Author/Authors :
Kosova، نويسنده , , N.V. and Devyatkina، نويسنده , , E.T. and Ancharov، نويسنده , , A.I. and Markov، نويسنده , , A.V. and Karnaushenko، نويسنده , , D.D. and Makukha، نويسنده , , V.K.، نويسنده ,
Abstract :
In situ synchrotron diffraction study of phase transformations under cycling of nano-sized phase-homogeneous and carbon-coated LixFe0.5Mn0.5PO4 prepared by mechanochemically assisted carbothermal reduction route demonstrates the occurrence of single-phase reactions in a wide intermediate region upon delithiation and lithiation (0.4 < x < 0.7) and additionally in a whole Fe2 +/Fe3 + region on lithiation (0.7 < x < 1). It is suggested that single-phase reactions in LixFe1-yMnyPO4 stem from size and surface effects and from the character of the Fe/Mn distribution depending on the synthetic method.
Keywords :
Mechanical activation , In situ synchrotron diffraction , LiFe0.5Mn0.5PO4 , cycling
