Lithium iron(ii) pyrophosphate as a cathode material: structure and transport studies†
Abstract
A single phase cathode material Li2FeP2O7 was synthesized by a solid state reaction using inexpensive precursors and optimization of the calcination conditions. Reitveld refinement of the XRD data reveals the value of Rwp and reduced-χ2 as 0.97% and 1.006, respectively. Impedance spectroscopy indicates an electronically dominated conduction mechanism with a conductivity of 3.4 × 10−9 S cm−1 at 303 K.