期刊
JOURNAL OF POWER SOURCES
卷 307, 期 -, 页码 208-213出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.01.006
关键词
Electrode fabrication; Supercapacitor; Stacked bipolar electrolyser; Electrodeposition; Conducting polymer; Half electrolysis
资金
- NSFC [21403119]
- Research Sandpit Award (Univeristy of Nottingham Ningbo)
- Fundamental Research Funds for Central Universities of China
- Engineering and Physical Sciences Research Council [GR/R68078/02, EP/J000582/1, EP/F026412/1, GR/R68078/01] Funding Source: researchfish
- EPSRC [EP/J000582/1, EP/F026412/1] Funding Source: UKRI
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 super capacitor 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. (C) 2016 Elsevier B.V. All rights reserved.
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