煅烧
聚乙烯吡咯烷酮
材料科学
锂(药物)
化学工程
电极
粒径
微尺度化学
降水
碳纤维
分析化学(期刊)
纳米技术
化学
复合材料
色谱法
复合数
有机化学
物理化学
气象学
催化作用
数学教育
内分泌学
高分子化学
医学
工程类
数学
物理
作者
Sung Woo Oh,Seung‐Taek Myung,Seungmin Oh,Chong Seung Yoon,Khalil Amine,Yang‐Kook Sun
标识
DOI:10.1016/j.electacta.2009.10.007
摘要
Carbon-coated LiFePO4 (C-LiFePO4) with micron particle size (6 μm) and high tap density (1.6 g cm−3) was prepared from spherical FePO4·2H2O powder via the co-precipitation method. The C-LiFePO4 powder was calcined at temperatures between 650 and 800 °C. The 6 μm C-LiFePO4 prepared at 800 °C exhibited an excellent rate capability, delivering 150 mAh g−1 on discharge at the 0.1 C-rate and 108 mAh g−1 at the 5 C-rate. The volumetric capacity of the 6 μm C-LiFePO4 corresponded to 225 mAh cm−3, since the large secondary particles (6 μm) C-LiFePO4 sufficiently allowed tight packing of the particles. The 6 μm C-LiFePO4 powder with high tap density makes an attractive positive electrode candidate for lithium-ion batteries designed for high energy density.
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