An advanced Na-NiCl₂ battery using bi-layer (dense/micro-porous) β"-alumina solid-state electrolytes

Journal Article · Wed Aug 01 00:00:00 EDT 2018 · Journal of Power Sources

DOI:https://doi.org/10.1016/j.jpowsour.2018.06.039· OSTI ID:1491733

Jung, Keeyoung ; Chang, Hee-Jung; Bonnett, Jeffery F.; Canfield, Nathan L.; Sprenkle, Vincent L.; Li, Guosheng

We describe an advanced Na-metal halide (Na-MH) battery operating at 190°C using a bi-layer (dense/porous layers) β"-alumina solid-state electrolyte (BASE). The novel design of the bi-layer BASE promotes high Na-ion transportation by reducing the Na⁺ ion path length. The excellent battery performances are achieved with a stable capacity retention of 350 Wh/kg up to >350 cycles (~ 6 months). Moreover, owing to the thin dense layer of BASE, the round trip energy efficiency (or discharging energy density) of the tested battery shows an ~8% increase compared to that of state of the art Na-MH battery reported in the literature.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1491733
• Report Number(s): PNNL-SA-132030
• Journal Information: Journal of Power Sources, Vol. 396, Issue C; ISSN 0378-7753
• Publisher: Elsevier
• Country of Publication: United States
• Language: English