Nano Coatings for Solid Oxide Fuel Cells

Objective: To improve the lifetime and increase the durability of solid oxide fuel cell (SOFC) systems by the use of nano-coatings.

The solid oxide fuel cell (SOFC) suffers from an operational lifetime that is far short of commercial requirements. The problem is being tackled in this project. SOFC is important in relation to sustainable development. When compared to other fuel cell technologies, SOFC’s offer unmatched fuel flexibility with the ability to run on everything from pure hydrogen to biodiesel and biogas. 


This flexibility is made possible by operating in a higher temperature range, between 650 and 800C. Higher temperatures also however mean quicker material degradation, which is where the challenge lies in this project. The goal is to increase the lifespan of the fuel cell. An important component is the so called interconnect that connects individual cells to each other. The sheets are composed of a specially developed stainless steel, on which a nanocoating is then applied.

 

The nanocoatings that the project participants hope to develop will hopefully allow fuel cells to have lifetimes that make them economically attractive.

 

Result summary

 

Solid Oxide Fuel Cell (SOFC) technology allows for a highly efficient electricity production. However, the high operating temperature (>600°C) poses large problems for the steels used as interconnects in SOFC stacks because of corrosion. 

 

The objective of the project was to improve the lifetime and increase the durability of SOFC systems by the use of nano-coatings. The final stack testing clearly indicates that the objective can be met. A 2500h stack test was performed and significantly improved performance and the reduction in resistance of the stack implies that the lifetime could be prolonged by nano-coatings.

 

More information

 

Read NaCoSOFC's administrative report

Visit the NaCoSOFC project website

 

Participating institutions

 

 

Project leader

 

Jan Froitzheim, Assistant Professor

Chalmers University of Technology, Sweden

jan.froitzheim@chalmers.se

+46 31 772 2858

 

Project owner

 

Jan-Erik Svensson, Professor, Chemical and Biological Engineering

Chalmers University of Technology, Sweden

jes@chalmers.se

+46 31 772 28 63

 

Project participants

 

  • Jan Froitzheim, Chalmers University of Technology, Sweden
  • Jan-Erik Svensson, Chalmers University of Technology, Sweden
  • Reidar Haugsrud, University of Oslo, Norway
  • Claus Friis Pedersen, Topsoe Fuel Cells, Denmark