摘要:
A method for improving the environmental stability of cathode materials used in lithium-based batteries. Most currently used cathode active materials are acutely sensitive to environmental conditions, e.g. leading to moisture and CO2 pickup, that cause problems for material handling especially during electrode preparation and to gassing during charge and discharge cycles. Binder materials used for making cathodes, such as PVDF and PTFE, are mixed with and/or coated on the cathode materials to improve the environmental sensitivity of the cathode materials.
摘要:
A low temperature contaminant limiting process for lithiating hydroxides and forming lithiated metal oxides of suitable crystalinity in-situ. M(OH)2 is added to an aqueous solution of LiOH. An oxidant is introduced into the solution which is heated below about 150° C. and, if necessary, agitated. M may be selected from cobalt, nickel and manganese. The resultant LiMO2 becomes crystallized in-situ and is subsequently removed.
摘要翻译:用于锂化氢氧化物的低温污染物限制方法,并原位形成适当结晶度的锂化金属氧化物。 向LiOH的水溶液中加入M(OH)2 N。 将氧化剂引入溶液中,该溶液被加热至低于约150℃,如果需要,将其搅拌。 M可以选自钴,镍和锰。 所得LiMO 2 N 2原位结晶并随后除去。