Fe2+/Fe3+ Cycling for Coupling Self-Powered Hydrogen Evolution and Preparation of Electrode Catalysts

Chang Chen; Zhengqian Fu; Fenggang Qi; Yafeng Chen; Ge Meng; Ziwei Chang; Fantao Kong; Libo Zhu; Han Tian; Haitao Huang; Xiangzhi Cui; Jianlin Shi

doi:10.1002/anie.202207226

Fe²⁺/Fe³⁺ Cycling for Coupling Self-Powered Hydrogen Evolution and Preparation of Electrode Catalysts

Chang Chen
, Zhengqian Fu
, Fenggang Qi
, Yafeng Chen
, Ge Meng
, Ziwei Chang
, Fantao Kong
, Libo Zhu
, Han Tian
, Haitao Huang
, Xiangzhi Cui^*
, Jianlin Shi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

A novel Zn−Fe flow battery featuring an Fe³⁺ reduction reaction (Fe³⁺RR)-coupled zinc oxidation, and an Fe²⁺ oxidation reaction (Fe²⁺OR)-coupled hydrogen evolution reaction (HER) system as well, was established. This battery is capable of driving two Fe²⁺OR-coupled HER systems in series based on the above Fe²⁺/Fe³⁺ cycling, for efficient self-powered hydrogen evolution. Meanwhile, this Fe²⁺/Fe³⁺ cycling enables the preparation of a multifunctional catalyst, Pt-3@SXNS (siloxene nanosheet), by the Fe²⁺OR-promoted dispersion of Pt nanoparticles on SXNS; alternatively, this support could be obtained by Fe³⁺RR-assisted exfoliation using Fe³⁺ from the anolyte of Fe²⁺OR-coupled HER. The Pt-3@SXNS catalyst exhibits excellent catalytic activities toward Fe³⁺RR in the Zn−Fe flow battery, HER, and Fe²⁺OR in the electrolyzer, which is attributed to the strong electronic interaction between Pt and Si. This work offers a new strategy for energy storage and low-cost hydrogen production from acidic wastewater.

Original language	English
Article number	e202207226
Journal	Angewandte Chemie - International Edition
Volume	61
Issue number	32
DOIs	https://doi.org/10.1002/anie.202207226
State	Published - 8 Aug 2022
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Fe/Fe
Hydrogen Spillover
Water Splitting
Zn−Fe Flow Batteries

Access to Document

10.1002/anie.202207226

Cite this

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title = "Fe2+/Fe3+ Cycling for Coupling Self-Powered Hydrogen Evolution and Preparation of Electrode Catalysts",

abstract = "A novel Zn−Fe flow battery featuring an Fe3+ reduction reaction (Fe3+RR)-coupled zinc oxidation, and an Fe2+ oxidation reaction (Fe2+OR)-coupled hydrogen evolution reaction (HER) system as well, was established. This battery is capable of driving two Fe2+OR-coupled HER systems in series based on the above Fe2+/Fe3+ cycling, for efficient self-powered hydrogen evolution. Meanwhile, this Fe2+/Fe3+ cycling enables the preparation of a multifunctional catalyst, Pt-3@SXNS (siloxene nanosheet), by the Fe2+OR-promoted dispersion of Pt nanoparticles on SXNS; alternatively, this support could be obtained by Fe3+RR-assisted exfoliation using Fe3+ from the anolyte of Fe2+OR-coupled HER. The Pt-3@SXNS catalyst exhibits excellent catalytic activities toward Fe3+RR in the Zn−Fe flow battery, HER, and Fe2+OR in the electrolyzer, which is attributed to the strong electronic interaction between Pt and Si. This work offers a new strategy for energy storage and low-cost hydrogen production from acidic wastewater.",

keywords = "Fe/Fe, Hydrogen Spillover, Water Splitting, Zn−Fe Flow Batteries",

author = "Chang Chen and Zhengqian Fu and Fenggang Qi and Yafeng Chen and Ge Meng and Ziwei Chang and Fantao Kong and Libo Zhu and Han Tian and Haitao Huang and Xiangzhi Cui and Jianlin Shi",

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year = "2022",

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T1 - Fe2+/Fe3+ Cycling for Coupling Self-Powered Hydrogen Evolution and Preparation of Electrode Catalysts

AU - Chen, Chang

AU - Fu, Zhengqian

AU - Qi, Fenggang

AU - Chen, Yafeng

AU - Meng, Ge

AU - Chang, Ziwei

AU - Kong, Fantao

AU - Zhu, Libo

AU - Tian, Han

AU - Huang, Haitao

AU - Cui, Xiangzhi

AU - Shi, Jianlin

PY - 2022/8/8

Y1 - 2022/8/8

N2 - A novel Zn−Fe flow battery featuring an Fe3+ reduction reaction (Fe3+RR)-coupled zinc oxidation, and an Fe2+ oxidation reaction (Fe2+OR)-coupled hydrogen evolution reaction (HER) system as well, was established. This battery is capable of driving two Fe2+OR-coupled HER systems in series based on the above Fe2+/Fe3+ cycling, for efficient self-powered hydrogen evolution. Meanwhile, this Fe2+/Fe3+ cycling enables the preparation of a multifunctional catalyst, Pt-3@SXNS (siloxene nanosheet), by the Fe2+OR-promoted dispersion of Pt nanoparticles on SXNS; alternatively, this support could be obtained by Fe3+RR-assisted exfoliation using Fe3+ from the anolyte of Fe2+OR-coupled HER. The Pt-3@SXNS catalyst exhibits excellent catalytic activities toward Fe3+RR in the Zn−Fe flow battery, HER, and Fe2+OR in the electrolyzer, which is attributed to the strong electronic interaction between Pt and Si. This work offers a new strategy for energy storage and low-cost hydrogen production from acidic wastewater.

AB - A novel Zn−Fe flow battery featuring an Fe3+ reduction reaction (Fe3+RR)-coupled zinc oxidation, and an Fe2+ oxidation reaction (Fe2+OR)-coupled hydrogen evolution reaction (HER) system as well, was established. This battery is capable of driving two Fe2+OR-coupled HER systems in series based on the above Fe2+/Fe3+ cycling, for efficient self-powered hydrogen evolution. Meanwhile, this Fe2+/Fe3+ cycling enables the preparation of a multifunctional catalyst, Pt-3@SXNS (siloxene nanosheet), by the Fe2+OR-promoted dispersion of Pt nanoparticles on SXNS; alternatively, this support could be obtained by Fe3+RR-assisted exfoliation using Fe3+ from the anolyte of Fe2+OR-coupled HER. The Pt-3@SXNS catalyst exhibits excellent catalytic activities toward Fe3+RR in the Zn−Fe flow battery, HER, and Fe2+OR in the electrolyzer, which is attributed to the strong electronic interaction between Pt and Si. This work offers a new strategy for energy storage and low-cost hydrogen production from acidic wastewater.

KW - Fe/Fe

KW - Hydrogen Spillover

KW - Water Splitting

KW - Zn−Fe Flow Batteries

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