Applied Catalysis2022，Vol.30014.DOI:10.1016/j.apcatb.2021.120752

Rational design of multifunctional electrocatalyst: An approach towards efficient overall water splitting and rechargeable flexible solid-state zinc-air battery

Ramakrishnan, Shanmugam Velusamy, Dhinesh Babu Sengodan, Sivaprakash Nagaraju, Goli Kim, Do Hwan Kim, Ae Rhan Yoo, Dong Jin
Applied Catalysis2022，Vol.30014.DOI:10.1016/j.apcatb.2021.120752
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  • NSTL
  • Elsevier

Rational design of multifunctional electrocatalyst: An approach towards efficient overall water splitting and rechargeable flexible solid-state zinc-air battery

Ramakrishnan, Shanmugam 1Velusamy, Dhinesh Babu 2Sengodan, Sivaprakash 3Nagaraju, Goli 3Kim, Do Hwan 1Kim, Ae Rhan 1Yoo, Dong Jin1
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作者信息

  • 1. Jeonbuk Natl Univ, Dept Energy Storage, Convers Engn Grad Sch BK21 FOUR, Jeollabuk Do 54896, South Korea
  • 2. Univ Manchester, Natl Graphene Inst, Manchester M13 9PL, Lancs, England
  • 3. Imperial Coll London, Dept Mat, London SW7 2AZ, England
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Abstract

Constructing an electrocatalyst with highly durable active and cost-effective core-shell with a porous carbon nanosheet for the development of high efficiency energy conversion and storage devices. Herein, we developed core-shell nickel-iron oxide on a highly porous N-doped carbon nanosheet (CS-NFO@PNC) via a facile solvothermal calcination route. The optimized CS-NFO@PNC-700 showed remarkable electrocatalytic activity towards ORR (0.85 V vs RHE), OER r10 = 217 mV, and HER r10 = 200 mV with excellent durability towards the corresponding half-cell reactions. Further, we investigated the ORR, OER, and HER mechanistic pathways of the electrocatalyst using the density functional theory. Finally, we fabricated a rechargeable liquid electrolyte-based zinc-air battery with CS-NFO@PNC-700 as the cathode which displayed an improved power density of 130 mW cm-2 at 217 mA cm-2 with excellent durability of 180 h. The rechargeable flexible quasi-solid-state zinc-air battery with CS-NFO@PNC-700 air cathode, which exhibited excellent long term durability over 40 h at 5 mA cm- 2.

Key words

Multifunctional electrocatalyst/Nickel-iron oxide/Overall water splitting/Density functional theory

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量110
参考文献量86
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