Results 81 to 90 of about 9,395 (252)

Achievement of Transition Metal Chalcogenides/Oxides in Hydrogen Production by Seawater Electrolysis

EcoEnergy, EarlyView.
Transition metal chalcogenides (TMCs)/oxides have shown great application potential in seawater splitting for hydrogen generation due to their adjustable electronic properties, abundant active sites, and excellent catalytic performance. ABSTRACT Under the impetus of global “dual carbon” goals, green hydrogen has become a key component of the future ...
Xiaohui Du, Xinyu Li, Jianna Li, Tao Sun
wiley   +1 more source

Modelagem da eletro-oxidação de etanol sobre catalisador PtSn/C aplicada a células a combustível de etanol direto do tipo membrana trocadora de prótons (DEPEMFC) [PDF]

, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2014Neste trabalho desenvolve-se a modelagem da reação eletroquímica de oxidação de etanol em células a ...
Piña, Renzo Fabricio Figueroa
core  

Next Generation Bipolar Plates for Automotive PEM Fuel Cells [PDF]

, 2010
The results of a successful U.S. Department of Energy (DoE) funded two-year $2.9 MM program lead by GrafTech International Inc. (GrafTech) are reported and summarized.
Zawodzinski, Tom, Roger Tietze, Patrick Pietrasz, Tietze, Roger, Orest Adrianowycz, Pietrasz, Patrick, David J Stuart, Tom Zawodzinski, Norley, Julian, Ryan Wayne, Yen-Loan H Nguyen, Stuart, David J., Adrianowycz, Orest, David Flaherty, Warren Williams, Wayne, Ryan, Julian Norley, Flaherty, David, Williams, Warren, Nguyen, Yen-Loan H.   +19 more
core   +1 more source

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

ENERGY &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, Sufeng Zhang, Yali Liu, Jinrui Li, Ning Wei, Chaoyang Li, Tanyanyu Wang   +6 more
wiley   +1 more source

Optimization of the Perturbation Amplitude for Impedance Measurements in a Commercial PEM Fuel Cell Using Total Harmonic Distortion [PDF]

, 2016
One of the most important measurement parameters in electrochemical impedance spectroscopy (EIS) is the perturbation amplitude. The optimum perturbation amplitude value corresponds with a balance between the signal-to-noise ratio improvement and the ...
Ortega Navarro, Emma María, E. M. Ortega, Giner-Sanz, Juan José, Pérez-Herranz, Valentín, J. J. Giner‐Sanz, V. Pérez‐Herranz   +5 more
core   +1 more source

Developing a Suitable Anion Exchange Layer Structure for Pure–Water Fed Bipolar Membrane CO2 Electrolysis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A porous anion exchange layer (AEL) is implemented in a forward‐biased bipolar membrane CO2 electrolyzer to suppress carbonate crossover, support CO2 regeneration and maintain cathode alkalinity. Two fabrication strategies are compared—deposition on a silver gas diffusion electrode (GDE) or on the CEM—showing that a porous AEL‐coated GDE provides the ...
Henning Lorenz, Nico Roubicek, Simon Thiele, Chuyen van Pham   +3 more
wiley   +1 more source

Advances in Design Strategy and Mechanism Insights for Alkaline Hydrogen Evolution Reaction: Multilevel Site Engineering and Structure–Activity Relationship

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review is about material design based on engineering multilevel sites from theoretical calculation and synthetic routes to mechanism, structure–activity relationship, challenges and perspectives for boosting hydrogen production in alkaline electrolyte. Electrolytic water splitting is a clean, carbon‐free method for producing green hydrogen and has
Ke Zhang, Hongying Luo, Yudong Du, Kehao Yu, Huayu Wu, Shimin Chai, Yanyan Liu, Yongfeng Wang, Jianchun Jiang, Baojun Li   +9 more
wiley   +1 more source

Current Density Performances in Poly Ether Ether Keton Membrane for Direct Methanol Fuel Cells [PDF]

, 2012
The objective of this study focuses on the characterization of poly ether ether ketone (PEEK) membranes for direct methanol fuel cells (DMFC) application. The PEEK membrane was modified with sulfonation in NMP solvent.
E. L. , Dewi, A. , Dhuhita, T. D. , Kusworo, M.N.A. , Mohd Norddin, D. K. , Arti, A.F. , Ismail   +5 more
core  

PEM fuel cells for the power supply of electronic appliances

, 2004
At the Fraunhofer Institute for Solar Energy Systems ISE we develop customized fuel cell systems based on hydrogen or methanol as fuel. This article describes some scientific approaches for the basic understanding of fuel cells we are taking in terms of ...
Hesselmann, Jan, Zobel, Marco, Hakenjos, Alexander, Schumacher, Jürgen, Pocza, David, Burger, Bruno, Münter, Harald, Hebling, Christopher, Zedda, Mario, Wittstatt, Ursula   +9 more
core   +1 more source

Experimental Studies of Effect of Land Width in PEM Fuel Cells with Serpentine Flow Field and Carbon Cloth

Energies, 2019
Flow field plays an important role in the performance of proton exchange membrane (PEM) fuel cells, such as transporting reactants and removing water products.
Xuyang Zhang, Andrew Higier, Xu Zhang, Hongtan Liu   +3 more
doaj   +1 more source