Integrated Photoelectrochemical Solar Energy Conversion and Organic Redox Flow Battery Devices

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• 作者：Wenjie Li ; Hui-Chun Fu ; Dr. Linsen Li ; Dr. Miguel Cabá ; n-Acevedo ; Prof. Jr-Hau He and Prof. Song Jin
• 刊名：Angewandte Chemie International Edition
• 出版年：2016
• 出版时间：October 10, 2016
• 年：2016
• 卷：55
• 期：42
• 页码：13104-13108
• 全文大小：2502K
• ISSN：1521-3773

文摘

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.