Phone: +45 22754487
|Project Title:||Development of novel electrode-catalyst materials for Li-air battery cathodes|
|Advisor(s):||Tejs Vegge, Poul Norby and Keld Johansen|
|University:||Technical University of Denmark, DTU|
|Department:||DTU Energy Conversion|
|Company:||Haldor Topsøe A/S|
|Analytical techniques:||Mass Spectroscopy (MS), Differential electrochemical mass spectrometry (DEMS), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM)|
|Electrochemical techniques:||Cyclic voltammetry (CV), Electrochemical impedance spectroscopy (EIS),Chronoamperometry, Chronopotentiometry|
Description of PhD project
The project is concentrated on characterization and testing novel materials to be used as cathode in Lithium-air batteries. The choice of materials is based on a fundamental understanding of the reaction mechanisms and a screening of stability.
Building a differential electrochemical mass spectrometer and reliable test cells is essential to obtain this understanding.
Further knowledge about reaction mechanisms and limiting factors of the battery will be sought by developing an electrochemical impedance spectroscopy model.
Jonathan Højberg received his Cand. Polyt. in Physics and Nanotechnology from the Technical University of Denmark (DTU) in 2011 with a specialization within atomic scale physics related to sustainable energy solutions.
He is currently pursuing a PhD within the field of Lithium-air batteries in a collaboration between DTU Energy Conversion and Haldor Topsøe A/S. He has been heavily engaged in building up state-of-the-art test facilities for Lithium-air batteries at both places and deciding which experiments to conduct.
Jonathan is highly motivated by the interplay between universities and industry, and how the synergies can accelerate the development of new and sustainable energy technologies. In 2009 he founded a company to leverage a newly developed technology to harvest ocean wave energy. The proof-of-concept was developed by making bachelor projects and courses for 15 students at DTU with different competences and coordinating this work. The work resulted in a top-3 in the national start-up competition Venture Cup in the cleantech category and the ideas were adapted in a national collaboration granted 48 MDKK by the Advanced Technology Foundation in 2011 to further develop the technology.
Besides ocean wave power and batteries, Jonathan has worked extensively with the development of cathode materials for Solid Oxide Fuel Cells at the Fuel Cells and Solid State Chemistry Division at Risø, DTU (now part of DTU Energy Conversion). The work focussed on building electrochemical models to describe the cathode, and identify and optimize the most important parameters.
- 2019-06-19 – Webinar – Recycling of Li-ion batteries in Denmark — May 22, 2019
- Highlights from Danish Battery Symposium 2016 — April 18, 2016
- Update from the Discussion Session on material testing — October 25, 2015
- Annual meeting in the Danish Electric Vehicle Alliance — October 25, 2015
- General Meeting 2015 — February 19, 2015