Positive plate of sodium-ion battery, sodium-ion battery and preparation method of positive plate

• Main Author: ZHOU GUANGGAI
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a positive plate of a sodium-ion battery, the sodium-ion battery and a preparation method of the positive plate. The positive plate comprises a positive current collector, a positive membrane plate and a conductive coating layer, wherein the positive membrane plate coats the surface of the positive current collector and contains a positive active material, and the conductive coating layer coats the surface of the positive membrane plate and contains a conductive high polymer material. The sodium-ion battery comprises the positive plate. The conductive coating layer and the positive current collector form a dual-conductive layer, so that the conductivity of the positive plate is obviously improved, the internal resistance of the battery is reduced, and the battery has relatively high rate capability; and furthermore, the positive membrane plate can be well protected by the conductive coating layer, so that the cycle life of the battery is prolonged. 本发明公开了种钠离子电池正极片、电池及其制备方法。正极极片包括：正极集流体