Publications de Fang Song | EPFL Graph Search

Anion Exchange Ionomers Enable Sustained Pure-Water Electrolysis Using Platinum-Group-Metal-Free Electrocatalysts

Xile Hu, Fang Song, Nanjun Chen, Ariana Serban, Yiwei Zheng

Anion exchange membrane water electrolyzer (AEMWE) is a rising technology that offers potential advantages in cost and scalability over proton exchange membrane water electrolyzer (PEMWE) technology. However, AEMWEs that stably operate in pure water still ...

2023

Robust Piperidinium-Enriched Polystyrene Ionomers for Anion Exchange Membrane Fuel Cells and Water Electrolyzers

Xile Hu, Fang Song, Nanjun Chen

Durable and efficient anion exchange polyelectrolytes (AEPs) are crucial for the long-term operation of cost-effective anion exchange membrane fuel cells (AEMFCs) and water electrolyzers (AEMWEs). Here, we present a new class of ?-amine-piperidinium-functi ...

AMER CHEMICAL SOC2023

An Unconventional Iron Nickel Catalyst for the Oxygen Evolution Reaction

Michaël Bensimon, Anne-Clémence Corminboeuf, Xile Hu, Fang Song, Michael Markus Busch, Elitsa Petkucheva

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

Solvent-induced surface hydroxylation of a layered perovskite Sr3FeCoO7−δ for enhanced oxygen evolution catalysis

Xile Hu, Fang Song, Xiang Xu, Jun Gu, Kongliang Xu

Efficient oxygen evolution reaction (OER) catalysts made of earth abundant elements are essential for the cost-effective generation of solar fuels. Surface modification is a novel strategy to enhance the activity of OER catalysts, however, it is commonly d ...

Royal Society of Chemistry2018

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

Xile Hu, Fang Song, Elitsa Petkucheva

Disclosed are methods of synthesis of an oxidized nickel foam electrode incorporating iron including the step of subjecting a nickel foam electrode to repetitive cyclic voltammetric scans in a basic solution containing iron. Also disclosed is an oxidized n ...

2018

Nickel iron diselenide compound, process for the preparation thereof and its use as a catalyst for oxygen evolution reaction

Xile Hu, Fang Song

The present invention relates to a nickel iron diselenide compound of general formula (I): NixFe1-xSe2, wherein 0 < x < 1, and to the use of this compound as a precursor of catalysts for oxygen evolution reaction (OER). This invention also concerns methods ...

2018

Transition Metal Oxides as Electrocatalysts for the Oxygen Evolution Reaction in Alkaline Solutions: An Application-Inspired Renaissance

Xile Hu, Laurent Liardet, Fang Song, Aliki Moysiadou, Lichen Bai, Seunghwa Lee, Chao Hu

Water splitting is the essential chemical reaction to enable the storage of intermittent energies such as solar and wind in the form of hydrogen fuel. The oxygen evolution reaction (OER) is often considered as the bottleneck in water splitting. Though meta ...

2018

Efficient Water Splitting Catalyzed by Cobalt Phosphide-Based Nanoneedle Arrays Supported on Carbon Cloth

Xile Hu, Fang Song, Peng Wang

Efficient and low-cost electrocatalysts for water splitting are essential for solar fuel production. Herein, we report that nanoarrays of CoP supported on carbon cloth are an efficient bifunctional catalyst for overall water splitting. The catalyst exhibit ...

Wiley-VCH Verlag Berlin2016

A nanoporous oxygen evolution catalyst synthesized by selective electrochemical etching of perovskite hydroxide CoSn(OH)(6) nanocubes

Kurt Schenk, Xile Hu, Fang Song

The development of efficient and Earth-abundant oxygen evolution reaction (OER) catalysts is essential for the generation of renewable hydrogen. The synthesis of nanoporous and high-surface-area catalysts remains challenging. Herein, we show that large nan ...

Royal Society of Chemistry2016

An Easily Accessed Nickel Nanoparticle Catalyst for Alkene Hydrosilylation with Tertiary Silanes

Xile Hu, Ivan Buslov, Fang Song

The first efficient and non-precious nanoparticle catalyst for alkene hydrosilylation with commercially relevant tertiary silanes has been developed. The nickel nanoparticle catalyst was prepared in situ from a simple nickel alkoxide precatalyst Ni((OBu)-B ...

Wiley-Blackwell2016

From Water Oxidation to Reduction: Transformation from NixCo3-xO4 Nanowires to NiCo/NiCoOx Heterostructures

Xile Hu, Fang Song, Lei Liu

A homologous Ni-Co based nanowire catalyst pair, composed of NixCo3-xO4 nanowires and NiCo/NiCoOx nanohybrid, is developed for efficient overall water splitting. NixCo3-xO4 nanowires are found as a highly active oxygen evolution reaction (OER) catalyst, an ...

Amer Chemical Soc2016

A nickel iron diselenide-derived efficient oxygen-evolution catalyst

Xile Hu, Fang Song, Xiang Xu

Efficient oxygen-evolution reaction catalysts are required for the cost-effective generation of solar fuels. Metal selenides have been reported as promising oxygen-evolution catalysts; however, their active forms are yet to be elucidated. Here we show that ...

Nature Publishing Group2016

Ni2P as a Janus catalyst for water splitting: the oxygen evolution activity of Ni2P nanoparticles

Xile Hu, Lucas-Alexandre Stern, Ligang Feng, Fang Song

Electrochemical water splitting into hydrogen and oxygen is a promising method for solar energy storage. The development of efficient electrocatalysts for water splitting has drawn much attention. However, catalysts that are active for both the hydrogen ev ...

Royal Society of Chemistry2015

Ultrathin Cobalt-Manganese Layered Double Hydroxide Is an Efficient Oxygen Evolution Catalyst

Xile Hu, Fang Song

Cost-effective production of solar fuels requires robust and earth-abundant oxygen evolution reaction (OER) catalysts. Herein, we report that ultrathin nanoplates of cobaltmanganese layered double hydroxide (CoMn LDH) are a highly active and stable oxygen ...

American Chemical Society2014

Exfoliation of layered double hydroxides for enhanced oxygen evolution catalysis

Xile Hu, Fang Song

The oxygen evolution reaction is a key reaction in water splitting. The common approach in the development of oxygen evolution catalysts is to search for catalytic materials with new and optimized chemical compositions and structures. Here we report an ort ...

Nature Publishing Group2014