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Conducting barriers for direct contact of PZT thin films on reactive substrates

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Photonic Flash Synthesis of Mo2C/Graphene Electrocatalyst for the Hydrogen Evolution Reaction

Hubert Girault, Danick Reynard, Bhawna Nagar

Nowadays, molybdenum carbides (Mo2C) represent alternative electrocatalysts to noble metal for the hydrogen evolution reaction (HER). Here, a fast and simple process is proposed for the fabrication of Mo2C-based electrocatalysts on a carbon cloth substrate ...

AMER CHEMICAL SOC2021

Modeling Current Transients in a Reciprocal Motion Tribocorrosion Experiment

Stefano Mischler, Shoufan Cao

Tribocorrosion of passivating metals is a dynamic phenomenon causing degradation of materials by a combination of mechanical wear and electrochemical dissolution. The mechanical action typically produces a local removal of particles, metal as well as oxide ...

ELECTROCHEMICAL SOC INC2021

Imaging the Heterogeneity of the Oxygen Evolution Reaction on Gold Electrodes Operando: Activity is Highly Local

Sylvie Roke, Arianna Marchioro, Igor Nahálka

Understanding the mechanism of the oxygen evolution reaction (OER), the oxidative half of electrolytic water splitting, has proven challenging. Perhaps the largest hurdle has been gaining experimental insight into the active site of the electrocatalyst use ...

2020

Photorealistic modelling of metals from first principles

Nicola Marzari, Gianluca Prandini, Gian-Marco Rignanese

The colours of metals have attracted the attention of humanity since ancient times, and coloured metals, in particular gold compounds, have been employed for tools and objects symbolizing the aesthetics of power. In this work, we develop a comprehensive fr ...

Springer2019

Dual-Facet Mechanism in Copper Nanocubes for Electrochemical CO2 Reduction into Ethylene

Raffaella Buonsanti, Jianfeng Huang, Giulia Mangione

The product selectivity in the electrochemical reduction of carbon dioxide depends on the structure of the copper electrode. Cube-shaped copper catalysts, enclosed by {100} terraces, {110} edges, and {111} corners, exhibit a size-dependent enhanced only se ...

2019

On the Metal Contents of Ocean Floor Nodules, Crusts and Massive Sulphides and a Preliminary Assessment of the Extractable Amounts

The metal contents of ocean floor nodules, crusts and massive sulphides was estimated and an assessment of their commercial extractability were conducted. The metals considered were iron, manganese, copper, nickel, cobalt, molybdenum, platinum, gold and si ...

Paul Scherrer Institute, World Resources Forum2019

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Nowadays the development of stable and highly efficient Solid-Contact Ion-Selective Electrodes (SC-ISEs) attracts much attention in the research community because of the great expansion of portable analytical devices. In this work, we present highly stable ...

2018

Recent data on the Noble metal (Pd-Pt-Rh-Ir-Au-Ag-Cu-Ni) high entropy alloys (HEAs) shows some of these materials to have impressive mechanical properties. Here, a mechanistic theory for the temperature-, composition-, and strain-rate-dependence of the ini ...

2018

Chromate is one of the major anthropogenic contaminants on Earth. Leucobacter chromiiresistens is a highly chromate-resistant strain, tolerating chromate concentrations in LB medium of up to 400 mM. In response to chromate stress, L. chromiiresistens forms ...

AMER SOC MICROBIOLOGY2018

Fouling-resistant pencil graphite electrode

Sandro Carrara, Francesca Stradolini, Tugba Kilic

A Pencil Graphite Electrode (PGE) is herein disclosed. The electrode is characterized by a reduced content in graphite and an increased content in clay of the composite material composing it compared to the prior art PGEs. In particular, the PGE according ...

2018