Results 91 to 100 of about 39,366 (304)

Electrochemical Reduction of CO2 on Au Electrocatalysts in a Zero-Gap, Half-Cell Gas Diffusion Electrode Setup: a Systematic Performance Evaluation and Comparison to a H-cell Setup

, 2021
Based on H-cell measurements, gold (Au) is one of the most selective catalysts for the CO2 reduction reaction (CO2RR) to CO. To ensure a high dispersion, typically Au small nanoparticles (NPs) are used as catalyst.
Jonathan, Quinson, Gustav K.H., Wiberg, Damin, Zhang, Stephan, Barcikowski, Nicolas, Schlegel, Sven, Reichenberger, Yao , Li, Shima, Alinejad, Matthias, Arenz   +8 more
core   +1 more source

Electro‐Steric Ion Confinement in Polyelectrolyte Networks for Robust Nonvolatile Artificial Synapse

Advanced Functional Materials, EarlyView.
Polyelectrolyte stoichiometry governs ion transport and retention in electrolyte‐gated synaptic transistors. A PSS‐rich network creates electro‐steric ion confinement that suppresses ion back‐diffusion and stabilizes channel doping, enabling robust nonvolatile synaptic memory, linear weight updates, and low‐energy operation.
Donghwa Lee, Jinbo Kim, Myeongjin An, Jisoo Park, Junho Sung, Eunsung Hwang, Suhwan Seok, Seong‐Min Bak, Jeonghun Kim, Eunho Lee   +9 more
wiley   +1 more source

Alternative Gas Diffusion Electrode Designs: Influence of Porosity Gradients on the Electrochemical Activity

Gas diffusion electrodes (GDEs) are essential in various electrochemical applications aimed at reducing CO2 emissions and combating climate change, such as fuel cells, electrolyzers and metal-air batteries.
Skadell, Karl, Bekisch, Artur, Christiansen, Silke, Weidl, Roland, Ast, Johannes, Schulz, Matthias, Stelter, Michael   +6 more
core   +1 more source

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

Advanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He, Wenbo Wang, Simon Schweidler, Yanjiao Ma, Ben Breitung, Torsten Brezesinski   +5 more
wiley   +1 more source

Understanding the Operation of a Gas Diffusion Electrode Setup for the Oxygen Reduction Reaction: Experiment versus 3D Multiphysics Modeling

ChemElectroChem
Proton exchange membrane fuel cells (PEMFC) require highly efficient oxygen reduction reaction (ORR) electrocatalysts. The intrinsic ORR performance of advanced ORR catalysts (measured in rotating disk electrode, RDE) is often not obtained in membrane ...
Erwan Tardy, Raphaël Riasse, Florent Vandenberghe, Florence Druart, Marian Chatenet, Antoine Bonnefont   +5 more
doaj   +1 more source

Electrolytic CO2 reduction in membrane electrode assembly: Challenges in (Bi)carbonate, crossover, and stability

Next Materials
Membrane electrode assembly (MEA) electrolyzers for carbon dioxide reduction reaction (CO2RR) present a transformative approach for reducing CO2 emissions while producing valuable chemicals.
Minqiu Lan, Wenhao Ren
doaj   +1 more source

(Invited) Gas-Diffusion Electrodes for CO₂ Reduction

ECS Meeting Abstracts, 2018
One of the main challenges towards achieving high-efficiency solar-fuel generators performing CO2 reduction are the mass-transport limitations in traditional aqueous systems due to CO2 interactions/solubility and boundary-layer thickness. To circumvent these issues, gas-diffusion electrodes (GDEs) are considered wherein the CO2 is fed in a vapor ...
Lien-Chun Weng, Alexis T. Bell, David M Larson, Oyinkansola Romiluyi, Adam Z. Weber   +4 more
openaire   +3 more sources

A Dual‐Functional Electrolyte Additive for Highly Reversible Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
This study introduces tetrabutylammonium bromide (TBAB) as a dual‐function additive for aqueous zinc‐ion batteries. TBAB disrupts the hydrogen‐bond network of water while TBA+ adsorbs on Zn to improve interfacial wettability and regulate Zn2+ flux, resulting in suppressed dendrite growth and parasitic reactions. This synergy extended the lifespan of Zn|
Shirui Zhang, Shixun Wang, Jianen Zhang, Jun Liu, Jinfeng Xie, Wentao Tang, Li Guan, He Huang, Qi Xue, Chunyi Zhi   +9 more
wiley   +1 more source

Avaliação da degradação do diclofenaco sódico utilizando H2O2/fenton em reator eletroquímico Evaluation of the degradation of sodium diclofenac using H2O2/fenton in electrochemical reactor

Química Nova, 2009
This paper describes a degradation study of the anti-inflammatory sodium diclofenac in aqueous medium using an electro-chemical flow reactor with a gas diffusion electrode as cathode. Two degradation processes were compared: by H2O2 electro-generated and
Robson S. Rocha, André A. G. F. Beati, Joaquim G. Oliveira, Marcos R. V. Lanza   +3 more
doaj   +1 more source

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source