Cho, Jae-Hyun Kim, Su Jin Oh, Jinwoo Ha, Jung Hoon Kim, Kwang-Bum Lee, Kwan-Young Lee, Jae Kyun 2024-01-19T21:04:06Z 2024-01-19T21:04:06Z 2021-09-04 2018-12-13 1932-7447 https://pubs.kist.re.kr/handle/201004/120574 The available capacity of Mg hybrid batteries is closely related to the number of charge carriers within electrolyte solutions. Therefore, in this study, a dual-salt composition capable of supplying high Li+ concentration was prepared. A dual-salt electrolyte consisting of a LiAlCl4 complex (LACC) and LiN(SO2CF3)(2) (LiTFSI) was found to be an excellent candidate, providing 2.2 M Li+ concentration along with anodic stability up to 3 V (vs Mg/Mg2+). However, the LACC moiety of the above composition first had to undergo a two-step modification procedure comprising "Mg powder treatment" and "conditioning process" to properly implement Mg deposition and stripping at the Mg anode. Spontaneous substitutions of oxidation states between the anionic Al3+ complex and metallic Mg induced by these processes resulted in the generation of Mg2+ complex species within the LACC solutions. The modified LACC was compatible even with 2 M of LiTFSI, the concentration with which we achieved 150 mA h g(-1) capacity of a FePO4 cathode at 1.5 mg cm(-2) loading density, when using an electrolyte volume of only 25.5 mu L cm(-2). English American Chemical Society ALUMINUM-CHLORIDE COMPLEX MG BATTERIES PERFORMANCE SPECIATION SYSTEMS Strategic Design of Highly Concentrated Electrolyte Solutions for Mg2+/Li+ Dual-Salt Hybrid Batteries Article 10.1021/acs.jpcc.8b09080 1 The Journal of Physical Chemistry C, v.122, no.49, pp.27866 - 27874 The Journal of Physical Chemistry C 122 49 27866 27874 scie scopus 000453488300009 2-s2.0-85058654066 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article ALUMINUM-CHLORIDE COMPLEX MG BATTERIES PERFORMANCE SPECIATION SYSTEMS Dual-Salt Hybrid Rechargeable Mg batteries LACC Solutions