02392nas a2200253 4500008004100000022001400041245010600055210006900161260007300230300001200303490000700315520145300322653003101775653002801806653002201834653002201856653002001878100002901898700001801927700001401945700002801959700002601987856012502013 2007 eng d a1387-181100aSynthesis and characterization of mesoporous carbon through inexpensive mesoporous silica as template0 aSynthesis and characterization of mesoporous carbon through inex aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN a189-1990 v983 a

Mesoporous silica materials have been synthesized through sol-gel reaction using inexpensive sodium silicate as source of silica and low cost hydroxy carboxylic acid compounds as templates/pore forming agents. The material measured surface area of 1014 m(2)/g, pore diameter of 65 angstrom and pore volume of 1.4 cc/g when parameters like time and temperature of synthesis along with mole ratio of TA/SiO(2) were optimized. Here TA stands for tartaric acid. Carbonization of sucrose inside the pores of above silica material at 900 degrees C followed by removal of silica framework using aqueous ethanoic solution of NaOH gave rise to mesoporous carbon material. The resulting materials were characterized by N(2)-sorption, FTIR spectroscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, thermal analysis and cyclic voltammetry. Three dimensional interconnecting wormhole channel arrangement of mesoporous silica template leads to mesoporous carbon replica with surface area of 1200 m(2)/g. X-ray photoelectron spectroscopic study (XPS) of the mesoporous carbon material shows the concentration of carbon atom in the range of 97-98% with 1-2% oxygen and negligible amount of silica. The electrochemical double layer capacitance behavior of carbon material with the specific capacitance value of 88.0 F/g at the scan rate of 1 mV/s appears to be promising. (C) 2006 Elsevier Inc. All rights reserved.

10aElectrochemical properties10ahydroxy carboxylic acid10amesoporous carbon10aMesoporous silica10asodium silicate1 aKarandikar, Prashant, R.1 aPatil, K., R.1 aMitra, A.1 aKakade, Bhalchandra, A.1 aChandwadkar, Asha, J. uhttp://library.ncl.res.in/content/synthesis-and-characterization-mesoporous-carbon-through-inexpensive-mesoporous-silica01850nas a2200253 4500008004100000022001400041245011800055210006900173260010600242300001400348490000700362520087100369653003101240653002801271653002201299653002201321653002201343100002401365700002201389700002101411700001801432700002201450856012401472 2008 eng d a0025-540800aPreparation and electrochemical characterization of lithium cobalt oxide nanoparticles by modified sol-gel method0 aPreparation and electrochemical characterization of lithium coba aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAUG a2497-25030 v433 a

Uniformly distributed nanoparticles of LiCoO2 have been synthesized through the simple sol-gel method in presence of neutral surfactant (Tween-80). The powders were characterized by X-ray diffractometry, transmission electron microscopy and electrochemical method including charge-discharge cycling performance. The powder calcined at a temperature of 900 degrees C for 5 h shows pure phase layered LiCoO2. The results show that the particle size is reduced in presence of surfactant as compared to normal sol-gel method. Also, the sample prepared in presence of surfactant and calcined at 900 degrees C for 5 h shows the highest initial discharge capacity (106 mAh g(-1)) with good cycling stability as compared to the sample prepared without surfactant which shows the specific discharge capacity of 50 mAh g(-1). (C) 2007 Elsevier Ltd. All rights reserved.

10aElectrochemical properties10aintercalation reactions10aLayered compounds10aSol-gel chemistry10aX-ray diffraction1 aKhomane, Ramdas, B.1 aAgrawal, Amit, C.1 aKulkarni, B., D.1 aGopukumar, S.1 aSivashanmugam, A. uhttp://library.ncl.res.in/content/preparation-and-electrochemical-characterization-lithium-cobalt-oxide-nanoparticles-002012nas a2200229 4500008004100000022001400041245011800055210006900173260010600242300001400348490000700362520110200369653002301471653003101494653001101525653003101536100002401567700001801591700001801609700002601627856012901653 2012 eng d a0025-540800aNovel microwave assisted sol-gel synthesis (MW-SGS) and electrochromic performance of petal like h-WO3 thin films0 aNovel microwave assisted solgel synthesis MWSGS and electrochrom aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJUL a1787-17930 v473 a

