Fig. 1: The structure analysis of NaFe[O3PCH(OH)CO2].
From: Layered-columnar cathode materials for sodium-ion batteries
a The layered-columnar structure with 2D grid-like channels composed of metal and organic phosphoric acid. b Rietveld refinement of powder XRD Cu Kα. (λCu-Kα = 1.54056 Å) for NaFe[O3PCH(OH)CO2] sample, experimental data in black dots, calculated curve in red and difference curve in olive. c The crystal structure of NaFe[O3PCH(OH)CO2] along (010) direction. d Comparison of Fourier Transform Infrared Spectroscopy (FTIR) of NaFe[O3PCH(OH)CO2] powder with NaFe[O3PCH(OH)CO2] electrode. High-resolution X-ray Photoelectron Spectroscopy (XPS) of e. Fe 3 d.
