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.

引用

页数：8

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