表面活性剂对二氧化锰性能的影响  

Influence of surfactant on performance of manganese dioxide

作　　者：张丽娟[1] 李高鹏 张伶潇 赵惠慧 ZHANG Li-juan;LI Gao-peng;ZHANG Ling-xiao;ZHAO Hui-hui(Beijing Key Laboratory for Green Catalysis and Separation,School of Environment and Energy Engineering,Beifing University of Technology,Beijing 100124,China;Penglai Yongan Human Resources Co.,Ltd.,Penglai,Shandong 265600,China)

机构地区：[1]北京工业大学环境与能源工程学院绿色催化与分离重点实验室,北京100124 [2]蓬莱市永安人力资源有限公司,山东蓬莱265600

出　　处：《电池》2018年第4期228-231,共4页Battery Bimonthly

基　　金：北京市属高校高水平教师队伍建设支持计划(IDHT20180504);北京工业大学2017年度本科重点建设课程-物理化学Ⅴ(KC2017BS020)

摘　　要：采用液相共沉淀法,分别以十二烷基硫酸钠(SDS)、十六烷基三甲基溴化铵(CTAB)和聚乙烯吡咯烷酮(PVP)为表面活性剂,制备二氧化锰(MnO_2),通过XRD、SEM、BET、傅立叶变换红外光谱(FT-IR)、倍率性能和电化学阻抗谱(EIS)测试,对样品进行分析。3种材料均为β-MnO_2,以SDS为表面活性剂制备的MnO_2晶胞参数最优、比表面积最大且电荷转移阻抗最小。在1/40 C下恒流放电至1.5 V,放电比容量为265 mAh/g,比使用PVP时高出近3倍,且阻抗最小。Manganese dioxide （ MnO2 ） with sodium dodecyl sulfate （SDS） , hexadecyl trimethyl ammonium bromide （ CTAB ） and polyvinyl pyrrolidone（PVP） as surfactant was prepared by liquid coprecipitation method. The prepared samples were analyzed by XRD, SEM, BET, Fourier transform infrared spectroscopy （FF-IR）, rate capability and electrochemical impedance spectra（EIS）. All the prepared samples were 13-MnO2. The lattice parameters of MnO2 prepared by SDS as surfactant were the best, the specific surface area was the largest and the charge transfer impedance was the smallest. The discharge capacity of MnO2 prepared by SDS as surfactant was 265 mAh/g at 1/40 C to 1.5 V,nearly 3 times higher than that of PVP. The impedance of MnO2 prepared by SDS as surfactant was the lowest.

关 键 词：二氧化锰(MnO2) 表面活性剂 电化学性能 锂锰电池 

分 类 号：TM912.9[电气工程—电力电子与电力传动]