Amorphous 3Fe2O3*2P2O5*10H2O was prepared by oxidation of iron(II) phosphate, obtained by spontaneous precipitation from iron(II) and phosphate aqueous solution, by heating in air at 100°C. The material was characterized by thermal analysis, Mossbauer spectroscopy, X-ray power diffraction, and scanning electron micrograph analysis. the material, tested as cathode in a nonaqueous lithium cell, exhibited a specific capacity of about 140 mAh/g at a current density of 25 mA/g. The utization was reduced to about 76% by a tenfold increase of the discharge current. It shoved cyclability. More that 1000 cycles were performed at about 50 % of depth of discharge, with a capacity fade lower than 0.025%.
Synthesis and Characterization of Amorphous 3Fe2O3*2P2O5*10H2O and Its Electrode Performance in Lithium Batteries / Pasquali, Mauro; P. P., Prosini; L., Cianchi; G., Spina; M., Lisi; S., Scaccia; M., Carewska; C., Minarini. - In: JOURNAL OF THE ELECTROCHEMICAL SOCIETY. - ISSN 0013-4651. - STAMPA. - 148:(2001), pp. A1125-A1129. [10.1149/1.1400120]
Synthesis and Characterization of Amorphous 3Fe2O3*2P2O5*10H2O and Its Electrode Performance in Lithium Batteries
PASQUALI, Mauro;
2001
Abstract
Amorphous 3Fe2O3*2P2O5*10H2O was prepared by oxidation of iron(II) phosphate, obtained by spontaneous precipitation from iron(II) and phosphate aqueous solution, by heating in air at 100°C. The material was characterized by thermal analysis, Mossbauer spectroscopy, X-ray power diffraction, and scanning electron micrograph analysis. the material, tested as cathode in a nonaqueous lithium cell, exhibited a specific capacity of about 140 mAh/g at a current density of 25 mA/g. The utization was reduced to about 76% by a tenfold increase of the discharge current. It shoved cyclability. More that 1000 cycles were performed at about 50 % of depth of discharge, with a capacity fade lower than 0.025%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
