|About this Abstract
||MS&T22: Materials Science & Technology
||Energy Materials for Sustainable Development
||Electrospun Vanadium Pentoxide Nanofibers as a Photocathode in a Light Rechargeable LIB
||Michael Wilhelm, Ruth Adam, Aman Bhardwaj, Veronika Brune, Sanjay Mathur
|On-Site Speaker (Planned)
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.