Exploring the degradation of catalyst layer and porous transport layer in proton exchange membrane water electrolyzers

Shahid Zaman, Leila Moradizadeh, Dhinesh Kumar Murugaiah, Mohmmad Khalid, S. Roohan Farooq Lala and Samaneh Shahgaldi

EES Catal., 2026, 4, 11
DOI: 10.1039/D5EY00270B

Structure of iridium oxide catalysts dictates performance differences for proton exchange membrane water electrolyzers

Obeen Kwon, Masao Suzuki Shibata, Rebecca Hamlyn, Juhyun Oh, Jack T. Lang, Cliffton Ray Wang, Shannon W. Boettcher, Carol Korzeniewski, Ethan J. Crumlin, Michael J. Zachman, Yu Morimoto and Iryna V. Zenyuk

J. Mater. Chem. A, 2026, 14, 3342
DOI: 10.1039/D5TA08192K

On the interface electron transport problem of highly active IrOx catalysts

Jeesoo Park, Dong Wook Lee, Jonghyun Hyun, Hojin Lee, Euntaek Oh, Kyunghwa Seok, Gisu Doo and Hee-Tak Kim

Energy Environ. Sci., 2025, 18, 5577
DOI: 10.1039/D4EE05816J

Complementary X-ray and neutron imaging of water electrolysers for green hydrogen production

Sebastian J. Altus, Beverley J. Inkson and Jennifer Hack

J. Mater. Chem. A, 2024, 12, 23364
DOI: 10.1039/D4TA02885F

Limited Surface Oxide Growth as a Prerequisite for Stabilizing Low-Loading Iridium Electrodes for PEM Water Electrolysis

Ahyoun Lim, Kahyun Ham, Thomas Quast, Suji Lee, Marc F. Tesch, Steffen Czioska, Daniela Ramermann, Walid Hetaba, Wolfgang Schuhmann, Jan-Dierk Grunwaldt, Sung Ki Cho, Hee-Young Park, Jong Hyun Jang, Sang Hyun Ahn, Ioannis Spanos and Hyun S. Park

ACS Catal., 2025, 15, 6098
DOI: 10.1021/acscatal.4c07864

Laying the Foundation for Digital Material Design of Porous Transport Electrodes for PEM Water Electrolysis With Multiscale Tomography

Markus Bierling, David McLaughlin, Andreas Hutzler, Mingjian Wu, Darius Hoffmeister, Dennis Chalupczok, Erdmann Spiecker, Thomas Böhm and Simon Thiele

Small, 2026
DOI: 10.1002/smll.202513029

Impact of Cathode Components’ Configuration on the Performance of Forward-Bias Bipolar Membrane CO2-Electrolyzers

Jiyun Kwen, Thomas J. Schmidt and Juan Herranz

ACS Appl. Energy Mater., 2025, 8, 4152
DOI: 10.1021/acsaem.4c02883

Advanced Characterization of Proton Exchange Membrane Water Electrolyzers with Spatially‐Resolved X‐Ray Imaging

Leonardo Almeida De Campos, Paolo Ciocci, Johanna Schröder and Thomas L. Sheppard

ChemCatChem, 2026, 18
DOI: 10.1002/cctc.202500530

Performance enhancement of proton electrolyte membrane (PEM) water electrolyzers through modification of titanium-based porous transport layers (Ti-PTLs): A review

Mohammed Ismael

Journal of Power Sources, 2026, 665, 238965
DOI: 10.1016/j.jpowsour.2025.238965

Versatile Decal‐Transfer Method for Fabricating and Analyzing Microporous Layers in Polymer Electrolyte Membrane Water Electrolysis

Gi Hong Jung, Youg Hwa Yun, Sieon An, Daehee Kim, Mitchell Sepe, Seungwook Choi, Jongsu Seo, MinJoong Kim, Sechan Lee, Hyeonjung Park, Sirivatch Shimpalee, Hansung Kim, Changsoo Lee, Gisu Doo and Hyun‐Seok Cho

Small, 2025, 21
DOI: 10.1002/smll.202500086

NdO‐Intensified Dual‐Site Synergy in IrMnOx for Acidic Oxygen Evolution

Chunyang Zhao, Wei Hu, Chen Cao, Shuyuan Yang, Tao Yang, Jing Du, Ya Yue, Yanqin Li, Li Cheng, Zelong Li and Can Li

Angew Chem Int Ed, 2026, 65
DOI: 10.1002/anie.202520973

Active and durable proton exchange membrane water electrolyzer anode with spatially positioned catalytic components

Yu-Wei Hsu, Hsiang-I Chang and Yung-Tin Pan

Journal of Power Sources, 2025, 656, 238107
DOI: 10.1016/j.jpowsour.2025.238107

Challenges in the selective electrochemical oxidation of methane: Too early to surrender

