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A Novel Method to Prepare Flexible 3D NiO Nanosheets Electrodes for Alkaline Rechargeable Ni−Zn Batteries
Author(s) -
Zhou Kai,
Guo Xinying,
Guo Yuanyuan,
Zhuang Ruoxi,
Chen Huifeng,
Wang Shuai,
Bao Yu,
Han Dongxue,
Niu Li
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202100338
Subject(s) - non blocking i/o , materials science , electrode , alkaline battery , electrochemistry , cathode , battery (electricity) , chemical engineering , etching (microfabrication) , energy storage , nanotechnology , layer (electronics) , power (physics) , chemistry , catalysis , physics , quantum mechanics , engineering , electrolyte , biochemistry
The combination of excellent mechanical properties and electrochemical performances of Ni‐based cathodes is fascinating and challenging for Ni−Zn batteries. Herein, a novel and eco‐friendly strategy of the cycle of Ni 2+ hydrolysis and H + etching process at Ni/solution interface under moderate temperature is demonstrated to synthesize the three‐dimensional NiO nanosheets array supported on pressed Ni foam electrode (denoted as NiO/PNF). The as‐prepared NiO/PNF electrode exhibits outstanding mechanical flexibility and stability with a capacity of 5.08 mAh cm −3 . The assembled NiO/PNF||Zn battery presents peak energy and power densities up to 5.2 mW h cm −3 and 1944.4 mW cm −3 .