Results 21 to 30 of about 3,251 (179)

Synthesis of Pt Carbon Aerogel Electrocatalysts with Multiscale Porosity Derived from Cellulose and Chitosan Biopolymer Aerogels via Supercritical Deposition for Hydrogen Evolution Reaction

Advanced Energy and Sustainability Research, EarlyView.
The synthesis of platinumcarbon aerogel electrocatalysts with multiscale porosity derived from biopolymer aerogels via supercritical deposition is presented. The electrocatalysts demonstrate similar overpotentials to commercial alternatives with significantly higher platinum loadings, while exhibiting superior stability due to enhanced porosity ...
Ala Alsuhile, Philip Sidney Pein, Şansim Bengisu Barım, Selmi Erim Bozbağ, Irina Smirnova, Can Erkey, Baldur Schroeter   +6 more
wiley   +1 more source

Zero‐Valent Iron Nanoparticles Supported on Si/N Codoped Carbon Materials: From Biomass to Oxygen Reduction Electrocatalysts and Supercapacitors

Advanced Energy and Sustainability Research, EarlyView.
Zero‐valent iron nanoparticles on Si/N codoped carbon support are prepared from hydrothermal carbonization and pyrolysis of biomass, silica, and iron salt. The Fe nanoparticles are evenly distributed on the support and encapsulated in graphitic or iron oxide shells.
Lilian Moumaneix, Oktay Safarov, Tanja Kallio   +2 more
wiley   +1 more source

Osmoxylon‐like fossils from early Eocene South America: West Gondwana–Malesia connections in Araliaceae

American Journal of Botany, EarlyView.
Abstract Premise Araliaceae comprise a moderately diverse, predominantly tropical angiosperm family with a limited fossil record. Gondwanan history of Araliaceae is hypothesized in the literature, but no fossils have previously been reported from the former supercontinent.
Peter Wilf
wiley   +1 more source

Additively Manufactured Binder‐Free Electrodes for Supercapacitors

Batteries &Supercaps, EarlyView.
The study presents an innovative manufacturing process for electrodes in supercapacitors. The masked stereolithography method is used to produce electrodes that do not require a binder or metal foil. The printed electrodes have a microporous charter. Electrochemical measurements show that the additively manufactured electrodes behave in the same way as
Johannes Heumann, Dominik Müller, Norman T. M. Baltes, Sebastian Geiger, Peter Schultz, Angelos Polyzoidis, Jens Tübke   +6 more
wiley   +1 more source

Direct Powder Adhesion Method of Quinone‐Based Aqueous Supercapacitor for Roll‐to‐Roll Process

Batteries &Supercaps, EarlyView.
Introducing a novel Direct Powder Adhesion (DPA) method for quinone‐based supercapacitors that simplifies electrode fabrication, enhances rate performance, and supports high‐rate charging and discharging. Compared to conventional pressing, the DPA method provides lower electrode density, higher conductivity, and enhanced specific capacity ...
Nagihiro Haba, Yuto Katsuyama, Ayaka Kido, Keisuke Morimoto, Yuta Nakayasu   +4 more
wiley   +1 more source

Ni‐Based Catalysts for 5‐Hydroxymethylfurfural Electrooxidation Coupled with Hydrogen Production

ChemElectroChem, EarlyView.
The co‐electrolysis of H2O and 5‐hydroxymethylfurfural (HMF) using Ni‐based catalysts, under alkaline conditions, co‐produces low‐carbon hydrogen and furandicarboxylic acid. This review delves into the electrooxidation mechanism of HMF electrooxidation, presents recent advancements in the performance of Ni‐based catalysts and highlights the effects of ...
Itzcóatl Rafael Garduño‐Ibarra, Zhigang Yan, Sayed Ahmed Ebrahim, Elena Baranova, Jesús González‐Cobos, Mathieu Prévot, Philippe Vernoux   +6 more
wiley   +1 more source

Alcohol and Carbonyl Redox Reactions in Electrochemical Organic Synthesis

ChemistryEurope, EarlyView.
This review aims to provide the reader with a useful tool to deal with electrochemical redox reactions involving alcohols and carbonyl compounds. The review is organized in an accessible format and divided into sections that focus on key parameters of wide‐ranging electrosynthetic methods.
Fiammetta Vitulano, Andrea Solida, Letizia Sorti, Carlo F. Morelli, Alessandro Minguzzi, Alberto Vertova   +5 more
wiley   +1 more source

Pnictogenation‐Driven Exsolution of Size‐Tunable Ru Electrocatalysts in Conductive Matrices to Reinforce Inner‐Sphere‐Mechanism‐Assisted Electronic Coupling

Carbon Energy, EarlyView.
Here, we report an exsolution route to size‐tunable Ru‐metal nanocatalysts embedded in conductive metal pnictogenide matrices via the gas‐phase pnictogenation reaction of Ni2Fe1−xRux‐LDH. The inner‐sphere‐mechanism‐assisted interfacial electronic coupling between exsolved single‐atom nanocatalysts and conductive nickel iron pnictogenide matrices led to
Dong Hoon Sun, So Yeon Yun, Xiaoyan Jin, Seong‐Ju Hwang   +3 more
wiley   +1 more source

Nanoscopic Wonders: Carbon Quantum Dots as Catalysts and Charge Carriers in Advanced Energy Storage Systems

CleanMat, EarlyView.
CQD‐based composites are used as charge carriers in different energy storage materials (like batteries and supercapacitors) and as catalysts in energy storage (like overall water splitting and oxygen reduction reactions). ABSTRACT Research on the synthesis and uses of zero‐dimensional (0D) carbon quantum dots (CQDs) has emerged as a dynamic and ...
Samarjeet Singh Siwal, Pariksha Bishnoi
wiley   +1 more source

Going from Pt to PGM‐free Catalysts: Effects of Ink Compositions on PEM Water Electrolysis

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Optimisation of cathode ink formulations regarding the ratio between catalyst, carbon and binder results in a boost in PEM water electrolysis performance. The optimisation can be transferred from pentlandites to platinum and selenide catalysts, wherein the metal chalcogenides show a stronger performance enhancement.
Janna Wierper, Jannick Hiltrop, Kevinjeorjios Pellumbi, Julia Jökel, Sebastian Sanden, Miłosz Kożusznik, Andrzej Mikuła, Ulf‐Peter Apfel   +7 more
wiley   +1 more source