An Electrochemical Study on the Cathode of the Intermediate Temperature Tubular Sodium-Sulfur (NaS) Battery

TitleAn Electrochemical Study on the Cathode of the Intermediate Temperature Tubular Sodium-Sulfur (NaS) Battery
Publication TypeJournal Article
Year of Publication2019
AuthorsG. Nikiforidis, G.J Jongerden, E.F Jongerden, M.CM van de Sanden, M.N Tsampas
JournalJournal of the Electrochemical Society
Volume166
Pagination A135-A142
Date Published02/2019
Abstract

The development of low-cost energy storage schemes is imminent in light of the ever-growing demand of electricity. Sodium-sulfur (NaS) batteries offer low-cost technology for energy storage applications due to the intrinsically high capacities of elemental sodium and sulfur as well as their abundant resources. Operating this battery technology on the intermediate range (130-200 degrees C) can lead to lower material costs, mitigate thermal management and safety issues and enhance cycle life. Herein, an electrochemical study on the cathode of the IT NaS cell is performed at 150 degrees C and a concentration range of 1.5 to 3 M sodium pentasulfide dissolved in tetraglyme, showing a robust long term performance (42 days of continuous cycling) with a volumetric energy density of 83 Wh L-1. Most importantly, the cell was eligible for a tenfold volume scale-up considerably enhancing its capacity (790 mAh) but in the same time somewhat hindered by mass transport, especially during the end of the discharge process as manifested by electrochemical impedance spectroscopy.

DOI10.1149/2.0491902jes
Division

MaSF

Department

CEPEA

PID

7b1735813fbc731e37d628172da99ad7

Alternate TitleJ. Electrochem. Soc.

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