@article{a4f5b7894c96491eb095b6d19ee8c7f8,
title = "An in-situ formed bifunctional layer for suppressing Li dendrite growth and stabilizing the solid electrolyte interphase layer of anode free lithium metal batteries",
abstract = "Anode-free lithium metal batteries (AFLMBs) can achieve a high energy density. However, achieving high-capacity retention and Coulombic efficiency (CE) are challenging without a continuous Li supply from the Cu anode side. The lower CE and rapid capacity decay in AFLMBs are primarily due to non-uniform Li deposition and electrolyte decomposition during cycling. Herein, strontium fluoride (SrF2) nanoparticles are applied on Cu foils to attain the in-situ forming of a bifunctional interfacial layer, a Li-Sr alloy, and a LiF-rich SEI composite layer during Li plating. The derived Cu@SrF2 electrode has excellent plating/stripping stability and outstanding performance. AFLMB full cell (Cu@SrF2//NCM111) attains an average Coulombic efficiency (ACE) of 98.6 % and capacity retention of 51.0 % at the 60th cycle using a commercial carbonate-based electrolyte. In contrast, the bare AFLMB full cell (BCu//NCM111) only has an ACE of 94.9 % with a capacity retention of 10.2 % under the same conditions. The concept is proven in lithium metal batteries (LMBs). This strategy provides a simultaneous Li nucleation and formation of LiF-rich SEI layers, rendering it promising to realize AFLMBs and LMBs with long lifespans and high CE.",
keywords = "Anode-free, Bifunctional material, Li nucleation, Li-Sr alloy, SrF particles",
author = "Merso, {Semaw Kebede} and Tekaligne, {Teshager Mekonnen} and Weldeyohannes, {Haile Hisho} and Yosef Nikodimos and Shitaw, {Kassie Nigus} and Jiang, {Shi Kai} and Huang, {Chen Jui} and Wondimkun, {Zewdu Tadesse} and Jote, {Bikila Alemu} and Lennart Wichmann and Gunther Brunklaus and Martin Winter and Wu, {She Huang} and Su, {Wei Nien} and Mou, {Chung Yuan} and Hwang, {Bing Joe}",
note = "Funding Information: Financial support from the Ministry of Science and Technology of Taiwan ( MOST 110-2639-E-011-001-ASP , 110-3116-F-011-003 , 110-3116-F-011-004 , 110-2923-E-011-002 , 109-2923-E-011-008 , 109-2124-M-002-008 , 109-2923-E-011-009 ), the Ministry of Education of Taiwan (MOE U2RSC program 1080059 ) Academia Sinica ( AS-KPQ-106-DDPP ) as well as the supporting facilities from National Taiwan University of Science and Technology (NTUST), National Center for High-performance Computing (NCHC), and National Synchrotron Radiation Research Centre (NSRRC) are all gratefully acknowledged. L.W., G.B., and M.W. thank the German Federal Ministry of Education and Research (BMBF) for funding the project {\textquoteleft}LiBEST2{\textquoteright} (grant 13XP0304A ). Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",
year = "2022",
month = dec,
day = "10",
doi = "10.1016/j.est.2022.105955",
language = "English",
volume = "56",
journal = "Journal of Energy Storage",
issn = "2352-152X",
publisher = "Elsevier BV",
}