Docent Lecture: "The electrode/electrolyte interphase – a critical yet elusive concept in Li-ion batteries."

  • Date: –11:15
  • Location: Zoom participation (preferred): https://uu-se.zoom.us/j/67718343598 Passcode: 555091 and Siegbahnsalen, Ångström Laboratory (strict 8 person limit)
  • Lecturer: Dr. Erik J. Berg
  • Organiser: Institutionen för kemi - Ångström
  • Contact person: Erik J. Berg
  • Docentföreläsning

The Department of Chemistry – Ångström Laboratory hereby invite all interested to a docentship lecture in subject of Chemistry with specialization in Materials Chemistry.

Chairperson: Prof. Daniel Brandell
Representative of the Docentship Committee: Prof. Adolf Gogoll

The lecture is an obligatory teaching test for those applying for admittance as docent and it should be possible for students and others with basic academic education in the relevant field to follow it. The lecture will last for 45 minutes and afterwards the audience may ask questions. The lecture will be given in English.

Abstract: 

Rechargeable batteries are critical to accelerate the societal transition from fossil fuels to renewable energies. Prime objectives of these energy storage systems are to buffer the intermittency of solar and wind power and to fuel electric vehicles. The Li-ion battery outperforms today all other rechargeable technologies due to its ability to store comparatively large amounts of energy reversibly. Despite the success, there is a lack of fundamental understanding of several critical battery components, among which electrode/electrolyte interphases stick out.

In the lecture, the Li-ion cell chemistry is presented and the critical role of interphases to stabilize both electrodes and electrolytes is explained. The formation and evolution of the most prominent example thereof, the solid electrolyte interphase (SEI), is more specifically discussed. We will learn about key physicochemical properties of the SEI, such as its structure, composition, thickness and electrochemical characteristics, but also why the SEI remains largely elusive and requires further research. Current scientific goals and methodologies for understanding interphases will be discussed, especially with respect to available infrastructure and competences at Ångström Advanced Battery Centre (ÅABC) of Uppsala University. The lecture ends with an outlook on future prospects and challenges in the field.

Welcome!