Listar por tema "Precious metals"
Mostrando ítems 1-10 de 10
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3D Co-N-doped hollow carbon spheres as excellent bifunctional electrocatalysts for oxygen reduction reaction and oxygen evolution reaction
(2017)Non-precious materials have been considered as promising bifunctional catalysts towards oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In the present work, a three dimensional (3D) Co-N co-doped hollow ... -
Direct alcohol fuel cells: Challenges and future trends
(2011)Among the most considered future alternative energy conversion systems are fuel cells. A fuel cell is an electrochemical device that continuously and directly converts chemical energy to electricity with the most common ... -
Efficient carbon dioxide electroreduction over rationally designed heterogeneous Ag2S-Au nanocomposites
(2022)Electrochemical carbon dioxide reduction reaction (CO2RR) is regarded as an effective strategy to store abundant renewable energy and build a carbon neutral society. Gold (Au) and silver (Ag)-based catalysts for the effective ... -
Electrocatalytic production of hydrogen over highly efficient ultrathin carbon encapsulated S, P co-existence copper nanorods composite
(2020)Electrocatalysis plays a key role in energy conversion processes (such as hydrogen evolution reaction-HER) to several renewable energy technologies developed to reduce our dependence on fossil fuels. It is of great importance ... -
Excavated and dendritic Pt-Co nanocubes as efficient ethylene glycol and glycerol oxidation electrocatalysts
(2019)Noble metal electrocatalysts with excavated and dendritic architectures have recently attracted growing attention for their large accessible surface areas and high density of under-coordinated atoms. However, it is a tough ... -
Iron oxide@graphitic carbon core-shell nanoparticles embedded in ordered mesoporous N-doped carbon matrix as an efficient cathode catalyst for PEMFC
(2020)Developing electrocatalysts with high activity and long-term stability towards oxygen reduction reaction (ORR) in acidic media is still an important topic. However, most of the already reported non-precious-metal catalysts ... -
Molybdenum-modified and vertex-reinforced quaternary hexapod nano-skeletons as efficient electrocatalysts for methanol oxidation and oxygen reduction reaction
(2019)Noble metal binary and ternary catalysts have become a new class of fuel cell electrocatalysts due to their high catalytic activity. However, improvement is still necessary to reduce the consumption of Pt and obtain the ... -
N, S Codoped Carbon Matrix-Encapsulated Co9S8 Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries
(2021)Herein, a N, S co-doped carbon encapsulating Co9S8 nanoparticles (Co9S8@N, S–C) catalyst is successfully synthesized by a new precursor of Co-pyridine coordinated-polymer consisting of 2,6-diacetylpyridine and 4,4′-dithi ... -
N-Doped Porous Molybdenum Carbide Nanobelts as Efficient Catalysts for Hydrogen Evolution Reaction
(2018)Electrochemical water splitting has been highly valued as a clean and sustainable method to produce hydrogen with high purity and large quantity. Platinum (Pt) possesses excellent performance for hydrogen evolution reaction ... -
Single noble metal atoms doped 2D materials for catalysis
(2021)Single atoms loaded on two-dimensional materials (SA@2DMs) have been broadly explored recently in the field of catalysis. Compared with conventional supports, 2D materials with large surface areas, unique geometric structure, ...