Using metal oxide nanoparticle additives can protect platinum group metal-free electrocatalysts from the attack of oxidizing radicals. Fuel cells with these radical scavengers have better durability than fuel cells without the scavengers.
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References
Thompson, S. T. & Papageorgopoulos, D. Platinum group metal-free catalysts boost cost competitiveness of fuel cell vehicles. Nat. Catal. 2, 558–561 (2019). This comment analyses the prospect of PGM-free catalysts in fuel cell vehicles.
Shao, Y., Dodelet, J. P., Wu, G. & Zelenay, P. PGM-free cathode catalysts for PEM fuel cells: a mini-review on stability challenges. Adv. Mater. 31, 1807615 (2019). A review article that presents the stability challenges for the current PGM-free catalysts.
Wang, X. X., Swihart, M. T. & Wu, G. Achievements, challenges and perspectives on cathode catalysts in proton exchange membrane fuel cells for transportation. Nat. Catal. 2, 578–589 (2019). A review that describes the possible directions for improving the stability of catalysts.
Xie, H. et al. High-temperature pulse method for nanoparticle redispersion. J. Am. Chem. Soc. 142, 17364–17371 (2020). This paper reports the dispersion method for nanoparticles.
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This is a summary of: Xie, H. et al. Ta–TiOx nanoparticles as radical scavengers to improve the durability of Fe–N–C oxygen reduction catalysts. Nat. Energy https://doi.org/10.1038/s41560-022-00988-w (2022).
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Radical scavengers to protect platinum group metal-free electrocatalysts. Nat Energy 7, 220–221 (2022). https://doi.org/10.1038/s41560-022-00989-9
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DOI: https://doi.org/10.1038/s41560-022-00989-9
