Synthesis and electrochemical properties of Li_(1-x)V_xCr_yFe_(1-x)PO_4/C as a cathode material

Composites Li1-xVxCryFe1-yPO4/C（x=0.01, 0.02; y = 0.01, 0.02） were synthesized by solid-state reaction method. The influence of the content of doping vanadium and chromium on the structure of Li1-xVxCryFe1-yPO4/C was investigated by XRD, while the morphology of powders was observed by SEM. The investigation of the electrochemical performances showed that the Li0.99V0.01Cr0.02Fe0.98PO4/C material has a higher capacity. At 0.1 C discharging rate, it is capable of delivering reversible specific capacity of 163.8 mAh/g with fairly stable cycleability.

Synthesis and Absorption Properties of New Na Specific Adsorbent Li_(1+x)Al_xTi_(2-x)(PO_4)_3

A new kind of adsorbent Li（1＋x）AlxTi（2-x）（PO4）3 was synthesized by solid state reaction method. The influence of the content of doping aluminum on the adsorbent Li（1＋x）AlxTi（2-x）（PO4）3 was investigated by XRD, while the morphology of powders was observed by SEM. The investigation of the adsorption properties showed that the adsorbent can selectively adsorb sodium with the adsorption capacity of 11.76 mg/g. The optimum conditions of adsorption are at pH 10.0-11.0 in LiCl solution.