Stoichiometric Ti_(3)C_(2)T_(x)Coating for Inhibiting Dendrite Growth in Anode-Free Lithium Metal Batteries

作     者：Xiangrong Zeng Manmatha Mahato Woong Oh Hyunjoon Yoo Van Hiep Nguyen Saewoong Oh Geetha Valurouthu Soon-Ki Jeong Chi Won Ahn Yury Gogotsi Il-Kwon Oh Xiangrong Zeng;Manmatha Mahato;Woong Oh;Hyunjoon Yoo;Van Hiep Nguyen;Saewoong Oh;Geetha Valurouthu;Soon-Ki Jeong;Chi Won Ahn;Yury Gogotsi;Il-Kwon Oh

作者机构：National Creative Research Initiative for Functionally Antagonistic Nano-EngineeringDepartment of Mechanical EngineeringKorea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Korea Department of Materials Science&Engineeringand A.J.Drexel Nanomaterials InstituteDrexel UniversityPhiladelphiaPennsylvania 19104USA Department of Energy EngineeringSoonchunhyang University22Soonchunhyang-roSinchang-myeonAsan-siChungcheongnam-do 31538Korea National Nanofab Center(NNFC)Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Korea 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2024年第7卷第4期

页      面：153-162页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the Creative Research Initiative Program(2015R1A3A2028975) funded by the National Research Foundation of Korea(NRF) supported by LG energy solution-KAIST Frontier Research Laboratory(2022) the National Research Foundation of Korea(NRF)grants(MSIT,NRF-2021M3H4A1A03047333) supported(funded)by the Semiconductor-Secondary Battery Interfacing Platform Technology Development Project of NNFC 

主　　题：anode-free lithium metal batteries stoichiometric MXene solid electrolyte interphase surface terminations 

摘      要：Lithium metal batteries(LMBs)and anode-free LMBs(AFLMBs)present a solution to the need for batteries with a significantly superior theoretical energy ***,their adoption is hindered by low Coulombic efficiency(CE)and rapid capacity fading,primarily due to the formation of unstable solid electrolyte interphase(SEI)layer and Li dendrite growth as a result of uneven Li ***,we report on the use of a stoichiometric Ti_(3)C_(2)T_(x)(S-Ti_(3)C_(2)T_(x))MXene coating on the copper current collector to enhance the cyclic stability of an anode-free lithium metal *** S-Ti_(3)C_(2)T_(x)coating provides abundant nucleation sites,thereby lowering the overpotential for Li nucleation,and promoting uniform Li ***,the fluorine(-F)termination of S-Ti_(3)C_(2)T_(x)participates in the SEI formation,producing a LiF-rich SEI layer,vital for stabilizing the SEI and improving cycle *** equipped with S-Ti_(3)C_(2)T_(x)@Cu current collectors displayed reduced Li consumption during stable SEI formation,resulting in a significant decrease in capacity *** with S-Ti_(3)C_(2)T_(x)@Cu current collectors achieved a high initial capacity density of 4.2 mAh cm^(-2),70.9%capacity retention after 50 cycles,and an average CE of 98.19%in 100 *** innovative application of MXenes in the energy field offers a promising strategy to enhance the performance of AFLMBs and could potentially accelerate their commercial adoption.