Journal of Colloid and Interface Science 2022, 621, 275-284. Well entrapped platinum-iron nanoparticles on three-dimensional nitrogen-doped ordered mesoporous carbon as highly efficient and durable catalyst for oxygen reduction and zinc-air battery. Rui-Min Sun, Run-Ze Wu, Xin-Sheng Li, Jiu-Ju Feng, Lu Zhang, Ai-Jun Wang.ACS Applied Materials & Interfaces 2018, 10 Rheological Investigation on the Microstructure of Fuel Cell Catalyst Inks. Sunilkumar Khandavalli, Jae Hyung Park, Nancy N.ACS Applied Materials & Interfaces 2019, 11 Top-Down Synthesis of Nanostructured Platinum–Lanthanide Alloy Oxygen Reduction Reaction Catalysts: PtxPr/C as an Example. Macak, Alexander Holleitner, Aliaksandr S.

Maillard, Laetitia Dubau, Jan Michalička, Jan M.

Johannes Fichtner, Batyr Garlyyev, Sebastian Watzele, Hany A.

Ionomer Cross-Linking Immobilization of Catalyst Nanoparticles for High Performance Alkaline Membrane Fuel Cells.

Xian Liang, Muhammad Aamir Shehzad, Yuan Zhu, Lianqin Wang, Xiaolin Ge, Jianjun Zhang, Zhengjin Yang, Liang Wu, John Robert Varcoe, Tongwen Xu.

Elucidating the Dynamic Nature of Fuel Cell Electrodes as a Function of Conditioning: An ex Situ Material Characterization and in Situ Electrochemical Diagnostic Study. Myers, Nancy Kariuki, Jaehyung Park, Guanxiong Wang, Andrew Baker, Natalia Macauley, Rangachary Mukundan, Karren L. Tailoring the Oxygen Reduction Activity of Pt Nanoparticles through Surface Defects: A Simple Top-Down Approach. Macak, Wu Wang, Di Wang, Thomas Gigl, Christoph Hugenschmidt, Aliaksandr S. Maillard, Laetitia Dubau, Raphaël Chattot, Jan Michalička, Jan M.

Johannes Fichtner, Sebastian Watzele, Batyr Garlyyev, Regina M.

Toward Optimizing Electrospun Nanofiber Fuel Cell Catalyst Layers: Microstructure and Pt Accessibility.

Sadia Kabir, Tim Van Cleve, Sunilkumar Khandavalli, Samantha Medina, Svitlana Pylypenko, Scott Mauger, Michael Ulsh, K.C.

ACS Applied Materials & Interfaces 2021, 13 Anchored Pt-Co Nanoparticles on Honeycombed Graphene as Highly Durable Catalysts for the Oxygen Reduction Reaction.

Rui Lin, Tong Zheng, Liang Chen, Hong Wang, Xin Cai, Ying Sun, Zhixian Hao.

Armoring the Pt/C Catalyst with Fine Atomic-Scale Tungsten Species to Increase Tolerance against Thermal and Fuel Cell Stresses.

Liang-Chen Lin, Yun-Sheng Cheng, Chun-Han Kuo, Ying-Cheng Chen, Wei-Chieh Liao, Lu-Yu Chueh, Syu-Cheng Ye, Han-Yi Chen, Hsin-Yi Tiffany Chen, Yung-Tin Pan.

The Journal of Physical Chemistry C 2022, 126 Oxygen and Proton Transport in Flooded Graphene Pores with N-Dopants and Defects. Does an Ionomer Penetrate a Carbon Mesopore? Free-Energy Analysis Using Molecular Dynamics Simulations. ACS Applied Materials & Interfaces 2022, 14

Impact of Platinum Primary Particle Loading on Fuel Cell Performance: Insights from Catalyst/Ionomer Ink Interactions. Berlinger, Anamika Chowdhury, Tim Van Cleve, Aaron He, Nicholas Dagan, Kenneth C. This article is cited by 54 publications. Furthermore, a strong correlation between Pt particle/agglomerate size and measured ECSA is established and is proposed as a more useful metric than average crystallite size in predicting degradation behavior across different catalyst systems. However, a large loss of the electrochemically active surface area (ECSA) is still observed and is attributed to accelerated Pt dissolution and nanoparticle coalescence. Tomographic reconstructions of Pt/HSAC show much better initial Pt dispersions, less agglomeration, and less coarsening during ASTs in the cathode. Electron tomography results show Pt nanoparticle agglomeration occurs predominantly at junctions and edges of aggregated graphitized carbon particles, leading to poor Pt dispersion in the as-prepared catalysts and increased coalescence during ASTs. This is accomplished both before and after catalyst-cycling accelerated stress tests (ASTs) through observations of the cathode catalyst layer of membrane electrode assemblies. We report a direct and quantitative 3D study of Pt dispersions on carbon supports (high surface area carbon (HSAC), Vulcan XC-72, and graphitized carbon) with varied surface areas, graphitic character, and Pt loadings ranging from 5 to 40 wt %. Understanding the mechanisms associated with Pt/C electrocatalyst degradation in proton exchange membrane fuel cell (PEMFC) cathodes is critical for the future development of higher-performing materials however, there is a lack of information regarding Pt coarsening under PEMFC operating conditions within the cathode catalyst layer.

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