Sn-C and Se-C Co-Bonding SnSe/Few-Layered Graphene Micro-Nano Structure: Route to a Densely Compacted and Durable Anode for Lithium/Sodium-Ion Batteries

时间:2019-11-05作者:浏览量:629


Sn-C and Se-C Co-Bonding SnSe/Few-Layered Graphene Micro-Nano Structure: Route to a Densely Compacted and Durable Anode for Lithium/Sodium-Ion Batteries

作者:Cheng, DL (Cheng, Deliang)[ 1 ] ; Yang, LC (Yang, Lichun)[ 1 ] ; Hu, RZ (Hu, Renzong)[ 1 ] ; Liu, JW (Liu, Jiangwen)[ 1 ] ; Che, RC (Che, Renchao)[ 4 ] ; Cui, J (Cui, Jie)[ 2 ] ; Wu, YN (Wu, Yanan)[ 3 ] ; Chen, WY (Chen, Wanyu)[ 3 ] ; Huang, JL (Huang, Jianling)[ 1 ] ; Zhu, M (Zhu, Min)[ 1 ] ...更多内容


ACS APPLIED MATERIALS & INTERFACES


卷: 11  期: 40  页: 36685-36696

DOI: 10.1021/acsami.9b12204


出版年: OCT 9 2019


文献类型:Article


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摘要

Developing anodes with a high and stable energy density for both gravimetric and volumetric storage is vital for high-performance lithium/sodium-ion batteries. Herein, an SnSe/few-layered graphene (FLG) composite with a high tap density (2.3 g cm(-3)) is synthesized via the plasma-milling method, in which SnSe nanoparticles are strongly bound with the FLG matrix, owing to both Sn-C and Se-C bonds, to form nanosized primary particles and then assemble to microsized secondary granules. The FLG can effectively alleviate the large stress generated from the volume expansion of SnSe during cycling based on its superstrength. Furthermore, as demonstrated by the density-functional theory calculations, the Sn-C and Se-C co-bonding benefitting from the formation of substantial vacancy defects on the P-milling-synthesized FLG enables strong affinity between SnSe nanoparticles and the FLG matrix, preventing SnSe from aggregating and detaching even after long-term cycling. As an anode for lithium-ion batteries, it exhibits high gravimetric and volumetric capacities (864.8 mAh g(-1) and 1990 mAh cm(-3) at 0.2 A g(-1)), a high rate (612.6 mAh g(-1) even at 5.0 A g(-1)), and the longest life among the reported SnSe-based anodes (capacity retention of 92.8% after 2000 cycles at 1.0 A g(-1)). Subsequently, an impressive cyclic life (capacity retention of 91.6% after 1000 cycles at 1.0 A g(-1)) is also achieved for sodium-ion batteries. Therefore, the SnSe/FLG composite is a promising anode for high-performance lithium/sodium-ion batteries.


关键词

作者关键词:SnSe; few-layered graphene; Sn/Se-C bond; DFT calculation; micro-nano structure; anode


KeyWords Plus:HIGH-PERFORMANCE ANODES; SODIUM-ION; ELECTROCHEMICAL PERFORMANCE; ENERGY-STORAGE; CYCLE LIFE; CARBON; COMPOSITE; SELENIUM; OXIDE; INSERTION


作者信息

通讯作者地址: Zhu, M (通讯作者)


显示更多South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China.

通讯作者地址: Zhao, YJ (通讯作者)

显示更多South China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China.

地址:


显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China

显示更多[ 2 ] South China Univ Technol, Analyt & Testing Ctr, Guangzhou 510640, Guangdong, Peoples R China

显示更多[ 3 ] South China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China

显示更多[ 4 ] Fudan Univ, Dept Mat Sci, Shanghai 200438, Peoples R China

电子邮件地址:memzhu@scut.edu.cn; zhaoyj@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


51671088

51671089

51822104

11574088

National Natural Science Foundation of China


51621001

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出版商

AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA


期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Science & Technology - Other Topics; Materials Science


Web of Science 类别:Nanoscience & Nanotechnology; Materials Science, Multidisciplinary