---
_id: '14434'
abstract:
- lang: eng
  text: High entropy alloys (HEAs) are highly suitable candidate catalysts for oxygen
    evolution and reduction reactions (OER/ORR) as they offer numerous parameters
    for optimizing the electronic structure and catalytic sites. Herein, FeCoNiMoW
    HEA nanoparticles are synthesized using a solution‐based low‐temperature approach.
    Such FeCoNiMoW nanoparticles show high entropy properties, subtle lattice distortions,
    and modulated electronic structure, leading to superior OER performance with an
    overpotential of 233 mV at 10 mA cm<jats:sup>−2</jats:sup> and 276 mV at 100 mA cm<jats:sup>−2</jats:sup>.
    Density functional theory calculations reveal the electronic structures of the
    FeCoNiMoW active sites with an optimized d‐band center position that enables suitable
    adsorption of OOH* intermediates and reduces the Gibbs free energy barrier in
    the OER process. Aqueous zinc–air batteries (ZABs) based on this HEA demonstrate
    a high open circuit potential of 1.59 V, a peak power density of 116.9 mW cm<jats:sup>−2</jats:sup>,
    a specific capacity of 857 mAh g<jats:sub>Zn</jats:sub><jats:sup>−1</jats:sup><jats:sub>,</jats:sub>
    and excellent stability for over 660 h of continuous charge–discharge cycles.
    Flexible and solid ZABs are also assembled and tested, displaying excellent charge–discharge
    performance at different bending angles. This work shows the significance of 4d/5d
    metal‐modulated electronic structure and optimized adsorption ability to improve
    the performance of OER/ORR, ZABs, and beyond.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: The authors acknowledge funding from Generalitat de Catalunya 2021
  SGR 01581; the project COMBENERGY, PID2019-105490RB-C32, from the Spanish Ministerio
  de Ciencia e Innovación; the National Natural Science Foundation of China (22102002);
  the Anhui Provincial Natural Science Foundation (2108085QE192); Zhejiang Province
  key research and development project (2023C01191); the Foundation of State Key Laboratory
  of High-efficiency Utilization of Coal and Green Chemical Engineering (GrantNo.2022-K31);
  and The Key Research and Development Program of Hebei Province (20314305D). IREC
  is funded by the CERCA Programme from the Generalitat de Catalunya. L.L.Y. thanks
  the China Scholarship Council (CSC) for the scholarship support (202008130132).
  This research was supported by the Scientific Service Units (SSU) of ISTA (Institute
  of Science and Technology Austria) through resources provided by the Electron Microscopy
  Facility (EMF). S.L., S.H., and M.I. acknowledge funding by ISTA and the Werner
  Siemens.
article_number: '2303719'
article_processing_charge: No
article_type: original
author:
- first_name: Ren
  full_name: He, Ren
  last_name: He
- first_name: Linlin
  full_name: Yang, Linlin
  last_name: Yang
- first_name: Yu
  full_name: Zhang, Yu
  last_name: Zhang
- first_name: Daochuan
  full_name: Jiang, Daochuan
  last_name: Jiang
- first_name: Seungho
  full_name: Lee, Seungho
  id: BB243B88-D767-11E9-B658-BC13E6697425
  last_name: Lee
  orcid: 0000-0002-6962-8598
- first_name: Sharona
  full_name: Horta, Sharona
  id: 03a7e858-01b1-11ec-8b71-99ae6c4a05bc
  last_name: Horta
- first_name: Zhifu
  full_name: Liang, Zhifu
  last_name: Liang
- first_name: Xuan
  full_name: Lu, Xuan
  last_name: Lu
- first_name: Ahmad
  full_name: Ostovari Moghaddam, Ahmad
  last_name: Ostovari Moghaddam
- first_name: Junshan
  full_name: Li, Junshan
  last_name: Li
- first_name: Maria
  full_name: Ibáñez, Maria
  id: 43C61214-F248-11E8-B48F-1D18A9856A87
  last_name: Ibáñez
  orcid: 0000-0001-5013-2843
- first_name: Ying
  full_name: Xu, Ying
  last_name: Xu
- first_name: Yingtang
  full_name: Zhou, Yingtang
  last_name: Zhou
- first_name: Andreu
  full_name: Cabot, Andreu
  last_name: Cabot
citation:
  ama: He R, Yang L, Zhang Y, et al. A 3d‐4d‐5d high entropy alloy as a bifunctional
    oxygen catalyst for robust aqueous zinc–air batteries. <i>Advanced Materials</i>.
