材料科学
表面改性
复合材料
复合数
涂层
蒸发
钒
流动电池
碳纤维
电池(电)
化学工程
物理
工程类
热力学
功率(物理)
冶金
量子力学
作者
Zhenhao Liu,Baoguo Wang,Lei Yu
标识
DOI:10.1016/j.jechem.2018.04.010
摘要
The performance of vanadium flow batteries (VFBs) is closely related to the materials used in the bipolar plates. Carbon-based composite bipolar plates are particularly suitable for VFB applications. However, most original preparation methods cannot simultaneously achieve good electrical conductivity and mechanical performance. In this paper, we propose a novel approach to fabricating bipolar plates with carbon plastic materials, including four steps, namely coating a poly (vinylidene fluoride) (PVDF) solution onto carbon felt, solvent evaporation, hot-pressing, and surface modification. The resulting bipolar plates showed high conductivity, good mechanical strength, and corrosion resistance. Surface modification by coating with carbon nanotubes (CNTs) removed the PVDF-rich layer from the surface of the carbon fibers. The high surface area of the CNT withdrew PVDF resin from the carbon fiber surface, and promoted the formation of a conductive network. The flexibility and battery charge-discharge cycle measurements showed that the composite bipolar plates can meet requirements for VFB applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI