Electrochemical Aging and Characterization of Graphite-Polymer Based Composite Bipolar Plates for Vanadium Redox Flow Batteries
نویسندگان
چکیده
Three bipolar plates (BPP) comprised of a composite polypropylene or polyvinylidene fluoride polymer and varying average graphite particle size were studied for application in vanadium redox flow battery (VRFB). The BPPs electrochemically aged via 3000 cyclic voltammetry curves 1.8 M VOSO 4 + 2.0 H 2 SO electrolyte. After every 500th cycle the aging progression was determined by performing on 0.1 solution where double layer capacitance, quinone/hydroquinone species activity quantitatively evaluated. Prior to aging, extensively characterized using various physical methods. performed studies reveal that wettability, surface roughness accessible porosity significantly influence their electrochemical stability. Cycling tests single cells at constant current density 60 mA cm ?2 revealed close correlation cell efficiencies stability plates. Thus, proposed characterization method can be an effective foresight predict applicability plate battery.
منابع مشابه
Development of Integrally Molded Bipolar Plates for All-Vanadium Redox Flow Batteries
Chih-Hsun Chang 1, Han-Wen Chou 2, Ning-Yih Hsu 2 and Yong-Song Chen 1,* 1 Advanced Institute of Manufacturing with High-tech Innovations and Department of Mechanical Engineering, National Chung Cheng University, No. 168, University Rd., Minhsiung Township, Chiayi 62102, Taiwan; [email protected] 2 Institute of Nuclear Energy Research, Atomic Energy Council, No. 1000 Wenhua Rd., Jiaan Village...
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ژورنال
عنوان ژورنال: Journal of The Electrochemical Society
سال: 2022
ISSN: ['0013-4651', '1945-7111']
DOI: https://doi.org/10.1149/1945-7111/ac8240