Themed collection Special Issue: Frontiers of Hydrogen Energy and Fuel Cells

The potential of utilizing ammonia as a hydrogen carrier for on-site power generation via ammonia decomposition is systematically discussed.

Achieving single-atom dispersion of metal active components remains daunting. Here, we summarized several key synthesis methods and applications of high-loading SACs, hoping to highlight important research areas for future development.

Three approaches for enhancing OER activity and selectivity for hydrogen production in seawater electrolysis.

Various strategies for optimization of Ir-based OER catalysts are summarized, including elemental doping, surface engineering, atomic utilization and support engineering.

This minireview focuses on the synthesis of core–shell nanostructured magnesium-based materials to achieve hydrogen storage performances and analyses the mechanistic effects of this unique structure.

The current challenges and opportunities faced by HT-PEMFCs are discussed, as well as possible future solutions. This review can provide guidance for the future development of high-performance HT-PEMFC catalysts.

This review discusses the OER reaction mechanism (AEM and LOM) and the research progress of MnO₂-based OER catalysts. The optimization strategy of MnO₂-based catalysts was summarized.

Proton exchange membrane fuel cells (PEMFCs) have great potential to become the next generation green energy technique, but its application is limited by the slow kinetics of the cathode oxygen reduction reaction (ORR) in acidic medium.

Electrochemical impedance spectroscopy of PEM fuel cells under varying hydrogen concentrations reveals the origins of the correlation between hydrogen partial pressure and fuel cell performance.

An optimized potential window for efficient platinum electrodissolution, the first step of a Pt recycling process, is proposed.

Ni–Fe oxides were prepared by the oxalate pathway and heat-treated at three different temperatures. An outstanding performance was achieved in AEMWE by NiFeOx 450-anode-based MEA.

In situ PM-IRRAS provides information about the reaction products of ammonia electrooxidation on the surface of Pt/C nanoparticles and in the bulk of electrolyte.

This study investigates the oxygen reduction reaction activity of transition-metal-doped ZIF-8 and carbon-nanotube-based composite catalysts in alkaline media and their performance in anion-exchange membrane fuel cells using an Aemion+® 15 μm AEM.

New high-performance high temperature proton exchange membranes have been developed for fuel cell applications.

MEAs with various cathode Pt loadings were elaborated and aged using a multiple-stressor accelerated stress test (AST) in a segmented PEMFC.

This study presents electrochemical performance loss and correlated material degradation of an electrocatalyst, nitrogen-doped graphene integrated with a metal–organic framework (N-G/MOF), by the effect of H₂O₂-derived oxidative species.

HER electrocatalysts were synthesized starting from metal-phthalocyanine. The higher pyrolysis temperature is beneficial and associated with the formation of nanoparticles. The addition of the second and third metal is also beneficial for HER.

A three-dimensional carbon nanofiber (CNF) with a high graphitization degree was fabricated via high temperature treatment of polyaniline network. The CNF-1200 used as platinum-based catalyst ORR support exhibited excellent corrosion resistance.