刘旭东
,
邹智敏
,
曹小明
,
张洪延
,
张劲松
材料研究学报
用有限元方法分析了铅酸蓄电池用三维网络碳化硅板栅和极板内电流的分布.
结果表明, 与常规板栅相比, 三维网络碳化硅板栅与极板内电流分布比较均匀.
极耳的形状和位置对板栅和极板内电流分布的影响很大, 当极耳具有夹心结构时,
电流分布的均匀性有非常明显的改善, 尤其是在厚度方向具有类似三明治的极耳夹心结构时,
板栅和极板内的电流分布极为均匀, 且电流的数值比较小.
关键词:
无机非金属材料
,
lead-acid battery
,
three-dimensional networks
,
current distribution
Z.M.Zou
,
X.M.Cao
,
C.Tian
,
J.S.Zhang
金属学报(英文版)
The possibility of using Pb-electroplated reticulated SiC as the positive current collector for lead-acid batteries was investigated. Reticulated SiC with two aperture sizes (3 and 2ram) were tested as the substrate of positive electrode. It was found that the reticulated SiC has an excellent corrosion resistance in H2SO4 solution, and the Pb layer electroplated on reticulated SiC showed analogous electrochemical behavior to metal Pb. Preliminary test of the battery performance indicated that the utilization efficiency of the positive active mass of new designed batteries are improved compared with the conventional batteries. The improvement could be ascribed to the high specific surface area of the reticulated structured positive current collector, which was further supported by the even better performance of the battery made from a smaller aperture size (2ram) reticulated SiC as the substrate of the positive electrode.
关键词:
lead-acid battery
,
null
,
null
郑传波
,
屈浩洋
,
程文华
,
邢少华
,
王巍
腐蚀与防护
doi:10.11973/fsyfh-201608016
某汽车用铅酸蓄电池的汇流条发生失效现象,在连接电池正极的部位出现暗黄色物质,而且在圆孔周围有融化、变形的现象.通过爬酸试验模拟汇流条失效过程;利用激光共聚焦显微镜观察截面形貌;利用扫描电镜(SEM)、能谱(EDS)、X射线衍射(XRD)和傅里叶红外光谱(FT-IR)等方法观察分析了黄色物质.结果表明:黄色物质主要为PbO和PbSO4,汇流条正极融化、变形现象是由充放电过程产生的热量造成的.为预防安全隐患,充电电流不能过大,充电时间不能过长.
关键词:
铅酸蓄电池
,
汇流条
,
失效
