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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20400 - Chemical engineering

Projekt

<a href="/cs/project/EF16_019%2F0000853" target="_blank" >EF16_019/0000853: Institut environmentálních technologií - excelentní výzkum</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ChemElectroChem

ISSN

2196-0216

e-ISSN

—

Svazek periodika

Neuveden.

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000603140000001

EID výsledku v databázi Scopus

2-s2.0-85098149825