# Water Electrolysis Using a Porous IrO2/Ti/IrO2 Catalyst Electrode and Nafion Membranes at Elevated Temperatures

https://mdr.nims.go.jp/datasets/66c1543d-5866-4917-b6b3-a65fd1c62c0c

## File

- [membranes-11-00330.pdf](https://mdr.nims.go.jp/filesets/66f5e183-cfbd-4f73-9bfe-9747a622a854/download) ([Detail](https://mdr.nims.go.jp/filesets/66f5e183-cfbd-4f73-9bfe-9747a622a854.md))

## Id

66c1543d-5866-4917-b6b3-a65fd1c62c0c

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-03-02T01:57:39.681574Z

## Updated at

2024-01-05T13:12:20.385261Z

## Published at

2023-03-03T02:07:00.948476Z

## Doi



## First published url

https://doi.org/10.3390/membranes11050330

## Date published

2021-04-30

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Water Electrolysis Using a Porous IrO2/Ti/IrO2 Catalyst Electrode and Nafion
    Membranes at Elevated Temperatures
  title_type: original
  lang: en

## Description

- description: Porous IrO2/Ti/IrO2 catalyst electrodes were obtained by coating IrO2
    on three types of porous Ti powder sheets (sample 1, sample 2, and sample 3) using
    different surface treatment methods, and a hydrogen evolution catalyst electrode
    was obtained by coating Pt/C on carbon gas diffusion layers. A Nafion115 membrane
    was used as an electrolyte for the membrane electrode assemblies (MEA). Water
    electrolysis was investigated at cell temperatures up to 150 °C, and the electrical
    characteristics of the three types of porous IrO2/Ti/IrO2 catalyst electrodes
    were investigated. The sheet re-sistance of sample 1 was higher than those of
    samples 2 and 3, although during water electrolysis, a high current density was
    observed due to the nanostructure of the IrO2 catalyst. In addition, the structural
    stabilities of Nafion and Aquivion membranes up to 150 °C were investigated by
    using small angle X-ray scattering (SAXS). The polymer structures of Nafion and
    Aquivion membranes were stable up to 80 °C, whereas the crystalline domains grew
    significantly above 120 °C. In other words, the initial polymer structure does
    not recover after the sample is heated above the glass transition temperature.
  description_type: abstract
  lang: eng

## Creator

- name: Je-Deok Kim
  role: author
  orcid: https://orcid.org/0000-0003-4301-1044
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Akihiro Ohira
  role: author

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: polymer electrolyte
  schema: not_defined
- subject: nafion membrane
  schema: not_defined
- subject: porous IrO2/Ti/IrO2 catalyst electrode
  schema: not_defined
- subject: water electrolysis
  schema: not_defined
- subject: elevated temperature
  schema: not_defined

## Rights

- description: Creative Commons BY Attribution 4.0 International
  identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Membranes
  issn: '20770375'
  volume: '11'
  issue: '5'
  start_page: 330
  end_page: 330

## Conference



## Related item



## Funding



## 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



## Fileset

- id: 66f5e183-cfbd-4f73-9bfe-9747a622a854
  filename: membranes-11-00330.pdf
  content_type: application/pdf
  size: 5210626
  md5: ef299ab15048e258753a3b3af1341697

## Thumbnail

fileset_id: 66f5e183-cfbd-4f73-9bfe-9747a622a854
filename: membranes-11-00330.pdf