NiFeMo Nanoparticles Encapsulated within Nitrogen-Doped Reduced Graphene Oxide as Bifunctional Electrocatalysts for Zinc-Air Batteries

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F20%3A10246079" target="_blank" >RIV/61989100:27710/20:10246079 - isvavai.cz</a>
Result on the web
<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202001475" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202001475</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/celc.202001475" target="_blank" >10.1002/celc.202001475</a>

Result language
angličtina
Original language name
NiFeMo Nanoparticles Encapsulated within Nitrogen-Doped Reduced Graphene Oxide as Bifunctional Electrocatalysts for Zinc-Air Batteries
Original language description
Rechargeable metal-air batteries (MABs) have emerged as promising candidates for portable energy storage technologies because of their favorable energy/power density, safety, and cost-effectiveness. However, the lack of advanced bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) restricts the commercial realization of rechargeable MABs. Herein, we developed a facile fabrication route to prepare N-doped graphene oxide encapsulating nanoparticles of a ternary NiFe metal oxide (NiFeMo@N-rGO) serving as an efficient bifunctional catalyst. The obtained NiFeMo@N-rGO bifunctional catalyst demonstrates a comparable catalytic reactivity when compared to precious metal catalysts in alkaline electrolytes regarding ORR/OER performance (ORR: half-wave potential of 0.82 V; OER: overpotential of 330 mV; ▵E: 0.73 V at 10 mA cmMINUS SIGN 2). The assembled zinc-air batteries (ZABs) catalyzed by NiFeMo@N-rGO exhibit a high power density of 120 mW cmMINUS SIGN 2 and a capacity of 721 mAh gZnMINUS SIGN 1, coupled with long-term durability of over 200 h. This contribution paves a practical avenue to prepare efficient bifunctional catalysts for superior ZABs. (C) 2020 Wiley-VCH GmbH
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20400 - Chemical engineering

Project
<a href="/en/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institute of Environmental Technology - Excellent Research</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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