Enhancing Delithiation Reversibility of Li

Autor: Chuanhai, Gan, Chengkun, Zhang, Weidong, Wen, Yingkuan, Liu, Juan, Chen, Qingshui, Xie, Xuetao, Luo
Rok vydání: 2019
Zdroj: ACS applied materialsinterfaces. 11(39)
ISSN: 1944-8252
Popis: Silicon nanoparticles (SiNPs) with a median size of 51 nm are prepared by the sand mill from waste silicon, and then carbon-interweaved SiNPs/graphite anode materials are designed. Because of the size of SiNPs is restricted below a critical fracture size of 150 nm as well as the rational decoration of carbon and graphite, fracture of SiNPs, and volume deformation of active materials are highly alleviated, leading to low impedance, enhanced electrochemical reaction kinetics, and good electronic connection between active materials and current collector. Furthermore, delithiation reversibility of the formed crystalline Li
Databáze: OpenAIRE