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On July 8, the world’s first graphene-based lithium-ion battery product was released in Beijing. Experts believe that the successful development of this product has completely opened up the application space for graphene in consumer electronics lithium-ion batteries, power lithium batteries, and lithium batteries in energy storage.
The first graphene-based lithium-ion battery product was launched by Shanghai-based carbon source Huigu, a subsidiary of the listed company Dongxu Optoelectronics, and was named “king kingâ€. The product has excellent performance and can work in the environment of -30°C-80°C. The cycle life of the battery is as high as 3,500 times, and the charging efficiency is 24 times that of ordinary charging products.
In fact, the charge-discharge rate of Li-ion batteries is determined by the speed of lithium ion transport and deintercalation in the electrodes. Graphene has excellent electron and ion conductivity properties and a special two-dimensional single-atom layer structure that can be used in electrode material particles. As a three-dimensional electron and ion transport network structure, graphene materials can be successfully used in lithium-ion batteries, which can greatly increase the charge-discharge rate of lithium-ion batteries, achieve a significant breakthrough in battery technology, and promote the leap forward in new energy industries. Development.
According to Li Zhaoting, chairman of Dongxu Group, the Shanghai carbon source Huigu is a high-tech enterprise specializing in large-scale preparation of graphene and application technology development, and is currently the only domestic company capable of achieving low-cost, high-quality, single-layer graphene scale. Chemical preparation (annual output up to tons). Among them, the rate of graphene monolayer prepared by the trial production line was over 99% and the purity was as high as 99.9%.
Professor Shouwu Wu, chief scientist of Shanghai Carbon Source Huigu, said that the graphene-based lithium-ion battery technology released this time not only solved the problem of fast charging of lithium-ion batteries, but also broke through the international "carbon coated lithium iron phosphate technology" Technical blockade.
At the press conference, Dongxu Optoelectronics and the Taizhou New Energy Industrial Park Management Committee signed an agreement on the landing of the "King Wang" production line, and signed strategic cooperation agreements on R&D and industrialization with downstream application companies such as Kay Energy of the United States.
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