Cu–Al–Si alloy anode material with enhanced electrochemical properties for lithium ion batteries

Autor:	Lin Ma, Yien Liu, Pengcheng Hu, Youhong Wang, Jia Zhao, Junting Zhang, Huilin Fan, Mingxiang Yu, Kangkang Wang, Peng Zhang
Rok vydání:	2019
Předmět:	Materials science Alloy chemistry.chemical_element engineering.material Electrochemistry Microstructure Lithium-ion battery Anode Ion chemistry Chemical engineering engineering Particle General Materials Science Lithium
Zdroj:	Functional Materials Letters. 12:1950054
ISSN:	1793-7213 1793-6047
Popis:	The microstructure and electrochemical property of Cu–Al–Si alloy anode material are studied in this paper. The research shows that the alloy particle has a basic circular outline, and two copper-rich phases with different silicon contents are detected in the particle, and both phases with nanostructure are observed in its surface layer. The nano-silicon alloy negative electrode material needs to be used in a certain proportion with graphite, binder and conductive agent, and the stirring process also has an important influence on its electrochemical performance. Multiple mixing can achieve a better cycle retention compared to direct mixing. The first-cycle coulombic efficiency of the electrode material is improved up to about 90%, and the specific capacity is still higher than 500[Formula: see text]mAh[Formula: see text]g[Formula: see text] after 100 cycles. The battery manufacturing process is similar to the graphite negative electrode, so it is easy to be applied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7e63d4b3827f0b4243aae0b3034148dd https://doi.org/10.1142/s1793604719500541 Zobrazit plný text záznamu