半固态LiFePO_4液流电池的研究与制备  

Research and fabrication of semi-solid LiFePO_4 flow batteries

作　　者：高静[1,2] 陈剑 衣宝廉[1] GAO Jing;CHEN Jian;YI Bao-lian(Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Liaoning Dalian 116023,China;University of chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院大学,北京100049

出　　处：《电源技术》2018年第11期1690-1693,共4页Chinese Journal of Power Sources

摘　　要：半固态锂离子液流电池兼具锂离子电池的高比能量和液流电池的容量、功率可独立设计的优点,电池的活性物质悬浮于电解液中,因此,电池内部高效的电子传导成为实现电池反应的关键之一。通过优化电池的集流体、导电剂等研制了比能量为85 Wh/kg的半固态LiFePO_4液流电池。同时,还研究、分析和阐述了影响半固态LiFePO_4电池性能的各个关键因素的作用机制。Semi-solid lithium-ion flow batteries combine the advantages of high energy density of lithium-ion batterieswith the advantages of the independent design of capacity and power originated from redox flow batteries. In asemi-solid lithium-ion flow battery, the cathodic and anodic active particles are suspended respectively in thecathodic and anodic electrolyte, on which the electrochemical reactions are occurred. The facile transferring ofelectrons among the active particles and between the active particles and the current collector is one of the keyfactors for efficient electrode reactions. In this paper, a semi-solid LiFePO4 flow battery with high energy density of 85Wh/kg was fabricated by optimizing the current collector and the electronic conductive carbon blacks. Meanwhile, thekey factors that influenced the performance of the semi-solid LiFePO4 battery were investigated.

关 键 词：半固态锂离子液流电池 磷酸亚铁锂 电导率 集流体 导电炭黑 

分 类 号：TM912[电气工程—电力电子与电力传动]