Jo, Yun-Joo Shin, Hyeon-Ji Kim, Hyerim Kansara, Shivam Hwang, Jang-Yeon Kim, Jongsoon Mun, Junyoung Kwak, Won-Jin Jung, Hun-Gi 2025-07-18T08:30:58Z 2025-07-18T08:30:58Z 2025-07-18 2025-06 1530-6984 https://pubs.kist.re.kr/handle/201004/152812 The highly reactive nature of Li metal presents challenges, such as an unstable solid-electrolyte interphase (SEI) and uneven Li nucleation. Herein, to address these challenges, ZnF2 and LiNO3 were introduced as electrolyte additives to create a lithiophilic Li-Zn alloy and a stable SEI comprising LiF and LiNO3 on the Li metal surface. The Li-Zn alloy, formed via a spontaneous conversion reaction between ZnF2 and Li, provides favorable nucleation sites for Li deposition, thereby suppressing dendrite growth and improving the cycle stability of the Li metal, even at a high current density of 5 mA cm-2. In Li||LiFePO4 full cells, a remarkable capacity retention of 98.6% was achieved after 400 cycles at 1 C. Furthermore, approximately 100% capacity retention was achieved after 1400 cycles at 10 C. This study provides a simple and effective electrolyte additive strategy for obtaining dendrite-free Li metal. English American Chemical Society In Situ Formation of a Lithiophilic Li-Zn Alloy Using Dual-Salt Electrolyte Additives for Lithium Metal Batteries Article 10.1021/acs.nanolett.5c01307 1 Nano Letters, v.25, no.25, pp.10082 - 10089 Nano Letters 25 25 10082 10089 N scie scopus 001505605500001 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article ION ANODES Li metal batteries dual-salt electrolyte electrolyte additives lithiophilic Li-Zn alloy Li dendrite suppression