Materials Transactions Online

Materials Transactions, Vol.58 No.02 (2017) pp.298-301
© 2016 The Japan Institute of Metals and Materials

Pseudocapacitive Behavior of Ag3PO4 Nanospheres Prepared by a Sonochemical Process

Chengxiang Zheng1, Hua Yang1 and Yang Yang1

1School of Science, Lanzhou University of Technology, Lanzhou 730050, People's Republic of China

Ag3PO4 nanospheres with an average size of ~300 nm were synthesized via a sonochemical process. The electrochemical performances of the as-synthesized Ag3PO4 nanospheres in aqueous KOH electrolyte with different concentrations were investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. The measured cyclic voltammetry curves as well as charge-discharge curves reveal a good pseudocapacitive behavior of Ag3PO4 nanospheres. In a 1 M KOH electrolyte at a current density of 0.5 mA cm−2, the specific capacitance of Ag3PO4 nanospheres is obtained to be 832 F g−1. However, Ag3PO4 nanospheres exhibit an inferior charge-discharge cycling stability, which could be due to the formation of Ag2O during the cycling process.

[doi:10.2320/matertrans.M2016312]

(Received 2016/09/05; Accepted 2016/11/17; Published 2017/01/25)

Keywords: spherical Ag3PO4 particles, KOH electrolyte, electrochemical performance, pseudocapacitance

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