An all-electrochem-active silicon anode enabled by spontaneous Li–Si alloying for ultra-high performance solid-state batteries
Zhiyong Zhang, Zhefei Sun, Xiang Han, Yan Liu, Shanpeng Pei, Yahui Li, Linshan Luo, Pengfei Su, Chaofei Lan, Ziqi Zhang, Shaowen Xu, Shengshi Guo, Wei Huang, Songyan Chen, Ming‐Sheng Wang
Abstract
An all-electrochem-active Si/Li 21 Si 5 anode was designed, in which the Li 21 Si 5 served as efficient ionic/electronic channel and expansion buffer. It achieved an ultra-high ICE of 97.8% and a low expansion rate of 18.8% at a capacity of 17.9 mA h cm −2 .
Topics & Concepts
AnodeSiliconMaterials scienceSolid-stateIonic bondingOptoelectronicsChemical engineeringAnalytical Chemistry (journal)IonChemistryChromatographyPhysical chemistryElectrodeOrganic chemistryEngineeringAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesSupercapacitor Materials and Fabrication