Atomically Dispersed Pentacoordinated-Zirconium Catalyst with Axial Oxygen Ligand for Oxygen Reduction Reaction

Wang X, An Y, Liu L, Fang L, Liu Y, Zhang J, Qi H, Heine T, Li T, Kuc A, Yu M, Feng X (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 61

Article Number: e202209746

Journal Issue: 36

DOI: 10.1002/anie.202209746

Abstract

Single-atom catalysts (SACs), as promising alternatives to Pt-based catalysts, suffer from the limited choice of center metals and low single-atom loading. Here, we report a pentacoordinated Zr-based SAC with nontrivial axial O ligands (denoted O−Zr−N−C) for oxygen reduction reaction (ORR). The O ligand downshifts the d-band center of Zr and confers Zr sites with stable local structure and proper adsorption capability for intermediates. Consequently, the ORR performance of O−Zr−N−C prominently surpasses that of commercial Pt/C, achieving a half-wave potential of 0.91 V vs. reversible hydrogen electrode and outstanding durability (92 % current retention after 130-hour operation). Moreover, the Zr site shows good resistance towards aggregation, enabling the synthesis of Zr-based SAC with high loading (9.1 wt%). With the high-loading catalyst, the zinc-air battery (ZAB) delivers a record-high power density of 324 mW cm−2 among those of SAC-based ZABs.

Involved external institutions

Technische Universität Dresden DE Germany (DE) INL - International Iberian Nanotechnology Laboratory PT Portugal (PT) Northern Illinois University (NIU) US United States (USA) (US) Universität Ulm DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE)

How to cite

APA:

Wang, X., An, Y., Liu, L., Fang, L., Liu, Y., Zhang, J.,... Feng, X. (2022). Atomically Dispersed Pentacoordinated-Zirconium Catalyst with Axial Oxygen Ligand for Oxygen Reduction Reaction. Angewandte Chemie International Edition, 61(36). https://doi.org/10.1002/anie.202209746

MLA:

Wang, Xia, et al. "Atomically Dispersed Pentacoordinated-Zirconium Catalyst with Axial Oxygen Ligand for Oxygen Reduction Reaction." Angewandte Chemie International Edition 61.36 (2022).

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