Results 51 to 60 of about 3,492 (211)

Two-phase flow equations in porous media for PEMFC (Proton Exchange Membrane Fuel Cells)

Science and Technology for Energy Transition
In Proton Exchange Membrane Fuel Cells (PEMFC) for electrical mobility, the water management and transport are very important. Water vapour is produced, and liquid water can be formed since the gases can become saturated by water vapour production during
Tardy Erwan, Morel Christophe
doaj   +1 more source

Optimization of Tapering Angle of Flow Channels of Pemfuel Cell: A Numerical Study [PDF]

Renewable Energy Research and Applications
Proton Exchange Membrane fuel cells (PEMFCs) are essential for the efficient operation of hydrogen-powered automobiles. To improve their performance, researchers have proposed tapered flow channels as a possible solution. However, determining the optimal
Amarnath Gundalabhagavan, Veeresh Babu Alur, Kshitij Bhosale   +2 more
doaj   +1 more source

Operando Visualization of Cathode Water Management in Proton Exchange Membrane Water Electrolyzers Using Synchrotron X‐Ray Radiography

Advanced Science, EarlyView.
The cathode of proton exchange membrane water electrolyzers remains a poorly understood region despite its importance for hydrogen purity and operational safety. Operando synchrotron X‐ray radiography directly visualizes liquid water behavior and uncovers a transition from continuous to pulsating transport, providing new insight into multiphase ...
Wataru Yoshimune, Tetsuichiro Hayakawa, Yuta Miyase   +2 more
wiley   +1 more source

Refining efficiency in standalone proton exchange membrane fuel cell systems through gross hopper optimization-based maximum power point tracking control

Science and Technology for Energy Transition
This study introduces a novel Maximum Power Point Tracking (MPPT) technique for Proton Exchange Membrane Fuel Cell (PEMFC) systems, leveraging the Gross Hopper Optimization (GHO) algorithm to achieve enhanced performance.
Nethra K., Reddy K. Jyotheeswara, Dash Ritesh, Parida Prasanta Kumar, Swain Sarat Chandra, Dhanamjayulu C., Mahapatro Abinash   +6 more
doaj   +1 more source

Streamlined V3.5+ Electrolyte Production by Leveraging Chemical and Catalytic Reductions

Advanced Energy Materials, EarlyView.
A tuned catalytic process for V3.5+ electrolyte production is shown to streamline the conventional chemical‐to‐catalytic sequence by extending catalysis into the rate‐determining reduction regime. This study shows that initiating catalysis in this regime shortens the overall production time by 67% based on rigorous thermodynamic and kinetic analysis of
Kyunghwa Seok, Minseong Kang, Hee‐Tak Kim   +2 more
wiley   +1 more source

From Top to Bottom: Manufacturing Process‐Context Aware Resolution of Energy Device Electrodes Through a 3D Diffusion Generative Model

Advanced Energy Materials, EarlyView.
The application of a generative diffusion model, enhanced with a training data augmentation pipeline retaining the manufacturing process context of electrode microstructures, leads to improved fidelity of the through‐plane tortuosity factor in the AI generated samples.
Victor Ramirez‐Camacho, Siwar Ben Hadj Ali, Maxence Desnoyers, Francisco Fernandez, Nassima Benammar, Alejandro A. Franco   +5 more
wiley   +1 more source

Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective

Carbon Energy, EarlyView.
ABSTRACT Graphene has garnered significant attention as a promising material with great potential for contributing to sustainable energy initiatives, such as RE100 (100% renewable energy initiative) and CF100 (100% carbon‐free initiative). This review aims to explore the potential of graphene for advancing renewable energy applications by highlighting
Niraj Kumar, Seul‐Yi Lee, Roop L. Mahajan, Soo‐Jin Park   +3 more
wiley   +1 more source

Development and Simulation of a PEM Fuel Cell model for Prediction of Water Content and Power Generation [PDF]

Hydrogen, Fuel Cell & Energy Storage, 2018
The proton exchange membrane (PEMFC) fuel cell represents the energy of the future, in parallel with hydrogen. However, this technology must meet many technical challenges related to performance and durability before being sold on a large scale.
khaled mammar, Farid SAADAOUI, Abdaldjabar HAZZAB   +2 more
doaj   +1 more source

Beyond Activity: The Unified Framework of the Sabatier Principle to Guide Rational Design of Durable and Active Electrocatalysts

Carbon Energy, EarlyView.
In this review, a unified framework of the Sabatier principle is applied to a diverse range of catalytic and electrocatalytic systems for advanced clean energy technologies, with a particular focus on the oxygen reduction reaction (ORR). This approach will guide the design and development of highly active and stable catalysts for fuel cells ...
Wanying Zhang, Quan Zhou, Xuanxuan Bi, Luo Luo, Yunxiang Cheng, Rongyue Wang, Zhongwei Chen   +6 more
wiley   +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