Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 15, Pages 4772-4776Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201600705
Keywords
electrochemistry; liquid batteries; metal-free; quinone; sustainable chemistry
Categories
Funding
- National Science Foundation [NSF-CMMI-1537894]
- 3M Nontenured Faculty Award
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1537894] Funding Source: National Science Foundation
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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 (H(2)BQ) aqueous solution as catholyte and graphite in aprotic electrolyte as anode. The working potential can reach 3.4V, with specific capacity of 395mAhg(-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 H(2)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.
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