Issue 35, 2015

Preparation of size-selective Mn3O4 hexagonal nanoplates with superior electrochemical properties for pseudocapacitors

Abstract

Porous Mn3O4 hexagonal nanoplates were synthesized through annealing the hydrohausmannite precursor obtained by a one-pot hydrothermal process and by precisely controlling the concentrations of potassium hydroxide and glucose. The effect of potassium hydroxide and glucose on the growth of hexagonal nanoplates was investigated, and a growth mechanism was also proposed. Due to its abundant pores, the pure Mn3O4-based electrode exhibits excellent cycling stability with 100% capacity retention after 5000 cycles. The asymmetric supercapacitor exhibited high performance with an energy density of 17.276 W h kg−1 at a power density of 207.3 W kg−1 in a wide potential window of 1.5 V.

Graphical abstract: Preparation of size-selective Mn3O4 hexagonal nanoplates with superior electrochemical properties for pseudocapacitors

Supplementary files

Article information

Article type
Paper
Submitted
10 Jun 2015
Accepted
04 Aug 2015
First published
07 Aug 2015

Phys. Chem. Chem. Phys., 2015,17, 23017-23025

Preparation of size-selective Mn3O4 hexagonal nanoplates with superior electrochemical properties for pseudocapacitors

G. Wang, Z. Ma, Y. Fan, G. Shao, L. Kong and W. Gao, Phys. Chem. Chem. Phys., 2015, 17, 23017 DOI: 10.1039/C5CP03366G

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