TY - JOUR
T1 - Ru-core Ir-shell electrocatalysts deposited on a surface-modified Ti-based porous transport layer for polymer electrolyte membrane water electrolysis
AU - Yasutake, Masahiro
AU - Noda, Zhiyun
AU - Matsuda, Junko
AU - Lyth, Stephen M.
AU - Nishihara, Masamichi
AU - Ito, Kohei
AU - Hayashi, Akari
AU - Sasaki, Kazunari
N1 - Publisher Copyright:
© 2023 The Authors
PY - 2024/1/2
Y1 - 2024/1/2
N2 - Novel Ru-core Ir-shell catalyst-integrated porous transport electrodes (PTEs) for polymer electrolyte membrane water electrolysis (PEMWE) cells are prepared, in which Ru-core Ir-shell catalyst nanostructures are directly deposited onto a porous transport layer (PTL) via arc plasma deposition (APD). The PTL has a nanostructured TiO2 surface prepared via NaOH etching, acting as a catalyst support. The performance and durability of these Ru-core Ir-shell catalysts depend strongly on the ratio of Ir and Ru. The current-voltage (I–V) characteristics of PEMWE cells were improved by applying these core-shell catalysts with a low Ir loading of around 0.1 mg cm−2. The core-shell catalyst-integrated PTEs can operate at current densities of up to 10 A cm−2 without exhibiting limiting current behavior. This unique combination of the core-shell catalyst and the PTE structure enables PEMWE cell operation with low iridium loading and high current density, potentially reducing the cost of green hydrogen.
AB - Novel Ru-core Ir-shell catalyst-integrated porous transport electrodes (PTEs) for polymer electrolyte membrane water electrolysis (PEMWE) cells are prepared, in which Ru-core Ir-shell catalyst nanostructures are directly deposited onto a porous transport layer (PTL) via arc plasma deposition (APD). The PTL has a nanostructured TiO2 surface prepared via NaOH etching, acting as a catalyst support. The performance and durability of these Ru-core Ir-shell catalysts depend strongly on the ratio of Ir and Ru. The current-voltage (I–V) characteristics of PEMWE cells were improved by applying these core-shell catalysts with a low Ir loading of around 0.1 mg cm−2. The core-shell catalyst-integrated PTEs can operate at current densities of up to 10 A cm−2 without exhibiting limiting current behavior. This unique combination of the core-shell catalyst and the PTE structure enables PEMWE cell operation with low iridium loading and high current density, potentially reducing the cost of green hydrogen.
UR - http://www.scopus.com/inward/record.url?scp=85165717993&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85165717993&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2023.07.048
DO - 10.1016/j.ijhydene.2023.07.048
M3 - Article
AN - SCOPUS:85165717993
SN - 0360-3199
VL - 49
SP - 169
EP - 183
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
ER -
