https://scholars.lib.ntu.edu.tw/handle/123456789/425208
Title: | All-vanadium redox flow batteries with graphite felt electrodes treated by atmospheric pressure plasma jets | Authors: | Chen J.-Z. Liao W.-Y. Hsieh W.-Y. Hsu C.-C. JIAN-ZHANG CHEN |
Keywords: | All-vanadium redox flow battery;Atmospheric pressure plasma jet;Electrode;Graphite felt | Issue Date: | 2015 | Journal Volume: | 274 | Start page/Pages: | 894-898 | Source: | Journal of Power Sources | Abstract: | Graphite felts modified with atmospheric pressure plasma jets (APPJs) are applied as electrodes in an all-vanadium redox flow battery (VRFB). APPJ flow penetrates deeply into the graphite felt, improving significantly the wettability of the graphite felt inside out and, thereby, enhancing graphite fiber-electrolyte contact during battery operation. The energy efficiency of a VRFB was improved from 62% (untreated) to 76% (APPJ-treated with the scan mode) at a current density of 80 mA cm-2, an improvement of 22%. The efficiency improvement is attributed to the oxygen-containing groups and nitrogen doping introduced by N2 APPJs on the fiber surfaces of graphite felt, both of which enhance electrochemical reactivity. ? 2014 Elsevier B.V. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425208 | ISSN: | 03787753 | DOI: | 10.1016/j.jpowsour.2014.10.097 | SDG/Keyword: | Atmospheric movements; Atmospheric pressure; Electrochemical electrodes; Electrodes; Electrolytes; Energy efficiency; Felt; Felts; Graphite; Graphite electrodes; Plasma jets; Vanadium; All vanadium redox flow battery; Atmospheric pressure plasma jets; Battery operation; Efficiency improvement; Electrochemical reactivity; Electrolyte contacts; Graphite felts; Oxygen containing groups; Flow batteries |
Appears in Collections: | 應用力學研究所 |
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