Yttrium trihydride enhanced lithium storage in carbon materials
作者:Zheng, XY (Zheng, Xinyao)[ 1 ] ; Li, GL (Li, Guoling)[ 2 ] ; Guo, YR (Guo, Yanru)[ 1 ] ; Yu, H (Yu, Hongen)[ 1 ] ; Li, S (Li, Shuan)[ 1 ] ; Xiao, R (Xiao, Rui)[ 1 ] ; Zheng, J (Zheng, Jie)[ 1,3 ] ; Li, XG (Li, Xingguo)[ 1 ]
CARBON
卷: 164 页: 317-323
DOI: 10.1016/j.carbon.2020.04.020
出版年: AUG 30 2020
文献类型:Article
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摘要
Metal hydrides (MHx) are gaining increasingly interest as anode materials for lithium ion batteries. The most widely accepted lithium storage mechanism for MHx is the conversion mechanism to form LiH. Our previous study suggested a different lithium storage mechanism of rare earth trihydride (REH3, RE = Y, La and Gd)-graphite composite: the reactive H released from the REH3-REH2 conversion may enhance the lithium storage capacity of graphite by forming a Li-C-H composite. In this work, this interesting phenomenon is further studied by comparing the lithium storage performance of YH3/carbon composite using different carbon materials: graphite, acetylene black, activated carbon and commercial graphene. The enhanced lithium storage capacity by YH3 addition is only observed for graphite, indicating the essential role of the intact layered graphene structure in this new lithium storage mechanism. (C) 2020 Elsevier Ltd. All rights reserved.
关键词
KeyWords Plus:DOPED POROUS CARBON; ION BATTERIES; ELECTRODE MATERIALS; MAGNESIUM HYDRIDE; NATURAL GRAPHITE; ANODE PROPERTIES; NANO-SI; PERFORMANCE; CAPACITY; CONVERSION
作者信息
通讯作者地址: Zheng, J; Li, XG (通讯作者)
显示更多Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci BNLMS, Beijing 100871, Peoples R China.
地址:
显示更多[ 1 ] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci BNLMS, Beijing 100871, Peoples R China
显示更多[ 2 ] Qingdao Univ, Coll Mat Sci & Engn, Qingdao 266071, Peoples R China
显示更多[ 3 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址:zhengjie@pku.edu.cn
基金资助致谢
基金资助机构显示详情授权号
Ministry of Science and Technology, China
2018YFB1502102
National Natural Science Foundation of China
51971004
51771002
21771006
U1607126
Open Fund of the Guangdong Provincial Key Laboratory of Advance Energy Storage Materials, China
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出版商
PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Materials Science
Web of Science 类别:Chemistry, Physical; Materials Science, Multidisciplinary