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11篇 您的检索式:作者名="Ghimbeu"
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1Hard carbon derived from coconut shells,walnut shells,and corn silk biomass waste exhibiting high capacity for Na-ion batteries显示文摘In recent years,hard carbon materials have gained significant interest as anode materials for Na-ion batteries.Biomass waste is considered one of the most interesting,renewable,available,and cost-effective precursor to obtain hard carbon(HC);however,HC properties must be finely tuned to achieve performance comparable to those provided by Li-ion batteries.In this work,three biomass wastes(coconut shells,walnut shells,and corn silk) were evaluated as potential precursors for HC preparation involving a pyrolysis process and subsequent acid washing to remove the inorganic impurities.All obtained materials exhibited low and similar specific surface areas(<10 m^(2)·g^(-1)), but they presented different structures and surface functionalities.The walnut shell HC possessed a lower amount of inorganic impurities and oxygen-based functional groups compared to the coconut shell and corn silk HCs,leading to higher initial coulombic efficiency(iCE).The structural organization was higher in the case of the walnut shell HC,while the corn silk HC revealed a heterogeneous structure combining both highly disordered carbon and localized graphitized domains.All HCs delivered high initial reversible capacities between 293 and 315 mAh g^(-1) at 50 mA g^(-1) current rate,which remained rather stable during long-term cycling.The best capacity(293 mAh g^(-1) after 100 charge/discharge cycles) and highest capacity retention(93%) was achieved in walnut HCs in half-cells,which could be associated with its higher sp2 C content,better organized structure,and fewer impurities.An 'adsorption-insertion' Na storage mechanism is suggested based on several techniques.The walnut HCs exhibited an attractive energy density of 279 Wh/kg when tested in full cells.Cristina Nita Biao Zhang Joseph Dentzer Camélia Matei Ghimbeu 2021Journal of Energy Chemistry2021,30,7:4
2Influence of surface chemistry on the adsorption of oxygenated hydrocarbons on activated carbon显示文摘Ghimbeu C M Gadiou R Dentzer J 0,,24:1
3“Light-assisted evaporation induced self-assembly”:an efficient approach toward ordered carbon materials显示文摘Ghimbeu C M Soprony M Sima F 2015RSC Advances2015,4,:1
4One-pot laser-assisted synthesis of porous carbon with embedded magnetic cobalt nanoparticles显示文摘Ghimbeu C M Sopronyi M Sima F 2015Nanoscale2015,22,10:1
5Influence of SurfaceChemistry on the adsorption of oxygenated hydrocarbons onactivated carbon显示文摘Ghimbeu C M Gadiou R Dentzer J 2010Langmuir2010,26,18:1
6Catalyst -free soft -template synthesis of ordered mesoporous carbon tailored using phloroglucinol/ glyoxylie acid environmentally friendly precursors 显示文摘Ghimbeu CM Vidal L Delmotte L 2014Green Chem2014,16,6:1
7Cata- lyst-free soft-template synthesis of ordered mesoporous carbon tailored using phloroglucinol/glyoxylic acid envi- ronmentally friendly precursors显示文摘GHIMBEU C M VIDAL L DELM01TE L 2014Green Chemistry2014,16,6:1
8Tungsten trioxide thin films prepared by electrostatic spray deposition technique显示文摘Camelia Matei Ghimbeu Robert C van Landsehoot Joop Schoonman 2007Thin Solid Films2007,515,:1
9Electrostatic spray deposited zinc oxide films for gas sensor applications 显示文摘GHIMBEU C M 2007Applied Surface Science2007,2007,:1
10Electrostatic Spray Deposited Zinc Oxide Films for Gas Sensor Applications 显示文摘Camelia Matei Ghimbeu Joop Sehoonman Martine Lumbreras 2007Applied Surface Science2007,253,18:1
11Carbon–Iron Microfibrous Material Produced by Thermal Treatment of Self-rolled Poly(4-vinyl pyridine) Films Loaded by Fe_2O_3 Particles显示文摘Ensembles of freeze-dried self-rolled polymer micro-scrolls are explored as template media for producing carbon–iron based composites with fibrous morphology. Polymer fibres impregnated with furfuryl alcohol and loaded with Fe2O3 particles, were thermally treated under inert atmosphere at 700 °C and subsequently analysed by scanning and transmission electron microscopy, X-ray diffraction,thermogravimetric analysis, and nitrogen adsorption. The resulting material has a micro-fibrous morphology and is basically composed of metallic Fe0 and FeO particles, i.e., more than 98 wt% of the carbon/iron-based composite mass. These particles are held together by amorphous porous carbon foam obtained by in-situ carbonization of the polymer/Fe2O3 composite with evacuation of carbon from the system via COx gases released by carbo-reduction of Fe2O3. The material has significant activity in the reaction of catalytic decomposition of hydrogen peroxide in water solutions.Camelia Matei Ghimbeu Aleksandr I.Egunov Andrey S.Ryzhikov Valeriy A.Luchnikov 2015Journal of Materials Science & Technology2015,31,9:0
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