    2023. doi:<a href="https://doi.org/10.1002/adma.202303719">10.1002/adma.202303719</a>
  apa: He, R., Yang, L., Zhang, Y., Jiang, D., Lee, S., Horta, S., … Cabot, A. (2023).
    A 3d‐4d‐5d high entropy alloy as a bifunctional oxygen catalyst for robust aqueous
    zinc–air batteries. <i>Advanced Materials</i>. Wiley. <a href="https://doi.org/10.1002/adma.202303719">https://doi.org/10.1002/adma.202303719</a>
  chicago: He, Ren, Linlin Yang, Yu Zhang, Daochuan Jiang, Seungho Lee, Sharona Horta,
    Zhifu Liang, et al. “A 3d‐4d‐5d High Entropy Alloy as a Bifunctional Oxygen Catalyst
    for Robust Aqueous Zinc–Air Batteries.” <i>Advanced Materials</i>. Wiley, 2023.
    <a href="https://doi.org/10.1002/adma.202303719">https://doi.org/10.1002/adma.202303719</a>.
  ieee: R. He <i>et al.</i>, “A 3d‐4d‐5d high entropy alloy as a bifunctional oxygen
    catalyst for robust aqueous zinc–air batteries,” <i>Advanced Materials</i>. Wiley,
    2023.
  ista: He R, Yang L, Zhang Y, Jiang D, Lee S, Horta S, Liang Z, Lu X, Ostovari Moghaddam
    A, Li J, Ibáñez M, Xu Y, Zhou Y, Cabot A. 2023. A 3d‐4d‐5d high entropy alloy
    as a bifunctional oxygen catalyst for robust aqueous zinc–air batteries. Advanced
    Materials., 2303719.
  mla: He, Ren, et al. “A 3d‐4d‐5d High Entropy Alloy as a Bifunctional Oxygen Catalyst
    for Robust Aqueous Zinc–Air Batteries.” <i>Advanced Materials</i>, 2303719, Wiley,
    2023, doi:<a href="https://doi.org/10.1002/adma.202303719">10.1002/adma.202303719</a>.
  short: R. He, L. Yang, Y. Zhang, D. Jiang, S. Lee, S. Horta, Z. Liang, X. Lu, A.
    Ostovari Moghaddam, J. Li, M. Ibáñez, Y. Xu, Y. Zhou, A. Cabot, Advanced Materials
    (2023).
date_created: 2023-10-17T10:52:23Z
date_published: 2023-07-24T00:00:00Z
date_updated: 2023-12-13T13:03:23Z
day: '24'
department:
- _id: MaIb
doi: 10.1002/adma.202303719
external_id:
  isi:
  - '001083876900001'
  pmid:
  - '37487245'
isi: 1
keyword:
- Mechanical Engineering
- Mechanics of Materials
- General Materials Science
language:
- iso: eng
month: '07'
oa_version: None
pmid: 1
project:
- _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A
  name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of
    Semiconductors for Waste Heat Recovery'
publication: Advanced Materials
publication_identifier:
  issn:
  - 0935-9648
  - 1521-4095
publication_status: epub_ahead
publisher: Wiley
quality_controlled: '1'
status: public
title: A 3d‐4d‐5d high entropy alloy as a bifunctional oxygen catalyst for robust
  aqueous zinc–air batteries
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '9066'
abstract:
- lang: eng
  text: The novel electronic state of the canted antiferromagnetic (AFM) insulator,
    strontium iridate (Sr2IrO4) has been well described by the spin-orbit-entangled
    isospin Jeff = 1/2, but the role of isospin in transport phenomena remains poorly
    understood. In this study, antiferromagnet-based spintronic functionality is demonstrated
    by combining unique characteristics of the isospin state in Sr2IrO4. Based on
    magnetic and transport measurements, large and highly anisotropic magnetoresistance
    (AMR) is obtained by manipulating the antiferromagnetic isospin domains. First-principles
    calculations suggest that electrons whose isospin directions are strongly coupled
    to in-plane net magnetic moment encounter the isospin mismatch when moving across
    antiferromagnetic domain boundaries, which generates a high resistance state.
