Hydrogen silsequioxane-derived Si/SiO(x) nanospheres for high-capacity lithium storage materials.
Si/SiOx composite materials have been explored for their commercial possibility as high-performance anode materials for lithium ion batteries, but suffer from the complexity of and limited synthetic routes for their preparation. In this study, Si/SiOx nanospheres were developed using a nontoxic and precious-metal-free preparation method based on hydrogen silsesquioxane obtained from sol-gel reaction of triethoxysilane. The resulting Si/SiOx nanospheres with a uniform carbon coating layer show excellent cycle performance and rate capability with high-dimensional stability. This approach based on a scalable sol-gel reaction enables not only the development of Si/SiOx with various nanostructured forms, but also reduced production cost for mass production of nanostructured Si/SiOx.
Advanced Batteries Research Center, Korea Electronic Technology Institute , 68 Yatap-dong, Bundang-gu, Seongnam 463-816, Republic of Korea.
Min-Sik
MS
Park
Eunjun
E
Park
Jaewoo
J
Lee
Goojin
G
Jeong
Ki Jae
KJ
Kim
Jung Ho
JH
Kim
Young-Jun
YJ
Kim
Hansu
H
Kim