Electrochemically controlled energy release from a norbornadiene-based solar thermal fuel: increasing the reversibility to 99.8% using HOPG as the electrode material
Artikel i vetenskaplig tidskrift, 2020

Solar energy conversion using molecular photoswitches holds great potential to store energy from sunlight in the form of chemical energy in a process that can be easily implemented in a direct solar energy storage device. In this context, we investigated the electrochemically triggered energy release of a solar thermal fuel based on the norbornadiene (NBD)/quadricyclane (QC) couple by photoelectrochemical IR reflection absorption spectroscopy (PEC-IRRAS). We studied the photo-induced conversion of the energy-lean 2-cyano-3-(3,4-dimethoxyphenyl)-norbornadiene (NBD ') to the energy-rich 2-cyano-3-(3,4-dimethoxyphenyl)-quadricyclane (QC ') and the electrochemically triggered reconversion using highly oriented pyrolytic graphite (HOPG) as an electrode material. We compared our results with the results obtained previously using Pt(111) electrodes and we characterized the photochemical and electrochemical properties of the storage system. NBD ' can be photochemically converted and electrochemically reconverted with very high selectivity. HOPG largely suppresses the unwanted catalytic reconversion which was observed on Pt(111). We performed repetitive cycling experiments for 1000 cycles to determine the reversibility of the system. Our results show that it is possible to reach reversibility above 99.8% using HOPG as an electrode material.

Författare

Fabian Waidhas

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Martyn Jevric

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Kasper Moth-Poulsen Group

Michael Bosch

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Tian Yang

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

University of Shanghai for Science and Technology

Evanie Franz

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Zhi Liu

University of Shanghai for Science and Technology

Julien Bachmann

Saint Petersburg State University - Spsu

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Kasper Moth-Poulsen

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Kasper Moth-Poulsen Group

Olaf Brummel

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Joerg Libuda

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Journal of Materials Chemistry A

2050-7488 (ISSN)

Vol. 8 31 15658-15664

Ämneskategorier

Annan fysik

Annan kemi

Energisystem

DOI

10.1039/d0ta00377h

Mer information

Senast uppdaterat

2020-10-15