摘要
采用原位化学聚合法制备聚吡咯(PPy)/炭黑(CB)复合材料并将其应用于铅酸电池负极中,通过扫描电子显微镜、傅立叶变换红外光谱仪、拉曼光谱仪和X射线衍射仪等表征手段分别对复合材料的微观形貌、结构和物相组成进行分析,采用电化学线性扫描法和循环伏安法测试了复合材料的电化学性能。最后,讨论了复合材料对铅酸电池的高倍率部分荷电状态(HRPSoC)循环寿命性能的影响。结果表明,PPy/CB复合材料不仅保留CB原有结构特征,而且具有更高析氢过电位性能和更高的电容性能。将PPy/CB复合材料作为负极添加剂应用于铅酸电池负极中,改善了负极析氢问题以及不可逆“硫酸盐化”问题,最终显著提高了铅酸电池的HRPSoC循环寿命,循环寿命高达7578次,比对照组的电池(负极只添加CB)提高了约109%。
The polypyrrole(PPy)/carbon black(CB)composite were prepared by in-situ oxidation polymerization on CB and applied to negative plates of lead-acid battery.The micro-morphology,structure and phase compositions of as-prepared composite were characterized by scanning electron microscope(SEM),Fourier transform infrared spectroscopy(FTIR),Raman spectroscopy(Raman)and X-ray diffraction(XRD).The electrochemical performances of the composite were analyzed by linear sweep voltammetry(LSV)and cyclic voltammetry(CV).Finally,the effect of PPy/CB composite on the high-rate partial-state-of-charge(HRPSoC)performance of lead-acid batteries was investigated.The results show that the PPy/CB composite retains the structural feature of CB,and has a higher hydrogen evolution over-potential and a larger capacitance than CB.When PPy/CB is added in negative plate to prepare lead-acid battery,it effectively slows down the hydrogen evolution and the irreversible sulfation,which greatly prolongs the cycle life under the HRPSoC operation.The cycle life of the lead-acid battery reaches 7578 times,which is improved by about 109%compared with the control battery(only CB is added to the negative plate).
作者
陈远强
Chen Yuanqiang(Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2021年第8期1-7,共7页
Engineering Plastics Application
基金
中科院STS区域重点项目(KFJ-STS-QYZD-2021-09-001)
福建省STS计划配套项目(2020T3004,2020T3030)
泉州市科技项目(2020G17)
闽都创新实验室基金项目(2021ZR137)。
关键词
聚吡咯
聚吡咯/炭黑复合材料
铅酸电池
硫酸盐化
析氢
polypyrrole
polypyrrole/carbon black composite
lead-acid battery
sulfation
hydrogen evolution
作者简介
通信作者:陈远强,高级工程师,主要从事储能材料的研究与应用。
