简介：采用微波合成法制备了含掺杂P，Al和La元素的正极材料LiCoO2，确定了工艺条件，包括反应时间、微波功率和反应温度．采用XRD，SEM和电化学测试仪研究了添加元素对LiCoO2结构和电化学性能的影响．研究发现，微波功率和反应时间对产物的结构有比较明显的影响．充放电试验结果表明，掺加La元素正极材料LiCoO2首次充放电容量达到了130mAh·g^-1．

简介：当溶剂不在时利用KF/Al2O3的酰胺的一个提高微波的水解作用被开发了。胺与相应的羧基的酸一起在优秀收益被生产。

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简介：Fe_(3–x)O_4raspberryshapednanostructures/graphenenanocompositesweresynthesizedbyaone-steppolyol-solvothermalmethodtobetestedaselectrodematerialsforLi-ionbattery(LIB).Indeed,Fe_(3–x)O_4raspberryshapednanostructuresconsistoforiginalorientedaggregatesofFe_(3–x)O_4magnetitenanocrystals,ensuringalowoxidationstateofmagnetiteandahollowandporousstructure,whichhasbeeneasilycombinedwithgraphenesheets.TheresultingnanocompositepowderdisplaysaveryhomogeneousspatialdistributionofFe_(3–x)O_4nanostructuresatthesurfaceofthegraphenesheets.TheseoriginalnanostructuresandtheirstronginteractionwiththegraphenesheetsresultedinverysmallcapacityfadinguponLi+ionintercalation.Reversiblecapacity,ashighas660mAh/g,makesthismaterialpromisingforanodeinLi-ionbatteriesapplication.

简介：与黄金和氧化铁nanoparticles并且与silibinin装载的PEGylated-PLGA随机的nanofibrous膜被electrospinning免职准备。nanofibrous膜能遥远地被控制并且由一盏激光灯或磁场激活在需求上释放生物代理人。nanosystems用扫描电子显微镜学被描绘，红外线的光谱学，原子磁性的回声光谱学，和thermogravimetric分析的Fourier变换。装载效率和药内容百分比的药被紫外力的光吸收光谱学决定。nanofibrous膜由相对低紧张的激光照耀或由一个磁场刺激了为至少60h显示出持续silibinin版本，没有爆炸效果。建议便宜electrospinning过程能够集合，经由一个一步舞过程，有外部地为控制的药交货要激活的金属性的nanoparticles的刺激应答的装载药的nanosystem。

简介：用Co2（CO）8与CH3CSNH2反应制得产物Ⅰ，又用Na2Fe（CO）4与Ⅰ反应制得产物Ⅱ（Ⅰ：Co3（μ3－S）（CO）7（CH3CSNH），Ⅱ：Co2Fe（μ3-S）（CO）7（CH3CSNH）．通过元素分析。IR、UV、1HNMR、MS表征并用X射线衍射法测得Ⅱ的单晶结构.该簇合物属三斜晶系、PT空间群，晶胞参数：a=0．9203（1），b=1．1296（2），c=1.1425（2）nm；α=116．40°（2），β＝101．92°（2），γ＝92．58°（1）；z＝2，V=1．2162nm3，Dc＝1．698cm3，μ＝21．89cm-1.结构分析表明，Co2FeS构三角锥分子骨架，所有CO均为端基配体，S1为面桥基配体，CH3CSNH为双齿配体，与Co、Fe形成五元环结构．

简介：Toimprovetheinitialcoulombicefficiencyandbulkdensityoforderedmesoporouscarbons,activeFe2O3nanoparticleswereintroducedintotubularmesoporechannelsofCMK-5carbon,whichpossesseshighspecificsurfacearea(>1700m2g-1)andlargeporevolume(>1.8cm3g-1).FineFe2O3nanoparticleswithsizesintherangeof57nmwerehighlyandhomogenouslyencapsulatedintoCMK-5matrixthroughammonia-treatmentandsubsequentpyrolysismethod.TheFe2O3loadingwascarefullytailoredanddesignedtowarrantahighFe2O3contentandadequatebufferspaceforimprovingtheelectrochemicalperformance.Inparticular,suchFe2O3andmesoporouscarboncompositewith47wt%loadingexhibitsaconsiderablystablecycleperformance(683mAhg-1after100cycles,99%capacityretentionagainstthatofthesecondcycle)aswellasgoodratecapability.Thefabricationstrategycaneffectivelysolvethedrawbackofsinglematerial,andachieveahigh-performancelithiumelectrodematerial.

