US Patent Application 17827173. DEGRADATION-RESISTANT COATING FOR CATHODES simplified abstract
Contents
DEGRADATION-RESISTANT COATING FOR CATHODES
Organization Name
Inventor(s)
Tae Kyoung Kim of Sunnyvale CA (US)
Ki Tae Park of Santa Clara CA (US)
DEGRADATION-RESISTANT COATING FOR CATHODES - A simplified explanation of the abstract
This abstract first appeared for US patent application 17827173 titled 'DEGRADATION-RESISTANT COATING FOR CATHODES
Simplified Explanation
- The patent application is about coating materials for cathode active materials in lithium ion batteries (LIBs). - The coatings are made of lithium transition metal phosphorous oxide materials (Li-M-P-O). - These coatings are stable when used with cathode active materials that have a layered-type structure, such as lithium nickel-manganese-cobalt oxide materials. - The coatings are also reactive with battery degradation materials, such as HF and PF, and can remove them from the electrolyte. - The coating materials can be applied to current collectors and other internal components of the LIB. - Specific materials identified as having desirable properties include LiMnPO, LiCoPO, LiNiPO, LiSnPO, LiV(PO), LiCrPO, LiMn(PO), LiMnPO, LiFePO, and LiCo(PO). - Combinations of these materials with LiFePO were also identified.
Original Abstract Submitted
This disclosure is generally directed to coating materials for cathode active materials for lithium ion batteries (LIBs) and the methods used to identify such coating materials. The coatings are lithium transition metal phosphorous oxide materials (Li-M-P-O) that are stable to cycling with cathode active materials having a layered-type structure such as lithium nickel-manganese-cobalt oxide materials and they are reactive with battery degradation materials (i.e., HF, PF, etc.) to scavenge those materials from the electrolyte. The coating materials may also be applied to current collectors, or other internal components of the LIB. Exemplary specific materials identified as having desirable properties are: LiMnPO, LiCoPO, LiNiPO, LiSnPO, LiV(PO), LiCrPO, LiMn(PO), LiMnPO, LiFePO, and LiCo(PO); also identified were combinations of such materials with LiFePO.
