Abstract: A prismatic battery cell and method of making the same are disclosed. The prismatic battery cell comprises a container configured to accommodate the prismatic battery cell, including a positive electrode, a negative electrode an ionically conductive separator, and an electrolyte. The positive electrode comprises a lithium manganese iron phosphate active material combined with a conductive carbon additive and a binder. The prismatic battery cell further comprises a lid, a first busbar, a second busbar, a positive electrode terminal attached to the first busbar, and a negative electrode terminal attached to the second busbar.

Abstract: An LMFP particle is disclosed, the LMFP particle comprising active material decorated with an engineered coating material, the coating material comprising at least one material selected from a group comprising: ionic compounds of V5+; Mg2+; Ti4+; Zr4+; Nb5+; W6+; Cr6+; Mo6+; Al2O3; ZrOx; TiO2; Nb2O5; and WO3, and encapsulated in conductive carbon material; and binding material. An LMFP cathode is also disclosed, the LMFP cathode comprising active material, conductive carbon material; and engineered coating material decorated on the surface of the active material, the. A method for forming the engineered coating material is also disclosed.