01669nas a2200277   4500008004100000022001400041245014200055210006900197260010600266300001200372490000800384520063900392653001101031653001801042653001801060653002301078100002001101700002601121700001601147700002201163700001601185700001401201700002001215700002501235856013101260       2009                        eng d  a0038-109800aManipulation of magnetic nanostructures through low temperature metal-oxygen chemistry: Co/CoO exchange biased nanodonuts and Co nanotips0 aManipulation of magnetic nanostructures through low temperature   aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcFEB  a277-2800 v1493 a<p>Dense nanodonut and nanotip type morphologies are shown to self-evolve in Ultrathin cobalt films during growth under Vacuum, depending oil the level of oxygen incorporation and temperature. The nanodonut morphology forms at room temperature and the corresponding magnetic hysteresis shows exchange bias (similar to 35 Oe shift along the field axis), which is attributed to the presence of CoO and its exchange Coupling with cobalt. The morphology evolves into nanotip features with increase of growth temperature, with Concurrent elimination of the oxide component and exchange bias. (C) 2008 Elsevier Ltd. All rights reserved.</p>10aCo/CoO10aMagnetic film10aself assembly10aVacuum evaporation1 aPhase, Deodatta1 aChoudhary, Ram, Janay1 aGanesan, V.1 aReddy, Raghvendra1 aGupta, Ajay1 aSelvi, N.1 aKulkarni, Sneha1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/manipulation-magnetic-nanostructures-through-low-temperature-metal-oxygen-chemistry-cocoo-001901nas a2200181   4500008004100000022001400041245012200055210006900177260007100246300001400317490000700331520116600338100001701504700002301521700002001544700002501564856013001589       2014                        eng d  a0887-062400aEnhanced capacitance retention in a supercapacitor made of carbon from sugarcane bagasse by hydrothermal pretreatment0 aEnhanced capacitance retention in a supercapacitor made of carbo  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUN  a4233-42400 v283 a<p>A unique morphology-controlling protocol involving hydrothermal preprocessing before pyrolysis is presented to convert cellulosic waste in the form of sugarcane bagasse into three-dimensional (3D) interconnected, conducting, and high surface area carbon nanochannels. The large buffer spaces in such a porous carbon sample yield impressive electrochemical capacitance (C-sp) of 280 F/g at a current density of 1 A/g (and 275 F/g at 5 mV/s), with 72% retention even at a very high current density of 20 A/g. In contrast, the non-hydrothermally treated sample exhibits a C-sp value of 180 F/g at 1 A/g and only 52% retention at 20 A/g. The much better performance of the hydrothermally preprocessed bagasse-derived carbon (BHAC) can be ascribed to the solvent retention inside the buffer spaces created, negating the diffusional limitations of pore inaccessibility at higher scan rates. The BHAC has a high surface area of 1260 m(2)/g with a fairly good (11 wt %) concentration of oxygen functionality. The material renders a good energy density of Wh/kg at a power density of 3.5 kW/kg and shows good cyclability of 90% after 1000 charge/discharge cycles.</p>1 aWahid, Malik1 aPuthusseri, Dhanya1 aPhase, Deodatta1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/enhanced-capacitance-retention-supercapacitor-made-carbon-sugarcane-bagasse-hydrothermal-001814nas a2200217   4500008004100000022001400041245012500055210006900180260010600249300001200355490000700367520095400374100001901328700002701347700001801374700001801392700002001410700002401430700002501454856011701479       2014                        eng d  a0008-622300aOligomer-salt derived 3D, heavily nitrogen doped, porous carbon for Li-ion hybrid electrochemical capacitors application0 aOligomersalt derived 3D heavily nitrogen doped porous carbon for  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcDEC  a462-4710 v803 a<p>3D high surface area porous carbon is seen to form via self assembly of porous graphene sheets by direct pyrolysis of an oligomer salt tailored for the realization of molecular level activation. The oligomer salt was derived from 4-amino benzoic acid as the monomer by a facile free radical polymerization process. Incorporation of the functional groups (-COONa) eliminate the need for any external activating agents (KOH, ZnCl2, etc.) and also render high degree of sub-nanoscale homogeneity. This oligomer derived carbon (ODC) exhibits efficient performance in non-aqueous charge storage application namely Li-ion hybrid electrochemical capacitor (Li-HEC) owing to its high surface area, 3D interconnectivity and an appropriate pore size distribution. The Li-HEC fabricated with ODC based electrodes delivered a maximum energy density of similar to 63 Wh kg(-1) with spinel L4Ti5O12 as the anode. (C) 2014 Elsevier Ltd. All rights reserved.</p>1 aGokhale, Rohan1 aAravindan, Vanchiappan1 aYadav, Prasad1 aJain, Srashti1 aPhase, Deodatta1 aMadhavi, Srinivasan1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/oligomer-salt-derived-3d-heavily-nitrogen-doped-porous-carbon-li-ion-hybrid-0