|Title:||All-vanadium redox flow batteries with graphite felt electrodes treated by atmospheric pressure plasma jets||Authors:||Chen J.-Z.
|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.
|Appears in Collections:||應用力學研究所|
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