Bipolarly stacked electrolyser for energy and space efficient fabrication of supercapacitor electrodes

Xiaojuan Liu, Tao Wu, Zengxin Dai, Keran Tao, Yong Shi, Chuang Peng, Xiaohang Zhou, George Z. Chen

Research output: Journal PublicationArticlepeer-review

12 Citations (Scopus)

Abstract

Stacked electrolysers with titanium bipolar plates are constructed for electrodeposition of polypyrrole electrodes for supercapacitors. The cathode side of the bipolar Ti plates are pre-coated with activated carbon. In this new design, half electrolysis occurs which significantly lowers the deposition voltage. The deposited electrodes are tested in a symmetrical unit cell supercapacitor and an asymmetrical supercapacitor stack. Both devices show excellent energy storage performances and the capacitance values are very close to the design value, suggesting a very high current efficiency during the electrodeposition. The electrolyser stack offers multi-fold benefits for preparation of conducting polymer electrodes, i.e. low energy consumption, facile control of the electrode capacitance and simultaneous preparation of a number of identical electrodes. Therefore, the stacked bipolar electrolyser is a technology advance that offers an engineering solution for mass production of electrodeposited conducting polymer electrodes for supercapacitors.

Original languageEnglish
Pages (from-to)208-213
Number of pages6
JournalJournal of Power Sources
Volume307
DOIs
Publication statusPublished - 1 Mar 2016

Keywords

  • Conducting polymer
  • Electrode fabrication
  • Electrodeposition
  • Half electrolysis
  • Stacked bipolar electrolyser
  • Supercapacitor

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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