Results 51 to 60 of about 28,179 (226)
Oxygen Hydration Mechanism for the Oxygen Reduction Reaction at Pt and Pd Fuel Cell Catalysts [PDF]
, 2011 We report the reaction pathways and barriers for the oxygen reduction reaction (ORR) on platinum, both for gas phase and in solution, based on quantum mechanics calculations (PBE-DFT) on semi-infinite slabs. We find a new mechanism in solution: O_2 → 2O_(
Goddard, William A., III +4 more
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Advanced Functional Materials, EarlyView.A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou +8 more
wiley +1 more source
A Novel Tubular Shape Design for Polymer Electrolyte Membrane Fuel Cell (PEMFC) to Enhance the Performance [PDF]
Iranian Journal of Chemistry & Chemical EngineeringThe Polymer Exchange Membrane Fuel Cell set is an efficient system that can transform hydrogen energy into an electrical one. Due to higher power density, the tubular shape is the preferred architecture among the different architectures over the ...
Sepehr Senfi +3 more
doaj +1 more source
A review of the main mechanisms of catalyst layer degradation in polymer electrolyte membrane fuel cell (PEMFC) and different performance recovery methods [PDF]
Hydrogen, Fuel Cell & Energy Storage, 2019 This paper reviewed over 100 articles on the subject of the mechanism of catalyst layer (CL) degradation and the effect of various contaminations in the polymer electrolyte membrane fuel cell (PEMFC).
M Khorshidian, Majid Sedighi
doaj +1 more source
Advanced Functional Materials, EarlyView.In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken +6 more
wiley +1 more source
Open Physics, 2018 PEMFC needs to be maintained at an appropriate temperature and humidity in a rapidly changing environment for automobile applications. In this study, a pseudo-multi-dimensional dynamic model for predicting the heat and mass transfer performance of a ...
Yun Sungho +6 more
doaj +1 more source
Fabrication of PEM Fuel Cell Bipolar Plates by Indirect SLS [PDF]
, 2004 The paper presents a new manufacturing technique involving Selective Laser Sintering (SLS) for proton exchange membrane fuel cell (PEMFC) bipolar plate fabrication.
Bourell, David L. +2 more
core +1 more source
Advanced Functional Materials, EarlyView.Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller +6 more
wiley +1 more source
Three-dimensional CFD analysis of PEMFC with different membrane thicknesses
Renewable Energy and Sustainable Development, 2022 PEM fuel cell (PEMFC) is a potential candidate for future source of power used in different applications such as transportations, stationary and portable power.
Mahmut Kaplan
doaj +1 more source
Biomimetic flow fields for proton exchange membrane fuel cells: A review of design trends [PDF]
, 2020 Bipolar Plate design is one of the most active research fields in Polymer Electrolyte Membrane Fuel Cells (PEMFCs) development. Bipolar Plates are key components for ensuring an appropriate water management within the cell, preventing flooding and ...
Arredondo, C. H. +3 more
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