Integrated metal hydrogen-oxygen fuel cell system based on aluminum-lithium alloy

An integrated metal hydrogen-oxygen fuel cell system based on aluminum-lithium alloy, which is a combined power supply system formed by coupling a metal-air cell and a hydrogen-oxygen fuel cell, wherein the metal-air cell comprises a metal-air cell positive electrode, an electrolyte cavity, a negative electrode tab, an air cell air outlet and an aluminum-lithium alloy negative electrode;

• the metal-air cell positive electrode is connected with the electrolyte cavity and is responsible for reacting with oxygen in the air, generating current and supporting continuous reaction of a cell;
• the electrolyte cavity is connected with the negative electrode tab, and electrolyte in the electrolyte cavity reacts with the aluminum-lithium alloy negative electrode and outputs current through the negative electrode tab;
• the air cell air outlet is arranged at a top of the metal-air cell and is used for discharging hydrogen generated by a side reaction of the aluminum-lithium alloy negative electrode and conveying the hydrogen to the hydrogen-oxygen fuel cell through a gas pipe;
• the aluminum-lithium alloy negative electrode is an alloy comprising four metal elements:
• Al, Mg, Cu and Li;
• when preparing the metal-air cell positive electrode, a membrane electrode with a thickness of 0.56 mm is obtained by stacking and rolling in an order of a waterproof breathable membrane, a nickel mesh, the waterproof breathable membrane and a catalytic membrane, and the membrane electrode is sintered at 300° C. in a muffle furnace for 1 hour to obtain a complete air positive electrode.