    By rotating a magnetic field that aligns in-plane net moments and removes domain
    boundaries, the macroscopically-ordered isospins govern dynamic transport through
    the system, which leads to the extremely angle-sensitive AMR. As with this work
    that establishes a link between isospins and magnetotransport in strongly spin-orbit-coupled
    AFM Sr2IrO4, the peculiar AMR effect provides a beneficial foundation for fundamental
    and applied research on AFM spintronics.
article_number: '1805564'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Nara
  full_name: Lee, Nara
  last_name: Lee
- first_name: Eunjung
  full_name: Ko, Eunjung
  last_name: Ko
- first_name: Hwan Young
  full_name: Choi, Hwan Young
  last_name: Choi
- first_name: Yun Jeong
  full_name: Hong, Yun Jeong
  last_name: Hong
- first_name: Muhammad
  full_name: Nauman, Muhammad
  id: 32c21954-2022-11eb-9d5f-af9f93c24e71
  last_name: Nauman
  orcid: 0000-0002-2111-4846
- first_name: Woun
  full_name: Kang, Woun
  last_name: Kang
- first_name: Hyoung Joon
  full_name: Choi, Hyoung Joon
  last_name: Choi
- first_name: Young Jai
  full_name: Choi, Young Jai
  last_name: Choi
- first_name: Younjung
  full_name: Jo, Younjung
  last_name: Jo
citation:
  ama: Lee N, Ko E, Choi HY, et al. Antiferromagnet‐based spintronic functionality
    by controlling isospin domains in a layered perovskite iridate. <i>Advanced Materials</i>.
    2018;30(52). doi:<a href="https://doi.org/10.1002/adma.201805564">10.1002/adma.201805564</a>
  apa: Lee, N., Ko, E., Choi, H. Y., Hong, Y. J., Nauman, M., Kang, W., … Jo, Y. (2018).
    Antiferromagnet‐based spintronic functionality by controlling isospin domains
    in a layered perovskite iridate. <i>Advanced Materials</i>. Wiley. <a href="https://doi.org/10.1002/adma.201805564">https://doi.org/10.1002/adma.201805564</a>
  chicago: Lee, Nara, Eunjung Ko, Hwan Young Choi, Yun Jeong Hong, Muhammad Nauman,
    Woun Kang, Hyoung Joon Choi, Young Jai Choi, and Younjung Jo. “Antiferromagnet‐based
    Spintronic Functionality by Controlling Isospin Domains in a Layered Perovskite
    Iridate.” <i>Advanced Materials</i>. Wiley, 2018. <a href="https://doi.org/10.1002/adma.201805564">https://doi.org/10.1002/adma.201805564</a>.
  ieee: N. Lee <i>et al.</i>, “Antiferromagnet‐based spintronic functionality by controlling
    isospin domains in a layered perovskite iridate,” <i>Advanced Materials</i>, vol.
    30, no. 52. Wiley, 2018.
  ista: Lee N, Ko E, Choi HY, Hong YJ, Nauman M, Kang W, Choi HJ, Choi YJ, Jo Y. 2018.
    Antiferromagnet‐based spintronic functionality by controlling isospin domains
    in a layered perovskite iridate. Advanced Materials. 30(52), 1805564.
  mla: Lee, Nara, et al. “Antiferromagnet‐based Spintronic Functionality by Controlling
    Isospin Domains in a Layered Perovskite Iridate.” <i>Advanced Materials</i>, vol.
    30, no. 52, 1805564, Wiley, 2018, doi:<a href="https://doi.org/10.1002/adma.201805564">10.1002/adma.201805564</a>.
  short: N. Lee, E. Ko, H.Y. Choi, Y.J. Hong, M. Nauman, W. Kang, H.J. Choi, Y.J.
    Choi, Y. Jo, Advanced Materials 30 (2018).
date_created: 2021-02-02T15:50:58Z
date_published: 2018-10-29T00:00:00Z
date_updated: 2021-02-03T13:58:39Z
day: '29'
doi: 10.1002/adma.201805564
extern: '1'
external_id:
  arxiv:
  - '1811.04562'
intvolume: '        30'
issue: '52'
keyword:
- Mechanical Engineering
- General Materials Science
- Mechanics of Materials
language:
- iso: eng
month: '10'
oa_version: Preprint
publication: Advanced Materials
publication_identifier:
  issn:
  - 0935-9648
  - 1521-4095
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Antiferromagnet‐based spintronic functionality by controlling isospin domains
  in a layered perovskite iridate
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 30
year: '2018'
...