One-step mechanical synthesis of LiFePO 4 /C composite granule under ambient atmosphere

Facile preparation of porous LiFePO4/C composite granules by mechanical process

“…By applying mechanical stresses such as compressing and shearing forces to the powder layer, the local solid-state reaction on the particle surface occurs instantaneously to form LiFePO 4 . The added carbon acts as an inhibitor on the iron oxidation [15]. On the other hand, the gases, mainly CO 2 , H 2 O and NH 3 , released by the decomposition of starting materials may be trapped in the formed LiFePO 4 particles because the formation reaction occurs instantaneously.…”

“…The discharge capacity at 0.1C rate was only 84 mA h g À1 , though it increased to 103 mA h g À1 by additional carbon coating [15]. One of the reasons for this poor performance seems to be its granule structure, especially the porosity.…”

“…Recently, we have reported the one-step synthesis of ideal LiFePO 4 /C composite granules by a mechanical process under ambient atmosphere [15]. By utilizing the mechanical technique using an attrition-type mill, LiFePO 4 was synthesized without atmosphere control and external heating.…”

A simple mechanical process to synthesize La0.6Sr0.4Co0.2Fe0.8O3 perovskite for solid oxide fuel cells cathode

“…Recently, we have successfully demonstrated the short-duration synthesis of LiCoO 2 [8], LiMnPO 4 [9], LiFePO 4 [10], and LiNi 0.5 Mn 1.5 O 4 [11] powders as cathode materials for lithium-ion batteries, by using an attrition-type mill without external heating. The driving force for the synthesis is mechanical energy, e.g., as compression and shearing forces applied to the powder layer.…”

Synthesis and electrochemical characterization of LiCo1/3Fe2/3PO4/C composite using nano CoFe2O4 as precursor

“…successfully commercialized due to its promising electrochemical properties, environmental friendliness and excellent safety [1,3,4]. However, single component LiFePO 4 suffers from the intrinsic low energy density due to its relatively low voltage plateau (3.4V vs. Li + /Li) and therefore accounts for only a comparatively small market.…”