High-load positive pole piece of lithium ion battery and lithium ion battery

• Main Authors: ZHANG KAI, HU BEN, REN NING, SHE YIHONG, LU PENGFEI, WU NIU
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to the technical field of lithium ion batteries, and discloses a high-load positive pole piece of a lithium ion battery in order to solve the problem that in the prior art, the high-load capacity of an active substance of a positive pole piece is incompatible with other properties of the lithium ion battery, a current collector of the high-load positive pole piece is foamed aluminum, and the active material exists in a foam layer of the foamed aluminum. And the loading capacity of the high-loading-capacity positive pole piece is not less than 30mg/cm < 2 >. The active substance of the positive pole piece is high in load capacity and low in internal resistance, and can give consideration to high energy density, power performance and cycle performance when applied to the lithium ion battery. 本发明涉及锂离子电池技术领域，为解决现有技术下正极极片活性物质高载料量与锂离子电池其它性能不兼容的问题，公开了一种锂离子电池高载量正极极片，所述高载量正极极片的集流体为泡沫铝，活性材料存在泡沫铝的泡沫层内，所述高载量正极极片载料量不低于30mg/cm2。该正极极片的活性物质的载重量高，并内阻低，应用于锂离子电池中可兼顾高能量密度、功率性能和循环性能。