1. Integrated Photoelectrochemical Solar Energy Conversion and Organic Redox Flow Battery Devices.
- Author
-
Li, Wenjie, Fu, Hui ‐ Chun, Li, Linsen, Cabán ‐ Acevedo, Miguel, He, Jr ‐ Hau, and Jin, Song
- Subjects
- *
FLOW batteries , *PHOTOELECTROCHEMICAL cells , *SOLAR energy conversion , *OXIDATION-reduction reaction , *SULFONIC acids , *ANTHRAQUINONE derivatives - Abstract
Building on regenerative photoelectrochemical solar cells and emerging electrochemical redox flow batteries (RFBs), more efficient, scalable, compact, and cost-effective hybrid energy conversion and storage devices could be realized. An integrated photoelectrochemical solar energy conversion and electrochemical storage device is developed by integrating regenerative silicon solar cells and 9,10-anthraquinone-2,7-disulfonic acid (AQDS)/1,2-benzoquinone-3,5-disulfonic acid (BQDS) RFBs. The device can be directly charged by solar light without external bias, and discharged like normal RFBs with an energy storage density of 1.15 Wh L−1 and a solar-to-output electricity efficiency (SOEE) of 1.7 % over many cycles. The concept exploits a previously undeveloped design connecting two major energy technologies and promises a general approach for storing solar energy electrochemically with high theoretical storage capacity and efficiency. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF