Scalable synthesis of Li2GeO3/expanded graphite as a high-performance anode for Li-ion batteries
作者:
Li, FK (Li, Fangkun) [1] ; Wang, XY (Wang, Xinyi) [1] ; He, WX (He, Weixin) [1] ; Xu, XJ (Xu, Xijun) [1] ; Liu, ZB (Liu, Zhengbo) [1] ; Shen, JD (Shen, Jiadong) [1] ; Hu, YF (Hu, Yunfei) [2] ; Chen, ZH (Chen, Zhonghua) [3] ; Liu, J (Liu, Jun) [1]
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卷898
文献号162893
DOI10.1016/j.jallcom.2021.162893
出版时间MAR 25 2022
已索引2022-02-08
文献类型Article
摘要
A simple, economical, and easily scalable high-energy ball-milling method for the synthesis of Li2GeO3/expanded graphite (LGO/EG) as a high-performance anode for lithium-ion batteries is reported. The LGO/EG exhibits a unique architecture with expanded graphite (EG) uniformly coating Li2GeO3 (LGO) particles, which effectively inhibited the agglomeration of LGO particles. The LGO/7 wt%EG anode delivers a discharge capacity of 800.6 mA h g(-1) at 5.0 A g(-1), with an outstanding capacity retention of 75.9% after 300 cycles at 1.0 A g(-1), which is 8.3% higher than that of the uncoated LGO anode. This is attributed to the introduction of EG which improves the electronic conductivity of LGO, and the uniformly coated EG can effectively inhibit the volume change of LGO particles during the charging-discharging process. As a result, LGO/EG has outstanding high-rate performance and long-term cycle stability. (C) 2021 Elsevier B.V. All rights reserved.
关键词
作者关键词Li2GeO3Expanded graphiteCoated structureAnodeLithium-ion batteries
Keywords PlusHIGH-CAPACITYCONVERSION ANODELITHIUMCARBONCATHODE
作者信息
通讯作者地址
Liu, Jun
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
通讯作者地址
Chen, Zhonghua
(通讯作者)
Shenzhen FBTech Elect Ltd, Fenghuang Blvd, Shenzhen 518111, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
2 Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518118, Peoples R China
3 Shenzhen FBTech Elect Ltd, Fenghuang Blvd, Shenzhen 518111, Peoples R China
电子邮件地址28050689060@qq.commsjliu@scut.edu.cn
类别/分类
研究方向ChemistryMaterials ScienceMetallurgy & Metallurgical Engineering