A solar rechargeable flow battery based on electroactive organic redox couples. Issue 3 (December 2018)

• Record Type: Journal Article
• Authors: Zhang, Wenhua; Liu, Ping; Zhang, Xingwang
• Is Part Of: IOP conference series. Volume 452:Issue 3(2018)
• Publication Date: 2018-12
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/452/3/032068
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: An integrated photo-electrochemical solar energy conversion and storage device is developed by a dye sensitized TiO2 solar cells and 2, 2, 6, 6-tetramethyl-1-piperidinyloxy (TEMPO) / 1, 4-Benzoquinone (BQ) redox flow batteries. The device can be directly charged by solar light without external bias, and discharged like normal RFBs with an energy storage density of 3.5 mAhg-1 over many cycles. The proposed device demonstrates a rapid photo-charge at light illumination and a stable electrochemical discharge in the dark, realizing an in situ photo-to-chemical-to-electrical conversion and photo-to-chemical storage.