Nafion-sulfonated organosilica composite membrane for all vanadium redox flow battery |
| |
Authors: | Xiangguo Teng Jie Lei Xuecai Gu Jicui Dai Yongming Zhu Faqiang Li |
| |
Institution: | (1) School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, China;(2) Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, China |
| |
Abstract: | A novel Nafion-sulfonated diphenyldimethoxysilane (N-sDDS) composite membrane is prepared and employed in vanadium redox flow
battery (VRB). Ion exchange capacity, proton conductivity, water transport behavior, and the cell performances are characterized.
Fourier transform-infrared and X-ray diffraction analysis indicate that the sulfonated diphenyldimethoxysilane (sDDS) particles
are successfully introduced into the Nafion matrix. In VRB single cell test, the VRB with N-sDDS membrane exhibits nearly
the same coulombic efficiency as the unmodified Nafion membrane, but higher voltage efficiency than that of the VRB with unmodified
Nafion membrane. The VRB with N-sDDS composite membrane keeps a stable performance after 60 times charge–discharge test. In
the self-discharge test, the VRB with the N-sDDS membrane presented a lower self-discharge rate than that of the VRB with
Nafion membrane. All results show that the addition of s-DDS is a simple and efficient way to improve the conductivity of
Nafion, and the composite membrane shows good potential use for VRB. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|