Proton exchange membrane fuel cell stack consistency: evaluation methods, influencing factors, membrane electrode parameters and improvement measures-Chen Dongfang.
Abstract: Proton exchange membrane fuel cell (PEMFC) is an ideal energy conversion device. The performance of a fuel cell stack depends on the coordination of many aspects. Consistency is an important factor affecting fuel cell stack performance. However, how to evaluate and improve the consistency of fuel cell stacks is still not very clear. This paper summarizes the evaluation methods of fuel cell stack consistency, and discusses various factors that affect consistency, including operating conditions, operating methods, control strategies, structural design, component materials and manufacturing processes. Membrane electrode assembly (MEA) is the core component of PEMFC, and the difference between MEAs also determines the voltage consistency of the fuel cell stack. The detection of MEA parameters is an important method to evaluate its quality, and the main detection methods of MEA parameters are reviewed and compared. In addition, this paper also systematically analyzes the influence of MEA parameters on the performance and life of the fuel cell stack. Finally, the research directions and methods to improve the consistency of fuel cell stacks are proposed from the aspects of MEA preparation, stack design and operation optimization.
