Pulsed Laser Synthesis of SnO2-Pt Nano-Thin Films onto Carbon Nanotubes and their Electrocatalytic Activity Towards Ethanol Oxidation

Newcomb²,

2012

J. Electrochem. Soc.

A one-dimensional (1D) core/shell hybrid electrocatalyst for alkaline direct ethanol fuel cells (ADEFC) has been fabricated using metal@oxide (Ni@NiO) nanowire arrays (NWA) as a novel support for porous Pt nanoparticles (Pt NP). The Ni@NiO NWA has been fabricated by direct electrodeposition inside a polycarbonate template and the subsequent conversion of the outer shell of Ni into an oxide performed by oxygen plasma annealing after template removal. The Pt NP have been deposited onto the Ni@NiO NWA surface by hydrothermal reduction using a borohydride technique. Transmission electron microscopy (TEM) has shown that the PtNP contain a homogeneous distribution of fine pores. The electro-catalytic activity for the electro-oxidation of ethanol in alkaline media for Ni@NiO NWA/Pt has been found to be 126 mA/cm 2 . Chronoamperometry has been used to show that the Ni@NiO NWA/Pt electrocatalyst exhibits favorable stability and activity as well as tolerance to CO-like poisoning during ethanol electro-oxidation at temperatures of 21 • C and 50 • C. The data described indicates that the Ni@NiO NWA/Pt electrocatalyst is a potential candidate to replace the commercial Pt/C NP anode electrocatalysts currently used in ADEFC.

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mentioning

confidence: 99%

Porous Core/Shell Ni@NiO/Pt Hybrid Nanowire Arrays as a High Efficient Electrocatalyst for Alkaline Direct Ethanol Fuel Cells

Newcomb²,

2012

J. Electrochem. Soc.

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Electrochemically Fabricated Nanostructures in Energy Storage and Conversion Applications

Handbook of Nanoelectrochemistry

Jamal

et al. 2015

In order to move away from the carbon-based energy technologies, electrochemical energy production and storage is under serious consideration as an alternative energy/power source. The future success of this global effort is under review, and researchers are looking forward to designing more sustainable and environmentally friendly electrochemical energy storage and conversion (EESC) systems. Electrochemical energy storage and conversion systems in the broadest sense have three variants: batteries, fuel cells, and electrochemical capacitors, also known as supercapacitors. The energy storage and conversion mechanisms in these three systems are different, but the energy -providing processes in these systems -all follow solid state and surface interface chemistry, taking place in active electrode materials and at the phase boundary of the electrode/electrolyte interface. Also, all three systems consist of two electrodes which are in contact with the electrolyte but separated by a membrane. Conventional materials used in these systems cannot meet the ever-increasing demand for energy. Thereby, designing efficient and miniaturized EESC devices that achieve high energy storage or delivery at high charge and discharge rates and with lifetimes capable of matching the specific requirements of applications is one of the major challenges facing today's research community.Thereby, this chapter will review some of the recent developments (2010)(2011)(2012)

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Electrochemically Fabricated Nanostructures in Energy Storage and Conversion Applications

Handbook of Nanoelectrochemistry

Jamal

et al. 2015