Premium
Mn x (PO 4 ) y /NPC As a High Performance Bifunctional Electrocatalyst for Oxygen Electrode Reactions
Author(s) -
Wang Shuai,
Nam Gyutae,
Li Ping,
Jang Haeseong,
Wang Jia,
Kim Min Gyu,
Wu Zexing,
Liu Xien,
Cho Jaephil
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201801753
Subject(s) - electrocatalyst , bifunctional , overpotential , oxygen evolution , battery (electricity) , chemistry , manganese , catalysis , zinc , inorganic chemistry , bifunctional catalyst , electrode , materials science , chemical engineering , electrochemistry , organic chemistry , physics , power (physics) , quantum mechanics , engineering
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 (PO 4 ) 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 (PO 4 ) 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+IrO 2 . This research adds a new kind of electrocatalyst into the family of non‐noble metal‐based bifunctional electrocatalyst for rechargeable zinc‐air batteries.