Low-temperature high-power lithium-manganese battery and preparation method thereof

• Main Authors: HUANG YAOZE, HUANG BIYING, TANG TIANWEN
• Format: Patent
• Language: Chinese; English
• Published: 15.12.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a low-temperature high-power lithium-manganese battery and a preparation method thereof, the low-temperature high-power lithium-manganese battery is applied to a temperature environment of -40 DEG C, and the discharge current is greater than 3C. The lithium-manganese battery comprises a positive plate, a negative plate, a ceramic diaphragm, an electrolyte and a battery shell, wherein the positive plate, the ceramic diaphragm, the negative plate and the ceramic diaphragm are sequentially and repeatedly laminated to form a dry cell; the lithium-manganese battery is prepared by putting a dry battery cell into a battery shell, injecting an electrolyte, ageing, sealing and ageing, the positive plate and the negative plate are respectively a graphene-based manganese dioxide positive plate and a lithium-carbon composite negative plate, and positive plate reserved tabs are arranged on the front surface and the back surface of the positive plate; and the front and back surfaces of the negative