Oxidation effect of ammonium persulfate on the supercapacitive properties of β-Ni(OH)2 nanosheets

被引：3
作者：
Wang, Minmin [1 ]
Ma, Wenle [1 ]
Xue, Junying [1 ]
Zhang, Fangming [1 ]
Cui, Hongtao [1 ]
机构：
[1] Yantai Univ, Coll Chem & Chem Engn, Shandong Prov Engn Res Ctr Light Hydrocarbon Comp, Yantai 264005, Peoples R China
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2016年 / 213卷 / 01期
关键词：
nanosheets; nickel hydroxide; oxidation; supercapacitor; NICKEL-HYDROXIDE; ELECTRODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; POSITIVE ELECTRODE; CARBON NANOTUBE; ALPHA-NI(OH)(2); FABRICATION; GRAPHENE; NIOOH; FOAM;
D O I：
10.1002/pssa.201532522
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
beta-Ni(OH)(2) nanosheets with high electrochemical performance were synthesized under in situ oxidation of ammonium persulfate by a simple precipitation method. The synthetic procedure included a precipitation step using sodium hydroxides as precipitation agent and an oxidation step using ammonium persulfate as oxidant. Due to the increased overpotential and the reduced difference between anodic and cathodic potential, the as-prepared material presented a high specific capacity of 999 C g(-1) at current density of 1.7 A g(-1), which is nearly equal to the theoretical value of beta-Ni(OH)(2). It is worth noticing that the material kept a high capacity of 509 C g(-1) at high current density of 33.9 Ag-1. Combined with the advantage of high electrochemical stability, these results suggest that the material is a highly promising candidate for application in supercapacitor. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：215 / 220
页数：6
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