Direct Solar Charging of an Organic-Inorganic, Stable, and Aqueous Alkaline Redox Flow Battery with a Hematite Photoanode

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Kristina Wedege (Author) Other; João Azevedo (Author) FEUP; Amirreza Khataee (Author) Other; Anders Bentien (Author) Other; Adélio Mendes (Author) FEUP

Journal

Title: Angewandte Chemie - International Edition

Vol. 55 No. 25

Pages: 7142-7147

ISSN: 1433-7851

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 40 Citations

ISI Web of Science

Scopus - 70 Citations

Scientific classification

CORDIS: Technological sciences

Associated Projects

BI-DSC - Building Integrated Dye Sensitized Solar Cells

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Other information

Authenticus ID: P-00K-W2J

DOI: 10.1002/anie.201602451

Abstract (EN): The intermittent nature of the sunlight and its increasing contribution to electricity generation is fostering the energy storage research. Direct solar charging of an auspicious type of redox flow battery could make solar energy directly and efficiently dispatchable. The first solar aqueous alkaline redox flow battery using low cost and environmentally safe materials is demonstrated. The electrolytes consist of the redox couples ferrocyanide and anthraquinone-2,7-disulphonate in sodium hydroxide solution, yielding a standard cell potential of 0.74 V. Photovoltage enhancement strategies are demonstrated for the ferrocyanide-hematite junction by employing an annealing treatment and growing a layer of a conductive polyaniline polymer on the electrode surface, which decreases electron-hole recombination.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6