title: High volumetric capacity silicon-based lithium battery anodes by nanoscale system engineering.
abstract: The nanostructuring of silicon (Si) has recently received great attention, as it holds potential to deal with the dramatic volume change of Si and thus improve lithium storage performance. Unfortunately, such transformative materials design principle has generally been plagued by the relatively low tap density of Si and hence mediocre volumetric capacity (and also volumetric energy density) of the battery. Here, we propose and demonstrate an electrode consisting of a textured silicon@graphitic carbon nanowire array. Such a unique electrode structure is designed based on a nanoscale system engineering strategy. The resultant electrode prototype exhibits unprecedented lithium storage performance, especially in terms of volumetric capacity, without the expense of compromising other components of the battery. The fabrication method is simple and scalable, providing new avenues for the rational engineering of Si-based electrodes simultaneously at the individual materials unit scale and the materials ensemble scale.
authors.affiliation: National Center for Nanoscience and Technology , No. 11, Beiyitiao, zhongguancun, Beijing, 100190 People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.forename: Xianglong
authors.initials: X
authors.lastname: Li
authors.forename: Tengfei
authors.initials: T
authors.lastname: Qiu
authors.forename: Bin
authors.initials: B
authors.lastname: Luo
authors.forename: Jing
authors.initials: J
authors.lastname: Ning
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Xianfeng
authors.initials: X
authors.lastname: Zhang
authors.forename: Minghui
authors.initials: M
authors.lastname: Liang
authors.forename: Linjie
authors.initials: L
authors.lastname: Zhi