Results 21 to 30 of about 1,095 (184)

Critical analysis for evaluating maximum power point tracking strategy in photovoltaics and fuel cells using key performance metrics

open access: yesEnergy Reports, 2023
This study performs detailed analyses to investigate and justify the utilization of maximum power point tracking (MPPT) algorithm in photovoltaics (PV) and fuel cells.
Zuhair Alyousef, Oscar D. Crisalle
doaj   +1 more source

PtCo/rGO nano-anode catalyst: enhanced power density with reduced methanol crossover in direct methanol fuel cell

open access: yesMaterials for Renewable and Sustainable Energy, 2018
The higher methanol utilization efficiency in direct methanol fuel cell (DMFC) is one of the key factors that determine the performance of DMFC. Herein, we have synthesized bimetallic PtCo nano-particles (with optimized Pt:Co ratio) decorated reduced ...
Richa Baronia   +5 more
doaj   +1 more source

Structure Design and Implementation of the Passive μ-DMFC

open access: yesMicromachines, 2015
A dual-chamber anode structure is proposed in order to solve two performance problems of the conventional passive micro direct methanol fuel cell (μ-DMFC). One of the problems is the unstable performance during long time discharge.
Xiaowei Liu   +3 more
doaj   +1 more source

Reduced Graphene Oxide/Carbon Paper for the Anode Diffusion Layer of a Micro Direct Methanol Fuel Cell

open access: yesNanomaterials, 2022
The diffusion layer (DL) in the structure of the membrane electrode assembly (MEA) of a micro direct methanol fuel cell (μDMFC) plays an essential role in reactant/product mass transfer and catalyst loading. The material selection and structure design of
Dacheng Zhang   +3 more
doaj   +1 more source

Experimental Investigation of the Gas/Liquid Phase Separation Using a Membrane-Based Micro Contactor

open access: yesChemEngineering, 2018
The gas/liquid phase separation of CO2 from a water-methanol solution at the anode side of a µDirect-Methanol-Fuel-Cell (µDMFC) plays a key role in the overall performance of fuel cells.
Kay Marcel Dyrda   +3 more
doaj   +1 more source

Reinforcement regulates timing variability in thalamus

open access: yeseLife, 2020
Learning reduces variability but variability can facilitate learning. This paradoxical relationship has made it challenging to tease apart sources of variability that degrade performance from those that improve it.
Jing Wang   +4 more
doaj   +1 more source

Numerical Investigations of the Combined Effects of Flow Rate and Methanol Concentration on DMFC Performance

open access: yesEnergies, 2017
A modified 3D numerical model on the energy conversion process in the anode side of a Direct Methanol Fuel Cell (DMFC) system was constructed and validated to published experimental results.
Xuqu Hu   +5 more
doaj   +1 more source

Practical and Reliable Methanol Concentration Sensor for Direct Methanol Fuel Cells

open access: yesElectrochemistry, 2021
An electrochemical methanol concentration sensor with practicality and reliability has been developed to apply for a direct methanol fuel cell (DMFC) system.
Shinsuke ANDOH   +4 more
doaj   +1 more source

Preparation and Characterization of DMFC Electrodes and MEAs

open access: yesECS Transactions, 2009
A stencil method, that utilizes a dried powder made of the catalyst and the Nafion ionomer phase, is used to make catalyst layers and membrane electrode assemblies (MEAs). The influence of different hot-pressing conditions on the DMFC performance and various properties of the MEAs, in particularly on the properties of the anode, are investigated and ...
Xue, X.   +3 more
openaire   +3 more sources

A Study on Cathode Potential of DMFC

open access: yesIOP Conference Series: Earth and Environmental Science, 2022
Abstract Methanol oxidation at the cathode catalyst layer is affected by crossing methanol through the membrane, resulting in a mixed potential. A Methanol crossover results in a mixed potential of 0.2V. Methanol concentrations regulate current density, which affects cell performance. When methanol is recirculated from the methanol tank,
B. Mullai Sudaroli   +2 more
openaire   +1 more source

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