CCPortal
DOI10.1016/j.scib.2020.05.018
A thick yet dense silicon anode with enhanced interface stability in lithium storage evidenced by in situ TEM observations
Han J.; Tang D.-M.; Kong D.; Chen F.; Xiao J.; Zhao Z.; Pan S.; Wu S.; Yang Q.-H.
发表日期2020
ISSN20959273
起始页码1563
结束页码1569
卷号65期号:18
英文摘要Increasing the density and thickness of electrodes is required to maximize the volumetric energy density of lithium-ion batteries for practical applications. However, dense and thick electrodes, especially high-mass-content (>50 wt%) silicon anodes, have poor mechanical stability due to the presence of a large number of unstable interfaces between the silicon and conducting components during cycling. Here we report a network of mechanically robust carbon cages produced by the capillary shrinkage of graphene hydrogels that can contain the silicon nanoparticles in the cages and stabilize the silicon/carbon interfaces. In situ transmission electron microscope characterizations including compression and tearing of the structure and lithiation-induced silicon expansion experiments, have provided insight into the excellent confinement and buffering ability of this interface-strengthened graphene-caged silicon nanoparticle anode material. Consequently, a dense and thick silicon anode with reduced thickness fluctuations has been shown to deliver both high volumetric (>1000 mAh cm−3) and areal (>6 mAh cm−2) capacities together with excellent cycling capability. © 2020 Science China Press
关键词Dense and thick electrodesIn situ TEMInterface stabilityLithium-ion batterySilicon anode
英文关键词Graphene; In situ processing; Lithium-ion batteries; Mechanical stability; Nanoparticles; Silicon; Transmission electron microscopy; Graphene hydrogels; Interface stabilities; Lithium storages; Mechanically robust; Silicon nanoparticles; Thickness fluctuations; Unstable interfaces; Volumetric energy densities; Anodes
语种英语
来源期刊Science Bulletin
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/207051
作者单位Nanoyang Group, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300350, China; International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan; CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China; Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
推荐引用方式
GB/T 7714
Han J.,Tang D.-M.,Kong D.,et al. A thick yet dense silicon anode with enhanced interface stability in lithium storage evidenced by in situ TEM observations[J],2020,65(18).
APA Han J..,Tang D.-M..,Kong D..,Chen F..,Xiao J..,...&Yang Q.-H..(2020).A thick yet dense silicon anode with enhanced interface stability in lithium storage evidenced by in situ TEM observations.Science Bulletin,65(18).
MLA Han J.,et al."A thick yet dense silicon anode with enhanced interface stability in lithium storage evidenced by in situ TEM observations".Science Bulletin 65.18(2020).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Han J.]的文章
[Tang D.-M.]的文章
[Kong D.]的文章
百度学术
百度学术中相似的文章
[Han J.]的文章
[Tang D.-M.]的文章
[Kong D.]的文章
必应学术
必应学术中相似的文章
[Han J.]的文章
[Tang D.-M.]的文章
[Kong D.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。