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Method of synthesis of an electrode for use as a catalyst of oxygen evolution reaction

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Development of cost-effective oxygen evolution catalysts is of capital importance for the deployment of large-scale energy-storage systems based on metal-air batteries and reversible fuel cells. In this direction, a wide range of materials have been explor ...

AMER CHEMICAL SOC2019

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The oxygen evolution reaction (OER) is a key process that enables the storage of renewable energies in the form of chemical fuels. Here, we describe a catalyst that exhibits turnover frequencies higher than state-of-the-art catalysts that operate in alkali ...

2019

Solar Water Splitting with Perovskite/Silicon Tandem Cell and TiC-Supported Pt Nanocluster Electrocatalyst

Christophe Ballif, Shaik Mohammed Zakeeruddin, Quentin Thomas Jeangros, Florent Sahli, Jing Gao, Jingshan Luo, Jérémie Werner, Dan Ren

Developing efficient, stable, and cost-effective photosystems to split water into hydrogen and oxygen using sunlight is of paramount importance for future production of fuels and chemicals from renewable sources. However, the high cost of current systems l ...

2019

The fabrication of particle-based photoelectrodes by coating or dipping procedures-similar to the scaled fabrication of battery electrodes-can be a route to overcome the efficiency-cost tradeoff of photoelectrochemical (PEC) water splitting devices. Additi ...

EPFL2019

Non-Precious Electrodes for Practical Alkaline Water Electrolysis

Hubert Girault, Alberto Battistel, Alejandro Nicolás Colli

Water electrolysis is a promising approach to hydrogen production from renewable energy sources. Alkaline water electrolyzers allow using non-noble and low-cost materials. An analysis of common assumptions and experimental conditions (low concentrations, l ...

2019

Motivated to advance the renewable energy production and diversify the technologies for storable energy carriers, my work is concentrated on the characterization and the optimization of electrode morphologies applicable in photoelectrochemical water-splitt ...

EPFL2019

Oxygen Isotope Labeling Experiments Reveal Different Reaction Sites for the Oxygen Evolution Reaction on Nickel and Nickel Iron Oxides

Xile Hu, Magalí Alejandra Lingenfelder, Seunghwa Lee, Karla Banjac

Nickel iron oxide is considered a benchmark nonprecious catalyst for the oxygen evolution reaction (OER). However, the nature of the active site in nickel iron oxide is heavily debated. Here we report direct spectroscopic evidence for the different active ...

2019

Porous networks based on iron(ii) clathrochelate complexes

Rosario Scopelliti, Kay Severin, Farzaneh Fadaei Tirani, José Luis Bila, Emilie Baudat, Andrea Luca Ramorini, Joffrey Vincent Michel Pijeat

Microporous networks based on boronate ester-capped iron(II) clathrochelate complexes are described. The networks were obtained by covalent cross-linking of tetrabrominated clathrochelate complexes via Suzuki–Miyaura polycross-coupling reactions with dibor ...

2019

Nanostructured Electrocatalysts for Water Splitting Reactions

Lucas-Alexandre Stern

At the dawn of the 21st century, mankind is facing an important energy challenge. Future energy demand can only be met by large scale exploitation of renewable energy resources. Solar energy is abundant, with a sufficient capacity for the growing energy de ...

EPFL2017

Defects on surface and interface for photoelectrochemical properties of hematite photoanodes

Yelin Hu

Hydrogen is a highly versatile fuel that may become one of the key solutions to face our future energy challenges. Among all these methods for hydrogen production, solar water splitting offers possible advantages regarding components integration, stability ...

EPFL2017