# Enhancing hydrogen permeation barrier performance of ErCo2 magnetic refrigeration material via surface oxide layer formation

https://mdr.nims.go.jp/datasets/d1dbe0fa-0aa8-4d2c-98c0-3095b8b15791

## File

- [Nat Comm-17-2026-4952-Xu.pdf](https://mdr.nims.go.jp/filesets/02af1cef-2460-42c9-a645-1d836d846927/download) ([Detail](https://mdr.nims.go.jp/filesets/02af1cef-2460-42c9-a645-1d836d846927.md))

## Id

d1dbe0fa-0aa8-4d2c-98c0-3095b8b15791

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-10T00:36:44.963100Z

## Updated at

2026-06-10T01:41:19.002249Z

## Published at

2026-06-10T04:14:25.115115Z

## Doi



## First published url

https://doi.org/10.1038/s41467-026-71547-0

## Date published

2026-04-07

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Enhancing hydrogen permeation barrier performance of ErCo2 magnetic refrigeration
    material via surface oxide layer formation
  title_type: original
  lang: en

## Description

- description: 'The ErCo2 intermetallic compound exhibits a significant magnetocaloric
    effect at approximately 32 K and has potential applications as a magnetic refrigeration
    material for hydrogen liquefaction. However, exposure to a hydrogen atmosphere
    may lead to hydride formation, which weakens the magnetocaloric effect. Thus,
    preventing hydrogen permeation into ErCo2 is crucial. Herein, we present a cost
    effective and efficient method to enhance the hydrogen permeation barrier (HPB)
    performance of ErCo2 particles by using electroless Cu plating followed by the
    oxidation treatment to form a CuO layer with a thickness of a few micrometers.
    In experiments, ErCo2 particles with a 2 5 μm thick CuO surface layer exhibited
    a large magnetic entropy change value of 24 J kg⁻¹ K⁻¹ even after exposure to
    a H2 atmosphere at 1.27 MPa and 296 K for 7 d. Experimental analyses and first
    principles calculations revealed the potential of CuO as an HPB material for magnetic
    refrigeration. '
  description_type: abstract
  lang: und

## Creator

- name: Ya Xu
  role: author
  orcid: https://orcid.org/0000-0001-9067-5244
  organization: National Institute for Materials Science
- name: Keiji Oyoshi
  role: author
  orcid: https://orcid.org/0000-0002-0922-935X
  organization: National Institute for Materials Science
- name: Haruka Yoshikawa
  role: author
- name: Hiroyuki Takeya
  role: author
  orcid: https://orcid.org/0000-0001-9445-4705
  organization: National Institute for Materials Science
- name: Hiroshi Amekura
  role: author
  orcid: https://orcid.org/0000-0003-2148-8431
  organization: National Institute for Materials Science
- name: Takafumi D. Yamamoto
  role: author
  organization: National Institute for Materials Science
- name: Yoshitaka Matsushita
  role: author
  orcid: https://orcid.org/0000-0002-4968-8905
  organization: National Institute for Materials Science
- name: Alexei A. Belik
  role: author
  orcid: https://orcid.org/0000-0001-9031-2355
  organization: National Institute for Materials Science
- name: Miyoko Tanaka
  role: author
  orcid: https://orcid.org/0000-0003-2650-2845
  organization: National Institute for Materials Science
- name: Akiko T. Saito
  role: author
  orcid: https://orcid.org/0000-0001-5920-5965
  organization: National Institute for Materials Science
- name: Koji Kamiya
  role: author
  orcid: https://orcid.org/0000-0002-6765-4485
  organization: National Institute for Materials Science
- name: Yoshihiko Takeda
  role: author
  orcid: https://orcid.org/0000-0003-4961-3687
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC
ror: https://ror.org/

## Managing organization



## Keyword

- subject: magnetic refrigeration material
  schema: not_defined
- subject: hydrogen permeation barrier
  schema: not_defined
- subject: ErCo2
  schema: not_defined
- subject: CuO
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-06-04

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '17'
  issue: '1'
  article_number: '4952'

## Conference



## Related item



## Funding

- identifier: JPMJMI18A3
  funder_name: MEXT | Japan Science and Technology Agency
- identifier: JPMJCR22O3
  funder_name: MEXT | Japan Science and Technology Agency

## 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



## Energy level/transition state



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## Fileset

- id: 02af1cef-2460-42c9-a645-1d836d846927
  filename: Nat Comm-17-2026-4952-Xu.pdf
  content_type: application/pdf
  size: 5066434
  md5: a3bd17ea49c3eff480ab3c314155ba41

## Thumbnail

fileset_id: 02af1cef-2460-42c9-a645-1d836d846927
filename: Nat Comm-17-2026-4952-Xu.pdf