Adam Vass, Guido Mul, Georgios Katsoukis and Marco Altomare

Current Opinion in Electrochemistry, 2024, 47, 101558
DOI: 10.1016/j.coelec.2024.101558

Low-platinum modified porous transport layers for industrial proton exchange membrane water electrolysis

Yihao Liu, Jinze Wei, Changchun Ke, Shaoxuan Yang, Ben Chen, Xuewen Wang, Guangfu Li and Mu Pan

International Journal of Hydrogen Energy, 2025, 195, 152405
DOI: 10.1016/j.ijhydene.2025.152405

Materials Engineering for High Performance and Durability Proton Exchange Membrane Water Electrolyzers

Pablo A. García-Salaberri, Lonneke van Eijk, William Bangay, Kara J. Ferner, Mee H. Ha, Michael Moore, Ivan Perea, Ahmet Kusoglu, Marc Secanell, Prodip K. Das, Nausir Firas, Svitlana Pylypenko, Melissa Novy, Michael Yandrasits, Suvash C. Saha, Ali Bayat, Shawn Litster and Iryna V. Zenyuk

ACS Appl. Energy Mater., 2025, 8, 13050
DOI: 10.1021/acsaem.5c01989

Strategies for Suppression and Compensation of Signal Loss in Ptychography

Ruoru Li, Zijian Xu, Sheng Chen, Shuhan Wu, Yingling Zhang, Xiangzhi Zhang and Renzhong Tai

Photonics, 2025, 12, 636
DOI: 10.3390/photonics12070636

Efficient proton exchange membrane water electrolysis by activating “inactive” catalysts

Yaping Pan, Xinlong Zhuang, Kejie Lao, Linrui Wen, Guang Deng, Hailong Wang, Hanchun Wang, Hua Bing Tao and Nanfeng Zheng

Chemical Engineering Journal, 2025, 522, 167501
DOI: 10.1016/j.cej.2025.167501

Comparing Membranes for Proton Exchange Membrane Water Electrolysis: Performance, Stability and Hydrogen Crossover

Abdulhai H. Faqeeh, Alex T. Pitman, Zeliha Ertekin, Paula L. Lalaguna and Mark D. Symes

J. Electrochem. Soc., 2025, 172, 114509
DOI: 10.1149/1945-7111/ae1cf4

Triple-Layer Porous Transport Layers with Ultra-High Porosity for Enhanced Oxygen Transport and Catalyst Utilization in Water Electrolysis

Seong Hyun Park, Young Je Park, Seungsoo Jang, Pilyoung Lee, Soobin Yoon, Young-June Park, Chi-Young Jung and Kang Taek Lee

Nano-Micro Lett., 2025, 17
DOI: 10.1007/s40820-025-01831-z

Laser micromachining strategies for high quality perforation of thin titanium foils to produce microporous layers for polymer electrolyte membrane electrolysis

Alexander Wienke, Matthias Springer, Lukas Stein, Patrick Trinke, Boris Bensmann, Peter Jäschke, Richard Hanke-Rauschenbach and Stefan Kaierle

Journal of Laser Applications, 2025, 37
DOI: 10.2351/7.0001935

Application of Laser-Perforated Titanium Foils in Polymer Electrolyte Membrane Water Electrolysis

Arnd Garsuch, Malte Kumkar, Marc Sailer, Matthias F. Ernst, Pawel Garkusha, Jonas Mayer and Max Kahmann

ACS Appl. Energy Mater., 2025, 8, 4948
DOI: 10.1021/acsaem.5c00556

Examining the mass transport resistance of porous transport layers at the rib/channel scale in polymer electrolyte membrane water electrolyzers: Modeling and design

Pablo A. García-Salaberri, Jack Todd Lang, Hung-Ming Chang, Nausir Firas, Hasan Shazhad and Iryna V. Zenyuk

International Journal of Heat and Mass Transfer, 2025, 244, 126889
DOI: 10.1016/j.ijheatmasstransfer.2025.126889

Impact of Porous Transport Layer Morphology on the Performance of Proton Exchange Membrane Water Electrolyzers with Ultra-Low Iridium Loadings

Jacob A. Wrubel, Makenzie Parimuha, Sarah Blair, Haoran Yu, Jack Todd Lang, Abigail J. Schmeiser, James L. Young, Elliot Padgett, Iryna V. Zenyuk and Guido Bender

ACS Appl. Mater. Interfaces, 2026
DOI: 10.1021/acsami.6c01544

Anode catalyst layer optimization in polymer electrolyte membrane water electrolysis: Modeling catalyst layer properties and interface effects

Tien-Ching Ma, Andreas Hutzler, Richard Hanke-Rauschenbach and Simon Thiele

Electrochemistry Communications, 2025, 178, 107965
DOI: 10.1016/j.elecom.2025.107965

Structural optimization of TiO2 supported IrO2 catalyst for proton exchange membrane water electrolysis

