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Ambipolar zinc-polyiodide electrolyte for a high-energy density aqueous redox flow battery
Open accessAbstract
Redox flow batteries are receiving wide attention for electrochemical energy storage due to their unique architecture and advantages, but progress has so far been limited by their low energy density (~25 Wh l−1). Here we report a high-energy density aqueous zinc-polyiodide flow battery. Using the highly soluble iodide/triiodide redox couple, a discharge energy density of 167 Wh l−1 is demonstrated with a near-neutral 5.0 M ZnI 2 electrolyte. Nuclear magnetic resonance study and density functional theory-based simulation along with flow test data indicate that the addition of an alcohol (ethanol) induces ligand formation between oxygen on the hydroxyl group and the zinc ions, which expands the stable electrolyte temperature window to from −20 to 50 °C, while ameliorating the zinc dendrite. With the high-energy density and its benign nature free from strong acids and corrosive components, zinc-polyiodide flow battery is a promising candidate for various energy storage applications.
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te Velde, G., Bickelhaupt, F. M., Baerends, E. J., Fonseca Guerra, C., van Gisbergen, S. J. A., Snijders, J. G., & Ziegler, T. (2001) · Journal of Computational Chemistry · doi:10.1002/jcc.1056 · Cited by 10,152
Cited by
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A Metal-Organic Framework Host for Highly Reversible Dendrite-free Zinc Metal Anodes
Wang, Z., Huang, J., Guo, Z., Dong, X., Liu, Y., Wang, Y., & Xia, Y. (2019) · Joule · doi:10.1016/j.joule.2019.02.012 · Cited by 938
Towards polyvalent ion batteries: A zinc-ion battery based on NASICON structured Na3V2(PO4)3
Li, G., Yang, Z., Jiang, Y., Jin, C., Huang, W., Ding, X., & Huang, Y. (2016) · Nano Energy · doi:10.1016/j.nanoen.2016.04.051 · Cited by 734
Self-citationHighly Durable Na2V6O16·1.63H2O Nanowire Cathode for Aqueous Zinc-Ion Battery
Hu, P., Zhu, T., Wang, X., Wei, X., Yan, M., Li, J., Luo, W., Yang, W., Zhang, W., Zhou, L., et al. (2018) · Nano Letters · doi:10.1021/acs.nanolett.7b04889 · Cited by 710
Electrolyte Lifetime in Aqueous Organic Redox Flow Batteries: A Critical Review
Kwabi, D. G., Ji, Y., & Aziz, M. J. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.9b00599 · Cited by 616
Metadata
- Authors
- Li, B., Nie, Z., Vijayakumar, M., Li, G., Liu, J., Sprenkle, V., & Wang, W.
- Venue
- Nature Communications
- Published
- 2015-02-24
- Volume
- 6
- Issue
- 1
- Pages
- 6303-6303
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W1965767049
- Cited by
- 604
- References
- 1
- FWCI
- 18.28
- Type
- journal article
- Language
- en
- Open access
- gold
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- Li, B., Nie, Z., Vijayakumar, M., Li, G., Liu, J., Sprenkle, V., & Wang, W. (2015). Ambipolar zinc-polyiodide electrolyte for a high-energy density aqueous redox flow battery. Nature Communications. https://doi.org/10.1038/ncomms7303
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