Plasmas & Micro Fuel Cell Application

Plasmas & Micro Fuel Cell Application

Feature Article: Plasmas & Micro Fuel Cell Application

See how plasmas are being used to help drive research in novel micro-fuel cell applications.

Read an excerpt from the article below:

Single Step Plasma Deposition of Platinum-Fluorocarbon Nanocomposite Films as Electrocatalysts of Interest for Micro Fuel Cells Technology

Single Step Plasma Deposition of Platinum Fluorocarbon Nanocomposite Films as Electrocatalysts of Interest for Micro Fuel Cells Technology Antonella Milella,* Fabio Palumbo,* Elena Dilonardo, Gianni Barucca, Pinalysa Cosma, Francesco Fracassi
Courtesy of Plasma Process. Polym. 2014, 11, 1068–1075, ß 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim1068

 

In this paper, we present a one step plasma based approach for the deposition of Pt-fluorocarbon nanocomposite films as electrocatalysts in hydrogen-based micro fuel cells. Results show that the chemical and morphological struc ture of the film can be tuned by controlling the power delivered to the plasma, and the gas feed composition. Platinum is included in the film in metallic form and its content can be continuously varied from a few atomic percent to 86%. The metal is embedded in the film as crystalline nanoclusters of size below 10 nm, uniformly distributed across the sample.

Film catalytic activity, in terms of hydrogen oxidation reaction, has been tested by cyclovoltammetry and it increases with the Pt loading, with a maximum specific electrochemical surface area of 94 cm 2 mg 1, for film deposited on flat glassy carbon.

1. Introduction

Proton exchange membrane(PEM) fuel cells are devices able to provide electricity with virtually zero emissions. In hydrogen based fuel cells, the oxidation of H 2 occurs at the anode while O 2 is reduced at the cathode. Both these reactions heavily rely on the use of a catalyst, with Pt generally being the most effective one. [1–3]

The overall reaction is then the recombination of molecular hydrogen and oxygen which produces water and energy. The core of a PEM fuel cell is the membrane electrode assembly (MEA), which consists of a proton conductive membrane sandwiched between two catalytic electrodes. Nanoparticles of platinum and its alloys, supported on conductive porous carbonaceous substrates, are mainly used as catalyst, while Nafion 1, a perfluorosulfonic polymer, as proton conductive material. In the common ‘‘stack’’ configuration, a PEM fuel cell is made of a membrane hot pressed between the two electrodes and combined in series with other cells via bipolar plates. PEM fuel cells are primarily designed for portable applications, which require lower power outputs (5–50 W), with automotive use being the ultimate objective.

To view the remaining part of this article please use the link below

Single Step Plasma Deposition of Platinum-Fluorocarbon Nanocomposite Films as Electrocatalysts of Interest for Micro Fuel Cells Technology

To discuss your requirements for plasma treatment please click here

Categorised in: News & Events