Acid-based modified NiCo2O4 as high-performance supercapacitor electrode materials

被引：2
作者：
Geng, Wenbo [1 ]
Wang, Qing [1 ,2 ]
Dai, Jianfeng [1 ,2 ]
Gao, Haoran [1 ]
机构：
[1] Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
[2] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Non Ferrous M, Lanzhou 730050, Gansu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2021年 / 35卷 / 19期
关键词：
Supercapacitor; NiCo2O4; hydrothermal synthesis; electrochemistry; crystal structure; energy storage and conversion; NI FOAM; NANOSHEETS;
D O I：
10.1142/S0217979221502003
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The performance of supercapacitor electrode materials was greatly affected by the specific surface area. The urchin-like NiCo2O4 was transformed into porous NiCo2O4 (AA-NiCo2O4) using the acid-alkali treatment method. The specific surface area of AA-NiCo2O4 was 165.0660 m(2)/g, which was about three times larger than that of NiCo2O4. The specific capacitance of the AA-NiCo2O4 was enhanced significantly (1700 F/g at 1 A/g), and AA-NiCo2O4 possesses good rate capacitance (1277 F/g at 10 A/g). This is mainly attributed to the larger specific surface area, fast and convenient electron-ion transport and redox reaction. Therefore, AA-NiCo2O4 is a promising high-performance supercapacitor electrode material.
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页数：8
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