High-temperature solid-state lithium alloy-carbon dioxide battery

Abstract

A high temperature solid-state lithium alloy-carbon dioxide electrochemical cell includes: a negative electrode containing a lithium alloy having a melting point greater than 500° C.; a carbon dioxide electrode including a catalyst effective to reduce carbon dioxide at a temperature of 300° C. to 600° C. during discharge of the electrochemical cell; and a solid electrolyte including an oxide solid electrolyte and having a dense layer that separates the negative electrode and the carbon dioxide electrode, the dense layer having a porosity of less than 2 percent based on a total volume of the dense layer. A method of using the cell or a stack thereof includes exposing the cell or a stack thereof to an ambient environment which includes a carbon dioxide gas having a temperature of 300° C. to 600° C. and a pressure of 1 atm to 100 atm.

Dependencies are inferred from the claim text.