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141.
Jasmin S. Shaikh Rajendra C. Pawar Sawanta S. Mali Annnasaheb V. Moholkar J. H. Kim Pramod S. Patil 《Journal of Solid State Electrochemistry》2012,16(1):25-33
We report the synthesis of CuO-poly(acrylic) acid/CNT hybrid thin films by a cost-effective spin-coating technique for supercapacitor
application. Hybrid films were annealed at 300, 400, and 500 °C to study its effect on the supercapacitor behavior. X-ray
photoelectron spectroscopy and Fourier transform-infrared spectroscopy techniques were used for the phase identification and
determination of the organic component in the hybrid films, respectively. Surface morphology of the films was examined by
scanning electron microscopy and revealed the novel ring-like structures. The average diameter of the ring changes from 0.5
to 1.2 μm with increase in annealing temperature. Cyclic voltammetry is employed to estimate the specific capacitance (C
sp) of the films in 1 M H2SO4 electrolyte. It is observed that the C
sp increases from 188 to 258 Fg−1 with increase in annealing temperature. 相似文献
142.
A spectrophotometric method has been proposed for the determination of pesticides containing methylamine moiety. These pesticides afforded methylamine upon alkaline hydrolysis, which was subsequently reacted with ninhydrin in the presence of pyridine. The absorbance of the resulting blue-purple product was measured spectrophotometrically at 570 nm. The Beer??s law showed a linear relationship between absorbance and concentration of the pesticide in the range 0.04?C5.0 ??g/mL. The limit of detection and limit of quantification were 0.012 and 0.02 ??g/mL, respectively. The repeatability was 0.22 expressed as RSD. The performance of this newly developed method was compared with the established spectrophotometric methods for the determination of these pesticides. The method has been successfully applied to the evaluation of these pesticides in commercial pesticide formulation and to the determination of monocrotophos in fruit samples. 相似文献
143.
Tassilo M. F. Restle Lavinia Scherf Jasmin V. Dums Alexander G. Mutschke Robert J. Spranger Holger Kirchhain Antti J. Karttunen Leo van Wüllen Thomas F. Fässler 《Angewandte Chemie (International ed. in English)》2023,62(10):e202213962
All-solid-state batteries are promising candidates for safe energy-storage systems due to non-flammable solid electrolytes and the possibility to use metallic lithium as an anode. Thus, there is a challenge to design new solid electrolytes and to understand the principles of ion conduction on an atomic scale. We report on a new concept for compounds with high lithium ion mobility based on a rigid open-framework boron structure. The host–guest structure Li6B18(Li3N) comprises large hexagonal pores filled with Li7N] strands that represent a perfect cutout from the structure of α-Li3N. Variable-temperature 7Li NMR spectroscopy reveals a very high Li mobility in the template phase with a remarkably low activation energy below 19 kJ mol−1 and thus much lower than pristine Li3N. The formation of the solid solution of Li6B18(Li3N) and Li6B18(Li2O) over the complete compositional range allows the tuning of lithium defects in the template structure that is not possible for pristine Li3N and Li2O. 相似文献