Characteristics of mechanochemically prepared host–guest hybrid nanocomposites of vanadium oxide and conducting polymers

Effect of the Composition and Post-Synthesis Heat Treatment on the Electrochemical Characteristics of Polypyrrole/V2O5 Nanocomposites Prepared by a Mechanochemical Method

“…Interest in HNC has arisen since these materials have functional characteristics unachievable for massive or microstructurized analogs. Since LIB are used in an enormous number of devices, the development of efficient nanostructurized electrode materials for them is currently an important area of research [9][10][11][12][13][14][15][16][17][18][19][20].HNC derived from transition metal compounds in the nanosized state and conducting polymers (CP), which may have one of two structural types, are promising cathode materials for LIB. The first structural type is based on the insertion of 0040-5760/15/5103-0163…”

“…Several methods are now used to prepare these hybrid nanocomposites with host-guest structure [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In our view, the most attractive of them is a mechanochemical method combining various advantages such as good reproducibility, elimination of the necessity of using liquid media, and lack of ecological damage [21,22].…”

“…In our view, the most attractive of them is a mechanochemical method combining various advantages such as good reproducibility, elimination of the necessity of using liquid media, and lack of ecological damage [21,22]. By this method, we have obtained two-and three-component nanocomposites derived from V 2 O 5 xerogel and various CP [12][13][14], which display prolonged stable charge-discharge cycling with high specific capacity, as active components of LIB cathodes. The most promising of these materials were nanocomposites derived from polypyrrole (PPy 0.1 V 2 O 5 ) with initial specific discharge capacity~300 and 200 mA·h/g after 100 complete charge-discharge cycles in the potential range 2.0-4.0 V rel.…”

“…The most promising of these materials were nanocomposites derived from polypyrrole (PPy 0.1 V 2 O 5 ) with initial specific discharge capacity~300 and 200 mA·h/g after 100 complete charge-discharge cycles in the potential range 2.0-4.0 V rel. Li/Li + [12,13].…”

“…Since the formation of CP molecules within interlayer galleries of the V 2 O 5 usually takes place due to oxidative intercalation polymerization of monomers and is accompanied by partial reduction of the inorganic matrix [12][13][14], we might have assumed that the capacity characteristics of such HNC would be markedly improved by means of post-synthesis enhancement of the oxidation of the inorganic component.…”