Metal plating-based electrical energy storage cell

Abstract

The present disclosure provides an electrochemical storage cell including a battery. The battery includes an alkali metal anode having an anode Fermi energy, an electronically insulating, amorphous, dried solid electrolyte able to conduct alkali metal, having the general formula A3-xHxOX, in which 0 <= x <= 1, A is the alkali metal, and X is at least one halide, and a cathode including a cathode current collector having a cathode Fermi energy lower than the anode Fermi energy. During operation of the electrochemical storage cell, the alkali metal plates dendrite-free from the solid electrolyteonto the alkali metal anode. Also during operation of the electrochemical storage cell, the alkali metal further plates on the cathode current collector.

Description

technical field [0001] The present disclosure relates to electrochemical storage cells, and in particular to a metal plating-based electrochemical energy storage cell, which may include a battery (eg, a rechargeable battery), or a combined battery / supercapacitor. Background technique [0002] Battery [0003] As used herein, a battery refers to a unit having two electrodes (anode and cathode) separated by an electrolyte. The cells may be electrochemical cells. The materials in the electrodes can be both electronically active and chemically active. The anode can be a chemical reducing agent and the cathode can be a chemical oxidizing agent. Thus, both the anode and cathode are able to gain and lose ions, often the same ion, which is called the "working ion" of the battery. Electrolytes can be chemically active but electronically passive. The chemical activity of an electrolyte is manifested by its ability to gain and lose ions, usually working ions. Electrolytes are ge...

AI Technical Summary

Problems solved by technology

Continuing improvements in lithium-ion batteries have been achieved by fabricating complex electrode morphologies, but carbon anodes have limited capacity and can be plated by metallic lithium at excessive charge rates

Additionally, the layered oxide cathode may lose oxygen if the cell is overcharged

Managing multiple charge and discharge cycles for large cell stacks can increase the cost of large multi-cell batteries such as those used in electric vehicles

Additionally, the ability to increase the volumetric capacity of batteries suitable for portable batteries and other applications is limited

Finally, the organic liquid electrolytes used in most lithium-ion batteries are flammable and present a safety risk, especially if the battery forms dendrites or is damaged in some way that allows electronic contact between the cathode and anode in the battery. in this way

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