This work provides an extensive literature review on both theoretical and experimental advances in HOR electrocatalysts for AEMFCs. In addition, this work provides new insights into new Ni-based electrocatalysts for the HOR in alkaline medium that are being developed in our group at the Technion, including RDE, XRD, XPS, TPD/TPR/TPO, SEM results and some aspects of DFT calculations.
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Acknowledgements. This work was partially funded by the Grand Technion Energy Program (GTEP), by the European Union's Horizon 2020 research and innovation programme under grant agreement No 721065, by the Ministry of Science, Technology & Space of Israel through the M.era-NET Transnational Call 2015, NEXTGAME project grant 3-12948, by the Ministry of National Infrastructure, Energy and Water Resources of Israel, and by the 2nd Israel National Research Center for Electrochemical Propulsion (INREP2-ISF).