Batteries are the "heart" of new energy vehicles and home appliances, and battery life has a great impact on consumers' purchase intentions. As market demand for battery life continues to improve, high energy density has become a major development trend in battery technology. Scientists have made a breakthrough in lithium battery anode materials and invented a new material preparation method that can effectively improve them to solve safety problems such as failure and explosion during battery use. battery life.
The study was jointly conducted by Professor Huang Fuqiang of Peking University, Professor Li Ju of the Massachusetts Institute of Technology, and Assistant Professor Dong Yanhao of Tsinghua University. The related research results were published in the online edition of 'Natural Energy'13, an international academic journal.
High voltage is one of the important ways to increase the energy density of batteries. However, lithium batteries face safety problems such as the crystal structure of the cathode material being broken, the electrolyte being decomposed, and gas being generated inside the battery and its volume expanding when the voltage is high. To solve the problem mentioned above, the research team invented a new method called "lanthanum penetration" of ion exchange preparation. . , greatly improved the indicators of the material. Durability of cycling at high voltage.
Nature Energy experts have discovered that the research team is designing a 'quasi-epitaxial' structure of the anode material of a three-dimensional compressed perovskite lithium battery layer and a novel method of manufacturing 'lanthanum'. I believe you suggested the idea. method is excellent. A key innovation in the research is the application of a highly uniform coating of ultrathin perovskite nanolayers, which is highly controllable and effectively suppresses oxygen release in the material.
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