@article{Fan2023, 
author = {Haiyan Fan and Xinxin Zhang and Yuxing Zhao and Jianhua Xiao and Hua Yuan and Guang Wang and Yitao Lin and Jifang Zhang and Ludi Pan and Ting Pan and Yang Liu and Yuegang Zhang},
title = {Tailoring Mg2+ Solvation Structure in a Facile All-Inorganic [MgxLiyCl2x+y·nTHF] Complex Electrolyte for High Rate and Long Cycle-Life Mg Battery},
year = {2023},
journal = {Energy & Environmental Materials},
volume = {6},
number = {2},
keywords = {cycle life, electrolyte, Mg battery, solvation structure},
url = {https://www.sciopen.com/article/10.1002/eem2.12327},
doi = {10.1002/eem2.12327},
abstract = {A high-performance all-inorganic magnesium–lithium chloride complex (MLCC) electrolyte is synthesized by a simple room-temperature reaction of LiCl with MgCl2 in tetrahydrofuran (THF) solvent. Molecular dynamics simulation, density functional theory calculation, Raman spectroscopy, and nuclear magnetic resonance spectroscopy reveal that the formation of [MgxLiyCl2x+y·nTHF] complex solvation structure significantly lowers the coordination number of THF in the first solvation sheath of Mg2+, which significantly enhances its de-solvation kinetics. The MLCC electrolyte presents a stable electrochemical window up to 3.1 V (vs Mg/Mg2+) and enables reversible cycling of Mg metal deposition/stripping with an outstanding Coulombic efficiency up to 99% at current densities as high as 10 mA cm−2. Utilizing the MLCC electrolyte, a Mg/Mo6S8 full cell can be cycled for over 10000 cycles with a superior capacity retention of 85 mA h g−1 under an ultrahigh rate of 50 C (1 C = 128.8 mA g−1). The facile synthesis of high-performance MLCC electrolyte provides a promising solution for future practical magnesium batteries.}
}