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June 20, 2026ACS Applied Energy Materials

Platinum with Graphene Nanopocket Catalysts for Improved Phosphoric Acid Tolerance for High-Temperature Ion-Pair Polymer-Based Fuel Cells

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Authors

MPMagnolia PakYTYu‐Han TsaiAZAo Zhang

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Overview

Randomized trial evaluates phosphoric acid tolerance in high-temperature fuel cells, indicating promising catalyst durability.

Key Points

  • To investigate the durability of a graphene nanopocket-protected platinum catalyst in phosphoric acid environments for high-temperature fuel cells.
  • Conducted stability tests and catalyst accelerated stress tests (ASTs) at 160 °C under high humidity.
  • Evaluated Pt degradation using electrochemical surface area (ECSA) quantification via CO displacement and stripping.
  • Compared graphene nanopocket-protected platinum on Ketjenblack carbon to commercial platinum on Ketjenblack carbon.
  • Pt@Gnp/KB retained over 50% of initial ECSA after 150 h of AST, while Pt/KB retained only 20% ECSA.
  • Pt@Gnp/KB demonstrated high stability at low cell voltages and in water-rich environments.
  • Reduced phosphoric acid species coverage was observed with Pt@Gnp/KB compared to Pt/KB.

Cite This Study

Pak et al. (2026) studied this question.

synapsesocial.com/papers/6a362e62db0793dc1a536119https://doi.org/10.1021/acsaem.6c01144
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Performance and Stability of Pt-Based Alloy Catalysts for High-Temperature PEM Fuel Cell Application2024
  2. 2Carbon Shell‐Encapsulated PtFe Catalysts in High Temperature Polymer Electrolyte Membrane Fuel Cells: Balancing Molecular Sieving and Diffusion for Enhanced Reactant Access2026 · 1 citations
  3. 3(Digital Presentation) Graphene as Barriers to Prevent Phosphoric Acid Leaching in High-Temperature PEMFCs2024
  4. 4Activity and degradation of Pt–Co and Pt–Ni alloy catalysts for application in high-temperature PEM fuel cells2026
  5. 5Electrostatic Repulsion Activates Durable Pt Catalysts for HT‐PEMFCs2026