Ultrahigh Oxygen Evolution Reaction Activity Achieved Using Ir Single Atoms on Amorphous CoOx Nanosheets

Chao Cai; Maoyu Wang; Shaobo Han; Qi Wang; Qing Zhang; Yuanmin Zhu; Xuming Yang; Duojie Wu; Xiaotao Zu; George E. Sterbinsky; Zhenxing Feng; Meng Gu

doi:10.1021/acscatal.0c04656

Ultrahigh Oxygen Evolution Reaction Activity Achieved Using Ir Single Atoms on Amorphous CoO_xNanosheets

Chao Cai (Co-first Author)
, Maoyu Wang (Co-first Author)
, Shaobo Han (Co-first Author)
, Qi Wang
, Qing Zhang
, Yuanmin Zhu
, Xuming Yang
, Duojie Wu
, Xiaotao Zu^*
, George E. Sterbinsky
, Zhenxing Feng^*
, Meng Gu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

214 Citations (Scopus)

Abstract

Developing efficient electrocatalysts for an oxygen evolution reaction (OER) is important for renewable energy storage. Here, we design high-density Ir single-atom catalysts supported by CoO_x amorphous nanosheets (ANSs) for the OER. Experimental results show that Ir single atoms are anchored by abundant surface-absorbed O in CoO_x ANSs. Ir single-atom catalysts possess ultrahigh mass activity that is 160-fold of commercial IrO₂. The OER of IrCoO_x ANSs reached a record low onset overpotential of less than 30 mV. In situ X-ray absorption spectroscopy reveals that Ir-O-Co pairs directly boosted the OER efficiency and enhanced the Ir stability. © 2020 American Chemical Society

Original language	English
Pages (from-to)	123-130
Journal	ACS Catalysis
Volume	11
Issue number	1
Online published	14 Dec 2020
DOIs	https://doi.org/10.1021/acscatal.0c04656
Publication status	Published - 1 Jan 2021
Externally published	Yes

Funding

This work is supported by the National Natural Science Foundation of China (21802065 and U1830204), Guangdong Provincial Key Laboratory of Energy Materials for Electric Power with Project No. 2018B030322001, Guangdong Innovative and Entrepreneurial Research Team Program (2016ZT06N500), Shenzhen Peacock Plan (KQTD2016022620054656), Shenzhen DRC project [2018]1433, and Shenzhen Clean Energy Research Institute (No. CERI-KY-2019-003). Z.F. thanks the startup funding from the Oregon State University. The XAS measurements were performed at the beamline 9-BM of the Advanced Photon Source, which is a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

amorphous nanosheets
cobalt oxides
hierarchical microstructures
Iridium oxides
single-atom catalysts

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10.1021/acscatal.0c04656

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Cite this

@article{610d643d0c904f829ca0933faddc818f,

title = "Ultrahigh Oxygen Evolution Reaction Activity Achieved Using Ir Single Atoms on Amorphous CoOx Nanosheets",

abstract = "Developing efficient electrocatalysts for an oxygen evolution reaction (OER) is important for renewable energy storage. Here, we design high-density Ir single-atom catalysts supported by CoOx amorphous nanosheets (ANSs) for the OER. Experimental results show that Ir single atoms are anchored by abundant surface-absorbed O in CoOx ANSs. Ir single-atom catalysts possess ultrahigh mass activity that is 160-fold of commercial IrO2. The OER of IrCoOx ANSs reached a record low onset overpotential of less than 30 mV. In situ X-ray absorption spectroscopy reveals that Ir-O-Co pairs directly boosted the OER efficiency and enhanced the Ir stability. {\textcopyright} 2020 American Chemical Society",

keywords = "amorphous nanosheets, cobalt oxides, hierarchical microstructures, Iridium oxides, single-atom catalysts",

author = "Chao Cai and Maoyu Wang and Shaobo Han and Qi Wang and Qing Zhang and Yuanmin Zhu and Xuming Yang and Duojie Wu and Xiaotao Zu and Sterbinsky, \{George E.\} and Zhenxing Feng and Meng Gu",

year = "2021",

month = jan,

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doi = "10.1021/acscatal.0c04656",

language = "English",

volume = "11",

pages = "123--130",

journal = "ACS Catalysis",

issn = "2155-5435",

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Ultrahigh Oxygen Evolution Reaction Activity Achieved Using Ir Single Atoms on Amorphous CoO_xNanosheets. / Cai, Chao (Co-first Author); Wang, Maoyu (Co-first Author); Han, Shaobo (Co-first Author) et al.
In: ACS Catalysis, Vol. 11, No. 1, 01.01.2021, p. 123-130.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Ultrahigh Oxygen Evolution Reaction Activity Achieved Using Ir Single Atoms on Amorphous CoOx Nanosheets

AU - Cai, Chao

AU - Wang, Maoyu

AU - Han, Shaobo

AU - Wang, Qi

AU - Zhang, Qing

AU - Zhu, Yuanmin

AU - Yang, Xuming

AU - Wu, Duojie

AU - Zu, Xiaotao

AU - Sterbinsky, George E.

AU - Feng, Zhenxing

AU - Gu, Meng

PY - 2021/1/1

Y1 - 2021/1/1

N2 - Developing efficient electrocatalysts for an oxygen evolution reaction (OER) is important for renewable energy storage. Here, we design high-density Ir single-atom catalysts supported by CoOx amorphous nanosheets (ANSs) for the OER. Experimental results show that Ir single atoms are anchored by abundant surface-absorbed O in CoOx ANSs. Ir single-atom catalysts possess ultrahigh mass activity that is 160-fold of commercial IrO2. The OER of IrCoOx ANSs reached a record low onset overpotential of less than 30 mV. In situ X-ray absorption spectroscopy reveals that Ir-O-Co pairs directly boosted the OER efficiency and enhanced the Ir stability. © 2020 American Chemical Society

AB - Developing efficient electrocatalysts for an oxygen evolution reaction (OER) is important for renewable energy storage. Here, we design high-density Ir single-atom catalysts supported by CoOx amorphous nanosheets (ANSs) for the OER. Experimental results show that Ir single atoms are anchored by abundant surface-absorbed O in CoOx ANSs. Ir single-atom catalysts possess ultrahigh mass activity that is 160-fold of commercial IrO2. The OER of IrCoOx ANSs reached a record low onset overpotential of less than 30 mV. In situ X-ray absorption spectroscopy reveals that Ir-O-Co pairs directly boosted the OER efficiency and enhanced the Ir stability. © 2020 American Chemical Society

KW - amorphous nanosheets

KW - cobalt oxides

KW - hierarchical microstructures

KW - Iridium oxides

KW - single-atom catalysts

UR - https://www.scopus.com/pages/publications/85098971511

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85098971511&origin=recordpage

U2 - 10.1021/acscatal.0c04656

DO - 10.1021/acscatal.0c04656

M3 - RGC 21 - Publication in refereed journal

SN - 2155-5435

VL - 11

SP - 123

EP - 130

JO - ACS Catalysis

JF - ACS Catalysis

IS - 1

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