LFP-type battery cell for thermal battery

The invention discloses an LFP-type battery cell for a thermal battery. LiFePO4 is used as a positive electrode material of the thermal battery, the battery cell is charged in a high-temperature environment, and the high-temperature-resistant high-potential lithium-poor state LixFePO4 positive elect...

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Bibliographische Detailangaben
Hauptverfasser:	YE DANHONG, LIU KAITE, ZHU MING, JIANG YITIAN, LIU KEFAN, GAO WENXIU, LUO CHONGXIAO, HAN TINGTING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The invention discloses an LFP-type battery cell for a thermal battery. LiFePO4 is used as a positive electrode material of the thermal battery, the battery cell is charged in a high-temperature environment, and the high-temperature-resistant high-potential lithium-poor state LixFePO4 positive electrode material for the thermal battery is obtained after the charging is finished and the battery is cooled. According to the single battery charging mode adopted by the invention, the characteristic that a voltage platform of LiFePO4 is changed into a curve at high temperature is utilized, stepless regulation can be carried out on the voltage by controlling the charging degree of the material according to different selected electrolytes, and the matching problem of a high-voltage positive electrode material and a molten salt electrolyte is solved. The heat-resistant temperature of the LiFePO4 and the lithium-poor state LixFePO4 cathode material thereof provided by the invention exceeds 800 DEG C and is fa