Interfacial engineering of Si anodes by confined doping of Co toward high initial coulombic efficiency
Yuanyuan Han, Haoyu Fu, Guihuan Chen, Xiaoshan Wang, Yue Zhao, Xiang Sui, Zhiqiang Zhao, Xiancheng Sang, Qinghao Li, Qiang Li, Qiang Li, Qiang Li
Abstract
magnetometry revealed the stability of the Si-Co layers during cycling. The symmetrical Si-Co layers can protect the overall structure of the Si anodes and facilitate electron conduction. Consequently, the resultant Si anode delivers an impressive initial coulombic efficiency of 93.4% with large capacity retention of 85.07% after 100 cycles.
Topics & Concepts
Faraday efficiencyDopingAnodeMaterials scienceChemical engineeringNanotechnologyEngineering physicsChemical physicsChemistryOptoelectronicsElectrodePhysicsPhysical chemistryEngineeringSemiconductor materials and devicesAdvancements in Battery MaterialsSemiconductor materials and interfaces