合的纳米烯烯片显示出最佳的电化学性能，其中特定的容量-1-1在0.1c和125mAhg下在1℃下的125mAhg，图1℃下表现出平面为 - 由于独特的二维平面结构，与Lifepo4颗粒的电点电接触。在这方面，据证明石墨烯纳米片将是用于锂离子电池的阴极材料中最有前景的碳传导剂。

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