Fig. 1: Electrochemical performance of NMF//NTP coin cells in the range of 0.5 to 2.2 V.
From: Alkaline-based aqueous sodium-ion batteries for large-scale energy storage

a Design concept for the alkaline aqueous battery. b Cycling performance for three cells at 1 C. c Cycling performance for NMF//NTP cell with Ni/C coating at 0.5 C at a low temperature of −30 °C. d Long-term cycling stability for NMF//NTP full cell with Ni/C coating at 10 C, 1 C = 118 mA g−1, based on NMF.