Melt-spun Al70−X Si30Mn X (X=0, 3, 5, 7, 10) anode in lithium-ion batteries

Autor:	Zhanbo Sun, Yaomin Zhu, Xiaoping Song, Yan Li, Qing Hu, XiaoDong Wang, XuePeng Li, Mingshu Zhao
Rok vydání:	2008
Předmět:	Materials science Chemical substance Metallurgy Alloy chemistry.chemical_element engineering.material Microstructure Electrochemistry Anode chemistry Chemical engineering Nano engineering Lithium Melt spinning
Zdroj:	Science in China Series E: Technological Sciences. 52:2288-2294
ISSN:	1862-281X 1006-9321
DOI:	10.1007/s11431-008-0188-4
Popis:	Al70−XSi30MnX (X=0, 3, 5, 7, 10, mol%) ribbons were prepared by melt spinning. A supersaturated solid solution of Si and Mn in fcc Al and some microstructures consisting of nano grains were obtained. Some alloys with nano-sized grains exhibited high discharge capacities and favorable cycle properties. The capacity of more than 400 mAh/g could be obtained in melt-spun Al67Si30Mn3 alloy after 20 cycles and more than 300 mAh/g after 40 cycles. Li/Si and Li/Al compounds in the anodes of pure Al and pure Si were not detected in Al-Si-Mn alloys inserted by Li. It is considered that the formation of the supersaturated solid solution and refinement of microstructures have prevented the alloys from the forming the compounds with superfluous Li. As a result, the electrochemical properties have been improved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::18d33f666d88143987e0890756e1f9ed https://doi.org/10.1007/s11431-008-0188-4 Zobrazit plný text záznamu