Results 81 to 90 of about 314 (212)

Liquid Water Visualization in the Pt‐Loading Cathode Catalyst Layers of Polymer Electrolyte Fuel Cells Using Operando Synchrotron X‐ray Radiography

Advanced Energy & Sustainability Research
Water management is important for addressing the challenges posed by next‐generation fuel cell electric vehicles. Although X‐ray imaging techniques are useful for probing the mechanism of water transport in the gas diffusion layer of polymer electrolyte ...
Wataru Yoshimune, Akihiko Kato, Tetsuichiro Hayakawa, Satoshi Yamaguchi, Satoru Kato   +4 more
doaj   +1 more source

Catholyte‐Free Composite Cathodes Break the Energy Density Barrier of All‐Solid‐State Lithium Batteries

Carbon Energy, EarlyView.
All‐solid‐state lithium batteries (ASSLBs) with conventional catholyte‐based composite cathodes have a theoretical energy density limit of approximately 400 Wh kg–1 and 900 Wh L–1. The design of catholyte‐free composite cathodes can break this barrier and improve the theoretical energy density up to 500 Wh kg–1 and 1000 Wh L–1. ABSTRACT The gravimetric
Kai Wang, Tian Ma, Shiqing Sun, Rongcheng Zhang, Ying Wu, Hongyun Ma, Dequan Liu, Yujun Fu, Junshuai Li, Deyan He   +9 more
wiley   +1 more source

π‐Extended Salphen Scaffolds Enable CO2 Electroreduction and Singlet Oxygen Generation

Chemistry – A European Journal, EarlyView.
New family of π‐extended salen ligands bearing phenylene bridge and tunable phenyl‐based substituents, and their corresponding boron difluoride complexes. Thanks to the extended π‐delocalization over the molecule, the ligands themselves show promising results in electrochemical CO2 reduction to CO, while the complexes act as efficient photosensitizers ...
Vincenzo Langellotti, André Korzun, Morgan J. McKee, Massimo Melchiorre, Taegeun Jo, J. Felipe Estrada‐Ruiz, Gregor Schnakenburg, Stefano Crespi, Francesco Ruffo, Nikolay Kornienko, Alessandro Bismuto   +10 more
wiley   +1 more source

Formation of nanostructures on the cathode in an electric arc discharge

Physical Sciences and Technology, 2015
One of the wide spread and economic methods of carbon nanomaterials (CNM) synthesis is an arc evaporation of graphite [1]. Products, formed in plasma due to the evaporation of graphite anode and containing CNM, are deposited on cathode and on reactor ...
Ye. Zplotarenko, M. Gabdullin, T. Ramazanov, H. Abdullin, D. Batryshev, D. Schur, S. Zaginaichenko, A. Dubovoy, A. Pomytkin, A. Magrez, M. Baibarac   +10 more
doaj  

Optimization of fuel cell-assisted heating cold-start strategy based on NSGA-II algorithm

Química Nova
The cold start of fuel cells presents a major bottleneck in commercialization, with auxiliary heating strategies serving as a crucial method to achieve rapid cold start.
Yongming Shao, Mingyu Lu, Haomai Feng, Yucheng Hou, Yueqi Si   +4 more
doaj   +1 more source

Electrochemiluminescence of Heteroleptic Iridium(III) Complexes Featuring Substituted 2,4‐diphenylpyridinato Ligands

Chemistry – A European Journal, EarlyView.
Five heteroleptic iridium(III) complexes bearing cyclometalated 2,4‐diphenylpyridinato ligands were synthesized and their electrochemiluminescence (ECL) investigated. Two different coreactants were evaluated: tri‐n‐propylamine and benzoyl peroxide under anodic and cathodic potentials, respectively.
Ovini Jayawardana, El M. S. Martin, Oliver G. Stansfield, Egan H. Doeven, Carol Hua, Timothy U. Connell, Paul S. Francis   +6 more
wiley   +1 more source

Innovative solid-state battery fabrication and interface engineering for sustainable transportation and green energy systems

Green Energy and Intelligent Transportation
Lithium-ion solid-state batteries (SSBs) play a key role in the next-generation battery technology. This work compares the characteristics and fabrication procedures of sulfide-based and oxide-based solid electrolytes (SEs). Since ionic conductivity is a
Haofeng Su, Peifeng Li, Ningyue Mao, Rongheng Li, Xinru Zhao, Yifu Li, Weixing Zhou, Xuan Zhou   +7 more
doaj   +1 more source

Electrochemical Fluorination of Partially Fluorinated Dialkylethers. Synthesis of Sevoflurane Derivatives (CF3)2CHOCHF2, (CF3)2CHOCF3, and (CF3)2CFOCF3

Chemistry – A European Journal, EarlyView.
Electrochemical fluorination (ECF, Simons process) is a valuable method for the fluorination of partially fluorinated dialkyl ethers, providing an inexpensive, scalable, and safe access to partially fluorinated ethers with a higher fluorine content and the perfluorinated analogues that are hardly accessible using other fluorination techniques ...
Tanja Knuplez, Leon N. Schneider, Erik R. Csapo, Peer Kirsch, Nikolai V. Ignat'ev, Maik Finze   +5 more
wiley   +1 more source

Catalytic Oxidation of CO and VOC in Flue Gas of Coffee Roasting Machines

Chemie Ingenieur Technik, EarlyView.
Platinum‐coated cordierite monoliths effectively oxidized CO and VOC in coffee roasting exhaust with higher Pt loadings lowering light‐off temperatures. Scaled up 90 g/ft3 catalyst in a 5 kg roaster achieved 96% CO and around 78% VOC conversion at 350°C, highlighting stable operation requires flue gas temperatures ≥350°C.
Till Hauswald, Kalle Weidauer, Christoph Hahn, Sven Kureti   +3 more
wiley   +1 more source

Aqueous Supercapacitor with Wide‐Temperature Operability and over 100,000 Cycles Enabled by Water‐in‐Salt Electrolyte

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
This study presents a symmetric supercapacitor with activated carbon electrodes and a “water‐in‐salt” electrolyte (WiSE) based on lithium perchlorate, offering over 100,000 cycles with over 90 % capacity retention. The supercapacitor operates efficiently from −20 to 80 °C, enhancing performance, stability, and all‐season operability.
Zahid Ali Zafar, Radim Weisser, Ghulam Abbas, Martin Silhavik, Prabhat Kumar, Jiří Červenka   +5 more
wiley   +1 more source