李桐

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:昆士兰科技大学

学位:博士

所在单位:力学与航空航天学院

学科:固体力学. 计算力学. 航空航天力学与工程

办公地点:工程力学系511房间

联系方式:0411-84706036

电子邮箱:tong@dlut.edu.cn

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Understanding of Anion Transport in Polymer Electrolytes for Supercapacitors

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论文类型:期刊论文

第一作者:Li, Tong

合写作者:Hu, Jingzhi,Wei, Bingqing

发表时间:2019-02-01

发表刊物:ADVANCED THEORY AND SIMULATIONS

收录刊物:SCIE

卷号:2

期号:2

关键字:anions; iffusion; molecular dynamics; polymer electrolytes; supercapacitors

摘要:Polymer electrolytes are critical to solid-state energy storage devices because of their electrical/mechanical/thermal stability. The energy storage mechanisms of supercapacitors call for a higher degree of anion transports in the polymer electrolytes. Therefore, the improvement of anions transport is critical to the performance of supercapacitors. However, the underlying transport mechanisms of different anions in the polymer electrolyte system has rarely been studied. In the present study, by molecular modeling, it is understood and demonstrated that different anions adapt to different transfer mechanisms in the polymer electrolytes during the charging/discharging process, allowing one to tune the anion transport by either adjusting the polymer structures or change the anion types. For the H2SO4-poly(vinyl alcohol) (PVA)-based system, the diffusion of anions is more significant, while the H3PO4-PVA system relies on the alignment of anions to the electrical field. The fundamental understanding will guide polymer electrolyte design for the solid-state energy storage devices.