Constructing molecule-metal relay catalysis over heterophase metallene for high-performance rechargeable zinc-nitrate/ethanol batteries

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article numbere2311149120
Journal / PublicationProceedings of the National Academy of Sciences of the United States of America
Volume120
Issue number50
Online published8 Dec 2023
Publication statusPublished - 12 Dec 2023

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Abstract

Zinc-nitrate batteries can integrate energy supply, ammonia electrosynthesis, and sewage disposal into one electrochemical device. However, current zinc-nitrate batteries still severely suffer from the limited energy density and poor rechargeability. Here, we report the synthesis of tetraphenylporphyrin (tpp)-modified heterophase (amorphous/crystalline) rhodium-copper alloy metallenes (RhCu M-tpp). Using RhCu M-tpp as a bifunctional catalyst for nitrate reduction reaction (NO3RR) and ethanol oxidation reaction in neutral solution, a highly rechargeable and low-overpotential zinc-nitrate/ethanol battery is successfully constructed, which exhibits outstanding energy density of 117364.6 Wh kg-1cat, superior rate capability, excellent cycling stability of ~400 cycles, and potential ammonium acetate production. Ex/in situ experimental studies and theoretical calculations reveal that there is a molecule-metal relay catalysis in NO3RR over RhCu M-tpp that significantly facilitates the ammonia selectivity and reaction kinetics via a low energy barrier pathway. This work provides an effective design strategy of multifunctional metal-based catalysts toward the high-performance zinc-based hybrid energy systems. © 2023 the Author(s).

Research Area(s)

  • electrocatalytic nitrate reduction, metallene, relay catalysis, two-dimensional materials, zinc-nitrate/ethanol batteries

Citation Format(s)

Constructing molecule-metal relay catalysis over heterophase metallene for high-performance rechargeable zinc-nitrate/ethanol batteries. / Zhou, Jingwen; Xiong, Yuecheng; Sun, Mingzi et al.
In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 120, No. 50, e2311149120, 12.12.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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