# Mesoporous Single-Crystal High-Entropy Alloy

https://mdr.nims.go.jp/datasets/207684e4-c934-4597-ba0e-ad28bd5697ec

## File

- [Single Crystal_Revised_Manuscript JACS-2025-012602.pdf](https://mdr.nims.go.jp/filesets/a5fe4821-2a7e-443c-bdf6-0d7149a98f4e/download) ([Detail](https://mdr.nims.go.jp/filesets/a5fe4821-2a7e-443c-bdf6-0d7149a98f4e.md))

## Id

207684e4-c934-4597-ba0e-ad28bd5697ec

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-03T04:17:45.715837Z

## Updated at

2026-02-16T09:06:09.101953Z

## Published at

2026-05-26T23:33:24.670035Z

## Doi

https://doi.org/10.48505/nims.5751

## First published url

https://doi.org/10.1021/jacs.5c01260

## Date published

2025-06-04

## Recorded date published

2025-6-4

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Mesoporous Single-Crystal High-Entropy Alloy
  title_type: original
  lang: en

## Description

- description: Mesoporous high-entropy alloys (HEAs) represent a promising advancement
    in mesoporous metal, showing great potential for various applications. Their unique
    multimetallic uniformity, strong structural features, and high surface-active
    site exposure contribute to their practical catalytic ability. The catalytic efficiency
    of metal nanostructures depends on both their elemental compositions and crystallinity,
    with single-crystalline structures generally outperforming polycrystalline ones.
    However, synthesizing single-crystalline HEA nanostructures with defined mesoporosity
    remains challenging due to the complex fabrication process. This study introduces
    a block copolymer micelle-assisted soft-chemical strategy to create single-crystalline
    mesoporous HEAs (SCPHEAs). These structures feature uniformly sized mesopores
    that permeate throughout, maximizing the exposure of high-entropy alloy active
    sites, enhancing material utilization, and facilitating efficient mass and charge
    transport. The optimized SCPHEAs exhibit excellent electrocatalytic performance
    in methanol oxidation reactions, surpassing polycrystalline mesoporous HEAs, commercial
    Pt-C, and various recently reported precious metal-based HEAs and conventional
    alloy electrocatalysts. This superior performance is attributed to a synergistic
    effect that results from surface charge redistribution among different atomic
    entities, which enhances the adsorption of methanol and water molecules and mitigates
    intermediate CO poisoning. Our synthesis method enables the designing of a wide
    range of mesoporous HEAs with controllable morphology and crystallinity tailored
    for various catalytic applications and beyond.
  description_type: abstract
  lang: en

## Creator

- name: Ravi Nandan
  role: author
  organization: National Institute for Materials Science
- name: Ho Ngoc Nam
  role: author
- name: Quan Manh Phung
  role: author
- name: Hiroki Nara
  role: author
- name: Joel Henzie
  role: author
  orcid: https://orcid.org/0000-0002-9190-2645
  organization: National Institute for Materials Science
- name: Yusuke Yamauchi
  role: author
  orcid: https://orcid.org/0000-0001-7854-927X
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: High Entropy Alloy
  schema: not_defined
- subject: Electrocatalysis
  schema: not_defined
- subject: Machine Learning
  schema: not_defined
- subject: Mesoporous Metal
  schema: not_defined
- subject: Nanoparticle
  schema: not_defined

## Rights

- description: This document is the Accepted Manuscript version of a Published Work
    that appeared in final form in Journal of the American Chemical Society, copyright
    © 2025 American Chemical Society after peer review and technical editing by the
    publisher. To access the final edited and published work see https://doi.org/10.1021/jacs.5c01260.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-05-27
end_date: 2026-05-27

## Journal

- title: Journal of the American Chemical Society
  issn: '00027863'
  volume: '147'
  issue: '22'
  start_page: 18651
  end_page: 18661

## Conference



## Related item



## Funding

- identifier: JPMJER2003
  funder_name: Exploratory Research for Advanced Technology
- identifier: 20K05453
  funder_name: Japan Society for the Promotion of Science
- identifier: 24K17694
  funder_name: Japan Society for the Promotion of Science
- identifier: P220632
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



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## Fileset

- id: a5fe4821-2a7e-443c-bdf6-0d7149a98f4e
  filename: Single Crystal_Revised_Manuscript JACS-2025-012602.pdf
  content_type: application/pdf
  size: 6475734
  md5: 05cdb4ee0f5d0f213f745769a8998dd8

## Thumbnail

fileset_id: a5fe4821-2a7e-443c-bdf6-0d7149a98f4e
filename: Single Crystal_Revised_Manuscript JACS-2025-012602.pdf