Research output: Contribution to journal › Article › peer-review
Electrochemically controlled energy release from a norbornadiene-based solar thermal fuel : Increasing the reversibility to 99.8% using HOPG as the electrode material. / Waidhas, Fabian; Jevric, Martyn; Bosch, Michael; Yang, Tian; Franz, Evanie; Liu, Zhi; Bachmann, Julien; Moth-Poulsen, Kasper; Brummel, Olaf; Libuda, Jörg.
In: Journal of Materials Chemistry A, Vol. 8, No. 31, 21.08.2020, p. 15658-15664.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Electrochemically controlled energy release from a norbornadiene-based solar thermal fuel
T2 - Increasing the reversibility to 99.8% using HOPG as the electrode material
AU - Waidhas, Fabian
AU - Jevric, Martyn
AU - Bosch, Michael
AU - Yang, Tian
AU - Franz, Evanie
AU - Liu, Zhi
AU - Bachmann, Julien
AU - Moth-Poulsen, Kasper
AU - Brummel, Olaf
AU - Libuda, Jörg
N1 - Funding Information: This project was funded by Deutsche Forschungsgemeinscha (DFG, project number 392607742). Additional support by the DFG through the Research Unit FOR 1878 ‘funCOS – Functional Molecular Structures on Complex Oxide Surfaces’ (project number 214951840) and the DFG (project numbers 322419553 and 431733372) is acknowledged. Further additional support through the German Federal Ministry of Education and Research (BMBF, Project Combined Infrared and X-Ray Analytics of Energy Materials, CIXenergy 05K19WE1) and the Helmholtz Institute Erlangen-Nürnberg for Renewable Energy is acknowledged. MJ and KMP would like to thank the Knut & Alice Wallenberg Foundation (KAW), the Swedish foundation for Strategic Research (SSF) and KMP would like to thank the European Research Council (ERC) for nancial support. T. Y. and Z. L. are supported by the National Natural Science Foundation of China under the contracts 11227902 and 21991152. We acknowledge the support provided by the China Scholarship Council (CSC) during a visit of T. Y. at the Friedrich-Alexander-Universität Erlangen-Nürnberg. Publisher Copyright: © The Royal Society of Chemistry. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/8/21
Y1 - 2020/8/21
N2 - 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. This journal is
AB - 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. This journal is
KW - STRAINED ORGANIC-MOLECULES
KW - QUADRICYCLANE SYSTEM
KW - STORAGE
KW - PHOTOISOMERIZATION
KW - ISOMERIZATION
KW - KINETICS
KW - SPECTROSCOPY
KW - OXIDATION
UR - http://www.scopus.com/inward/record.url?scp=85090907473&partnerID=8YFLogxK
U2 - 10.1039/d0ta00377h
DO - 10.1039/d0ta00377h
M3 - Article
AN - SCOPUS:85090907473
VL - 8
SP - 15658
EP - 15664
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 31
ER -
ID: 70652853