Results 71 to 80 of about 289,334 (350)

Fluorine-Containing Siloxane Based Polymer Electrolyte Membranes [PDF]

Chemistry & Chemical Technology, 2019
Проведено реакції гідросилілування 2,4,6,8-тетрагідро-2,4,6,8-тетраметилциклотетра-силоксану (D4 H) з 2,2,3,3-тетрафлуорпропіл акрилатом та вінілтриетоксисиланом у присутності платинових каталізаторів (платино хлориста воднева кислота, каталізатор Карстеда і каталізатора Pt/C (10%) за температури 323 К) та одержано відповідний адукт (D4 R,R‘).
Mukbaniani, Omari, Aneli, Jimsher, Plonska-Brzezinska, Marta, Tatrishvili, Tamar, Markarashvili, Eliza   +4 more
openaire   +3 more sources

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

Advanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini, Daniël Grosfeld, Bruno Branco, Guus J. W. Aalbers, Lana M. Kessels, Willemijn H. M. Remmerswaal, Nicolas Daub, Kunal Datta, Martijn M. Wienk, René A. J. Janssen   +9 more
wiley   +1 more source

Properties of Polymer Electrolyte Membranes Prepared by Blending Sulfonated Polystyrene with Lignosulfonate

Journal of Mathematical and Fundamental Sciences, 2014
A polymer electrolyte membrane widely used in PEMFCs and DMFCs is a perfluorosulfonated membrane (the Nafion membrane). This perfluorosulfonated membrane material exhibits good chemical stability and proton conductivity, but it is very expensive and ...
Siang Tandi Gonggo, Cynthia L. Radiman, Bunbun Bundjali, I Made Arcana   +3 more
doaj  

Physiochemical Characteristics of Solid Electrolyte Membranes for High-Temperature PEM Fuel Cell

International Journal of Electrochemical Science, 2019
Proton exchange membrane fuel cell (PEMFC) is one of the most promising clean energy conversion devices, whereas polybenzimidazole (PBI) polymer consider the potential electrolyte membrane for high temperature.
M.A. Haque, A.B. Sulong, E.H. Majlan, K.S. Loh, T. Husaini, R. Rosli   +5 more
doaj   +1 more source

Zn salts incorporated polyurethane/polyacrylonitrile electrospinning fiber membrane for high porosity polymer electrolyte in Zn ion battery

Scientific Reports, 2023
So far, a large variety of polymer molecule architectures have been explored in the electrolyte field. Polymer electrolytes have gathered research efforts as an interesting alternative to conventional liquid electrolytes due to their advantages of low ...
Chutiwat Likitaporn, Manunya Okhawilai, Nangan Senthilkumar, Tawan Wongsalam, Nattapon Tanalue, Pornnapa Kasemsiri, Jiaqian Qin, Hiroshi Uyama   +7 more
doaj   +1 more source

Impact of iron and hydrogen peroxide on membrane degradation for polymer electrolyte membrane water electrolysis: Computational and experimental investigation on fluoride emission

Journal of Power Sources, 2019
Polymer electrolyte membrane (PEM) degradation in electrolysis mode is simulated through a Fenton model that includes all major involved electrochemical reactions.
S. Frensch, G. Serre, F. Fouda-Onana, H. Jensen, M. Christensen, Samuel Simon Araya, S. Kær   +6 more
semanticscholar   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

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, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

Subfreezing operation of polymer electrolyte fuel cells: Ice formation and cell performance loss [PDF]

, 2012
In this work, we investigate the cold-start operation of polymer electrolyte fuel cells (PEFCs) through high-resolution neutron radiography, experimental testing, theoretical evaluation, and comparison with model prediction.
Borup, RL, Mishler, J, Mukherjee, PP, Mukundan, R, Wang, Y   +4 more
core   +2 more sources

Physical modeling of chemical membrane degradation in polymer electrolyte membrane fuel cells: Influence of pressure, relative humidity and cell voltage

Journal of Power Sources, 2019
Chemical membrane degradation causes deterioration of critical membrane properties such as gas separation which finally causes failure of polymer electrolyte membrane fuel cells (PEMFCs).
G. Futter, A. Latz, T. Jahnke
semanticscholar   +1 more source

Pore Size Effects of Mesoporous N‐Doped Carbon Nanospheres as Advanced Support Material on the Activity of Molybdenum Sulfide Catalysts for the Hydrogen Evolution Reaction

Advanced Functional Materials, EarlyView.
By tuning the pore size of mesoporous N‐doped carbon (MPNC) nanospheres as support material for molybdenum sulfide, the electrochemical activity of the composite material for the hydrogen evolution reaction can be optimized. An ideal MPNC pore size of 60 nm allows a high number of molybdenum sulfide active sites while maintaining efficient proton and ...
Niklas Ortlieb, Christian Völker, Lars Guggolz, Anna Fischer   +3 more
wiley   +1 more source