简介：

简介：Byutilizinghardtemplatemethodtoadjustthemesoporelength,andalkaliactivationtogeneratemicropores,twohierarchicalporouscarbons(HPCs)wereprepared.Withcontrollingoftheirmesoporelengthandtheactivationconditions,thecomplexsystemcomposedbyHPCsandelectrolytewassimplifiedandtheeffectofmesoporelengthontheperformanceofHPCsaselectrodesinsupercapacitorswasinvestigated.Itisfoundthatwiththemesoporelengthgettingsmaller,theorderedareagetssmallerandthaggregationoccurs,whichiscausedbythehighsurfaceenergyofsmallgrains.HPCwithlongpore(HPCL)exhibitsadonut-likemorphologywithwell-definedorderedmesoporesandaregularorientationwhileinHPCwithshortpores(HPCS),shortmesoporesareonlyorderlydistributedinsmallregionsLongerorderedchannelsformunobstructedwaysforionstransportintheparticleswhileshorterchannels,onlyorderlydistributedinsmallareas,resultsinblockedpaths,whichmayhindertheelectrolytionstransport.Duetotheunobstructedstructure,HPCLexhibitsgoodratecapabilitywithacapacitancretentionrateover86%ascurrentdensityincreasingfrom50mA/gto1000mA/g.ThespecificcapacitanceofHPCLderivedfromthecyclicvoltammetrytestat10mV/sisupto201.72F/g,whilethespecificapacitanceofHPCSisonly193.65F/g.

简介：阐明physisorbed的效果几何学和hydrogenated钻石电影的电子结构上的活跃离子，HCO3-的模型，H3O+,并且哦hydrogenated钻石(100)上的离子physisorbed出现被构造。密度功能的理论被用来计算状态的几何学，吸附精力，和部分密度。结果证明表面都在离子吸附以后改变了到不同的度的hydrogenated钻石(100)的几何学。在他们之中，H3影响的O+离子hydrogenated钻石(100)的几何学出现大多数。这与计算吸附精力的结果很好一致，它显示一个强壮的静电的吸引力发生在hydrogenated钻石(100)之间表面和H3O+离子。另外，电子从hydrogenated钻石(100)显著地转表面到吸附的H3O+离子，它导致一向下变在H3O+离子。然而，为活跃离子喜欢哦和HCO3-，没有戏剧的变化为吸附的离子的电子结构出现。

简介：HybridnematicfilmshavebeenstudiedbyMonteCarlosimulationsusingalatticespinmodel,inwhichthepairpotentialisspatiallyanisotropicanddependentonelasticconstantsofliquidcrystals.Weconfirminthethinhybridnematicfilmtheexistenceofabiaxiallynonbentstructureandthestructuretransitionfromthebiaxialtothebent-directorstructure,whichissimilartotheresultobtainedusingtheLebwohl-Lashermodel.However,thestep-likedirector'sprofile,characteristicforthebiaxialstructure,isspatiallyasymmetricinthefilmbecausethepairpotentialleadstoK1≠K3.Weestimatetheuppercellthicknesstobe69spinlayers,inwhichthebiaxialstructurecanbefound.