An Asymmetric Ultracapacitors Utilizing α-Co(OH)2/Co3O4 Flakes Assisted by Electrochemically Alternating Voltage

被引：122

作者：

Jing, Mingjun ^{[1
]}

Yang, Yingchang ^{[1
]}

Zhu, Yirong ^{[1
]}

Hou, Hongshuai ^{[1
]}

Wu, Zhibin ^{[1
]}

Ji, Xiaobo ^{[1
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2014年 / 141卷

基金：

中国国家自然科学基金;

关键词：

alpha-Co(OH)(2)/Co3O4 flakes; alternating voltage; activated carbon; asymmetric supercapacitor; GRAPHENE OXIDE; NI FOAM; HYDROTHERMAL SYNTHESIS; COBALT HYDROXIDES; CO3O4; NANOWIRES; SUPERCAPACITOR; PERFORMANCE; ARRAYS; NANOCOMPOSITE; NANOSHEETS;

D O I：

10.1016/j.electacta.2014.07.075

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

alpha-Co(OH)(2)/Co3O4 flakes were obtained through alternating voltage induced electrochemical methodology at room temperature. The as-prepared alpha-Co(OH)(2)/Co3O4 flakes displayed a high specific capacitance of 583 F g(-1) at a current density of 1 A g(-1). An asymmetric supercapacitor is further fabricated with the alpha-Co(OH)(2)/Co3O4 nanocomposite as the anode and activated carbon as the cathode in 2 M aqueous KOH solution as electrolyte. This asymmetric capacitor exhibited a maximum energy density of 22.4 Wh kg(-1) at power density of 290 W kg(-1). Moreover, the asymmetric supercapacitor showed an excellent cycling stability without obvious specific capacitance loss after 2000 cycles at a current density of 1 A g(-1). (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：234 / 240

页数：7

共 50 条

[31] Porous crosslinked Co3O4 nanoflakes synthesized at different pH media for electrochemically charge storage applications
Jadhav, Sharad L.
Jadhav, Amar L.
V. Kadam, Anamika
ELECTROCHIMICA ACTA, 2022, 426
[32] Understanding the Synergistic Effects and Structural Evolution of Co(OH)2 and Co3O4 toward Boosting Electrochemical Charge Storage
Gao, Peng
Zeng, Ying
Tang, Pei
Wang, Zixing
Yang, Jiaofeng
Hu, Aiping
Liu, Jilei
ADVANCED FUNCTIONAL MATERIALS, 2022, 32 (06)
[33] Electrochemical performance of asymmetric supercapacitor based on Co3O4/AC materials
Zhang, Changming
Xie, Lijing
Song, Wen
Wang, Jianlong
Sun, Guohua
Li, Kaixi
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2013, 706 : 1 - 6
[34] Efficient photoelectrochemical water splitting over Co3O4 and Co3O4/Ag composite structure
Hong, Tiantian
Liu, Zhifeng
Zheng, Xuerong
Zhang, Jing
Yan, Lu
APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 202 : 454 - 459
[35] Facile Construction of Sandwich-like Co3O4/CNTs Complex for High-performance Asymmetric Supercapacitors
Wang, Xin
Song, Kun
Yang, Rui
Jing, Xiaoyan
Wang, Jun
CHEMISTRYSELECT, 2019, 4 (13): : 3878 - 3883
[36] Synthesis and characterization of Co3O4 ultra-nanosheets and Co3O4 ultra-nanosheet-Ni(OH)2 as non-enzymatic electrochemical sensors for glucose detection
Mahmoudian, M. R.
Basirun, W. J.
Woi, Pei Meng
Sookhakian, M.
Yousefi, Ramin
Ghadimi, H.
Alias, Y.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 2016, 59 : 500 - 508
[37] Arginine-assisted Thermal Decomposition for Synthesis of Nanosized Co3O4 with Enhanced Capacitance
Zou, Ruyi
Zhu, Lin
Luo, Guiling
Niu, Yanyan
Xie, Hui
Dong, Ruixia
Cheng, Hui
Sun, Wei
Zhang, Laijun
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, 2020, 15 (01): : 484 - 492
[38] An anionic surfactant-templated synthesis and lamellar ordering of Co(OH)2 and Co3O4 nanodisks
Jang, Kwang-Suk
Kim, Jong-Duk
MATERIALS CHEMISTRY AND PHYSICS, 2011, 125 (03) : 777 - 783
[39] Redox-additive electrolyte - driven enhancement of the electrochemical energy storage performance of asymmetric Co3O4//carbon nano-onions supercapacitors
Dhakal, Ganesh
Mohapatra, Debananda
Tamang, Tensangmu Lama
Lee, Moonyong
Lee, Yong Rok
Shim, Jae-Jin
ENERGY, 2021, 218
[40] Vertically-aligned Co3O4 nanowires interconnected with Co(OH)2 nanosheets as supercapacitor electrode
Mei, Junfeng
Fu, Wenbin
Zhang, Zemin
Jiang, Xiao
Bu, Han
Jiang, Changjun
Xie, Erqing
Han, Weihua
ENERGY, 2017, 139 : 1153 - 1158

← 1 2 3 4 5 →