Controllable synthesis of ZnCo2O4@NiCo2O4 hierarchical nanosheets for high performance supercapacitors

被引：5

作者：

Xu, Bo ^{[1
]}

Chen, Ye ^{[1
]}

Zhu, Qiyong ^{[2
]}

Ding, Shouling ^{[1
]}

Yang, Shiliu ^{[1
]}

机构：

[1] Huainan Normal Univ, New Energy Mat & Technol Res Ctr, Huainan Res Ctr New Carbon Energy Mat, Sch Chem & Mat Engn,Anhui Key Lab Low Temp Cofired, Huainan 232038, Peoples R China

[2] Bozhou Univ, Dept Biol & Food Engn, Bozhou 236800, Anhui, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2024年 / 184卷

基金：

中国国家自然科学基金;

关键词：

Hierarchical nanosheets; Hydrothermal; Supercapacitors; ELECTROCHEMICAL PERFORMANCE; ELECTRODE; ZNCO2O4; ARRAYS;

D O I：

10.1016/j.jpcs.2023.111744

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ZnCo2O4@NiCo2O4 hierarchical nanosheets on nickel foam were successfully synthesized via hydrothermal and annealing approaches. The structure, morphology and composition of the prepared ZnCo2O4@NiCo2O4 hierarchical nanosheets were systematically characterized by XRD, SEM, TEM and EDS. Then the electrochemical properties of the ZnCo2O4@NiCo2O4 hierarchical nanosheets were measured in three-electrode system. It is shown that the ZnCo2O4@NiCo2O4 hierarchical nanosheets exhibited higher specific capacitance and better cycling stability as electrode materials than ZnCo2O4 nanosheets. The specific capacitance of the ZnCo2O4@- NiCo2O4 hierarchical nanosheets could reach to a high value of 3021 F g-1 (377 mAh g-1) at current density of 1 A g-1. Moreover, the specific capacitance of the ZnCo2O4@NiCo2O4 hierarchical nanosheets could remain 96.4% of the initial value after 5000 cycles. The excellent electrochemical properties show that the prepared ZnCo2O4@NiCo2O4 hierarchical nanosheets can be a promising electrode material for supercapacitor.

引用

页数：6

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