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Rational construction of efficient carbon-supported rare earth cerium nanoclusters as oxygen reduction reaction (ORR) is of great significance to promote the practical application of zinc-air batteries (ZABs). Herein, N doped conductive carbon black anchored CeO nanoclusters (CeO Clusters/NC) for the ORR is reported. The volatile cerium species vaporized by CeO nanoclusters at high temperatures are captured by nitrogen-rich carbon carriers to form highly dispersed Ce-Nx active sites. Benefiting from the coupling effect between oxygen vacancies-enriched CeO nanoclusters and highly dispersed Ce-Nx sites, the prepared 2CeO Clusters/NC catalyst possesses an ORR half-wave potential of 0.88 V, superior electrochemical stability, and better methanol tolerance compared to commercial Pt/C catalysts. Moreover, the 2CeO Clusters/NC involved liquid ZABs show excellent energy efficiency, superior stability, and a high energy density of 982 Wh kg at 10 mA cm.
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| http://dx.doi.org/10.1016/j.jcis.2023.12.124 | DOI Listing |
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