Results 71 to 80 of about 107,629 (241)

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Facile construction of polyoxometalate-modified polyaryletherketone-based hybrid membranes with enhanced proton conductivity

Polyoxometalates
The development of novel proton exchange membranes (PEMs) with high proton conductivity and good mechanical performance as alternatives to Nafion is crucial.
Bo Hu, Qiuchen Du, Yang Yang, Dengdeng Li, Jiawang Fu, Bailing Liu, Hong-Ying Zang, Yangguang Li, Haiming Xie, Zhongmin Su   +9 more
doaj   +1 more source

Magnetic field alignment of stable proton-conducting channels in an electrolyte membrane

Nature Communications, 2019
Proton exchange membranes with short-pathway through-plane proton conductivity are attractive for proton exchange membrane fuel cells. Here the authors align proton conducting channels orthogonal to the plane of composite proton exchange membranes using ...
Xin Liu, Yi Li, Jiandang Xue, Weikang Zhu, Junfeng Zhang, Yan Yin, Yanzhou Qin, Kui Jiao, Qing Du, Bowen Cheng, Xupin Zhuang, Jianxin Li, Michael D. Guiver   +12 more
doaj   +1 more source

Role of Solution Conductivity in Reaction Induced Charge Auto-Electrophoresis

, 2013
Catalytic bimetallic Janus particles swim by a bipolar electrochemical propulsion mechanism that results from electroosmotic fluid slip around the particle surface.
Moran, Jeffrey L., Posner, Jonathan D.
core   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Defect chemistry and transport properties of BaxCe0.85M0.15O3-d [PDF]

, 2004
The site-incorporation mechanism of M3+ dopants into A2+B4+O3 perovskites controls the overall defect chemistry and thus their transport properties. For charge-balance reasons, incorporation onto the A2+-site would require the creation of negatively ...
Espinosa, W. T. P., Haile, S. M., Li, L. P., Wu, J.   +3 more
core  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

High-temperature proton exchange membranes with tunable acidity of phosphonic acid groups by incorporating zwitterionic aromatic moieties

NPG Asia Materials
The electrochemical performance and durability of high-temperature proton exchange membranes (HT-PEMs) are critically influenced by the effective distribution of proton conductors, electrolyte retention, and interfacial compatibility.
Xiaofeng Hao, Xu Li, Shuanjin Wang, Min Xiao, Dongmei Han, Sheng Huang, Yuezhong Meng   +6 more
doaj   +1 more source

Polybenzimidazole-Based Polymer Electrolyte Membranes for High-Temperature Fuel Cells: Current Status and Prospects

Energies, 2020
Polymer electrolyte membrane fuel cells (PEMFCs) expect a promising future in addressing the major problems associated with production and consumption of renewable energies and meeting the future societal and environmental needs.
Zhengping Zhou, Oksana Zholobko, Xiang-Fa Wu, Ted Aulich, Jivan Thakare, John Hurley   +5 more
doaj   +1 more source