Polymer coating of vanadium oxide nanowires to improve cathodic capacity in lithium batteries

Microtubular SnO2/V2O5 Composites Derived from Cellulose Substance as Cathode Materials of Lithium‐ion Batteries

“…Despite of the various three-dimensional spherical microstructures, V 2 O 5 microtubes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 constructed by nanosized V 2 O 5 particles have seldom been reported although tubular structure is also believed to be beneficial for the diffusion of electrolyte and the transport of electrons and lithium ions owing to its high surface area and porous structural feature. [29] On the other hand, the hybridization of V 2 O 5 with other conductive phases, including various carbonaceous substances, [30 À 33] metals, [34 À 37] polymers [38,39] and metal oxides, [17,20,40 À 42] is also expected to be an effective approach to achieve enhanced electrochemical properties. V 2 O 5 -based materials hybridized with different metal oxides, such as TiO 2 , [40] SiO 2 [41] and SnO 2 have been synthesized and used as cathode materials.…”

“…On the other hand, the hybridization of V 2 O 5 with other conductive phases, including various carbonaceous substances,− metals,− polymers, and metal oxides,,,− is also expected to be an effective approach to achieve enhanced electrochemical properties. V 2 O 5 ‐based materials hybridized with different metal oxides, such as TiO 2 , SiO 2 and SnO 2 have been synthesized and used as cathode materials.…”

Vanadium-oxide-based electrode materials for Li-ion batteries

“…[187] Therefore, designing hybrid composites of V2O5 with conducting polymers can realize great improvements in the battery performance of V2O5 for LIBs. There are three conducting polymers widely used in developing V2O5-based cathode materials, such as polypyrrole (PPy), [188][189][190][191] polyaniline (PANI), [192][193][194] and polythiophene, [195][196][197][198] The easy synthesis and the commercial availability of both polymers and monomers are the driving forces for the extensive research on these conducting polymers.…”

“…A modified vacuum filtration technique was used to obtain a soft and robust thin film with a thickness of about 10 μm ( ZrO2-doped V2O5 particles 1.5−4.0 222 294 50 − − [205] Mn-doped V2O5 flakes 2.0−4.0 201 300 50 171 1.50 [206] Sn-doped V2O5 [195] PANI-coated V2O5 nanowires 1.5−4.0 95 44 50 125 0.44 [192] PPy-coated V2O5 nanowires 1.5−4.0 188 40 100 − − [189] PPy-coated V2O5 rods 2.0−4.0 170 7 100 − − [188] Modifying V2O5 nanostructures with carbon materials, metal doping, or polymer coating is the major direction to produce high-performance V2O5 cathode materials. …”

“…Gittleson et al incorporated polyaniline coating with V2O5 nanowires to form V2O5/PANI core/shell composites as cathode materials for LIBs. [192] The V2O5 nanowires were obtained by a hydrothermal method, which was further coated with PANI by in situ polymerization of aniline. (1 C), the 51% PANI composite still preserved a capacity with 57% higher than that of the pure V2O5.…”