The stretching vibration of v = o shifts to lower wavenumbers , which is contributed to the oet v : = o bonding interaction . the intercalation of peo effectively shields the electrostatic interaction between li + ions and v2o5 layers , resulting in the improvement of the cycling reversibility and stability of li + ions insertion / extraction in the interlayer of v2o5 xerogel and the improvement of electrochromic behavior of the films
12.
In this thesis , based on organic aerogel and porous silicon ( ps ) that are two types of materials in frontier field of materials science , carbon aerogel , carbon xerogel and free - standing porous silicon films were prepared and used as the anode materials for lithium ion batteries , and their performance of lithium ion storage and behavior of charge and discharge were studied . meanwhile , the effects of synthetic conditions on their performance as anode materials were also analysed
13.
( 1 ) carbon aerogel and xerogel were made from resorcinol - formaldehyde organic gels and used as the anode materials for lithium ion batteries . by discussing the influences of pyrolysis temperature , the level of the catalyst and the concentration of reactant in the preparation of carbon materials on their behavior of lithium ion storage , their performance of storing lithium ions and process of charge and discharge were studied in details . moreover , the relationship between the structure of carbon aerogel and xerogel and the performance of storing lithium ions was analysed , and the mechanism of the storage of lithium ions in this type of porous carbon materials based on organic gels was also dicussed simply
14.
Two kinds of n - substituted pyrrole ( trimethyl - ( 2 - pyrrol - l - yl - ethyl ) - ammonium iodide and 2 - ( 2 - pyrrol - 1 - yl - ethoxy ) - ethane - sulfonate sodium ) were synt hesized ; poly ( trimethyl - ( 2 - pyrrol - l - yl - ethyl ) - ammonium iodide ) / v2os nanocomposites were synthesized by two methods ( monomer in - situ intercalate polymerization and polymer intercalation in solvent ) . to fabricate vaos sol by melt quenching , oxygen top - blend technique was applied to improve oxygenic part - pressure , decrease the oxygenic anoxic and restrain the increase of v4 + ion when vos was melted . the xos xerogel prepared by the new technique had more complete structure than the vos xerogel which v20s powder was melted in the air
