铅酸蓄电池正极活性物质孔结构的研究  

Research on positive active material pore structure of lead-acid batteries

作　　者：邓成智 李桂发 刘玉 田庆山 余乐 李丹 施璐 郭志刚 DENG Chengzhi;LI Guifa;LIU Yu;TIAN Qingshan;YU Le;LI Dan;SHI Lu;GUO Zhigang(Tianneng Battery Group Co.,Ltd.,Changxing Zhejiang 313100;Huzhou Xiecheng Test Technology Co.,Ltd.,Changxing Zhejiang 313100,China)

机构地区：[1]天能电池集团股份有限公司,浙江长兴313100 [2]湖州协成检测科技有限公司,浙江长兴313100

出　　处：《蓄电池》2020年第3期115-119,共5页Chinese LABAT Man

摘　　要：通过分析不同硫酸亚锡添加量生极板和熟极板的正极活性物质孔结构,以及循环过程中熟极板孔结构的变化,发现了不同状态下正极活性物质的孔径分布、不同孔径的孔体积占比率与电池容量和容量衰减的关系,认为控制孔径小于0.1μm的孔向孔径3~11μm的孔生长是延长电池寿命的关键。In this paper,the pore structures of the active material in unformed plate and formed plate with different amount of tin sulfate,and the change of formed plate pore structure during the cycle test were analyzed.The pore size distribution of positive active material in different states,the relationships between the pore volume occupancy of different pore size and the battery capacity and the capacity attenuation were found.It was considered that the key factor to delay battery life was to control the growth of pore size from less than 0.1μm to 3~11μm.

关 键 词：铅酸电池 正极活性物质 孔结构 硫酸亚锡 孔径分布 容量衰减 

分 类 号：TM912.1[电气工程—电力电子与电力传动]