Fig. 5From: Statistical optimization of amorphous iron phosphate: inorganic sol–gel synthesis-sodium potential insertionVariations of \(\frac{{{\text{dpH}}}}{{{\text{d}}T}}\,in\, function\, of\, {\text{pH}}\) obtained for iron phosphate at m = 0.75, 1.25 and 2.5 g/LBack to article page