Wenzhou Hongfeng subsidiary successfully breaks through the manufacturing technology of 4μm medium-resistant and 5μm high-resistant ultra-thin copper foil

In recent years, with the rapid development of new energy vehicles and green energy storage industries, the total installed capacity of lithium-ion batteries has shown explosive growth, thus promoting the rapid growth of the lithium battery copper foil industry. Facing the performance requirements of high energy density, high safety and long life of lithium-ion batteries, lithium battery copper foil is developing in the direction of "extremely thin, high tensile strength and high elongation".

The high-tensile copper foil has tensile strength and combines good elongation, stable heat resistance, and appearance quality. It fully meets the production needs of high-performance lithium-ion batteries and belongs to the copper foil industry. New high-end products. However, the production of high-tensile copper foil is difficult, especially in terms of production equipment and process technology.

Based on the actual needs of the market and customers, with the joint efforts of the technical team and the production team, Jiangxi Hongfeng Copper Foil Co., Ltd. (hereinafter referred to as "Hongfeng Copper Foil"), a subsidiary of Wenzhou Hongfeng, has given full play to its own technological research and development advantages. The existing equipment has been upgraded and the production process has been optimized to achieve conditions that can produce 4 μm medium tensile strength copper foil and 5 μm high tensile strength ultra-thin copper foil. This also means that the technical level and product development capabilities of Hongfeng Copper Foil have reached a new level.

From the production of 6μm lithium battery copper foil to the successful development of 4μm medium resistance and 5μm high tensile ultra-thin copper foil, Hongfeng Copper Foil continues to meet the current high energy density development of automotive power batteries with its increasingly mature and stable scientific research and innovation system and production process system. The high-performance requirements for extremely thin copper foil for negative electrode current collectors will contribute greatly to the high-quality development of the national new energy automobile industry and high-end metal new material industry.