An alternative HCMS carbon catalyst in bromine reduction reaction for hydrogen-bromine flow batteries

Date

2021-08-01

Author

Karaeyvaz, Mukaddes Candan
FIÇICILAR, BERKER

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In this study, significantly active hollow core mesoporous shell (HCMS) carbon catalysts are synthesized for the hydrogen-bromine flow battery cathode electrode. As an alternative to cathode catalysts such as Pt/C or carbon black, high surface area HCMS carbons are synthesized and its effect on hydrogen-bromine flow battery performance has been investigated for grid-scale energy storage for the first time. HCMS carbon is synthesized by template replication of the solid core mesoporous shell silica spheres. By changing the amount of TEOS (1 mL, 6 mL, 10 mL) used during silica template formation, carbons with different core/shell structures have been produced (HCMS1, HCMS6, HCMS10). Structural characterizations of the synthesized cathode catalysts have been performed with SEM, TEM, and N-2 adsorption analyses. Electrochemical characterization of catalysts has been performed by cyclic voltammetry analyses and flow battery performance tests. 0.50 W/cm(2) peak power density obtained with HCMS1 carbon is promising compared to Pt-based catalysts and commercial carbons. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

URI

https://hdl.handle.net/11511/91948

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

DOI

https://doi.org/10.1016/j.ijhydene.2020.11.055

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

M. C. Karaeyvaz and B. FIÇICILAR, “An alternative HCMS carbon catalyst in bromine reduction reaction for hydrogen-bromine flow batteries,” INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 46, no. 57, pp. 29512–29522, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/91948.