标题
作者
作者:Cheng, DL (Cheng, Deliang)[1 ]; Liu, JW (Liu, Jiangwen)[1 ]; Li, X (Li, Xiang)[1 ]; Hu, RZ (Hu, Renzong)[1 ]; Zeng, MQ (Zeng, Meiqing)[1 ]; Yang, LC (Yang, Lichun)[1 ]; Zhu, M (Zhu, Min)[1 ]
期刊信息
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文献类型:Article
摘要
The (SnOx-Sn)@few layered graphene ((SnOx-Sn)@FLG) composite has been synthesized by oxygen plasma-assisted milling. Owing to the synergistic effect of rapid plasma heating and ball mill grinding, SnOx (1 <= x <= 2) nanoparticles generated from the reaction of Sn with oxygen are tightly wrapped by FLG nanosheets which are simultaneously exfoliated from expanded graphite, forming secondary micro granules. Inside the granules, the small size of the SnOx nanoparticles enables the fast kinetics for Na+ transfer. The in-situ formed FLG and residual Sn nanoparticles improve the electrical conductivity of the composite, meanwhile alleviate the aggregation of SnOx nanoparticles and relieve the volume change during the cycling, which is beneficial for the cyclic stability for the Na+ storage. As an anode material for sodium-ion batteries, the (SnOx-Sn)@FLG composite exhibits a high reversible capacity of 448 mAh g(-1) at a current density of 100 mA g(-1) in the first cycle, with 82.6% capacity retention after 250 cycles. Even when the current density increases to 1000 mA g(-1), this composite retains 316.5 mAh g(-1) after 250 cycles. With superior Na+ storage stability, the (SnOx-Sn)@FLG composite can be a promising anode material for high performance sodium-ion batteries. (C) 2017 Elsevier B.V. All rights reserved.
关键词
作者关键词:Sodium-ion batteries; Anode; Plasma assisted milling; Few layered graphene; SnOx
作者信息
通讯作者地址:Yang, LC (通讯作者)
![]() | South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China. |
地址:
![]() | [ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China |
电子邮件地址:mslcyang@scut.edu.cn
出版商
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