A Bio‐Inspired, Heavy‐Metal‐Free, Dual‐Electrolyte Liquid Battery towards Sustainable Energy Storage. (9th March 2016)

• Record Type: Journal Article
• Authors: Ding, Yu; Yu, Guihua
• Is Part Of: Angewandte Chemie. Volume 128:Number 15(2016)
• Page Start: 4850
• Page End: 4854
• Publication Date: 2016-03-09
• Subjects: Chinon -- Elektrochemie -- Flüssigbattterien -- Metallfreie Materialien -- Nachhaltige Chemie; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201600705
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Wide‐scale exploitation of renewable energy requires low‐cost efficient energy storage devices. The use of metal‐free, inexpensive redox‐active organic materials represents a promising direction for environmental‐friendly, cost‐effective sustainable energy storage. To this end, a liquid battery is designed using hydroquinone (H2 BQ) aqueous solution as catholyte and graphite in aprotic electrolyte as anode. The working potential can reach 3.4 V, with specific capacity of 395 mA h g −1 and stable capacity retention about 99.7 % per cycle. Such high potential and capacity is achieved using only C, H and O atoms as building blocks for redox species, and the replacement of Li metal with graphite anode can circumvent potential safety issues. As H2 BQ can be extracted from biomass directly and its redox reaction mimics the bio‐electrochemical process of quinones in nature, using such a bio‐inspired organic compound in batteries enables access to greener and more sustainable energy‐storage technology. Abstract : Vielseitige Energiespeicher : Die Verwendung von metallfreien, redoxaktiven, organischen Materialien ist vielversprechend für die Entwicklung umweltfreundlicher, kostengünstiger und nachhaltiger Energiespeicher. Da Hydrochinon direkt aus Biomasse extrahiert werden kann, bietet die Verwendung von biologisch inspirierten organischen Verbindungen in Batterien Zugang zu einer nachhaltigen Energiespeichertechnologie.