Researchers propose a new lithium anode framework configuration.-Hongguang Lithium_Anode materials for lithium-ion batteries

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Researchers propose a new lithium anode framework configuration.

2023-07-07

Recently, the Materials Research Center of the Institute of Modern Physics at the Chinese Academy of Sciences, in collaboration with Beijing University of Aeronautics and Astronautics, has proposed a novel three-dimensional lithium anode framework configuration using nuclear track technology. The related findings have been published in Advanced Energy Materials.

Exploring the ideal framework structure for high-performance battery anode materials is currently a cutting-edge scientific challenge at the international level. Lithium-metal anodes are considered ideal anode materials for next-generation lithium batteries; however, issues such as dendrite formation during cycling have hindered their commercialization. Therefore, identifying lithium anode framework structures that simultaneously offer high energy density, high power density, and excellent cycling stability is of great significance for the development of high-performance lithium-ion batteries.

Based on the Lanzhou Heavy Ion Research Facility (HIRFL), researchers have developed a novel three-dimensional porous composite framework structure using nuclear track technology. This structure consists of a three-dimensional nano-copper skeleton with uniformly distributed lithium-affinity sites, which is combined with lithium metal to serve as the negative electrode for lithium-ion batteries. The composite framework exhibits an exceptionally long cycle life of over 2,000 hours and outstanding high-rate performance. Even under conditions of high areal capacity and high current density, the composite negative electrode maintains stable cycling performance after 600 hours of operation.

Compared with other framework structures made of the same material, this three-dimensional porous composite framework significantly enhances the electrochemical performance of lithium-ion batteries. Further research indicates that the composite framework’s excellent mechanical strength, high porosity, and low pore tortuosity are the primary factors contributing to the improved battery performance.

This work introduces nuclear track technology into the field of electrode materials and proposes a novel framework configuration for metallic lithium anodes. This development is of great significance for the exploration of high-performance anode materials, facilitating the investigation of specific morphologies of ideal anode framework structures and sparking further discussions and reflections among researchers on lithium anode framework configurations. It will contribute to addressing key challenges associated with lithium-metal anodes and promoting advancements in the energy-storage field.

This research was supported by the National Natural Science Foundation of China Joint Fund Project and the Chinese Academy of Sciences’ Key Research Program in Frontier Sciences.

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