Atomic ratios of Li : Fe in the as-synthesized samples, as determined by proton induced gamma emission (PIGE) technique (for Li) and ICP-OES (for iron). Error in determination of Li and Fe concentration was 0.4–0.6% and 5%, respectively.

	Nominal composition	Li : Fe (atomic ratio)
Sample A	LiFePO4	0.96 : 1
Sample B	Li1.02FePO4	0.97 : 1
Sample C	Li1.05FePO4	1.02 : 1
Sample D	Li1.1FePO4	1.16 : 1