PEM电解槽制氢多相传输及转化模型综述

Summarize of model for mass transfer and conversionin hydrogen production by PEM electrolyzer

质子交换膜(PEM)电解槽通过水解反应将电能转化为氢能。实际电解槽的水解过程是包含了热量、质量传递和电化学转化的复杂过程,构建理论模型可揭示各过程对性能的影响规律,指导电解槽的设计和优化。综述PEM电解槽电化学、物质传输和气液两相等理论模型,讨论模型发展现状和当前存在气液流动和离子传递影响规律不清晰的问题,探讨后续模型构建中应着力解决计算复杂、精度不足等难点。

Proton exchange membrane(PEM)electrolyzers can convert electrical energy into hydrogen through hydrolysis reaction.The actual water electrolysis involves complex interactions of heat transfer,mass transfer and electrochemical reactions.Developing theoretical models can reveal the influence of these processes on water electrolysis performance,providing guidance for the design and optimization of electrolyzers.Theoretical models of electrochemistry,mass transport and gas-liquid two-phase of PEM electrolyzer are summarized,the current status of model development and the existing issues such as unclear understanding of gas-liquid flow and ion transport phenomena are discussed.It is discussed that the difficulties of complicated computations and insufficient precision should be solved in the subsequent model construction.