Uchicago Argonne, LLC

Ka-Cheong Lau

Chen Liao

Magnesium salts suitable for use in an electrolyte for a magnesium ion electrochemical cell are described herein. The salts are magnesium tetra(perfluoroalkoxy)metalates, optionally solvated with up to seven ether molecules coordinated to the magnesium ion thereof. In one embodiment, the salt has the empirical formula: Mg(Z)[M(OCR)](Formula (I)) wherein Z is an ether; n is 0 to about 7; M is Al or B; and each R independently is a perfluoroalkyl group (e.g., Cto Cperfluoroalkyl). The magnesium salts of Formula (I) are suitable for use as electrolyte salts for magnesium ion batteries (e.g., 5 V class magnesium batteries) and exhibit a wide redox window that is particularly compatible with magnesium anode. The salts are relatively cost effective to prepare by methods described herein, which are conveniently scalable to levels suitable for commercial production.

Electrolyte salts for rechargeable magnesium-ion batteries

A cathode for a lithium-sulfur (Li&#x2014;S) battery is described herein, which comprises elemental sulfur (e.g., S) and an electroactive polyanthraquinone-containing binder. In some embodiments, the cathode also includes a conductive carbon material in addition to the sulfur and binder. Also described herein is a Li&#x2014;S battery comprising the cathode, in combination with a metallic lithium-containing anode, a lithium conductive separator membrane between the anode and the cathode, and a liquid electrolyte comprising a lithium salt dissolved in a non-aqueous organic solvent.

Growing community of inventors

Chicago, IL, United States of America

Ka-Cheong Lau