LiFePO4 synthesis from Fe(NO3)3 · 9H2O yield?

02 February 2020 1 2K Report

I'm trying to obtain LiFePO4 from this reaction:

Fe(NO3)3 · 9H2O + H3PO4 --> FePO4 (prec.) + 3 HNO3

However, the FePO4 precipitate formed after is really low, with >20% yield.

Does anyone knows the right parameters or the yield of the reaction?

In my case, it was under vigorous stirring and 50ºC, with pH = 2 and control of the concentration of nitrate solution (1M) and H3PO4 (1M)

Frank T. Edelmann

Hi Arturo Santos, please find attached a Ph.D. thesis describing in detail the chemistry of LiFePO4 and its synthesis rom various iron and lithium precursors. Although it is written in German, the equations are clear and you can check out the appropriate references. You can find detailed descriptions of the synthetic procedures on pages 160/161. Good luck!

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