High-performance and low-cost lithium ion power battery and preparation method thereof

• Main Authors: ZHAO CHENGLONG, CHENG KAI, CHEN MENGTING, LIU XIA, HU TONGFEI
• Format: Patent
• Language: Chinese; English
• Published: 20.07.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a high performance and low cost lithium ion power battery. The high performance and low cost lithium ion power battery comprises a positive electrode composite material and a positive electrode current collector, and a negative plate of the high-performance and low-cost lithium ion power battery comprises a negative electrode composite material and a negative electrode current collector; the positive electrode composite material comprises a ternary composite material, lithium manganate, a positive electrode conductive agent and a positive electrode binder, and the ternary composite material is composed of NCM811 and NCM523; in the positive electrode composite material, the mass percent of the NCM 811 to the NCM 523 to the lithium manganate is (50%-70%): (20%-40%): (10%) respectively; the negative electrode composite material comprises a graphite composite material, silicon monoxide, a negative electrode conductive agent and a negative electrode binder, the graphite composite material i