A rechargeable zinc-air battery based on zinc peroxide chemistry
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Münster, Germany.; OSTI
- Department of Materials Science, Fudan University, Shanghai, China.
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, China.
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Münster, Germany.
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, USA.
- Energy Storage Branch, Biomaterials and Energy Division, Sensor and Electro Devices Directorate, U.S. Army Research Laboratory, Adelphi, MD, USA.
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, USA.; Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, USA.
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Münster, Germany.; Helmholtz Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Münster, Germany.
When two is better than four
Batteries based on the reaction of zinc and oxygen have been used for more than a century, but these have been primary (that is, nonrechargeable) cells. These batteries use an alkaline electrolyte and require a four-electron reduction of oxygen to water, which is a slow process. Sunet al.show that with the right choice of nonalkaline electrolyte, the battery can operate using a two-electron zinc-oxygen/zinc peroxide chemistry that is far more reversible. By making the electrolyte hydrophobic, water is excluded from the near surface of the cathode, thus preventing the four-electron reduction. These batteries also show higher energy density and better cycling stability.
Science, this issue p.46
- Research Organization:
- Univ. of Maryland, College Park, MD (United States)
- Sponsoring Organization:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- DOE Contract Number:
- AR0000389;
- OSTI ID:
- 1848188
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6524 Vol. 371; ISSN 0036-8075
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
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