Positive electrode material with lithium-poor, sodium-poor or potassium-poor surface, plasma enhanced sintering method of positive electrode material and application of positive electrode material

• Main Authors: SHI SHUMIN, HUANG ZHENDONG, CAI YUQING, BAI LING
• Format: Patent
• Language: Chinese; English
• Published: 27.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a positive electrode material poor in lithium, sodium or potassium on the surface and a plasma enhanced sintering method and application thereof, and belongs to the field of electrochemical energy storage. The preparation method comprises the following steps: putting raw materials into plasma equipment, introducing required gas, exhausting air by using a vacuum pump, and adjusting the working frequency of the plasma equipment and the temperature and sintering time of a high-temperature sintering device, thereby finally obtaining the electrode material with poor lithium, poor sodium or poor potassium on the surface. The temperature required by the sintering reaction is reduced, the reaction time is shortened, the preparation cost is greatly reduced, resources are saved, and the method has an excellent industrial prospect. The prepared material has the characteristics of poor lithium, poor sodium or poor potassium on the surface, is not easy to absorb moisture, and is convenient to prepa