Developing advanced and reliable electrical energy storage systems is critical to fulfill global energy demands and stimulate the growth of renewable energy resources. Sodium metal halide batteries have been under serious consideration as a low cost alternative energy storage device for stationary energy storage systems. Yet, there are number of challenges to overcome for successful market penetration, such as high operating temperature and hermetic sealing of batteries that trigger an expensive manufacturing process. Here we demonstrate simple, economical, and practical sealing technologies for Na-NiCl2 batteries operated at an intermediate temperature of 190°C. Conventional polymers are implemented in planar Na-NiCl2 batteries after a prescreening test, and their excellent compatibilities and durability are demonstrated by stable electrochemical performance for more than 300 cycles. The sealing methods developed in this work will be highly beneficial and feasible in improvement of battery cycle life and reducing manufacturing cost for other types of Na-based batteries at elevated temperatures (
Revised: March 14, 2017 |
Published: April 30, 2017
Citation
Chang H., X. Lu, J.F. Bonnett, N.L. Canfield, S. Son, Y. Park, and K. Jung, et al. 2017.Development of Intermediate Temperature Sodium Nickel Chloride Rechargeable Batteries using Conventional Polymer Sealing Technologies.Journal of Power Sources 348.PNNL-ACT-SA-10210.doi:10.1016/j.jpowsour.2017.02.059