Yttrium trihydride enhanced lithium storage in carbon materials

时间:2020-07-07作者:浏览量:475


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