Results 51 to 60 of about 550,628 (217)
Carbon NeutralityNitrogen-doping has been proposed as a method to enhance the performance of Pt-based electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs).
Hong Zhang +5 more
doaj +1 more source
HeliyonProton-exchange membrane (PEM) dry–wet variation during PEM fuel cell (PEMFC) operation markedly affects PEMFC lifespan. Therefore, deeper insights into the mechanical degradation mechanism of PEM require analysis of the membrane dry–wet change process ...
Xin Zhan +5 more
doaj +1 more source
Nature CommunicationsThe performance of anion exchange membrane water electrolysis, a key technology for achieving net-zero carbon emissions, can be improved by introducing an appropriate catalyst support.
Jong Seok Park +14 more
doaj +1 more source
Applications of impedance spectroscopy in thermoelectricity [PDF]
, 2019 t is widely used in a lot of different fields (solar cells, fuel cells, corrosion, supercapacitors, batteries, etc.). • Powerful and very reliable equipment are available in the market.
Beltrán-Pitarch, Braulio +1 more
core
Fabrication of bifunctional membrane electrode assemblies for unitised regenerative polymer electrolyte fuel cells [PDF]
, 2006 Bifunctional membrane electrode assemblies have been fabricated using a screen printing technique, which demonstrate a repeatable and stable operation to cell current and voltages.
Harrison, DJ, Pettersson, J, Ramsey, BJ
core +1 more source
Nature CommunicationsAmine-assisted two-step CO2 hydrogenation is an efficient route for methanol production. To maximize the overall catalytic performance, both the N-formylation of amine with CO2 (i.e., first step) and the subsequent amide hydrogenation (i.e., second step)
Desheng Su +10 more
doaj +1 more source
Electrocatalysis in Solid Acid Fuel Cells [PDF]
, 2011 Solid state electrochemical reactions play a crucial role in many energy conversion devices, yet the pathways of many reactions remain unknown. The elusiveness of the reaction mechanisms is due, in part, to the complexity of electrochemical reactions ...
Louie, Mary W. C.
core +1 more source
Fuel Transformer Solid Oxide Fuel Cell [PDF]
, 2005 The following report documents the technical approach and conclusions made by Acumentrics Corporation during latest budget period toward the development of a low cost 10kW tubular SOFC power system. The present program, guided under direction from the National Energy Technology Laboratory of the US DOE, is a nine-year cost shared Cooperative Agreement ...
Bessette, Norman +4 more
openaire +7 more sources
Effects of ionomer chemical degradation on low-Pt proton exchange membrane fuel cells
Future BatteriesFree radicals are a class of reactive substances produced during the operation of proton exchange membrane fuel cells (PEMFCs), which have a great impact on the durability of PEMFCs. Previous research on the fuel cell degradation mechanism mainly focused
Xiaohui Yan +10 more
doaj +1 more source
Improved Pt/CeO2 Electrocatalysts for Ethanol Electro-oxidation
International Journal of Electrochemical Science, 2018 A simple and low-cost approach for the preparation of wide-gap (Eg = 3.43 eV), fine cerium dioxide crystals (CeO2, d = 8.1 nm), was developed in order to support Pt nanoparticles as electrocatalysts for ethanol oxidation.
Guilherme L. Cordeiro +7 more
doaj +1 more source