Li-rich Li-Si alloy as a lithium-containing negative electrode material towards high energy lithium-ion batteries.

ABSTRACT: Lithium-ion batteries (LIBs) are generally constructed by lithium-including positive electrode materials, such as LiCoO2, and lithium-free negative electrode materials, such as graphite. Recently, lithium-free positive electrode materials, such as sulfur, are gathering great attention from their very high capacities, thereby significantly increasing the energy density of LIBs. Though the lithium-free materials need to be combined with lithium-containing negative electrode materials, the latter has not been well developed yet. In this work, the feasibility of Li-rich Li-Si alloy is examined as a lithium-containing negative electrode material. Li-rich Li-Si alloy is prepared by the melt-solidification of Li and Si metals with the composition of Li21Si5. By repeating delithiation/lithiation c

SUBMITTER: Iwamura S 

PROVIDER: S-EPMC4308695 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature