C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 25/45 (2006.01) H01M 4/136 (2010.01) C01B 25/26 (2006.01) C01B 25/37 (2006.01) H01M 4/58 (2010.01)
Patent
CA 2755356
The invention relates to a method of preparing LiFePO4 having an olivine structure comprising: mixing stoichiometric proportions of a source of lithium, a source of iron, and a source of phosphorus to form a source mixture; heating the source mixture to a temperature and for a period of time sufficient to allow a solid--state reaction to occur so as to form LiFePO4 having an olivine structure. The invention also relates to a method of preparing a delithiated olivine FePO4 compound comprising: mixing stoichiometric proportions of a source of lithium, a source of iron, and a source of phosphorus to form a source mixture; heating the source mixture to a temperature and for a period of time sufficient to allow a solid-state reaction to occur so as to form LiFePO4 having an olivine structure; and chemically extracting lithium ions from the LiFePO4 to form the delithiated olivine FePO4 compound.
Goodenough John B.
Masquelier Christian
Nanjundaswamy K. S.
Padhi Akshaya
Hydro-Quebec
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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