Ammonium manganese iron phosphate and lithium manganese iron phosphate, and preparation method and application thereof

Abstract

The present application relates to ammonium manganese iron phosphate and lithium manganese iron phosphate, and preparation method and application thereof. The ammonium manganese iron phosphate has a chemical formula of (NH4)(3-2x-2y)FexMnyPO4·H2O, where 0<x≤0.5, x+y<1, a ratio of the diffraction peak area of (010) crystal plane to that of (121) crystal plane is less than 1.40, and the ammonium manganese iron phosphate is free of SO42−, Cl−, Na+, and K+, or the ammonium manganese iron phosphate includes at least one impurity ion of SO42−, Cl−, Na+, or K+, with a concentration of any one impurity ion in the ammonium manganese iron phosphate being less than 500 ppm.

Dependencies are inferred from the claim text.