SECONDARY BATTERY, AND BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE COMPRISING THE SAME
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United States of America
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Dec 5, 2024
app pub date -
Jul 31, 2024
filing date -
Jul 31, 2024
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Abstract
This application provides a secondary battery, and providing a battery module, a battery pack, and a powder device comprising the same. The secondary battery includes a positive electrode plate and a non-aqueous electrolytic solution, in which the positive electrode plate includes a positive electrode active material having a core-shell structure, said positive electrode active material includes an inner core and a shell covering the core, said core has a chemical formula of Li1+xMn1-yAyP1-zRzO4, said shell includes a first coating layer covering said core, a second coating layer covering said first coating layer, and a third coating layer covering said second coating layer. The secondary battery of the present application can have a relatively high energy density, and also a good rate performance, cycling performance, storage performance and safety performance.
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