Results 1 to 10 of about 529,483 (274)

Research progress in metal-oxide supported on graphene as catalysts in oxygen reduction reaction

open access: yesCailiao gongcheng, 2023
Catalysts have an essential effect on oxygen reduction reactions(ORR). In recent years, many efforts have been made to search high-performance non precious metal catalysts that can replace Pt metals.
WANG Jun   +5 more
doaj   +1 more source

One –step synthesis of PdCo alloy nanoparticles decorated on reduced grahene oxide as an Electro-catalyst for Oxygen Reduction Reaction in Passive Direct Methanol Fuel Cells [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2015
We report a Pd-Co (3:1)/graphene oxide (Pd3Co /GO) catalyst through a one-step strategy. GO is synthesized from graphite electrodes using ionic liquid-assisted electrochemical exfoliation.
Karim Kakaei   +2 more
doaj   +1 more source

Temperature-dependent electronic structure of bixbyite α-Mn2O3 and the importance of a subtle structural change on oxygen electrocatalysis

open access: yesScience and Technology of Advanced Materials, 2021
Bixbyite $$\alpha $$-Mn2O3 is an inexpensive Earth-abundant mineral that can be used to drive both oxygen evolution (OER) and oxygen reduction reactions (ORR) in alkaline conditions.
Junais Habeeb Mokkath   +4 more
doaj   +1 more source

PtPd Hybrid Composite Catalysts as Cathodes for Proton Exchange Membrane Fuel Cells

open access: yesEnergies, 2020
In this work, PtPd hybrid cathodic catalysts were prepared for a proton exchange membrane fuel cell (PEMFC) application by two different strategies. The first strategy was the physical mixing of bimetallic PtPd onto partially reduced graphene oxide (PtPd/
Yazmín Yorely Rivera-Lugo   +8 more
doaj   +1 more source

A novel approach to pulsed laser deposition of platinum catalyst on carbon particles for use in polymer electrolyte membrane fuel cells

open access: yesBeilstein Journal of Nanotechnology, 2023
The research undertaken aimed to develop an efficient Pt-based catalyst for polymer electrolyte membrane fuel cells (PEMFCs) by using a cost-effective and efficient physical method to deposit platinum nanoparticles (PtNPs) on carbon supports directly ...
Bogusław Budner   +5 more
doaj   +1 more source

Between the Bishop’s Hall and the Hurchin: Enlightenment Legacies in Post-Union Antrim and Down [PDF]

open access: yesEstudios Irlandeses, 2023
This essay looks at post 1798 tensions in Belfast, Antrim and Down, using a survey of literary and cultural texts. It notes a range of responses to the first two decades of the nineteenth century in those associated with United Irish aspiration and those
FRANK FERGUSON
doaj  

Smooth and Strong PCPs [PDF]

open access: yes, 2020
Probabilistically checkable proofs (PCPs) can be verified based only on a constant amount of random queries, such that any correct claim has a proof that is always accepted, and incorrect claims are rejected with high probability (regardless of the given
Paradise, Orr
core   +1 more source

Design and Modeling of Viscoelastic Layers for Locomotive Wheel Damping

open access: yesVibration, 2021
Rail–wheel interaction is one of the most significant and studied aspects of rail vehicle dynamics. The vibrations caused by rail–wheel interaction can become critical when the radial, lateral and longitudinal loads of the vehicle, cargo and passengers ...
Mpho Podile   +3 more
doaj   +1 more source

Developing practical clinical tools for predicting neonatal mortality at a neonatal intensive care unit in Tanzania

open access: yesBMC Pediatrics, 2021
Background Neonatal mortality remains high in Tanzania at approximately 20 deaths per 1000 live births. Low birthweight, prematurity, and asphyxia are associated with neonatal mortality; however, no studies have assessed the value of combining underlying
Dory Kovacs   +5 more
doaj   +1 more source

Cross-linked CoMoO4/rGO nanosheets as oxygen reduction catalyst [PDF]

open access: yes, 2017
Development of inexpensive and robust electrocatalysts towards oxygen reduction reaction (ORR) is crucial for the cost-affordable manufacturing of metal-air batteries and fuel cells. Here we show that cross-linked CoMoO4 nanosheets and reduced graphene
Fu, Jiaqi   +7 more
core   +2 more sources

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