活性炭物理参数对铅炭电池的影响  

Effect of physical parameters of activated carbon on lead-carbon battery

作　　者：孙德龙[1] 胡晨[2] 汪浩[1] 金翼[2] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100124 [2]中国电力科学研究院新能源与储能运行控制国家重点实验室,北京100192

出　　处：《电池》2017年第5期281-285,共5页Battery Bimonthly

基　　金：国家电网公司科技项目(DG71-17-009);北京市教委科技计划项目(KZ20171005009)

摘　　要：通过化学活化法制备不同比表面积、不同孔径分布的活性炭,并制备铅炭复合电极和铅炭电池。添加活性炭C4-5h、C5-5h和C6-5h(比表面积分别为:1 361.1 m^2/g、1 638.5 m^2/g和1 390.1 m^2/g,其中,C4-5h孔径分布比较集中,C5-5h和C6-5h孔径分布相对分散)的铅炭电池,在到达1.8 V的下限电压之前分别完成了35 843次、30 174次和25 500次循环。C4-5h可抑制Pb SO4晶体的积累长大,而C5-5h、C6-5h可缓解Pb SO4晶体在负极极板表面紧密堆积的问题。3种活性炭均可提高电池的循环性能。Activated carbons with different specific surface area and different pore size distribution were prepared by chemical activation method, then lead-carbon composite electrode and lead-carbon battery were prepared. The lead carbon battery, which contained activated carbon C4-Sh,C5-5h and C6-5h （The specific surface area were 1 361.1 m2/g,1 638.5 m2/g,1 390. 1 m2/g, among which CA-5h pore size distribution was concentrated, C5-5h and C6-5h pore size distribution was relatively dispersed. ） completed 35 843 cycles, 30 174 cycles and 25 500 cycles before the voltage reached the lower limit voltage respectively. After watching the electrode material by scanning electron microscopy, it was found that the accumulation of PbSO4 crystals could be inhibited by C4-5h. The problem of PbSO4 crystals arranged on the surface of the negative electrode plate closely could be solved by C5-5h and C6-5h. The cycle performance of lead-carbon batteries was enhanced by all three kinds of activated carbon.

关 键 词：铅炭电池 活性炭 物理参数 循环性能 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动]