CAS OpenIR
Defect Engineering can Enhance the Electrochemical Performance of WS2 for Thermal Batteries
Chen,Fuhua1,2,3; Guo,Hao4; Zhao,Lili2,3; Guo,Xin1,2,3; Li,Shunchang1,2,3; Chu,Ying2,3; Wang,Xueying2,3; Zhu,Yongping2,3
2021-10-01
Source PublicationJournal of The Electrochemical Society
ISSN0013-4651
Volume168Issue:10
AbstractAs a cathode material for thermal batteries, WS2 has high thermal decomposition temperature and large specific capacity, but it is an intermittent semiconductor, with relatively low conductivity. This low conductivity can prolong the activation time and reduce the discharge specific capacity of thermal batteries. Here, we prepared WS2 with sulfur vacancies through a simple high-temperature annealing method and used electron paramagnetic resonance spectroscopy and X-ray photoelectron spectroscopy to detect the presence of sulfur vacancies. The result shows that sulfur vacancies were successfully introduced in WS2, and the existence of sulfur vacancies can effectively improve the discharge performance of thermal batteries. While maintaining the nanostructure, the thermal decomposition temperature still exceeds 1000 °C, which is far beyond the traditional FeS2 (550 °C) and CoS2 (650 °C) cathodes. The Li-B/LiF-LiBr-LiCl/WS2 with sulfur vacancies (treated at 500 °C) couple has higher discharge specific capacity (when the cut-off voltage is 0.5 V, it is 380.58 mAh g?1, which is 14.85% higher than the original WS2) and lower total polarization (about 21% lower than original WS2). This work provides a beginning for further study of sulfur vacancies defect materials as the cathode of thermal batteries.
KeywordThermal battery thermal stability Cathode material Sulfur vacancy WS2
DOI10.1149/1945-7111/ac2ebe
Language英语
WOS IDIOP:0013-4651-168-10-ac2ebe
PublisherIOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49953
Collection中国科学院过程工程研究所
Corresponding AuthorChen,Fuhua; Zhao,Lili; Zhu,Yongping
Affiliation1.University of Chinese Academy of Sciences, Beijing 100039, People’s Republic of China
2.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
3.Key Laboratory of Science and Technology on Particle Materials, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
4.State Key Laboratory of Advanced Chemical Power Sources, Guizhou Meiling Power Sources Co. Ltd. Zunyi, 563003 Guizhou, People’s Republic of China
Recommended Citation
GB/T 7714
Chen,Fuhua,Guo,Hao,Zhao,Lili,et al. Defect Engineering can Enhance the Electrochemical Performance of WS2 for Thermal Batteries[J]. Journal of The Electrochemical Society,2021,168(10).
APA Chen,Fuhua.,Guo,Hao.,Zhao,Lili.,Guo,Xin.,Li,Shunchang.,...&Zhu,Yongping.(2021).Defect Engineering can Enhance the Electrochemical Performance of WS2 for Thermal Batteries.Journal of The Electrochemical Society,168(10).
MLA Chen,Fuhua,et al."Defect Engineering can Enhance the Electrochemical Performance of WS2 for Thermal Batteries".Journal of The Electrochemical Society 168.10(2021).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen,Fuhua]'s Articles
[Guo,Hao]'s Articles
[Zhao,Lili]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen,Fuhua]'s Articles
[Guo,Hao]'s Articles
[Zhao,Lili]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen,Fuhua]'s Articles
[Guo,Hao]'s Articles
[Zhao,Lili]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.