关键词: 碱性聚电解质, 燃料电池, 碳酸化, 二氧化碳, 氢氧化

Abstract:

The alkaline polymer electrolyte fuel cell (APEFC) has made appreciable progress in recent years but is still suffering performance loss during discharge with air as the oxidant. Several theories have been suggested to interpret the loss. However, efforts are still needed to reach a clear quantitative understanding. Based on the major experimental findings in combination with thermodynamics and kinetics of the reactions involved in the anode, this paper presents a model featuring layered carbonization in the anode and relevant grouped equations. The simulation results generated from the latter are compared with experiments, and possible principles to suppress the performance loss are proposed.

Key words: alkaline polymer electrolyte, fuel cell, carbonization, carbon dioxide, hydrogen oxidation reaction