About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Energy Materials for Sustainable Development
|
Presentation Title |
Electrospun Vanadium Pentoxide Nanofibers as a Photocathode in a Light Rechargeable LIB |
Author(s) |
Michael Wilhelm, Ruth Adam, Aman Bhardwaj, Veronika Brune, Sanjay Mathur |
On-Site Speaker (Planned) |
Michael Wilhelm |
Abstract Scope |
Sunlight is the most sustainable energy source on earth, which can be harvested and converted into electricity. This harvested energy must be immediately used or stored electrochemically. Lithium-ion batteries (LIB) are currently one of the most promising techniques to do so. The innovative way of a so-called “photo battery” using a shared electrode, as both, energy harvester and storage, could be an innovative way to play a big role in terms of renewable energy. Vanadium pentoxide (V<sub>2</sub>O<sub>5</sub>) has a suitable band gap (2.35 eV) and good theoretical capacity value (294 mAh g<sup>-1</sup> for 2 Li<sup>+</sup>) to work as both.
Within here, we report electrospun vanadium pentoxide nanofibers (VNF) and carbon-coated VNF by plasma-enhanced chemical vapor deposition. Under light illumination, the discharge capacity could be increased. Further, the materials could be charged only by light to power a LED and achieve promising overall conversion efficiencies. |