Nanostructures for Solar Hydrogen Production and Electrochemical Energy Storage

Datum

24.05.2013

Zeit

13:00 - 14:00

Sprecher

Dr. Lifeng Liu

Zugehörigkeit

International Iberian Nanotechnology Laboratory (INL)

Sprache

en

Hauptthema

Materialien

Andere Themen

Materialien, Physik

Host

Ulrike Steere

Beschreibung

Solar cells that convert solar energy into electrical energy have been extensively investigated and widely deployed in many countries. Due to the intermittent nature, the electricity generated by solar cells has to be immediately used or stored in a secondary device such as a battery. An emerging approach that allows for storing solar power more elegantly and potentially more practically is to convert solar energy directly into chemical energy in the simplest chemical bond, H2. This can be achieved by photoelectrocatalysis of water using semiconductors as both the light absorber and energy converter. In this talk, basic concepts and working principles for photoelectrochemical water splitting using semiconductor/liquid junctions will be presented, followed by an experimental demonstration of solar hydrogen production based on well-aligned p-type silicon nanobelt arrays. It will be shown that nanostructuring can greatly enhance the photoelectrochemical performance of p-type silicon toward hydrogen generation. In addition, recent experimental results on developing high-performance anode materials for lithium-ion batteries and electrode materials for supercapacitors will also be reported. .

Links

• Seminars at the IFW

Letztmalig verändert: 24.05.2013, 09:40:34