One-step electrodeposited cracked-bark-shaped NiCoMoS on carbon cloth for high-performing aqueous asymmetric supercapacitors

被引：0

作者：

Li, Donghao ^{[1
,2
]}

Li, Yali ^{[1
,2
]}

Chen, Yongchao ^{[1
,2
]}

Dong, Yunxia ^{[1
,2
]}

Hu, Jidong ^{[1
,2
]}

Zhao, Jiawei ^{[1
,2
]}

Zhao, Shoukun ^{[1
,2
]}

Fu, Yujun ^{[1
,2
]}

He, Deyan ^{[1
,2
]}

Li, Junshuai ^{[1
,2
]}

机构：

[1] Lanzhou Univ, LONGi Inst Future Technol, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Sch Mat & Energy, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF ENERGY STORAGE | 2024年 / 102卷

关键词：

Flexible electrode; Transition metal sulfides; Aqueous asymmetric supercapacitor; High energy density; NANOSHEETS; EFFICIENT;

D O I：

10.1016/j.est.2024.114253

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The present study focuses on the development of a high-performing flexible electrode with a cracked-bark- shaped nanostructure of NiCoMoS (NCMS) on carbon cloth through one-step electrodeposition. The electrode demonstrates an impressive capacitance of 10,860.0 mF cm- 2 at 1 mA cm-- 2 and superior rate performance, maintaining a capacitance of 4212.0 mF cm-- 2 even at 60 mA cm-- 2 . Cycling test reveals that the electrode retains 86.2 % of its original capacitance and nearly 100 % Coulombic efficiency after 6000 cycles at 30 mA cm-- 2 , attributed to the effective stress release facilitated by the cracked-bark-shaped structure. An aqueous asymmetric supercapacitor, comprising of NCMS cathode, activated carbon anode and 2 M KOH electrolyte, demonstrates an energy density of 0.600 mWh cm- 2 at 0.800 mW cm-- 2 while exhibiting superior cycling stability (82.9 % after 15,000 cycles) at 30 mA cm-- 2 .

引用

页数：7