Results 91 to 100 of about 28,179 (226)

Beyond hydrogen: Process design of a biogas steam reformer for Fischer–Tropsch synthesis

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
The effect of pressure and steam to carbon ratio on carbon conversion. Abstract We present an analysis of a pilot‐scale multi‐tubular biogas steam reforming reactor, part of a sustainable aviation fuel (SAF) development project in Brazil. The novelty of this work is the application of a new, validated power law kinetic model, specifically developed for
Rafael Belo Duarte   +3 more
wiley   +1 more source

An Energy Management System of a Fuel Cell/Battery Hybrid Boat [PDF]

open access: yes, 2014
All-electric ships are now a standard offering for energy/propulsion systems in boats. In this context, integrating fuel cells (FCs) as power sources in hybrid energy systems can be an interesting solution because of their high efficiency and low ...
CHARPENTIER, Jean-Frederic   +2 more
core   +6 more sources

Ordered Nanostructural Engineering of Cathode Catalyst Layer With High Mass Transport Efficiency for High‐Performance Ultra‐Low Pt Loading Proton Exchange Membrane Fuel Cells

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An ordered cathode catalyst layer with efficient mass transport capability was developed based on the ALD of Pt onto VACNTs for high‐performance ultra‐low Pt loading PEMFC. The order‐structured cathode catalyst layer (CCL) has been considered the most promising solution to construct low‐cost proton exchange membrane fuel cells (PEMFCs) with an ultra ...
Jia Liu   +8 more
wiley   +1 more source

Nitrogen front evolution in purged polymer electrolyte membrane fuel cell with dead-ended anode [PDF]

open access: yes, 2010
In this paper, we model and experimentally verify the evolution of liquid water and nitrogen fronts along the length of the anode channel in a proton exchange membrane fuel cell operating with a dead-ended anode that is fed by dry hydrogen.
Bohac, Stanislav V.   +4 more
core   +2 more sources

Dual‐Functional Sulfonated Nanocellulose for Proton Exchange Membranes With High Proton Conductivity at Low Humidity

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A scalable dual‐functional strategy yields simultaneously sulfonated and nanosized cellulose for proton exchange membranes with continuous hydrogen‐bond networks. These sustainable membranes exhibit low‐humidity proton conductivity twofold higher than Nafion 212, providing a robust solution for next‐generation fuel cells.
Nan Li   +6 more
wiley   +1 more source

Numerical simulation of two-phase cross flow in the gas diffusion layer microstructure of proton exchange membrane fuel cells [PDF]

open access: yes, 2017
The cross flow in the under-land gas diffusion layer (GDL) between 2 adjacent channels plays an important role on water transport in proton exchange membrane fuel cell. A 3-dimensional (3D) two-phase model that is based on volume of fluid is developed to
Du, Q, Jiao, K, Niu, Z, Wang, Y, Yin, Y
core   +1 more source

Hydrogen Fuel Cell Technologies for Decarbonization: Opportunities, Challenges, and Strategic Pathways—A Comprehensive Review

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Hydrogen (H2) fuel cells are increasingly recognized as a cornerstone technology in the global transition toward clean energy due to their high efficiency and zero‐emission characteristics. This review synthesizes recent progress, challenges, and strategic pathways for the deployment of H2 fuel cells across the transportation, power generation,
Yash Sachin Gupta   +5 more
wiley   +1 more source

Ordered modulation of electronic structure for efficient alkaline hydrogen oxidation

open access: yesFlexMat, EarlyView.
We developed imc‐RuGa/hp‐hCN catalyst using in situ elastic spatial confinement method. This catalyst exhibits superior performance for the alkaline HOR, maintaining stable operation for 600 h at a 0.05 V versus RHE working voltage in 0.1 M KOH. It achieved 13 times greater mass activity than commercial PtRu/C.
Ziang Shang   +4 more
wiley   +1 more source

Effect of Graphite Type on the Electrical, Thermal, Mechanical, and Gas‐Barrier Properties of Ultrathin Composite Bipolar Plates

open access: yesPolymer Composites, EarlyView.
Schematic of the experimental workflow for evaluating the effect of different graphite fillers on the electrical, thermal, mechanical, and gas‐barrier properties of ultrathin composite foils produced via the Powder‐to‐Roll process. ABSTRACT This study systematically investigates the influence of graphite type, particle shape, and particle size on the ...
Laura Huwald   +5 more
wiley   +1 more source

Numerical Study of Pressure Drop Mechanism and Cross Flow Behavior in the Gas Channel and Porous Medium of a Polymer Electrolyte Membrane Fuel Cell

open access: yesJournal of Thermal Science and Technology, 2013
The three-dimensional, transient, isothermal, gas-flow behavior in the serpentine channel and porous gas-diffusion layer (GDL) of a polymer electrolyte membrane fuel cell was investigated numerically.
K. M. SALAHUDDIN   +3 more
doaj   +1 more source

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