A thin polymer shell helps V2O5 a lot. Short V2O5 nanobelts are grown directly on 3D graphite foam as a lithium-ion battery (LIB) cathode material. A further coating of a poly(3,4-ethylenedioxythiophene) (PEDOT) thin shell is the key to the high performance. An excellent high-rate capability and ultrastable cycling up to 1000 cycles are demonstrated.

V(2)O(5) nanofilms (NFs) uniformly distributed on N-doped carbon nanotubes (CNTs) exhibit significantly stable capacitive performance; the synthesized composites are promising as an instantaneous power supply in consumer electronics or electrical vehicles.

Here, we show that a new class of glasses composed of heavy metal oxides involving transition metals (V2O5-TeO2) can surprisingly be designed from very basic tools using topology and rigidity of their underlying molecular networks. When investigated as a function of composition, such glasses display abrupt changes in network packing and enthalpy of relaxation at Tg, underscoring presence of fle...

A systematic first-principles evaluation of the insertion behavior of multi-valent cations in orthorhombic V2O5 is performed. Layer spacing, voltage, phase stability, and ion mobility are computed for Li(+), Mg(2+), Zn(2+), Ca(2+), and Al(3+) intercalation in the α and δ polymorphs.

2014 We have established the existence of a characteristic energy (0.0013 eV) in undoped crystalline V2O5, by measuring, between 1.3 K and 50 K, the relaxation time of the paramagnetic defect detected at g = 2. In order to interpret this result, we have examined the different models which have been proposed in the past for this defect, and which all imply the existence of a V9+2 molecular ion; ...

Mechanically robust battery electrodes are desired for applications in wearable devices, flexible displays, and structural energy and power. In this regard, the challenge is to balance mechanical and electrochemical properties in materials that are inherently brittle. Here, we demonstrate a unique water-based self-assembly approach that incorporates a diblock copolymer bearing electron- and ion...

A novel VN/C nanostructure consisting of VN nanoparticles and graphite-dominant carbon layers is synthesized by nitridation of V2O5 using melamine as reductant under inert atmosphere. High crystalline VN nanoparticles are observed to be uniformly distributed in carbon layers with an average size of ca13.45 nm. Moreover, the electrocatalytic performance of VN/C towards oxygen reduction reaction ...

Mesoporous single-crystalline V2O5 nanorods assembled into novel hollow microspheres have been synthesized as cathode materials for lithium-ion batteries by a simple solvothermal treatment of NH4VO3 and ethylene glycol with subsequent annealing in air at 400 °C, which delivered a very high reversible capacity of 145.8 mA h g(-1) at 2.5-4.0 V (vs. theoretical value: 147 mA h g(-1)) with much imp...