# Modification of platinum surfaces with cerium species for promoting oxidative desorption of adsorbed sulfur

https://mdr.nims.go.jp/datasets/23705168-3a5c-4c17-abef-414677a9e4ff

## File

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## Id

23705168-3a5c-4c17-abef-414677a9e4ff

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-10-15T04:20:25.004746Z

## Updated at

2025-12-15T05:47:53.865862Z

## Published at

2025-12-18T10:08:24.644476Z

## Doi



## First published url

https://doi.org/10.1016/j.elecom.2025.108050

## Date published

2025-09-23

## Recorded date published

2025-11

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Modification of platinum surfaces with cerium species for promoting oxidative
    desorption of adsorbed sulfur
  title_type: original
  lang: en

## Description

- description: Adsorption of sulfur (S) significantly reduces the electrochemically
    active surface area of platinum (Pt) electrocatalysts in polymer electrolyte membrane
    fuel cells (PEMFCs), namely, S poisoning. Mitigation techniques against S poisoning
    are strongly desired for highly durable PEMFCs. A Pt single-crystal surface was
    demonstrated to be modified with cerium (Ce) species by being immersed in a Ce-containing
    aqueous solution with hydrogen (H2) gas bubbling or potential holding at −0.2
    V vs. Ag/AgCl. For a Ce-free Pt electrode, electrochemical responses characteristic
    of the adsorption/desorption of hydrogen and hydroxyl species at the bare Pt surface
    disappeared due to the adsorbed elemental sulfur, Sad, while the oxidative desorption
    of Sad from the Pt electrode occurred at around 0.80 V vs. Ag/AgCl. In contrast,
    for the Ce-modified Pt electrode, the oxidative desorption of Sad occurred at
    a potential around 0.3 V which is less positive (more negative) than that of Ce-free
    Pt electrode, showing the enhanced oxidative desorption capability due to the
    presence of Ce species on the surface. While the Ce species was desorbed from
    the Pt electrode simultaneously with the oxidative desorption of Sad, the Pt surface
    can be re-modified with the Ce species by H2 gas bubbling or potential holding
    at −0.2 V vs. Ag/AgCl, which is a similar condition to that of anode of PEMFC
    under operations. Thus, the Ce-modification of Pt surfaces potentially acts as
    a practical mitigation measure against the S poisoning.
  description_type: abstract
  lang: und

## Creator

- name: Tetsuro Morooka
  role: author
  orcid: https://orcid.org/0000-0003-3436-7030
  organization: National Institute for Materials Science
- name: Tamao Shishido
  role: author
- name: Takuya Nakanishi
  role: author
  orcid: https://orcid.org/0000-0002-1172-718X
  organization: National Institute for Materials Science
- name: Takuya Masuda
  role: author
  orcid: https://orcid.org/0000-0001-7462-2177
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: PEMFCs
  schema: not_defined
- subject: sulfur poisoning
  schema: not_defined
- subject: platinum
  schema: not_defined
- subject: single crystal
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Electrochemistry Communications
  issn: '13882481'
  volume: '180'
  article_number: '108050'

## Conference



## Related item



## Funding

- funder_name: New Energy and Industrial Technology Development Organization
- identifier: JPNP20003
  funder_name: New Energy and Industrial Technology Development Organization

## 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



## Software



## Custom property



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filename: 1-s2.0-S1388248125001900-main.pdf