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!

Read more news

Interactive data visualization analysis of the genetic ancestry of Finland.
Cooperation, Research & Art Published:

New data visualization provides creative ways of analyzing the genetic ancestry of Finland

A new study conducted at the University of Helsinki succeeded in assessing the genetic ancestry of more than 18,000 Finns. Aalto ARTS contributed to the study’s information design and interactive data visualization.
diction-kuvio-01
Research & Art Published:

Reports

Read the final report of the studies carried out within the DICTION consortium.
QS-ranking tulos 2021
Press releases, Research & Art Published:

Aalto University’s Art & Design now ranked 6th in the world

Six of Aalto’s fields reached the top 100 in the prestigious QS ranking
Kuvassa vihreällä taustalla kuva vaaleasta naisesta ja tapahtuman otsikko
Research & Art Published:

How can there be an education crisis when the children are going to school?

UNESCO estimates that about half of the schoolchildren in developing countries do not even have the basic skills that they need even though they have been attending school for years.