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Revealing the importance of suppressing formation of lithium hydride and hydrogen in Li anode protection

Interdisciplinary Materials 2023年第2期2卷 337-347页

作者： Gaojie Xu Xiaofan Du Shenghang Zhang Jiedong Li Shanmu Dong Zhiwei Hu Guanglei Cui Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdaoChina Shandong Energy Institute QingdaoChina Qingdao New Energy Shandong Laboratory QingdaoChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina School of Future Technology University of Chinese Academy of Sciences BeijingChina Max Planck Institute for Chemical Physics of Solids DresdenGermany

The reviving of the“Holy Grail”lithium metal batteries(LMBs)is greatly hindered by severe parasitic reactions between Li anode and ***,first,we comprehensively summarize the failure mechanisms and protection principles of the Li ***,despite being in dispute,the formation of lithium hydride(LiH)is demonstrated to be one of the most critical factors for Li anode ***,we trace the research history of LiH at electrodes of lithium *** LMBs,LiH formation is suggested to be greatly associated with the generation of H_(2)from Li/electrolyte intrinsic parasitic reactions,and these intrinsic reactions are still not fully ***,density functional theory calculations reveal that H_(2)adsorption ability of representative Li anode protective species(such as LiF,Li_(3)N,BN,Li_(2)O,and graphene)is much higher than that of Li and ***,as an important supplement of well-known lithiophilicity theory/high interfacial energy theory and three key principles(mechanical stability,uniform ion transport,and chemical passivation),we propose that constructing an artificial solid electrolyte interphase layer enriched of components with much higher H_(2)adsorption ability than Li will serve as an effective principle for Li anode *** summary,suppressing formation of LiH and H_(2)will be very important for cycle life enhancement of practical LMBs.

关键词： density functional theory H_(2)adsorption ability Li anode protection lithium hydride solid electrolyte interphase

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Mechanism and Dynamics of the Addition of lithium hydride to Acetylene

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Chemical Research in Chinese Universities 1991年第2期7卷 74-78页

作者： Chen Bin, Zhao Chengda and Huang Jingan (Department of Chemistry, Northeast Normal University, Changchun)

Reaction ergodography for the addition of lithium hydride to acetylene indicates that the lithium hydride, in both monomeric and dimeric forms, reacts with the acetylene via two similar and competitive pathways. Hence... 详细信息

关键词： Reaction ergodography Mechanism Dynamics lithium hydride Acetylene

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