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Hierarchically Designed Germanium Microcubes with High Initial Coulombic Efficiency toward Highly Reversible Lithium Storage
Zhang, Chuanjian1; Lin, Zhou1; Yang, Zhenzhong2; Xiao, Dongdong2; Hu, Pu1; Xu, Hongxia1; Duan, Yulong1; Pang, Shuping1; Gu, Lin2; Cui, Guanglei1
2015-03-24
发表期刊CHEMISTRY OF MATERIALS
卷号27期号:6页码:2189-2194
摘要

Germanium has been investigated intensively for its high specific capacity and tough nature, which make it a promising candidate anode for high energy lithium-ion batteries. However, the rational design of a germanium electrode with enhanced electrochemical performances is still a big challenge. Herein, we designed and synthesized germanium microcubes with a hierarchical structure directly on titanium foil via a simple hydrogen reduction method. An ultrahigh initial Coulombic efficiency of 91.8% was acquired due to the high crystallinity of germanium for reversible lithium insertion and extraction, less adverse side reaction for irreversible lithium loss, and unique hierarchical structure for easier electrolyte penetration. In addition, the Li2CO3-predominated solid electrolyte interface contributes significantly to the excellent cycling and rate performances of the anode. Both half and full cell performances demonstrate that germanium has potential applications in high-performance lithium-ion batteries.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.chemmater.5b00218
关键词[WOS]HIGH-CAPACITY ANODES ; ION BATTERY ANODES ; SOLID-ELECTROLYTE ; PERFORMANCE ; SILICON ; OXIDE ; GE ; NANOPARTICLES ; NANOSTRUCTURES ; NETWORKS
收录类别SCI
语种英语
WOS研究方向Chemistry ; Materials Science
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号WOS:000351971600037
引用统计
被引频次:53[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/6417
专题仿生能源与储能系统团队
作者单位1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Ind Energy Storage Res Inst, Qingdao 266101, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing Lab Electron Microscopy, Beijing 100190, Peoples R China
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GB/T 7714
Zhang, Chuanjian,Lin, Zhou,Yang, Zhenzhong,et al. Hierarchically Designed Germanium Microcubes with High Initial Coulombic Efficiency toward Highly Reversible Lithium Storage[J]. CHEMISTRY OF MATERIALS,2015,27(6):2189-2194.
APA Zhang, Chuanjian.,Lin, Zhou.,Yang, Zhenzhong.,Xiao, Dongdong.,Hu, Pu.,...&Cui, Guanglei.(2015).Hierarchically Designed Germanium Microcubes with High Initial Coulombic Efficiency toward Highly Reversible Lithium Storage.CHEMISTRY OF MATERIALS,27(6),2189-2194.
MLA Zhang, Chuanjian,et al."Hierarchically Designed Germanium Microcubes with High Initial Coulombic Efficiency toward Highly Reversible Lithium Storage".CHEMISTRY OF MATERIALS 27.6(2015):2189-2194.
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