# Effect of Phosphate Addition to Electrolytes on Corrosion Behavior of Stainless Steels in Seawater Electrolysis

https://mdr.nims.go.jp/datasets/f42fbe69-8da2-4f92-9143-4e6da3af56e4

## File

- [Hashimoto-ACS Omega-Effect of Phosphate Additi.pdf](https://mdr.nims.go.jp/filesets/f1236981-e8df-4841-ac53-b0e8ee9ef510/download) ([Detail](https://mdr.nims.go.jp/filesets/f1236981-e8df-4841-ac53-b0e8ee9ef510.md))

## Id

f42fbe69-8da2-4f92-9143-4e6da3af56e4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-05-11T02:22:32.465914Z

## Updated at

2026-05-11T06:36:53.336779Z

## Published at

2026-05-11T09:28:11.174825Z

## Doi



## First published url

https://doi.org/10.1021/acsomega.5c11989

## Date published

2026-04-07

## Recorded date published

2026-4-7

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Effect of Phosphate Addition to Electrolytes on Corrosion Behavior of Stainless
    Steels in Seawater Electrolysis
  title_type: original
  lang: en

## Description

- description: 近年では新たなエネルギー源として水素が注目されており，水素製造技術として海水電解システムの構築が期待されている．しかし，海水に含まれる塩化物イオンは金属材料の腐食を促進するため，腐食によるシステム劣化が大きな課題である．本研究では，海水を模擬した電解液にリン酸塩を添加し，SUS430，SUS304，およびSUS316の耐食性に及ぼす影響を調べた．電気化学試験によって，リン酸塩添加はこれらのステンレス鋼の耐孔食性を向上させることが分かった．一方，過剰なリン酸塩の添加は不働態皮膜の溶解を引き起こすことが示唆された．XPS測定から，リンが全ての鋼種の不動態被膜に取り込まれ，これが耐孔食性向上に寄与することが示唆された．また，電解液中のリン酸のpH緩衝作用により，孔食の成長が抑制されることも確認された．これらの知見は，海水電解装置の材料寿命向上に向けたリン酸添加の有効性を示すものである．
  description_type: abstract
  lang: und

## Creator

- name: Tomoya Hashimoto
  role: author
  orcid: https://orcid.org/0000-0001-6496-8262
- name: Mariko Kadowaki
  role: author
  orcid: https://orcid.org/0000-0002-8988-3545
- name: Yoshiharu Murase
  role: author
  orcid: https://orcid.org/0000-0001-7390-851X
- name: Masaya Shimabukuro
  role: author
  orcid: https://orcid.org/0000-0002-0364-8721
- name: Kazuhiro Takanabe
  role: author
  orcid: https://orcid.org/0000-0001-5374-9451
- name: Masakazu Kawashita
  role: author
  orcid: https://orcid.org/0000-0002-4329-9001
- name: Hideki Katayama
  role: author
  orcid: https://orcid.org/0000-0001-7947-4687
- name: Yusuke Tsutsumi
  role: author
  orcid: https://orcid.org/0000-0002-9483-1256

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Stainless steel
  schema: not_defined
- subject: Seawater electrolysis
  schema: not_defined
- subject: Corrosion
  schema: not_defined
- subject: Phosphate
  schema: not_defined
- subject: Passive film
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Omega
  issn: '24701343'
  volume: '11'
  issue: '13'
  start_page: 20500
  end_page: 20508

## Conference



## Related item



## Funding

- identifier: JPMJGX23H2
  funder_name: 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: f1236981-e8df-4841-ac53-b0e8ee9ef510
  filename: Hashimoto-ACS Omega-Effect of Phosphate Additi.pdf
  content_type: application/pdf
  size: 6507430
  md5: d004ca7763f9a6d3f5f4efb1da29a4f1

## Thumbnail

fileset_id: f1236981-e8df-4841-ac53-b0e8ee9ef510
filename: Hashimoto-ACS Omega-Effect of Phosphate Additi.pdf