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Cho, Jaephil
Nano Energy Storage Material Lab.
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Mn-x(PO4)(y)/NPC As a High Performance Bifunctional Electrocatalyst for Oxygen Electrode Reactions

Author(s)
Wang, ShuaiNam, GyutaeLi, PingJang, HaeseongWang, JiaKim, Min GyuWu, ZexingLiu, XienCho, Jaephil
Issued Date
2019-02
DOI
10.1002/cctc.201801753
URI
https://scholarworks.unist.ac.kr/handle/201301/26393
Fulltext
https://onlinelibrary.wiley.com/doi/full/10.1002/cctc.201801753
Citation
CHEMCATCHEM, v.11, no.4, pp.1222 - 1227
Abstract
Developing highly efficient and durable bifunctional electrocatalyst for oxygen reduction (ORR) and oxygen evolution reaction (OER) is quite important for developing rechargeable zinc-air batteries. Herein, one kind of manganese phosphate-based electrocatalyst (Mn-x(PO4)(y)/NPC) with high specific surface area (1106.9 m(2) g(-1)) is prepared via a facile and scalable avenue, which possesses remarkable catalytic performance for the both ORR and OER, indicated by a more positive half-wave potential of 0.87 V in 0.1 M KOH for the ORR as well as an overpotential of 0.37 V to achieve the current density of 10 mA cm(-2) in 1 M KOH for the OER. Furthermore, the Mn-x(PO4)(y)/NPC assembled rechargeable zinc-air battery shows an excellent charge-discharge cycling performance, revealed by the smaller sum of charge-discharge potentials, comparable to that of Pt/C+IrO2. This research adds a new kind of electrocatalyst into the family of non-noble metal-based bifunctional electrocatalyst for rechargeable zinc-air batteries.
Publisher
WILEY-V C H VERLAG GMBH
ISSN
1867-3880
Keyword (Author)
oxygen reduction reactionoxygen evolution reactionzinc-air batteryphosphatenon-noble metal
Keyword
GEL-ASSISTED SYNTHESISCO-DOPED GRAPHENEREDUCTION REACTION3-DIMENSIONAL NITROGENMN3O4 NANOPARTICLESCARBON NANOTUBESEFFICIENTCATALYSTNANOSHEETSFE

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