Field-Free Improvement of Oxygen Evolution Reaction in Magnetic Two-Dimensional Heterostructures

Ziren Xiong; Ce Hu; Xingfang Luo; Wenda Zhou; Zhenzhen Jiang; Yong Yang; Ting Yu; Wen Lei; Cailei Yuan

doi:10.1021/acs.nanolett.1c03981

Field-Free Improvement of Oxygen Evolution Reaction in Magnetic Two-Dimensional Heterostructures

Ziren Xiong, Ce Hu, Xingfang Luo, Wenda Zhou, Zhenzhen Jiang, Yong Yang, Ting Yu, Wen Lei, Cailei Yuan

Electrical, Electronic and Computer Engineering

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

59 Citations (Scopus)

Abstract

Ferromagnetic (FM) electrocatalysts have been demonstrated to reduce the kinetic barrier of oxygen evolution reaction (OER) by spin-dependent kinetics and thus enhance the efficiency fundamentally. Accordingly, FM two-dimensional (2D) materials with unique physicochemical properties are expected to be promising oxygen-evolution catalysts; however, related research is yet to be reported due to their air-instabilities and low Curie temperatures (TC). Here, based on the synthesis of 2D air-stable FM Cr2Te3 nanosheets with a low TC around 200 K, room-temperature ferromagnetism is achieved in Cr2Te3 by proximity to an antiferromagnetic (AFM) CrOOH, demonstrating the accomplishment of long-ranged FM ordering in Cr2Te3 because the magnetic proximity effect stems from paramagnetic (PM)/AFM heterostructure. Therefore, the OER performance can be permanently promoted (without applied magnetic field due to nonvolatile nature of spin) after magnetization. This work demonstrates that a representative PM/AFM 2D heterostructure, Cr2Te3/CrOOH, is expected to be a high-efficient magnetic heterostructure catalysts for oxygen-evolution.

Original language	English
Pages (from-to)	10486-10493
Number of pages	8
Journal	Nano Letters
Volume	21
Issue number	24
Early online date	3 Dec 2021
DOIs	https://doi.org/10.1021/acs.nanolett.1c03981
Publication status	Published - 22 Dec 2021

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10.1021/acs.nanolett.1c03981

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title = "Field-Free Improvement of Oxygen Evolution Reaction in Magnetic Two-Dimensional Heterostructures",

abstract = "Ferromagnetic (FM) electrocatalysts have been demonstrated to reduce the kinetic barrier of oxygen evolution reaction (OER) by spin-dependent kinetics and thus enhance the efficiency fundamentally. Accordingly, FM two-dimensional (2D) materials with unique physicochemical properties are expected to be promising oxygen-evolution catalysts; however, related research is yet to be reported due to their air-instabilities and low Curie temperatures (TC). Here, based on the synthesis of 2D air-stable FM Cr2Te3 nanosheets with a low TC around 200 K, room-temperature ferromagnetism is achieved in Cr2Te3 by proximity to an antiferromagnetic (AFM) CrOOH, demonstrating the accomplishment of long-ranged FM ordering in Cr2Te3 because the magnetic proximity effect stems from paramagnetic (PM)/AFM heterostructure. Therefore, the OER performance can be permanently promoted (without applied magnetic field due to nonvolatile nature of spin) after magnetization. This work demonstrates that a representative PM/AFM 2D heterostructure, Cr2Te3/CrOOH, is expected to be a high-efficient magnetic heterostructure catalysts for oxygen-evolution. ",

keywords = "Field-free, magnetic proximity effect, magnetic two-dimensional heterostructures, oxygen evolution reaction",

author = "Ziren Xiong and Ce Hu and Xingfang Luo and Wenda Zhou and Zhenzhen Jiang and Yong Yang and Ting Yu and Wen Lei and Cailei Yuan",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grants 51871115, 52171213, 51761017, and 52061017), Project of Academic and Technological Leaders in Jiangxi Province (Grants 20204BCJ22036 and 20204BCJ23004), and Natural Science Foundation of Jiangxi Province (Grant 20202BABL202021). Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

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doi = "10.1021/acs.nanolett.1c03981",

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AU - Xiong, Ziren

AU - Hu, Ce

AU - Luo, Xingfang

AU - Zhou, Wenda

AU - Jiang, Zhenzhen

AU - Yang, Yong

AU - Yu, Ting

AU - Lei, Wen

AU - Yuan, Cailei

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grants 51871115, 52171213, 51761017, and 52061017), Project of Academic and Technological Leaders in Jiangxi Province (Grants 20204BCJ22036 and 20204BCJ23004), and Natural Science Foundation of Jiangxi Province (Grant 20202BABL202021). Publisher Copyright: © 2021 American Chemical Society.

PY - 2021/12/22

Y1 - 2021/12/22

N2 - Ferromagnetic (FM) electrocatalysts have been demonstrated to reduce the kinetic barrier of oxygen evolution reaction (OER) by spin-dependent kinetics and thus enhance the efficiency fundamentally. Accordingly, FM two-dimensional (2D) materials with unique physicochemical properties are expected to be promising oxygen-evolution catalysts; however, related research is yet to be reported due to their air-instabilities and low Curie temperatures (TC). Here, based on the synthesis of 2D air-stable FM Cr2Te3 nanosheets with a low TC around 200 K, room-temperature ferromagnetism is achieved in Cr2Te3 by proximity to an antiferromagnetic (AFM) CrOOH, demonstrating the accomplishment of long-ranged FM ordering in Cr2Te3 because the magnetic proximity effect stems from paramagnetic (PM)/AFM heterostructure. Therefore, the OER performance can be permanently promoted (without applied magnetic field due to nonvolatile nature of spin) after magnetization. This work demonstrates that a representative PM/AFM 2D heterostructure, Cr2Te3/CrOOH, is expected to be a high-efficient magnetic heterostructure catalysts for oxygen-evolution.

AB - Ferromagnetic (FM) electrocatalysts have been demonstrated to reduce the kinetic barrier of oxygen evolution reaction (OER) by spin-dependent kinetics and thus enhance the efficiency fundamentally. Accordingly, FM two-dimensional (2D) materials with unique physicochemical properties are expected to be promising oxygen-evolution catalysts; however, related research is yet to be reported due to their air-instabilities and low Curie temperatures (TC). Here, based on the synthesis of 2D air-stable FM Cr2Te3 nanosheets with a low TC around 200 K, room-temperature ferromagnetism is achieved in Cr2Te3 by proximity to an antiferromagnetic (AFM) CrOOH, demonstrating the accomplishment of long-ranged FM ordering in Cr2Te3 because the magnetic proximity effect stems from paramagnetic (PM)/AFM heterostructure. Therefore, the OER performance can be permanently promoted (without applied magnetic field due to nonvolatile nature of spin) after magnetization. This work demonstrates that a representative PM/AFM 2D heterostructure, Cr2Te3/CrOOH, is expected to be a high-efficient magnetic heterostructure catalysts for oxygen-evolution.

KW - Field-free

KW - magnetic proximity effect

KW - magnetic two-dimensional heterostructures

KW - oxygen evolution reaction

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Field-Free Improvement of Oxygen Evolution Reaction in Magnetic Two-Dimensional Heterostructures

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