Park, Sul Ki;
Boruah, Buddha Deka;
Pujari, Arvind;
Kim, Byung‐Man;
De Volder, Michael;
(2022)
Photo‐Enhanced Magnesium‐Ion Capacitors Using Photoactive Electrodes.
Small
, Article 2202785. 10.1002/smll.202202785.
(In press).
Preview |
Text
Photo Enhanced Magnesium Ion Capacitors.pdf - Published Version Download (1MB) | Preview |
Abstract
Off-grid power sources are becoming increasingly important for applications ranging from autonomous sensor networks to fighting energy poverty. Interactions of light with certain classes of battery and capacitor materials have recently gained attention to enhance the rate performance or to even charge energy storage devices directly with light. Interestingly, these devices have the potential to reduce the volume and cost of autonomous power sources. Here, a light-enhanced magnesium (Mg)-ion capacitor is shown. The latter is interesting because of the large natural abundance of Mg and its ability to operate in low cost and non-flammable aqueous electrolytes. Photoelectrodes using a combination of vanadium dioxide and reduced graphene oxide can achieve capacitance enhancements of up to 56% under light exposure alongside a 21% higher energy density of 20.5 mAh kg-1 .
| Type: | Article |
|---|---|
| Title: | Photo‐Enhanced Magnesium‐Ion Capacitors Using Photoactive Electrodes |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/smll.202202785 |
| Publisher version: | https://doi.org/10.1002/smll.202202785 |
| Language: | English |
| Additional information: | © 2022 The Authors. Small published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | light-enhanced capacitors, magnesium-ion capacitors, photoactive electrodes VO 2 |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery UCL > Provost and Vice Provost Offices > UCL BEAMS UCL UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10155824 |
Archive Staff Only
 |
View Item |
