Lithium battery safety cutting-edge technology

　　With the large-scale market promotion of new energy vehicles, the safety of lithium-ion batteries has become a hot topic in the industry. At the 2013 (8th) Beijing International Forum on Power Lithium-ion Battery Technology and Industry Development and the Chinese Academy of Engineering Lithium-ion Safety Engineering Frontier Technology Seminar held in Beijing on the eve of the National Day, Chinese and foreign experts focused on the safety and development prospects of lithium-ion batteries. held a lively discussion and shared cutting-edge research results related to lithium battery materials.

　　Although lithium-ion batteries have outstanding advantages such as high energy density, long cycle life, small self-discharge rate, no memory effect and green environmental protection, they have become the first choice for new energy vehicle power batteries. However, during the demonstration and promotion process of new energy vehicles, due to Reports of safety accidents caused by lithium-ion batteries are common. Each accident triggers social concerns about the development of new energy vehicles. Battery safety has become a key issue for lithium-ion batteries that needs to be solved urgently.

　　Wu Feng, chairman of the forum and professor at Beijing Institute of Technology, said that in recent years, my country's power lithium-ion battery industry has developed rapidly. Great progress has been made in improving performance, but it is still difficult to meet the needs of large-scale market promotion of new energy vehicles. Batteries need to be comprehensively improved in terms of comprehensive performance and cost-effectiveness.

　　Experts in the field of lithium-ion battery materials also exchanged views on high-safety lithium battery separators and electrolyte materials, high-capacity cathode and anode materials and high-voltage electrolytes for plug-in hybrids and electric vehicles, and high-capacity alloy anode materials. Conductive binders, as well as room temperature lithium-sulfur batteries and sodium-ion batteries for energy storage, silicon-based and lithium titanate anode materials, and new hydrophilic polytetrafluoroethylene-supported cross-linked copolymer gel polymer electrolyte systems and other latest research results, imagining the future development direction of lithium-ion battery materials. In addition, power battery safety test evaluation and standardization research have also become a focus of experts.

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