News

Wide bandgap oxides with ionic conductor operate as single-layer fuel cell

Researchers at Aalto University explain underlying mechanisms of a single-layer fuel cell based on a wide bandgap oxide and ionic conductor mixture.

Nanocomposite fuel cells have recently been shown to be able to work as a 1-layer fuel cell instead of a 3-layer (cathode,electrolyte, anode) traditional fuel cell. The 1-layer fuel cell is made of a mixture of semiconducting and ionic materials which contain all functionalities of a fuel cell. Basically, such as fuel cell would have a major potential for mass production because of its simple structure. The working principle of the single layer fuel cell has been debated. Now Aalto University researchers have verified the underlying mechanisms of this fuel cell type by using wide bandgap oxide materials (LiNiZn) with gadolinium-doped ceria. The oxides work as an insulator against electrons in the material preventing short-circuting of the fuel cell. It was found that the material mixture is a protonic conductor. The test fuel cells built reached a power density of 357 mW/cm2 at 550 C without using catalytic current collectors.

The results were published in Nano Energy 53 (2018) 391-397.

  • Published:
  • Updated:
Share
URL copied!

Related news

In Tension 4 Photo by_ Eeva Suorlahti
Research & Art, Studies Published:

Near futures online exhibition provides a view into future solutions

The socially impactful projects of the master's students who graduated in the academic year 2019–2020 are now on display in an online exhibition.
The photo shows the School of Business main staircase. The photo was taken by Unto Rautio.
Research & Art Published:

Academy of Finland corona-related funding to Assistant Professor Ewald Kibler’s research group

The group will study the effects of the COVID-19 crisis on entrepreneurs who are over 50 years old and for whom the crisis thus poses several risks.
Economicum-rakennus vaahterapuun katveessa
Cooperation, Research & Art Published:

Seventh report of the Helsinki GSE situation room: Largest drop in salary amount in April in Kouvola, Vaasa and Helsinki

The report is presented at an open access webinar in Zoom on Thursday, 4 June at 8 am.
A board room
Research & Art Published:

Should corporate boards be involved in the strategy of companies?

When company boards get involved in the management’s strategy, accountability can be compromised