Chinese researchers propose a new strategy for interface regulation in solid-state lithium batteries
Source: Xinhua News Agency
Xinhua News Agency, Beijing, October 2nd (Reporter: Hu Zhe) From the Chinese Academy of Sciences Institute of Metal Research, it was learned that the research team recently made breakthroughs in the field of solid-state lithium batteries, providing a new approach to solve the key problems of high interfacial impedance and low ion transport efficiency in solid-state batteries. The research results have been published in the international academic journal "Advanced Materials" recently.
Due to its high safety and high energy density, solid-state lithium batteries are considered an important development direction for next-generation energy storage technology. However, in traditional solid-state batteries, poor contact between electrodes and electrolytes leads to large ion transport resistance and low efficiency, seriously restricting their practical applications.
The research team used the design flexibility of polymer molecules, introducing both ethoxy groups with ion-conducting functions and short sulfur chains with electrochemical activity on the main chain, to prepare a new material that achieves interface integration at the molecular scale. This material not only has high ion transport capacity, but can also achieve controllable switching of ion transport and storage behavior in different potential ranges.
Researchers introduced that the integrated flexible battery constructed based on this material shows excellent bending resistance, which can withstand 20,000 repeated bends. When used as a polymer electrolyte in a composite cathode, the energy density of the composite cathode increased by 86%. This study provides new material design ideas and research paradigms for developing high-performance, high-safety solid-state batteries.
Original article: www.toutiao.com/article/1844850541540489/
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