Methods for Remit Voltage Reversal of Proton Exchange Membrane Fuel Cells

Abstract

In the commercialization of the hydrogen fuel cell for the transportation sector, one of the main factors affecting the lifespan of the fuel cell is voltage reversal, especially when the anode of the fuel cell is subject to fuel starvation momentarily during the operation. In this article, mitigation methods for voltage reversal are summarized in three parts, namely, the catalyst approaches, the MEA design approaches, the stack and system strategies approaches, which include the application of a highly active oxygen evolution reaction (OER) catalyst or durable catalyst support in the anode, employing a protective layer for the catalyst layer or optimizing the formula of the catalyst layer or employing a durable GDL, or optimization of stack design or system operation strategies.

In Situ Raman Insights into Palladium-Catalyzed Ethanol Electro-Oxidation Postoxygen Evolution

“…Integrated renewable fuel cells (URFCs) − mark a significant advancement in energy technology, offering remarkable energy density and power while converting pure water into hydrogen (and oxygen) without producing pollutants. Unlike traditional batteries, URFCs can switch between the fuel cell mode (FC) , and water electrolysis mode (WE), − storing hydrogen for a sustainable energy cycle. However, their efficiency is hampered by the slow kinetics of the oxygen evolution reaction (OER) ,, and oxygen reduction reaction (ORR), ,− making the development of efficient electrocatalysts essential.…”

Catalyst durability in electrocatalytic H2O2 production: key factors and challenges

“…Higher potentials due to local fuel starvation will not be considered as mitigation strategies on the device level could potentially be employed. [81][82][83] Consequently, the catalyst utilized in an H 2 O 2 electrolyser is subjected to analogous potential-driven degradation mechanisms as mentioned earlier for H 2 O 2 -FC. If the applied potential surpasses the reduction potential of the M x+ /M redox couple, it is likely to induce a change in the valence state of surface atoms at sufficiently high overpotentials.…”