Journal
CHEMELECTROCHEM
Volume 5, Issue 4, Pages 589-592Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201701269
Keywords
Zn-air batteries; bipolar membranes; electrochemical neutralization energy; asymmetric electrolytes
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Funding
- Fujian Science and Technology Key Project [2016H0043]
- FJIRSM-CAS
- The Recruitment Program of Global Youth Experts
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Zn-air batteries have attracted enormous research interest, driven by the promise for vehicle propulsion owing to their advantages of high-level safety, low cost, and high specific energy density. Here, we report an asymmetric-electrolyte Zn-air battery with acid catholyte and alkaline anolyte separated by a bipolar membrane. We demonstrate that the as-designed Zn-air battery, thanks to the as-formed concentration cell, can deliver a maximum power density of 380 mW cm(-2) and a specific energy density of 1522 Wh kg(-1) with an open-circuit voltage of 2.25 V. The as-proposed Zn-air battery performance is superior to the conventional Zn-air battery in terms of these pivotal performance parameters.
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