Electrochemistry and corrosion

This research deals with fundamental electrochemistry and the development of materials and electrochemical methods that can be used in e.g. Li-ion batteries, supercapacitors, fuel cells, and micro- and nanosensors. Electrochemical techniques are used to manufacture materials and to study the electrochemical properties (including the corrosion resistances) of different materials. Many of the materials are studied in Li-ion batteries and paper based energy storage devices with the aim to develop an improved understanding of the electrochemical behaviour of the materials and the devices. Much of the latter work is carried out in close collaboration with the Structural Chemistry programme (within the Ångström Advanced Battery Center, ÅABC) and the Nanotechnology and Functional Materials programme, respectively.

Electrodeposition and electrochemical studies of Li-ion battery materials

Electrochemical methods are developed for the manufacturing of nanostructured electrode materials and for the study of materials in Li-ion microbatteries. This work involves e.g. electrodeposition of three-dimensional current collectors followed by electrodeposition of layers of anode or cathode materials on the obtained current collectors.

Active in the project:
Leif Nyholm, Wei Wei, Zhaohui Wang, David Rehnlund, Solveig Böhme, Charlotte Ihrfors, Ruijun Pan, Habtom Desta Asfaw

Paper based energy storage devices

Composites based on high surface area cellulose (from the green algae Cladophora) and an electronically conducting polymer, polypyrrole, are developed for use in inexpensive, flexible and environmentally friendly energy storage devices.

Active in the project:
Leif Nyholm, Zhaohui Wang, Petter Tammela

Corrosion

The corrosion resistances of new materials made e.g. by magnetron sputtering techniques are evaluated and electrochemical test procedures are developed. This research involves e.g. investigations of the electrochemical properties of different coatings on different types of stainless steel. Corrosion reactions are also employed to manufacture nanostructures comprising metal oxide nanotubes.

Active in the project:
Leif Nyholm, Ulf Jansson, Kristian Nygren, Wei Wei, Charlotte Ihrfors