文献类型：期刊文献

英文题名：A "three in one" strategy realized using a fluorinated gold-doped titanium silicalite layer on a copper current collector for stable lithium metal batteries

作者：Jin, Xiaopan[1];Huang, Gaoxu[1];Zhao, Xianming[1];Liu, Honghao[1];Wang, Rongjie[2];Guan, Mengjia[1];Li, Yongsheng[1,2]

机构：[1]East China Univ Sci & Technol, Frontier Sci Ctr Mat Biol & Dynam Chem, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn,Lab Low Dimens Mat Chem,Key Lab, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Sch Chem & Chem Engn, State Key Lab Incubat Base Green Proc Chem Engn, Shihezi 832003, Peoples R China

年份：2024

卷号：12

期号：21

起止页码：12856

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20241916066147);WOS:【SCI-EXPANDED(收录号:WOS:001215013100001)】；

语种：英文

外文关键词：Anodes - Copper - Deposition - Electric current collectors - Gold nanoparticles - Iron compounds - Lithium - Lithium batteries - Seebeck effect - Silicate minerals - Solid electrolytes - Zeolites

摘要：The challenging issues for the practical application of lithium metal batteries (LMBs) are the fragile solid-electrolyte interphase (SEI) layer and uncontrollable growth of Li dendrites induced by nonuniform Li deposition. In this work, to enable homogeneous Li deposition and a stable SEI layer, a fluorinated gold (Au) doped titanium silicalite (ATSF) is prepared by a facile synthetic process to modify the Cu current collector for a stable Li metal anode. Driven by the Li affinity of Au nanoparticles and microporous properties of titanium silicalite, uniform Li nucleation and homogeneous Li deposition can be realized on the modified Cu current collector. Simultaneously, the doping of fluorine in ATSF facilitates the formation of the LiF-rich SEI layer for a more stable Li stripping/plating process. Consequently, the ATSF-5/Cu current collector exhibits a high coulombic efficiency (CE) of 96.8% even after 600 cycles and a long-term cycling stability of 1100 h with remarkably low and stable overpotential. When paired with a high-mass-loading LiFePO4 cathode (similar to 2.3 mA h cm-2), the Li-metal full cell demonstrates an exceptional capacity retention of 97.9% with a high CE of 99.8% after 200 cycles. Furthermore, the LFP full cell with the Li@ATSF-5/Cu anode also displays superior cycling performance under harsh test conditions. This simple current collector modification through constructing a multi-functional zeolite matrix layer provides a new choice for achieving stable cycling performance of LMBs. Long cycle life was realized on a fluorinated, Au doped titanium silicalite modified Cu (ATSF-5/Cu) current collector by Li affinity of Au nanoparticles, microporous properties of titanium silicalite and the formation of the LiF-rich SEI layer.