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Indexed by:期刊论文

Date of Publication:2014-08-15

Journal:JOURNAL OF POWER SOURCES

Included Journals:SCIE、EI、Scopus

Volume:260

Page Number:169-173

ISSN No.:0378-7753

Key Words:Molecular sieve; Nickel phosphate; Supercapacitors; Alkaline media; VSB-5

Abstract:The nickel phosphate molecular sieve VSB-5 as an electrode material for supercapacitors is investigated by cyclic voltammetry (CV) and chronopotentiometry in alkaline media. The VSB-5 shows high specific capacitance and excellent cycling stability. The specific capacitance of VSB-5 is 2740 F g(-1) at a current density of 3 Ag-1 and there is no significant reduction in Coulombic efficiency after 3000 cycles at 30 A g(-1). In comparison with mesoporous nickel phosphate NiPO, porous nickel hydroxide and mesoporous nickel oxide, this remarkable electrochemical performance of VSB-5 will make nickel phosphate material a promising new electrode material for high performance supercapacitors. (C) 2014 Elsevier B.V. All rights reserved.