Results 121 to 130 of about 154,736 (278)

Electrochemical Device Comprising Composite Bipolar Plate and Method of Using the Same [PDF]

An electrochemical device and methods of using the same. In one embodiment, the electrochemical device may be used as a fuel cell and/or as an electrolyzer and includes a membrane electrode assembly (MEA), an anodic gas diffusion medium in contact with ...
Braff, William A., Mittelsteadt, Cortney K.   +1 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Reduced gas diffusion resistance via modification of negatrode morphology for steam/CO2 co-electrolysis SOEC

Electrochemistry Communications
Solid oxide electrolysis cells (SOECs) exhibit remarkable efficiency in the production of syngas, a mixture of hydrogen and carbon monoxide, owing to their ability to electrolyze steam and carbon dioxide simultaneously.
Hirofumi Sumi, Mizuki Momai, Yohei Tanaka, Toshiaki Matsui   +3 more
doaj   +1 more source

Impurity intrusion in radio-frequency micro-plasma jets operated in ambient air

, 2011
Space and time resolved concentrations of helium metastable atoms in an atmospheric pressure radio-frequency micro-plasma jet were measured using tunable diode laser absorption spectroscopy.
A Kanitz, B Niermann, Becker K H, Cardoso R P, Flohr R, J Winter, Katsch H M, Knake N, M Böke, Schaper L   +9 more
core   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Mechanochemistry‐Assisted Solvent‐Free Supramolecular Engineering for Atomic‐Layered Carbon Nitride Nanosheets with Enhanced Photocatalytic Hydrogen Evolution

Advanced Functional Materials, EarlyView.
A solvent‐free mechanochemistry‐enabled supramolecular engineering strategy is developed to directly synthesize covalent‐interconnected two‐dimensional atomic‐layered carbon nitride nanosheets photocatalyst, bypassing conventional top‐down exfoliation requirements.
Fanglei Yao, Jingwen Sun, Huiru Duan, Yongsheng Fu, Jin Wang, Liming Dai, Jingsan Xu, Junwu Zhu   +7 more
wiley   +1 more source

Development of a thermal ionizer as ion catcher

, 2008
An effective ion catcher is an important part of a radioactive beam facility that is based on in-flight production. The catcher stops fast radioactive products and emits them as singly charged slow ions.
A. Rogachevskiy, A.J. Mol, Bayat, Berg, C.J.G. Onderwater, Clifford, Crank, Datz, Dendooven, E. Traykov, Fick, Fujioka, H.W. Wilschut, Huyse, Jungmann, Jungmann, K. Jungmann, Kirchner, Kirchner, Kirchner, L. Huisman, L. Willmann, Langmuir, Love, M. da Silva e Silva, M. Sohani, McCracken, O. Versolato, O.C. Dermois, Rossbach, S. De, Traykov, U. Dammalapati, W. Kruithof, Willmann, Wilschut, Ziegler, Ärje   +37 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Effects of the operational conditions on the membrane and electrode properties of a polymer electrolyte fuel cell

Journal of the Brazilian Chemical Society, 2002
The effects of the operational conditions on the membrane and electrode properties on a polymer electrolyte fuel cell (PEFC) were investigated as a function of the cell and the gas humidifiers temperatures, the thickness of the membrane, the impregnation
Passos Raimundo R., Ticianelli Edson A.
doaj  

Universal In Situ Isotope Exchange Raman Spectroscopy (IERS) Methodology for Measuring Oxygen Surface Exchange Dynamics Using a Probe Layer

Advanced Functional Materials, EarlyView.
A bespoke multilayer thin film configuration has been designed, which overcomes the material dependency of conventional isotope exchange Raman spectroscopy (IERS). This universal IERS methodology is efficient, non‐destructive and provides additional structural information and time resolution, which can be further extended to various isotopic elements ...
Zonghao Shen, Francesco Chiabrera, Alexander Stangl, Laetitia Rapenne, Federico Baiutti, Carmen Jiménez, Albert Tarancón, Mónica Burriel   +7 more
wiley   +1 more source