Darius Hoffmeister, Selina Finger, Ramesh Pokhrel, Andreas Körner, Birk Fritsch, Simon Thiele, Andreas Hutzler and Chuyen van Pham

Chemical Engineering Journal, 2025, 517, 164281
DOI: 10.1016/j.cej.2025.164281

NdO‐Intensified Dual‐Site Synergy in IrMnOx for Acidic Oxygen Evolution

Chunyang Zhao, Wei Hu, Chen Cao, Shuyuan Yang, Tao Yang, Jing Du, Ya Yue, Yanqin Li, Li Cheng, Zelong Li and Can Li

Angewandte Chemie, 2026, 138
DOI: 10.1002/ange.202520973

Guidance for targeted degradation analysis of OER kinetics of low-loading iridium-based catalysts in PEM water electrolysis cells

Mirjam Rogler, Richard Wagner, Simon Thiele and Michel Suermann

Electrochimica Acta, 2025, 510, 145360
DOI: 10.1016/j.electacta.2024.145360

Interface between anode porous transport layer and catalyst layer: A key to efficient, stable and competitive proton exchange membrane water electrolysis

Tereza Bautkinova, Martin Prokop, Tomas Bystron and Karel Bouzek

Current Opinion in Electrochemistry, 2025, 49, 101624
DOI: 10.1016/j.coelec.2024.101624

Recent advances in catalysts and interface engineering for high-performance proton exchange membrane water electrolyzers

Muhammad Arshad, Akbar Bashir, Haseebul Hassan, Shuiping Luo, Muhammad Bilal, Muhammad Wasim, Wen Chen, Lei Xie, Jing-Li Luo and Xian-Zhu Fu

Materials Science and Engineering: R: Reports, 2026, 167, 101124
DOI: 10.1016/j.mser.2025.101124

Influence of porous transport layer and microporous layer morphologies on oxygen content and cell performance for proton exchange membrane water electrolyzers with low catalyst loadings

Jack Todd Lang, Serafina Fortiner, Ryan Ouimet, Hung-Ming Joseph Chang, Florian M. Chabot, Devashish Kulkarni, Jennifer R. Glenn, Christopher B. Capuano, Bryan Erb, Andrew Smeltz, Dilworth Y. Parkinson and Iryna V. Zenyuk

Electrochimica Acta, 2026, 556, 148467
DOI: 10.1016/j.electacta.2026.148467

Microporous layers for next-generation proton exchange membrane water electrolyzers

Fazele Karimian Bahnamiri and ChungHyuk Lee

Chem Catalysis, 2024, 4, 101063
DOI: 10.1016/j.checat.2024.101063

The critical role of the anode porous transport layer/catalyst layer interface of polymer electrolyte membrane water electrolyzers: A parametric analysis

Pablo A. García-Salaberri, Hung-Ming Chang, Jack Todd Lang, Nausir Firas, Hasan Shazhad, Yu Morimoto and Iryna V. Zenyuk

Chemical Engineering Journal, 2025, 509, 160722
DOI: 10.1016/j.cej.2025.160722

High-performance ionomer-free gas diffusion cathodes with low Pt loading for proton exchange membrane water electrolysis

Mingliang Chen, Peter M. Piechulla, Alexandros Mantzanas, Mena-Alexander Kräenbring, Fatih Özcan, Doris Segets and J. Ruud van Ommen

Commun Mater, 2026, 7
DOI: 10.1038/s43246-026-01076-2

Composite Anode for PEM Water Electrolyzers: Lowering Iridium Loadings and Reducing Material Costs with a Conductive Additive

Kara J. Ferner and Shawn Litster

ACS Appl. Energy Mater., 2024, 7, 8124
DOI: 10.1021/acsaem.4c01866

Large-scale ultra-thin titanium porous transport layers fabricated by powder rolling for polymer electrolyte membrane water electrolysis

Baoguang Zhang, Lei Shen, Xingyu Duan, Xiaoqing Liu and Jian Wang

International Journal of Hydrogen Energy, 2025, 116, 64
DOI: 10.1016/j.ijhydene.2025.02.459

Porosity‐Zoned Porous‐Transport Layer for Proton‐Exchange Membrane Water Electrolysis by High‐Velocity Flame Spraying

Kirsten Bobzin, Selina Finger, Lidong Zhao, Hendrik Heinemann, Elisa Olesch, Katja Radermacher, Sabrina Pechmann, Dennis Possart, Silke H. Christiansen, Darius Hoffmeister, Birk Fritsch, Simon Thiele and Andreas Hutzler

Adv Eng Mater, 2025, 27
DOI: 10.1002/adem.202402462

Influence of nickel foam towards synthesis of Ni Co phosphide catalyst: Nano-needle assembly forming micro-cabbage-like versus micro-nest-like structure

Anis Natasha Shafawi, Lutfi Kurnianditia Putri and Abdul Rahman Mohamed

Materials Letters, 2026, 405, 139679
DOI: 10.1016/j.matlet.2025.139679