Recently, Wang Zhenyang's team of researchers from the Institute of Solids of the Hefei Institute of Materials Science of the Chinese Academy of Sciences made a series of advances in the field of silicon-carbon composite anode materials for lithium-ion batteries. In response to the bottleneck of unstable interfaces of silicon-based materials, the team innovatively proposed a laser-guided covalent bonding strategy and a hierarchical double coating collaborative control strategy, which significantly improved the cycle stability and electrochemical performance of the battery. In response to the intrinsic stability problem of silicon-carbon interfaces, the research team first developed a laser-guided covalent bonding strategy. The experimental results showed that the optimized SiOx/nLig -8% composite anode had a capacity retention rate of 91.3% after 1,000 cycles at a high current density of 2.0 A/g, showing excellent long-term cycle stability. Furthermore, in order to further solve the problems of mechanical stability and ion transmission efficiency of traditional SEI layers, the team proposed a cooperative control strategy using polyaniline and laser-induced graphene hierarchical double coatings through multi-dimensional exploration. Through multi-scale interface engineering control strategies, the above two tasks achieved collaborative optimization from chemical bonding and anchoring to macrostructural stress dissipation, effectively solved the problem of unstable silicon-based materials, and provided new ideas for the development of lithium-ion battery anode materials with long life and high energy density.

Recently, Wang Zhenyang's team of researchers from the Institute of Solids of the Hefei Institute of Materials Science of the Chinese Academy of Sciences made a series of advances in the field of silicon-carbon composite anode materials for lithium-ion batteries. In response to the bottleneck of unstable interfaces of silicon-based materials, the team innovatively proposed a laser-guided covalent bonding strategy and a hierarchical double coating collaborative control strategy, which significantly improved the cycle stability and electrochemical performance of the battery. In response to the intrinsic stability problem of silicon-carbon interfaces, the research team first developed a laser-guided covalent bonding strategy. The experimental results showed that the optimized SiOx/nLig -8% composite anode had a capacity retention rate of 91.3% after 1,000 cycles at a high current density of 2.0 A/g, showing excellent long-term cycle stability. Furthermore, in order to further solve the problems of mechanical stability and ion transmission efficiency of traditional SEI layers, the team proposed a cooperative control strategy using polyaniline and laser-induced graphene hierarchical double coatings through multi-dimensional exploration. Through multi-scale interface engineering control strategies, the above two tasks achieved collaborative optimization from chemical bonding and anchoring to macrostructural stress dissipation, effectively solved the problem of unstable silicon-based materials, and provided new ideas for the development of lithium-ion battery anode materials with long life and high energy density.