A new high-performance supercapacitor electrode of strategically integrated cerium vanadium oxide and polypyrrole nanocomposite

被引:47
|
作者
Ponnaiah, Sathish Kumar [1 ,2 ]
Prakash, Periakaruppan [1 ]
机构
[1] Thiagarajar Coll, Dept Chem, Madurai 625009, Tamil Nadu, India
[2] Thiagarajar Coll, MHRD, Natl Ctr Excellence, Madurai 625009, Tamil Nadu, India
关键词
Cerium vanadate; Polypyrrole; Supercapacitor; High capacitance; Energy storage; GRAPHENE OXIDE; NI-FOAM; OXIDATIVE DEHYDROGENATION; NANOTUBES COMPOSITE; CONDUCTING-POLYMER; CARBON; CEVO4; HYBRID; NANOPARTICLES; FABRICATION;
D O I
10.1016/j.ijhydene.2021.03.077
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Herein we show a construction of high-performance supercapacitor electrode made of cerium vanadate uniformly glazed over polypyrrole (CeVO4/Ppy) nanostructures by a simple hydrothermal method, which was characterized by various analytical techniques. Electrochemical studies on CeVO4/Ppy/Ni foam with 1 M KOH show a maximum specific capacitance of 1236 F/g at a current density of 0.75 A/g. These salient features, together with smart interactions between the interconstituents, CeVO4 and Ppy, lead to high conductivity, specific capacitance, and cycling stability with retention of 92.6% capacitance in 10,000 cycles of GCD curves. Additionally, the asymmetric supercapacitor based on activated carbon (AC), AC//CeVO4/Ppy device delivers a high specific capacitance of 116 F/g and energy density of 52.2 Wh/Kg at power density of 675.9 W/kg along with high capacity retention of 77.80% after 10,000 cycles. This system could be scaled up to large-scale production of high power devices, which opens up lot of opportunities in modern electronic industrial applications. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:19323 / 19337
页数:15
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