Nanostructured Sn-Mo multilayer film anode with stable electrode-interfaces for long-cycle lithium storage
作者:Lan, XX (Lan, Xuexia)[ 1 ] ; Cui, J (Cui, Jie)[ 2 ] ; Yu, HC (Yu, Hechuan)[ 1 ] ; Xiong, XY (Xiong, XingYu)[ 1 ] ; Tan, L (Tan, Liang)[ 1 ] ; Hu, RZ (Hu, Renzong)[ 1 ]
JOURNAL OF POWER SOURCES
卷: 509
文献号: 230391
DOI: 10.1016/j.jpowsour.2021.230391
出版年: OCT 15 2021
文献类型:Article
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摘要
Sn has emerged as an alternative anode material which involves alloying reactions toward Li storage. However, its huge volume and structural changes lead to severe degradation of the electrode and cumulative thickening of the solid electrolyte interface (SEI) upon cycling, which dramatically shorten the cycle life of the electrode. Here, we demonstrate that in the rationally designed interface structure of Sn-Mo film electrodes, with the addition of Mo protective layers and the well-dispersed dot-like Mo nanoparticles in the Sn-Mo layer, the highly stable electrode-interfaces and improved electrochemical performance can be achieved. The Mo/Sn-Mo/Mo multilayered electrode exhibits an initial reversible capacity of 870 mA h g-1, and maintains a capacity retention of 70% after 400 cycles between 0.01 and 2 V vs. Li/Li+, much superior to those previous reported Sn-based alloy thin film anodes. Besides, the Mo/Sn-Mo/Mo electrode can achieve 540 mA h g-1 after 200 cycles within 0.01-1.2 V on both copper foil and carbon film current collectors, and has superior stable reversible capacities within 0.2-1.2 V and 0.01-0.8 V. This work based on interfacial modification provides a fundamental strategy to design electrode materials for large capacity and flexible lithium-ion batteries.
关键词
作者关键词:Film electrode; Sn-Mo alloy; Interfacial modification; Lithium-ion batteries
KeyWords Plus:THIN-FILM; ELECTROCHEMICAL PROPERTIES; ION; MICROSTRUCTURE; NANOCOMPOSITE; PERFORMANCE; COMPOSITES; BATTERIES
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China.
通讯作者地址: Hu, RZ (通讯作者)
显示更多 South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China.
地址:
显示更多 [ 1 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
显示更多 [ 2 ] South China Univ Technol, Analyt & Testing Ctr, Guangzhou 510640, Peoples R China
电子邮件地址:msrenzonghu@scut.edu.cn
基金资助致谢
基金资助机构显示详情 授权号
National Natural Science Foundation of China (NSFC)
52071144
51621001
51822104
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出版商
ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Electrochemistry; Energy & Fuels; Materials Science
Web of Science 类别:Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary