News
New paper online: Pt dissolution in realistic fuel cell catalyst layers
15 January 2021
Our new work on Pt dissolution in realistic fuel cell catalyst layers was published in Angewandte Chemie. In this current work we present the first experimental approach to measure Pt dissolution in gas diffusion electrodes (GDE). Therefore we coupled our GDE half-cell setup with inductively coupled plasma mass spectrometry (ICPMS). With this, Pt dissolution in realistic catalyst layers and the transport of dissolved Pt species through Nafion membranes are evaluated directly.
We hereby observe that (i) specific Pt dissolution is increasing significantly with decreasing Pt loading, (ii) in comparison to experiments on aqueous model systems with flow cells, the measured dissolution in GDE experiments is considerably lower and, (iii) by adding a membrane onto the catalyst layer, Pt dissolution is reduced even further. All these phenomena can be attributed to the varying mass transport conditions of dissolved Pt species, influencing re-deposition and equilibrium potential. With the presented method we were also able to measure the diffusion coefficient of Pt species in Nafion, which can be of great importance when modelling fuel cell degradation.
More details can be found in Angewandte Chemie International Edition at the following link: https://doi.org/10.1002/anie.202014711.
Back to all news
All news
The Best Poster Award won by Carolin Sophie Igel in the 8th Baltic Electrochemistry Conference
3 May 2024
Congratulations, Carolin!
Cornelius Simon joined us as a Bachelor student!
15 March 2024
Welcome Cornelius!
Pamella Rodrigues joined us as our new visiting researcher!
8 February 2024
Welcome, Pamella!
Our latest study on backing electrode degradation during OER is now published in ACS Catalysis!
1 December 2023
Congratulations, Matej!
28 November 2023
Well done, Pascal and Ken!
Joanna Przybysz joined us as a Master student!
1 May 2023
Welcome, Joanna!
The Best Poster Award won by Tuani Carla Gentil in the 34th Topical Meeting of the ISE
23 March 2023
Great job, Tuani!
Lucía Morales joined our group as a new Master student!
7 March 2023
Welcome, Lucía!
Ken has been selected for the HIDA Trainee Network!
17 February 2023
Congratulations, Ken!
Konrad successfully defended his PhD thesis
16 December 2022
Congratulations, Dr. Konrad Ehelebe!
Carolin Igel joined our group as a new Master student!
21 October 2022
Welcome, Carolin!
Visiting researcher Dr. Kavita Kumar also joined our group!
13 September 2022
Welcome, Kavita!
Our visiting researcher Dr. Dyovani Coelho just joined us!
12 September 2022
Welcome, Dyovani!
Kamyar Parsi joined us as a new master student!
8 September 2022
Welcome, Kamyar!
Yunsheng Qiu joined our team as a PhD student!
23 August 2022
Welcome, Yunsheng!
Daniel and Konrad will attend the upcoming Lindau Nobel Laureate meeting!
6 May 2022
Congratulations, Daniel and Konrad!
Daniel and Ken got an ECS Travel Grant Award!
6 May 2022
Congratulations, Daniel and Ken!
Alexandre Nozadze joined our group as a bachelor student!
1 April 2022
Welcome, Alexandre!
Our ACS Energy Letters paper is a highly read article!
3 March 2022
Congratulations, Konrad!
Tuani Carla Gentil joined us as a guest researcher!
1 March 2022
Welcome, Tuani!