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Title: All-solid-state asymmetric supercapacitor based on porous cobalt selenide thin films

Abstract

As a significant semiconductor material, cobalt selenide has enormous potential and extensive application prospects in the field of solar cells, photocatalysis and supercapacitor. In this paper, porous CoSe thin films were successfully fabricated on stainless-steel sheet using a facile, effective electrodeposition technique. Electrochemical tests reveal that the specific capacitance reaches as high as 510 F g –1 at the current density of 1 A g –1 with the capacitance retention of 91% over 5000 cycles. An asymmetric all-solid-state supercapacitor is fabricated using CoSe thin film as the positive electrode and activate carbon as the negative electrode. The combined solid device displays a high area specific capacitance of 18.1 mF cm –2 accompanied with good cycling stability, outstanding flexibility and satisfactory mechanical stability. Furthermore, the solid devices connected in series can power the red light-emitting diodes. Here, the results show great potential for preparing large scale high energy density storage systems.

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [1];  [2]
  1. Hohai Univ., Nanjing (People's Republic of China)
  2. Ames Lab., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1471059
Report Number(s):
IS-J-9748
Journal ID: ISSN 0925-8388; PII: S0925838818332523
Grant/Contract Number:  
11104062; 2018B19714; AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 772; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; Cobalt selenide; Electrochemical properties; Asymmetric; All-solid-state supercapacitors

Citation Formats

Zhang, Xincheng, Gong, Jiangfeng, Zhang, Kaixiao, Zhu, Weihua, Li, Jing -Chang, and Ding, Qingping. All-solid-state asymmetric supercapacitor based on porous cobalt selenide thin films. United States: N. p., 2018. Web. doi:10.1016/j.jallcom.2018.09.023.
Zhang, Xincheng, Gong, Jiangfeng, Zhang, Kaixiao, Zhu, Weihua, Li, Jing -Chang, & Ding, Qingping. All-solid-state asymmetric supercapacitor based on porous cobalt selenide thin films. United States. doi:10.1016/j.jallcom.2018.09.023.
Zhang, Xincheng, Gong, Jiangfeng, Zhang, Kaixiao, Zhu, Weihua, Li, Jing -Chang, and Ding, Qingping. Sat . "All-solid-state asymmetric supercapacitor based on porous cobalt selenide thin films". United States. doi:10.1016/j.jallcom.2018.09.023. https://www.osti.gov/servlets/purl/1471059.
@article{osti_1471059,
title = {All-solid-state asymmetric supercapacitor based on porous cobalt selenide thin films},
author = {Zhang, Xincheng and Gong, Jiangfeng and Zhang, Kaixiao and Zhu, Weihua and Li, Jing -Chang and Ding, Qingping},
abstractNote = {As a significant semiconductor material, cobalt selenide has enormous potential and extensive application prospects in the field of solar cells, photocatalysis and supercapacitor. In this paper, porous CoSe thin films were successfully fabricated on stainless-steel sheet using a facile, effective electrodeposition technique. Electrochemical tests reveal that the specific capacitance reaches as high as 510 F g–1 at the current density of 1 A g–1 with the capacitance retention of 91% over 5000 cycles. An asymmetric all-solid-state supercapacitor is fabricated using CoSe thin film as the positive electrode and activate carbon as the negative electrode. The combined solid device displays a high area specific capacitance of 18.1 mF cm–2 accompanied with good cycling stability, outstanding flexibility and satisfactory mechanical stability. Furthermore, the solid devices connected in series can power the red light-emitting diodes. Here, the results show great potential for preparing large scale high energy density storage systems.},
doi = {10.1016/j.jallcom.2018.09.023},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 772,
place = {United States},
year = {2018},
month = {9}
}

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