Reagent-assisted hydrothermal synthesis of NiCo2O4 nanomaterials as electrodes for high-performance asymmetric supercapacitors

被引：24

作者：

Lu, Zhe ^{[1
]}

Xuan, Dipan ^{[1
]}

Wang, Dechao ^{[1
]}

Liu, Jie ^{[1
]}

Wang, Zhuang ^{[1
]}

Liu, Qian ^{[1
]}

Wang, Duo ^{[1
]}

Ye, Yueyuan ^{[1
]}

Zheng, Zhifeng ^{[1
,2
]}

Li, Shuirong ^{[1
]}

机构：

[1] Xiamen Univ, Fujian Prov Ind Technol Dev Base New Energy, Fujian Prov Engn & Res Ctr Clean & High Valued Te, Coll Energy,Xiamen Key Lab High Valued Convers Te, Xiamen 361102, Peoples R China

[2] Xiamen Univ, China Fujian Innovat Lab Energy Mat Sci & Technol, Tan Kh Kee Innovat Lab, Xiamen 361102, Peoples R China

来源：

NEW JOURNAL OF CHEMISTRY | 2021年 / 45卷 / 20期

基金：

中国国家自然科学基金;

关键词：

ENERGY-STORAGE; NI-FOAM; ELECTROCHEMICAL PROPERTIES; CHEMICAL-SYNTHESIS; CARBON; NANOSTRUCTURES; DESIGN; FACILE; NANOPARTICLES; FABRICATION;

D O I：

10.1039/d1nj00268f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, mesoporous nickel cobaltate (NiCo2O4) nanomaterials were loaded onto nickel foam through a simple and environment-friendly reagent assisted hydrothermal method. The impacts of reagents on the micro-morphology and electrochemical capacitive properties were studied. The NiCo2O4 nanoneedle arrays prepared with cetyltrimethylammonium bromide (CTAB) as the auxiliary reagent exhibited a relatively higher specific surface area, convenient charge transport channel, excellent specific capacitance (1153.2 F g(-1) at a current density of 1 A g(-1)), remarkable rate performance (10 A g(-1), 812 F g(-1)) and good cycling stability (75% of the initial value is retained at 10 A g(-1) after 1000 cycles). The asymmetric supercapacitor assembled by the optimized NiCo2O4 nanomaterial as the positive electrode and activated carbon as the negative electrode provides an energy density of 22.5 W h kg(-1) at 800 W kg(-1), and displays an excellent cycle performance of 97.1% after 1000 cycles at 1 A g(-1). It is suggested that the CTAB-assisted nanoneedle array-structured NiCo2O4 electrode material could be a potential candidate for supercapacitors.

引用

页码：9230 / 9242

页数：13

共 59 条

[1] Oxalic acid assisted rapid synthesis of mesoporous NiCo2O4 nanorods as electrode materials with higher energy density and cycle stability for high-performance asymmetric hybrid supercapacitor applications [J].