Climate Change Data Portal
DOI | 10.1016/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 |
ISSN | 20959273 |
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。