Low temperature hydrothermal synthesis and electrochemical performances of LiFePO_4 microspheres as a cathode material for lithium-ion batteries

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 年，卷（期）: 2012,（32）
• 页码范围: 4164-4169
• 页数: 6页
• 分类号: TM912
• 语种: 中文

摘要

Mesoporous LiFePO4 microspheres were simply synthesized by a low temperature(130℃),template-free hydrothermal route using low cost LiOH,Fe(NO3)3 and NH4H2PO4 as starting raw materials.These microspheres are composed of densely aggregated LiFePO4 nanoparticles and filled with interconnected mesochannels,which demonstrates not only a high tap density(≥1.4 g cm-3),a high capacity of 150 mAh g-1(~90% of its theoretical capacity) at 0.5 C rate,but also a ≥ 80% utilization of its theoretical capacity at a high rate of 1 C.In addition,the hydrothermal synthesis developed in this work is simple and cost-effective,it may provide a new route for production of the LiFePO4 material in battery applications.