Integrated reversible fuel cell water-gas separation structure and reversible fuel cell

Abstract

The invention relates to an integrated reversible fuel cell water-gas separation structure, which comprises a gravity-driven water-gas separation flow channel and a membrane electrode assembly (2), and the water-gas separation flow channel comprises a downward concave water flow channel (3) and an upward convex gas flow channel (4); the upper convex gas flow channels (4) and the lower concave water flow channels (3) are arranged in a staggered manner; the membrane electrode assembly (2) corresponds to the flow channel walls of the upper convex gas flow channel (4) and the lower concave water flow channel (3) to form a broken line shape; the upper convex gas flow channels (4) are connected through a gas distribution area (6), and the lower concave water flow channels (3) are connected through a water distribution area (5). Compared with the prior art, the reversible fuel cell has the advantages that water and gas flow channels are separated, the water management and reaction catalysis efficiency of the reversible fuel cell is effectively improved, and efficient bidirectional reversibility of the cell is really realized.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an integrated reversible fuel cell water-gas separation structure and the reversible fuel cell. Background technique [0002] Energy is the basis for the survival and development of modern society. With the continuous progress of human society, fossil fuels such as coal, oil and natural gas on which human beings depend are gradually being exhausted. At the same time, the consumption of fossil fuels has brought about increasingly serious air pollution and accelerated global warming. Therefore, the development of new energy sources, the improvement of fuel utilization, and the exploration of clean energy technologies to replace petroleum and other fossil fuels have become global issues that must be solved by mankind in this century. As a new type of energy storage battery, URFC (Unitized Regenerative fuel cell) has both power generation and electrolysis functions, and its speci...

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Problems solved by technology

The flow rate and pressure time of the purge will affect the efficiency of the fuel cell. In addition, if the flow rate of the purge is too high, the membrane electrode may be damaged; Long, the humidity of the catalytic layer is too low, which affects the catalyst activity

[0004] The traditional URFC plate configuration is difficult to take into account the purpose of power generation and drainage and electrolysis of required water, resulting in difficulty in gas and water management, insufficient mass transfer of reactants, and no efficient mode switching strategy, resulting in low efficiency of the URFC system and severely restricting the availability of water. Popularization and Application of Regenerative Fuel Cells

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