Electrolytes for a metal-ion battery cell with high-capacity, micron-scale, volume-changing anode particles
摘要
說明書
As an example, a metal-ion battery cell comprises an anode electrode with a capacity loading in the range of about 2 mAh/cm2 to about 10 mAh/cm2 and comprising anode particles that (i) have an average particle size in the range of about 0.2 microns to about 40 microns, (ii) exhibit a volume expansion in the range of about 8 vol. % to about 180 vol. % during one or more charge-discharge cycles of the battery cell, and (iii) exhibit a specific capacity in the range of about 550 mAh/g to about 2900 mAh/g. The metal-ion battery cell further comprises a cathode electrode comprising an intercalation-type active material including at least Li, one or more metals, and oxygen. The metal-ion battery cell further comprises a separator electrically separating the anode electrode and the cathode electrode, and an electrolyte ionically coupling the anode electrode and the cathode electrode. The electrolyte comprises one or more metal-ion salts and a solvent composition, the solvent composition comprising one or more low-melting point solvents that each have a melting point in the range from about ?140° C. to about ?60° C. and are in the range from about 10 vol. % to about 95 vol. % of the solvent composition.
The accompanying drawings are presented to aid in the description of embodiments of the disclosure and are provided solely for illustration of the embodiments and not limitation thereof. Unless otherwise stated or implied by context, different hatchings, shadings, and/or fill patterns in the drawings are meant only to draw contrast between different components, elements, features, etc., and are not meant to convey the use of particular materials, colors, or other properties that may be defined outside of the present disclosure for the specific pattern employed.
