Revisiting Dipole-Induced Fluorinated-Anion Decomposition Reaction for Promoting a LiF-Rich Interphase in Lithium-Metal Batteries

作     者：Liu Wang Jiahui Guo Qi Qi Xiaotong Li Yuanmeng Ge Haoyi Li Yunfeng Chao Jiang Du Xinwei Cui Liu Wang;Jiahui Guo;Qi Qi;Xiaotong Li;Yuanmeng Ge;Haoyi Li;Yunfeng Chao;Jiang Du;Xinwei Cui

作者机构：Henan Institutes of Advanced TechnologyZhengzhou UniversityZhengzhou 450003People’s Republic of China College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001People’s Republic of China State Key Laboratory of Coking Coal Resources Green ExploitationZhengzhou UniversityZhengzhou 450001People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报(英文版))

年 卷 期：2025年第17卷第5期

页      面：263-280页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the financial support from the National Natural Science Foundation of China(Nos.52272242,52174387,and 52403339) Key Research and Development Program of Henan Province(No.231111240600) 

主　　题：LiF-rich SEI Li-ion mobility Lithiophilicity MXene Graphdiyne 

摘      要：Building anion-derived solid electrolyte interphase(SEI)with enriched LiF is considered the most promising strategy to address inferior safety features and poor cyclability of lithium-metal batteries(LMBs).Herein,we discover that,instead of direct electron transfer from surface polar groups to bis(trifluoromethanesulfonyl)imide(TFSI-)for inducing a LiF-rich SEI,the dipole-induced fluorinated-anion decomposition reaction begins with the adsorption of Li ions and is highly dependent on their mobility on the polar *** demonstrate this,a single-layer graphdiyne on MXene(sGDY@MXene)heterostructure has been successfully fabricated and integrated into polypropylene *** is found that the adsorbed Li ions connect electron-donating sGDY@MXene to TFSI-,facilitating interfacial charge transfer for ***,this does not capture the entire *** sGDY@MXene also renders the adsorbed Li ions with high mobility,enabling them to reach optimal reaction sites and expedite their coordination processes with O on O=S=O and F on the broken–CF_3~-,facilitating bond *** contrast,immobilized Li ions on the more lithiophilic pristine MXene retard these cleavage ***,the decomposition reaction is accelerated on sGDY@*** work highlights the dedicate balance between lithiophilicity and Li-ion mobility in effectively promoting a LiF-rich SEI for the long-term stability of LMBs.