Table 4 Re-calculated stoichiometry (see text) and absolute and percentage of Fe2+ and Fe3+ in the orthosilicate phase.

From: New materials for Li-ion batteries: synthesis and spectroscopic characterization of Li2(FeMnCo)SiO4 cathode materials

Sample

Orthosilicate re-calculated stoichiometry

Fe2+ and Fe3+ amount in the formula

Fe2+ and Fe3+ % on the total orthosilicate amount

Fe08

Li2Fe0.72Co0.1Mn0.1SiO4

Fe2+0.653Fe3+0.067

Fe2+ 90.7 Fe3+ 9.3

Fe06

Li2Fe0.57Co0.17Mn0.2SiO4

Fe2+0.489Fe3+0.081

Fe2+ 85.7 Fe3+ 14.3

Fe06-glu

Li2Fe0.5Co0.2Mn0.2SiO4

Fe2+0.399Fe3+0.101

Fe2+ 79.8 Fe3+ 20.2

Fe04

Li2Fe0.4Co0.23Mn0.29SiO4

Fe2+0.324Fe3+0.076

Fe2+ 81.0 Fe3+ 19.0

Fe02

Li2Fe0.2Co0.36Mn0.4SiO4

Fe2+0.116Fe3+0.084

Fe2+ 58.0 Fe3+ 42.0

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