In:
Nano, World Scientific Pub Co Pte Ltd, Vol. 14, No. 04 ( 2019-04), p. 1950049-
Abstract:
Holey Fe-Anderson-type polyoxometalate/polyaniline/graphene (PPG) hybrid materials were first prepared by anchoring Anderson-type polyoxometalates [FeMo 6 O[Formula: see text]H 6 ][Formula: see text] (FeMo[Formula: see text] onto graphene modified with polyaniline via a facile hydrothermal treatment. The as-prepared materials exhibited an excellent electrochemical performance with a high specific capacitance of 1366 F g[Formula: see text] at 1 A g[Formula: see text] and outstanding cycling stability (97.6% capacitance retention after 5000 cycle times). The uptake of polyaniline/FeMo 6 nanoparticles on graphene not only provided the pseudocapacitance but also weakened the aggregation between the graphene layers, resulting in a higher surface area compared with pure graphene. In addition, the AC//PPG-15 asymmetric supercapacitor device showed a high energy density of 24.65[Formula: see text]W h kg[Formula: see text] at a low power density of 326.25[Formula: see text]W kg[Formula: see text] and good cycling stability (94.82% capacitance retention after 5000 cycles). Hence, the as-prepared PPG hybrid materials in this work possess tremendous potential as electrodes for high-performance supercapacitors.
Type of Medium:
Online Resource
ISSN:
1793-2920
,
1793-7094
DOI:
10.1142/S1793292019500498
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2019
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