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Title: Sodium Peroxide Dihydrate or Sodium Superoxide: The Importance of the Cell Configuration for Sodium-Oxygen Batteries

Journal Article · · Small Methods
 [1];  [2];  [3];  [4];  [5]; ORCiD logo [5]
  1. Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue Lemont IL 60439 USA; Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue Columbus OH 43210 USA
  2. Energy Systems Division, Argonne National Laboratory, 9700 South Cass Avenue Lemont IL 60439 USA
  3. X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue Lemont IL 60439 USA
  4. HIGP, University of Hawaii at Manoa, 1680 East-West Rd Honolulu HI 96822 USA
  5. Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue Lemont IL 60439 USA

In sodium–oxygen (Na–O2) batteries, multiple discharge products have been observed by different research groups. Given the fact that different materials, gas supplies, and cell configurations are used by different groups, it is a great challenge to draw a clear conclusion on the formation of the different products. Here, two different cell setups are used to investigate the cell chemistries of Na–O2 batteries. With the same materials and gas supplies, a peroxide-based product is observed in a glass chamber cell and a superoxide-based product is observed in a stainless-steel cell. Ex situ high-energy X-ray diffraction (HEXRD) and Raman spectroscopy are performed to investigate the structure and composition of the product. In addition, in situ XRD is used to investigate the structure evolution of the peroxide-based product. The findings highlight the importance of the cell design and emphasize the critical environment of the formation of the discharge products of Na–O2 batteries.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1395849
Journal Information:
Small Methods, Vol. 1, Issue 7; ISSN 2366-9608
Country of Publication:
United States
Language:
English

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