Analytical modeling framework for performance degradation of PEM fuel cells during startup–shutdown cycles

Abstract

An analytical modeling framework coupling carbon corrosion and an agglomerate model is established to predict the performance degradation of the cathode catalyst layer (cCL) during startup–shutdown cycles.

Optimization Strategy Analysis of Intelligent Product Service System Based on Computer Simulation Technology

“…Aiming at the massive request challenge of the networked intelligent service system, in order to deal with the massive requests in real time, it is necessary to evaluate the performance of the networked intelligent service system. First, the idea of queuing theory is adopted to model the performance of the networked intelligent service system based on the formal modeling of the agent system; after that, the performance indicators used for performance evaluation were selected, and the formulas of these performance indicators were interpreted under the queuing theory model M/M/c; a method for performance evaluation of networked intelligent service systems is presented [21].…”

Gas diffusion layer degradation in proton exchange membrane fuel cells: Mechanisms, characterization techniques and modelling approaches

“…Figure 4 The H2/air front line and reverse current during start-up of PEMFC [46] The mechanism behind this high interfacial potential difference was first reported by Reiser et al in 2005 [26]. Before the start-up of a PEM fuel cell, both cathode and anode are filled with air, either because of gas crossover through the membrane or air leaking in from the outside [48]. However, as shown in Fig.…”

“…Since the experiments of electrochemical carbon corrosion are costly and time-consuming [48] and mimicking and controlling startup and shutdown procedures can be complex and difficult [156], various models have been proposed to investigate the mechanisms behind it [26].…”

“…Their results showed that the capacitance effect may also have a large impact on the reverse current during SUSD. Recently, Li et al [162] further established a carbon corrosion model with an agglomerate CL sub-model, which linked the reverse current with the overall performance loss through the changes in structural parameters. Although most of these studies focused on the carbon corrosion in the CL, the carbon corrosion in the GDL shares the same reaction kinetics, so these equations can also be applicable to the GDL once the GDL carbon/water interfacial potential is modeled.…”

Analysis of the operating characteristics of hydrogen PEM fuel cell and battery onelectric vehicle in different driving cycles

“…In addition, the humidity of gases that react in the fuel cell positively affects the fuel cell's performance. 48 not produce harmful emissions, and only water is formed as a result of the reaction. 23 However, the production method used to reduce the greenhouse gases generated during hydrogen production is vital.…”