Failure and renovation of CoS2 powder as cathode materials from thermal battery

被引：9
|
作者：
Chu, Ying [1 ]
Li, Shunchang [1 ]
Chen, Fuhua [1 ]
Feng, Yong [2 ]
Shi, Bin [2 ]
Zhao, Lili [1 ]
Wang, Xueying [1 ]
Zhu, Yongping [1 ]
机构：
[1] Chinese Acad Sci, Inst Proc Engn, Key Lab Sci & Technol Particle Mat, Beijing 100190, Peoples R China
[2] State Key Lab Adv Chem Power Sources SKL ACPS, Guizhou 563003, Peoples R China
来源：
MATERIALS LETTERS | 2022年 / 323卷
关键词：
Microstructure; Powder technology; Thermal analysis; CoS2; Failure; Renovation; METAL-SULFUR SYSTEMS; PHASE-RELATIONSHIPS; THERMODYNAMICS;
D O I：
10.1016/j.matlet.2022.132503
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The CoS2 powder is a kind of typical cathode material for the thermal battery. However, its poor chemical stability is easy to cause the failure. The failed CoS2 can lead to serious degradation of the electrochemical and security performance of the thermal battery. In this paper, the failure mechanism and renovation method of CoS2 powder synthesized by solid-state method are researched. The failure of CoS2 powder is caused by the chemical reaction with moisture and oxygen. The crucial factor leading to failure is moisture rather than oxygen, thus the failure of CoS2 powder can be prevent by controlling the humidity in the storage environment. The failure powder can be renovated and transformed into CoS2 after be calcined with appropriate proportion sulfur powder.
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页数：4
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