Electrochemical manufacturing and characterization of nanostructured electrodes for lithium-ion batteries

Background

This project focuses on fundamental research aiming at the development of a deeper understanding of the electrochemical processes which limit the safety, durability and capacity of lithium based batteries.

Aims & Approaches

The research, which includes studies of the electrochemical reactions taking place at lithium metal electrodes as well as nanostructured electrodes composed of lithium, tin, tin oxide, copper, carbon and titanium oxide using state-of-the-art electrochemical techniques, is based on our recent findings that free-standing nanostructured electrodes can serve as excellent model systems in electrochemical studies of Li-ion batteries. An improved understanding of key electrochemical processes (i.e. lithium nucleation, conversion reactions, alloy formation and intercalation as well as associated volume expansion effects and double layer effects), affecting the lifetime, safety and electrochemical behaviour of lithium based electrodes is essential for the realisation of the next generation of Li-based batteries (including lithium-oxygen and lithium-sulphur batteries). The overall scientific goal of the project is consequently to generate new electrochemical knowledge which will facilitate the use of electrode materials such as lithium, tin, tin oxide, aluminium and titanium oxide in versatile, safe and durable batteries with significantly improved capacities and power capabilities. 

Keywords

Li-ion batteries, electrochemical reactions, lithium, tin, silicon, titanium dioxide, nanotubes, nanostructures, conversion reaction, alloy formation, intercalation

Project leader

Prof. Leif Nyholm

Other project members

Dr. David Rehnlund

Dr. Zhaohui Wang

Solveig Böhme

Charlotte Ihrfors

Ruijun Pan

Habtom Desta Asfaw

Department of Chemistry – Ångström Laboratory, Uppsala University

Links and references

Link to the webpage “Electrochemistry and corrosion” at Uppsala University

Additional funding (apart from StandUp for Energy)

The Swedish Research Council (VR)

The Swedish Foundation for Strategic Research (SSF).