Electrocatalytic Activity of Reduced Graphene Oxide Supported Cobalt Cinnamate for Oxygen Evolution Reaction

Myung Jun Lee, Junyeop Kim, Jaeun Kang, Hyewon Shin, Junghwan Do and Seong Jung Kwon
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Myung Jun Lee: Department of Chemistry, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
Junyeop Kim: Department of Chemistry, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
Jaeun Kang: Department of Chemistry, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
Hyewon Shin: Department of Chemistry, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
Junghwan Do: Department of Chemistry, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
Seong Jung Kwon: Department of Chemistry, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea

Energies, 2021, vol. 14, issue 16, 1-11

Abstract: The stability of porous coordination polymers during an electrochemical reaction could be improved by introducing supporter materials. An I 3 O 0 -type inorganic hybrid electrocatalyst, cobalt cinnamate, supported on reduced graphene oxide (rGO) was successfully prepared for an oxygen evolution reaction. The electrocatalytic activity and stability of cobalt cinnamate(catalyst)/rGO composite were significantly improved due to the strong interaction between catalyst and supporter, which led to enhanced anchoring stability and electrical conductivity. The catalyst/rGO composite shows ~30 mV reduction in overpotential and improvement in durability from ?35% to ?70% after a reaction time of 12 h, compared to the catalyst alone.

Keywords: oxygen evolution reaction; electrocatalyst; porous coordination polymers; metal-organic frameworks; graphene oxide composite (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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