Facile synthesis of V
 2
 O
 3
 /C composite and the effect of V
 2
 O
 3
 and V
 2
 O
 3
 /C on decomposition of ammonium perchlorate

Materials Science-Poland

Tan

Meng

2015

Self Cite

The influence of vanadium dioxide VO 2 (B) on thermal decomposition of ammonium perchlorate (AP) has not been reported before. In this contribution, the effect of VO 2 (B) nanobelts on the thermal decomposition of AP was investigated by the ThermoGravimetric Analysis and Differential Thermal Analysis (TG/DTA). VO 2 (B) nanobelts were hydrothermally prepared using peroxovanadium (V) complexes, ethanol and water as starting materials. The thermal decomposition temperatures of AP in the presence of 1 wt.%, 3 wt.% and 6 wt.% of as-obtained VO 2 (B) nanobelts were reduced by 39°C, 62°C and 74°C, respectively. The results indicated that VO 2 (B) nanobelts had a great influence on the thermal decomposition temperature of AP. Furthermore, the influence of the corresponding V 2 O 5 , which was obtained by thermal treatment of VO 2 (B) nanobelts, on the thermal decomposition of AP was also investigated. The results showed that VO 2 (B) nanobelts had a greater influence on the thermal decomposition temperature of AP than that of V 2 O 5 .

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The influence of VO₂(B) nanobelts on thermal decomposition of ammonium perchlorate

Materials Science-Poland

Tan

Meng

2015

Self Cite

“…41‐1426) due to reduction of V 2 O 5 by organic amines during hydrothermal treatment ,. The Fourier transform infrared spectroscopy (FTIR) in Figure S1 reveals the presence of N−H bonds (3060 cm −1 ), C=C stretching mode of the quinoid ring (1585 cm −1 ) and benzenoid ring (1488 cm −1 ), as well as V−O,, suggesting the formation of inorganic‐organic VO x /3‐phenylpropylamine. Figure c and Figure S2a depict the typical scanning electron microscope (SEM) images of the hydrothermal product disclosing a nanobelt morphology with a width of 300–600 nm and thickness of 20–40 nm.…”

Section: Resultsmentioning

confidence: 99%

In situ Synthesis of V₂O₃‐Intercalated N‐doped Graphene Nanobelts from VO_x‐Amine Hybrid as High‐Performance Anode Material for Alkali‐Ion Batteries

Liao

et al. 2018

ChemElectroChem

V2O3 is a promising anode material for lithium‐ and sodium‐ion batteries due to its high theoretical capacity and natural abundance. However, the low conductivity, sluggish ion reaction kinetics, and large volume change limit the rate and cycling stability in batteries. In this work, the V2O3‐nanoparticles‐intercalated N‐doped graphene (V2O3/NG) hybrid is prepared by one‐step controlled pyrolysis of inorganic‐organic hybrid VOx/3‐phenylpropylamine nanobelts under Ar. The intercalated 3‐phenylpropylamine molecules are carbonized in situ into the NG layers and the sandwiched VOx layers are converted into 10–20 nm V2O3 nanoparticles. The V2O3/NG nanobelts possess well‐defined 0D‐in‐1D morphology and excellent electrochemical performance such as high reversible capacities of 435 mAh g−1 at 100 mA g−1 over 250 cycles for Li‐ion storage and 154 mAh g−1 at 500 mA g−1 over 500 cycles for Na‐ion storage. The well‐defined 0D‐in‐1D hybrid V2O3/NG structure with small V2O3 nanoparticles, interconnected nanochannels, and conductive NG layers offer abundant electrochemical active sites leading to fast Li+ and electron transport and excellent alkali‐ion storage.

“…Vanadium (III) oxide (denoted as V 2 O 3 ) displays a fully reversible temperature‐induced metal‐to‐insulator transition (MIT) between rhombohedral and monoclinic phases . Thus, the previous reports mainly focus on its synthesis, characterization and MIT property . Recently, V 2 O 3 ‐based materials applied to Li‐ion batteries have been paid increasing attention .…”

Section: Introductionmentioning

confidence: 99%

Designed Synthesis and Supercapacitor Electrode of V₂O₃@C Core‐shell Structured Nanorods with Excellent Pseudo‐capacitance in Na₂SO₄ Neutral Electrolyte

2018

ChemistrySelect

Self Cite

V2O3@C core‐shell structured nanorods (VCNR) were successfully prepared using V2O5 nanowires and glucose via a facile hydrothermal route combination of calcination. VCNR comprised of core‐shell structures with V2O3 cores and amorphous carbon shells. Electrochemical properties of VCNR as supercapacitor electrodes were studied in Na2SO4 neutral electrolyte. Results demonstrated that VCNR featured capacitive behavior originating from pseudocapacitance. Specific capacitances of VCNR at 0.5, 1, 2, 5 and 10 A⋅g−1 were achieved to 219, 192, 148, 127 and 119 F⋅g−1, respectively, and VCNR displayed higher specific capacitance than the values of carbon spheres and V2O3 particles. Maximum specific capacitance of VCNR reached 219 F⋅g−1 at 0.5 A⋅g−1 in present study, which was superior to the reported values of V2O3‐based materials and VO2‐based materials. Capacitance retention of VCNR was 100% after 700 cycles and 66% after 1000 cycles. Findings in present study proved that VCNR could be promising candidate as an ideal material for supercapacitors’ electrode.