Hierarchical CuCo2O4/CuO nanoflowers crosslinked with carbon nanotubes as an advanced electrode for supercapacitors?

被引：36

作者：

Liu, Yafei ^{[1
]}

Chang, Xiaoya ^{[2
]}

Wang, Mengying ^{[1
]}

Guo, Huinan ^{[1
]}

Li, Weiqin ^{[1
]}

Wang, Yijing ^{[1
]}

机构：

[1] Nankai Univ, Coll Chem, Renewable Energy Convers & Storage Ctr, Key Lab Adv Energy Mat Chem,Minist Educ, Tianjin 300071, Peoples R China

[2] Shenzhen Battery Dev Ctr BYD, Dept Electrochem Technol, FinDream Battery, Shenzhen 518000, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 871卷

基金：

中国国家自然科学基金;

关键词：

Supercapacitor; CuCo2O4/CuO/carbon nanotubes; 3D hierarchical structure; ASYMMETRIC SUPERCAPACITORS; FACILE SYNTHESIS; ANODE MATERIAL; NI FOAM; PERFORMANCE; MORPHOLOGY; GRAPHENE; NANOCOMPOSITES; NANOSHEETS; COMPOSITE;

D O I：

10.1016/j.jallcom.2021.159555

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：

The emerging CuCo2O4 is a promising electrode material for supercapacitors, while the low conductivity and volume expansion limit the specific capacity and rate performance. Here, a facile solvothermal method is used to synthesize hierarchical flower-like CuCo2O4/CuO. Then the CuCo2O4/CuO that crosslinked with carbon nanotubes could form a 3D conductive network and lead to a superior electrochemical performance. As-prepared material CuCo2O4/CuO/carbon nanotubes exhibit a specific capacitance of 1084 F g(-1) at 2 A g(-1) and excellent cycling stability of 97.8% retention after 9000 cycles. Moreover, the assembled asymmetric supercapacitor coupled with active carbon demonstrates an extraordinary cycling stability (86.8% after 9000 cycles). (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：9

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