Use of domestic microwave oven is first time employed for chemical deposition of nanocrystalline hexagonal WO3 (h-WO3) thin films. Low cost precursors like sodium tungstate, hydrochloric acid, oxalic acid and potassium sulfate signifies cost effectiveness of this thin film fabrication route. Scanning electron microscopy images reveal formation of petal like nanodisks. A number of analytical techniques were used to characterize the WO3 petal like nanodisks, including X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX). X-ray photoelectron spectroscopy, FT-IR spectroscopy, Raman scattering spectroscopy, UV-visible spectrophotometry and cyclic voltammetry (CV). The X-ray photoelectron spectroscopic studies revealed 2.89 O/W atomic ratio. The electrical transport studies on WO3 thin films show semiconducting behavior with n-type semiconductivity. The value of determined coloration efficiency is 57.90 cm(2)/C. The mechanism of Li+ intercalation and deinercalation in h-WO3 matrix is proposed for enhanced electrochromism. (C) 2012 Elsevier Ltd. All rights reserved.

10aChemical synthesis10aElectrochemical properties10aOxides10aphotoelectron spectroscopy1 aKharade, Rohini, R.1 aPatil, K., R.1 aPatil, P., S.1 aBhosale, Popatrao, N. uhttp://library.ncl.res.in/content/novel-microwave-assisted-sol-gel-synthesis-mw-sgs-and-electrochromic-performance-petal-h-002320nas a2200277 4500008004100000022001400041245012700055210006900182260000900251300001100260490000800271520138700279653001901666653002801685653003101713653002001744653002901764653001501793653001001808100002201818700001701840700001901857700001701876700001801893856013101911 2021 eng d a0925-838800aConstruction of IrO2@Mn3O4 core-shell heterostructured nanocomposites for high performance symmetric supercapacitor device0 aConstruction of IrO2Mn3O4 coreshell heterostructured nanocomposi cDEC  a1613280 v8873 aIn the present work, we have designed and synthesized nanocomposite of IrO2@Mn3O4 with two-step simple and scalable chemical routes. In this route, nanofibers of IrO2 were synthesized by a single nozzle electrospinning technique onto which Mn3O4 was overlaid by a simple SILAR route. The ratio of Mn3O4 and IrO2 was varied by varying the SILAR cycles onto electrospun IrO2 thin film as 20, 40, 60, and 80 cycles. The structural, morphological, and energy storage performance of IrO2@Mn3O4 composite elec-trodes were investigated. A 2 V kinetic potential with a rectangular-shaped cyclic voltammogram was observed for the IrO2@Mn3O4 electrodes. Moreover, the specific capacitance of 1027 F/g at 1 mA/cm(2) was observed for the optimized electrode which is superior as compared with other electrodes. The opti-mized electrode showed better current and voltage than the individual compounds which might be due to the synergic effect of IrO2 and Mn3O4. Finally, a PVA-LiClO4 gel electrolyte-based solid-state IrO2@ Mn3O4//IrO2@Mn3O4 symmetric device was fabricated. The symmetric device possessed an energy density of 81 Wh/kg with a power delivery of 714 W/kg which was capable to light up a green LED. Hence, the 2D transition metal oxides laminated on 1D metal oxides with high conductivity can be promising electrodes for future research. (C) 2021 Elsevier B.V. All rights reserved.10aAnd nanoflakes10aCharge storage kinetics10aElectrochemical properties10aelectrospinning10aIrO2@Mn3O4 nanocomposite10ananofibers10aSILAR1 aBeknalkar, S., A.1 aTeli, A., M.1 aHarale, N., S.1 aShin, J., C.1 aPatil, P., S. uhttp://library.ncl.res.in/content/construction-iro2mn3o4-core-shell-heterostructured-nanocomposites-high-performance-symmetric