摘要
利用千瓦级全钒液流电池（VRB）模块，考察了电流密度和温度等因素对VRB输出性能的影响。在1．000～1．550V的单体电池工作电压区间内，充电电流密度对容量的影响比放电电流密度大。随着温度从25℃降低至-5℃，VRB的极化从20mV／20mA·cm^2增加到40mV／20mA·cm^2；以80mA／cm^62和40mA／cm^2循环时，能量效率降低率分别约为0．32％／℃和0．06％／℃。
The effects of the current density and temperature on the output performance of vanadium redox flow battery （VRB） were investigated using a kW class VRB stack. In the working voltage range （ 1.000 - 1.550 V for a single cell）, the effect of charge current density on capacity was larger than that of discharge current density. When the temperature decreased from 25 ℃ to - 5 ℃, the polarization of VRB increased from 20 mV/20 mA·cm^2 to 40 mV/20 mA·cm^2. The decreasing rates of energy efficiency were 0.32%/℃ and 0.06%/℃ when cycled at 80 mA/cm^2 and 40 mA/cm^2 ,respectively.
出处
《电池》
CAS
CSCD
北大核心
2009年第6期297-300,共4页
Battery Bimonthly
基金
国家科技部863项目(2006AA05Z255)
关键词
全钒液流电池(VRB)
放电特性
温度特性
vanadium redox flow battery（VRB）
discharge characteristic
temperature characteristic
