一种补锂剂及其制备方法与应用
By embedding lithium carbonate in superabsorbent resin and combining it with porous carbon materials, the problems of lithium-ion consumption and low electrochemical activity of self-sacrificing materials in lithium-ion batteries are solved, the energy density and cycle performance of batteries are improved, and low-cost lithium replenishment agent preparation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEFEI GUOXUAN HIGH TECH POWER ENERGY
- Filing Date
- 2023-07-07
- Publication Date
- 2026-07-17
AI Technical Summary
In existing lithium-ion batteries, the solid electrolyte film formed on the negative electrode surface during the formation stage consumes lithium ions, leading to capacity decay of the positive electrode material and a decrease in battery energy density. The self-sacrificing material has low electrochemical activity, and the lattice oxygen generated during decomposition erodes the electrolyte, resulting in poor contact at the reaction contact points and affecting battery performance.
By encapsulating lithium carbonate in superabsorbent resin and combining it with porous carbon materials, the conductivity and electrochemical activity of lithium carbonate are improved. Furthermore, the porous carbon is used to adsorb lattice oxygen and inhibit its reaction with the electrolyte, thus preparing a lithium replenishing agent.
It significantly improves the conductivity and electrochemical activity of lithium carbonate, enhances the energy density and cycle performance of batteries, reduces the decomposition voltage, and is suitable for mass production without the need to upgrade existing lithium battery production lines.
Smart Images
Figure CN116799184B_ABST