Lee, Changhyeon Kim, Subin Cho, Ki-Yeop Sim, Kiyeon Jo, Jinhyeon Eom, Kwangsup 2025-01-07T05:30:27Z 2025-01-07T05:30:27Z 2024-12-30 2024-12 1385-8947 https://pubs.kist.re.kr/handle/201004/151487 Despite the lowest electrode potential (-3.04 V vs. S.H.E) and high capacity (3,860 mAh/g) of lithium metal anodes (LMAs), LMAs face numerous challenges for practical industrialization. In particular, the inevitable lithium (Li) dendrites and volume expansion during the charge/discharge processes cannot be prevented by a naturally formed conventional solid electrolyte interface (SEI), which is not only fragile but also induces the growth of Li dendrites. Herein, we introduce a facile method to artificially construct a robust SEI. Specifically, we form [Cu(SCN2H4)n]Cl nanowires (CTC NWs) precursor on a Cu current collector using electrochemical deposition (ECD) under thiourea (SCN2H4, TU) solution. Then by applying an initial electrochemical reaction of Li deposition/stripping, the CTC NWs are converted into uniform and compact multi-inorganic SEI layers composed of Li2S2/Li2Sx, LiCl, and LixN. Moreover, the residual TU in the CTC NWs promotes favorable LiNO3 decomposition, transforming into Li3N through strong hydrogen bonding (N-H) between both molecules. Such multi-inorganic SEI layers promote homogeneous Li+ flux and significantly decrease the resistance of the SEI, enabling smooth Li plating on the surface. As a result, the LMA employing CTC NWs (Li@CTC NWs) shows exceptional cyclic stability having a low overpotential of 14 mV for more than 1,000 hat a symmetric LMA test at 1 mA cm(-2). Moreover, the Li@CTC NWs parallel to LFP full-cell LMB demonstrates practical improvement by showing about 30 % higher capacity retention (85.6 %) compared to the untreated LMB cell during the initial 140 cycles at 1.0 C-rate. English Elsevier BV Construction of robust solid electrolyte interface using [Cu(SCN2H4)n]Cl nanowires for stable lithium metal anodes Article 10.1016/j.cej.2024.158005 1 Chemical Engineering Journal, v.502 Chemical Engineering Journal 502 N scie scopus 001370061500001 2-s2.0-85210122096 Engineering, Environmental Engineering, Chemical Engineering Article ELECTRODEPOSITION BATTERY DESIGN LAYER Lithium metal battery Li metal anode Current collector modification Artificial solid electrolyte interphase (SEI) Multi-inorganic SEI formation