Integrated regenerative fuel cell structure

Abstract

The invention discloses an integrated regenerative fuel cell structure. In the cell structure, an anode insulating cushion plate [A2], an anode conducting plate [A3], a front special plate [A4], an anode flow field component, a double-effect membrane electrode component [M1], a cathode flow field component, a rear special water plate [B4], a cathode conducting plate [B3] and a cathode insulating cushion plate [B2] are stacked in turn to form a cell stack; two ends of the cell stack are provided with a front end plate [A1] and a rear end plate [B1]; and outer edges of the front end plate [A1] and the rear end plate [B1] are larger than those of other parts of the cell stack, areas of the front end plate [A1] and the rear end plate [B1] beyond the cell stack are provided with four edge holes at equal intervals, and screws are arranged in the edge holes to lock the cell stack. The integrated regenerative fuel cell has fuel cell and water electrolysis (WE) difunctional characteristic, can independently serve as a fuel cell and water electrolyzer, also can independently generate electricity or oxyhydrogen gas, and meets the requirement of a fixed fuel cell or transportation, including transportation tools and hydrogen refueling stations.

Description

technical field [0001] The invention relates to the field of regenerative fuel cells, in particular to an integrated proton exchange membrane regenerative fuel cell structure. Background technique [0002] Regenerative Fuel Cell (RFC for short), developed on the basis of hydrogen-oxygen fuel cell, is a new type of hydrogen energy power device that combines hydrogen-oxygen fuel cell technology with water electrolysis technology. Its working principle is: [0003] Positive electrode: 2H 2 O→O 2 +4H + +4e (Formula 1) [0004] Negative electrode: 4H + +4e→2H 2 (Formula 2) [0005] The total reaction of electrolysis: electric energy +2H 2 O→2H 2 +O 2 (Formula 3) [0006] Positive electrode: 2H 2 O→O 2 +4H + +4e (Formula 4) [0007] Negative electrode: 4H + +4e→2H 2 (Formula 5) [0008] Total power generation reaction: 2H 2 +O 2 →2H 2 O+electric energy (Equation 6) [0009] The water electrolyzer produc...

AI Technical Summary

Problems solved by technology

At present, the problems of integrated renewable fuel cells are: 1) The structural design of URFC cells is too complicated and the assembly process is cumbersome

2) When URFC works in water electrolysis mode, the oxygen electrode produces new ecological oxygen that is highly corrosive to the membrane electrode and flow field plate, resulting in poor FC / WE cycle life of URFC and unstable battery performance

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