Fig. 3: Electrochemical performance of ASSNIBs using NHOC SSEs.
From: A family of dual-anion-based sodium superionic conductors for all-solid-state sodium-ion batteries
a, Schematic diagram of NMOC-based ASSNIBs. CNTs, carbon nanotubes. b, Initial galvanostatic intermittent titration technique charge and discharge curves of NHOC-based ASSNIB at 0.1 C. The blue and green lines represent charge and discharge profiles, respectively. The red balls represent the charge and discharge open circuit voltage. c, Na+ diffusion coefficients (DNa+) at different electrochemical states of NHOC-based ASSNIB. d,e, The second charge and discharge curves (d) and rate capability (e) of the NHOC-based ASSNIB under various current densities at room temperature. f,g, Galvanostatic voltage profiles (f) and specific capacities (g) of ASSNIBs as a function of cycle number, running at 0.2 C and room temperature (r.t.). All the NHOC-based ASSNIBs were tested in the voltage range of 2.0–4.0 V versus Na+/Na15Sn4.
