Construction of hierarchical nanoporous CuCo2V2O8 hollow spheres as a novel electrode material for high-performance asymmetric supercapacitors

被引：53

作者：

Amiri, Maryam ^{[1
]}

Davarani, Saied Saeed Hosseiny ^{[1
]}

Kaverlavani, Saeid Kamari ^{[1
]}

Moosavifard, Seyyed Ebrahim ^{[2
,3
]}

Shamsipur, Mojtaba ^{[4
]}

机构：

[1] Shahid Beheshti Univ, Fac Chem, GC, Tehran 1983963113, Iran

[2] Jahrom Univ Med Sci, Sch Med, Dept Adv Med Sci & Technol, Jahrom 7414846199, Iran

[3] Jahrom Univ Med Sci, Sch Med, Dept Biochem, Jahrom 7414846199, Iran

[4] Razi Univ, Dept Chem, Kermanshah, Iran

来源：

APPLIED SURFACE SCIENCE | 2020年 / 527卷

关键词：

Nanoporous hollow spheres; Ternary transition metal oxides; Energy density; Asymmetric supercapacitors; Cycling stability; REDUCED GRAPHENE OXIDE; NANOWIRE ARRAYS; METAL-OXIDES; NI FOAM; NANOSHEET; DEVICES; CO; NANOCOMPOSITE; NANOSPHERES;

D O I：

10.1016/j.apsusc.2020.146855

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：

Design of novel and efficient materials is a crucial requirement to develop supercapacitor electrodes for the production of green and renewable energy storage systems. In this study, for the first time, highly porous quaternary CuCo2V2O8 hollow spheres are fabricated by a two-step self-templating method. Copper-cobalt-vanadate microspheres are first synthesized via a facile anion-exchange process between the glycerate (in Cu-Coglycerate) and VO3- ions. Afterward, the copper-cobalt-vanadate microspheres are converted into hierarchical CuCo2V2O8 hollow spheres through an annealing treatment the air. In virtue of the structural advantages, the asprepared material revealed outstanding electrochemical properties as a high-performance electrode for supercapacitor (SCs) with a specific capacity of 799.8 C g(-1) at 2 A g(-1) (222.1 mAh g(-1) at 6 mA cm(-2)), remarkable cycle stability (96.5% capacitance retention over 7000 cycles), superior rate capability around 60.65% capacitance retention at 50 A g(-1).

引用

页数：8

共 67 条

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