Rechargeable Zn-air batteries: progress in electrolyte development and cell configuration advancement

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2015.02.114
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TypeArticle
Journal titleJournal of Power Sources
ISSN0378-7753
Volume283
Pages358371
SubjectZn-air batteries; aqueous electrolytes; non-aqueous electrolytes; cell assembly
AbstractZn-air batteries, which are cost-effective and have high energy density, are promising energy storage devices for renewable energy and power sources for electric transportation. Nevertheless, limited charge and discharge cycles and low round-trip efficiency have long been barriers preventing the large-scale deployment of Zn-air batteries in the marketplace. Technology advancements for each battery component and the whole battery/cell assembly are being pursued, with some key milestones reached during the past 20 years. As an example, commercial Zn-air battery products with long lifetimes and high energy efficiencies are being considered for grid-scale energy storage and for automotive markets. In this review, we present our perspectives on improvements in Zn-air battery technology through the exploration and utilization of different electrolyte systems. Recent studies ranging from aqueous electrolytes to nonaqueous electrolytes, including solid polymer electrolytes and ionic liquids, as well as hybrid electrolyte systems adopted in Zn-air batteries have been evaluated. Understanding the benefits and drawbacks of each electrolyte, as well as the fundamental electrochemistry of Zn and air electrodes in different electrolytes, are the focus of this paper. Further consideration is given to detailed Zn-air battery configurations that have been studied and applied in commercial or nearing commercial products, with the purpose of exposing state-of-the-art technology innovations and providing insights into future advancements.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
NPARC number23001595
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Record identifier6aec8404-3e2f-4b41-be76-e1df52eea46d
Record created2017-03-09
Record modified2017-03-09
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