The smaller size of LMFP is likely reflective of the reduced ionic conductivity associated with the addition of Mn, necessitating shorter Li diffusion distances. Phosphate materials are typically coated with a thin (< 5 nm) carbon layer to further aid electronic conductivity. The outlier here is the LMFP80 material, whereby the manufacturer has elected to arrange the smaller single crystals in porous large secondary particles, maintaining low required Li + diffusion distances and avoiding agglomeration of small crystals during mixing. XRF analysis of the LFP and LMFP60 powders (Table ) revealed significant Mg content (0.24 %) in LMFP60, along with several other dopants such as Ti and Nb, highlighting the adding material complexity necessary when moving from LFP to LMFP. The addition of Mg is widely studied and known to enhance Li+ diffusion through mitigation of the Jahn-Teller effect, while a Nb can improve particle morphology and electronic conductivity. The LMFP/NMC blend material consisted of a mixture of large 10 -20 µm polycrystalline NMC811 particles and LMFP60.