Journal
NANO ENERGY
Volume 30, Issue -, Pages 825-830Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2016.09.013
Keywords
Concentrated electrolytes; Solid-electrolyte interface; Sodium metal batteries
Categories
Funding
- Laboratory Directed Research and Development Program of PNNL
- Joint Center for Energy Storage Research, an Energy Innovation Hub - U. S. Department of Energy (DOE), Office of Science, Basic Energy Sciences
- DOE's Office of Biological and Environmental Research (BER)
- U.S. Department of Energy's (DOE's) Office of Electricity Delivery & Energy Reliability [57558]
- DOE [DE-AC05-76RLO1830]
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Rechargeable batteries based upon sodium (Na+) cations are at the core of many new battery chemistries beyond Li-ion batteries. Rather than using carbon or alloy-based anodes, the direct utilization of solid sodium metal as an anode would be highly advantageous, but its use has been highly problematic due to its high reactivity. In this work, it is demonstrated that, by tailoring the electrolyte formulation, solid Na metal can be electrochemically plated/stripped at ambient temperature with high efficiency (> 99%) on both copper and inexpensive aluminum current collectors thereby enabling a shift in focus to new battery chemical couples based upon Na metal operating at ambient temperature. These highly concentrated electrolytes have enabled excellent cycling stability of Na metal batteries using Na metal anode and Na3V2(PO4)(3) cathode at high rates with very high efficiency. (C) 2016 Elsevier Ltd. All rights reserved.
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