Lithium-replenishing agent and preparation method therefor, positive electrode sheet and secondary battery
By coating the surface of lithium phosphate with iron boride, the lithium loss problem caused by SEI film formation during the first charge of lithium-ion batteries is solved, improving the energy density and cycle performance of lithium-ion batteries, reducing manufacturing costs, and enhancing battery safety and stability.
WO2026143715A1PCT designated stage Publication Date: 2026-07-09HUBEI WANRUN NEW ENERGY TECH CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HUBEI WANRUN NEW ENERGY TECH CO LTD
- Filing Date
- 2025-01-06
- Publication Date
- 2026-07-09
Smart Images
Figure CN2025070788_09072026_PF_FP_ABST
Abstract
The present application belongs to the technical field of energy storage, and provides a lithium-replenishing agent. The lithium-replenishing agent comprises lithium phosphite and a coating layer that coats the surface of the lithium phosphite, wherein the material of the coating layer comprises iron boride. The present application is beneficial for solving the problems of relatively poor safety and stability, high costs, the generation of residues during lithium replenishing, etc., of lithium-replenishing materials in the related art.
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