Conversely, LMFP materials exhibited some capacity loss (2.7 % in the case of LMFP60 and 4.8 % for LMFP80). The added capacity loss experienced by the LMFP materials over LFP can be attributed to Mn dissolution and resultant poisoning of the anode. Analysis of the energy density decay is in fact more meaningful here, as it will also account for any reduction in average discharge voltage brought about by growing heterogeneity and/or polarisation in the LMFP cathodes. This voltage decay is visible when discharge profiles for cycle 1 and cycle 100 are examined (Figure ), whereby the average discharge voltage of LMFP60 decays from 3.58 V to 3.56 V, and that of LMFP80 decays from 3.71 V to 3.68 V.