简介：Synthesisofinorganicnanostructureswithspecificsizeandwelldefinedmorphologieshasattractedconsiderableattentionduetotheirsuperiorelectrical,optical,magnetic,andchemical

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简介：WhileFe-basedoxygencarriers(OC)areregardedtobepromisingforchemicalloopingcombustion(CLC),thedecreaseofCO2selectivityduringdeepreductionprocessandthesevereagglomerationofFe2O3oftenoccuraftermultipleredoxcyclesduetothelowoxygenmobility.Herein,Fe-substitutedBahexaaluminates(BaFexAl12–xO19,denotedasBFxA-H,x=1and2)preparedbyamodifiedtwo-stepmethodexhibitednotonlyhigheramountofconvertedoxygen(Ot)andCH4conversion(77%and81%vs.17%and75%)thanthosepreparedbythetraditionalco-precipitationmethod(BFxA-C,x=1and2)butalsohighCO2selectivityabove92%duringthenearlywholereductionfromFe3+toFe2+.Furthermore,theBFxA-Hexhibitedtheexcellentrecyclabilityduring50cycles.ThebetterperformancewasascribedtothemarkedlyenhancedoxygenmobilitywhichresultedfromdominantoccupancyofFecationsinAl(5)sites(Fe5:71%and70%vs.49%and41%)inmirrorplanesofhexaaluminateleadingtolargeramountoflatticeoxygencoordinatedwithFe5(O–Fe5)(0.45and0.85mmol/gvs.0.31and0.50mmol/g).TheimprovementofoxygenmobilityalsofavoredthepreservationofchemicalstateofFecationsinhexaaluminatestructureinthere-oxidationstep,resultingintheexcellentrecyclabilityofBFxA-H.

简介：研究了Fe3＋-金橙G（OG）体系的共振光散射光谱,发现Fe3＋对OG的共振光散射有增强效应。进一步研究发现,其增强值（△I）与加入Fe3＋的质量浓度呈线性关系,对条件进行了优化,并建立了一种测定Fe3＋的新方法,方法的线性范围为0.028～1.00μg/mL,检出限为0.009μg/mL,用于水样中痕量Fe3＋的测定,结果满意。

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简介：Inthiswork,theinfluenceofCO2onthestructuralvariationandcatalyticperformanceofNa2WO4/Mn/SiO2foroxidativecouplingofmethanetoethylenewasinvestigated.ThecatalystwaspreparedbyimpregnationmethodandcharacterizedbyXRD,RamanandXPStechniques.AppropriateamountofCO2inthereactantgasesenhancedtheformationofsurfacetetrahedralNa2WO4speciesandpromotedthemigrationofOinMOx,Na,Wfromthecatalystbulktosurface,whichwerefavorableforoxidativecouplingofmethane.WhenthemolarratioofCH4/O2/CO2was3/1/2,enrichedsurfacetetrahedralNa2WO4speciesandhighsurfaceconcentrationofOinMOx,Na,Wweredetected,andthenhighCH4conversionof33.1%andhighC2H4selectivityof56.2%wereobtained.WithfurtherincreaseofCO2inthereagentgases,thecontentofactivesurfacetetrahedralNa2WO4speciesandsurfaceconcentrationofOinMOx,Na,Wdecreased,whilethatofinactivespecies(MnWO4andMn2O3)increaseddramatically,leadingtolowCH4conversionandlowC2H4selectivity.ItcouldbespeculatedthatNa2WO4crystalwastransformedintoMnWO4crystalwithexcessiveCO2addedunderthereactionconditions.PretreatmentofNa2WO4/Mn/SiO2catalystbymoderateamountofCO2beforeOCMalsopromotedtheformationofNa2WO4species.

简介：Inthepresentwork,aninterconnectedsandwichcarbon/Si-SiO2/carbonnanospherescompositewaspreparedbytemplatemethodandcarbonthermalvapordeposition（TVD）.ThecarbonconductivelayercannotonlyefficientlyimprovetheelectronicconductivityofSi-basedanode,butalsoplayakeyroleinalleviatingthenegativeeffectfromhugevolumeexpansionoverdischarge/chargeofSi-basedanode.Theresultingmaterialdeliveredareversiblecapacityof1094mAh/g,andexhibitedexcellentcyclingstability.Itkeptareversiblecapacityof1050mAh/gover200cycleswithacapacityretentionof96%.

简介：做Si的Ge(2)sb(2)Te(5)电影被dc劈啪作响magnetronco与Ge2Sb2Te5和Si目标准备了。在在两结晶化温度和阶段转变温度fromface-centred-cubic(fcc)的增加的Te(5)电影结果分阶段执行到的Ge(2)sb(2)的Si的增加六角形(十六进制)阶段。Ge2Sb2Te5电影的抵抗力显示出重要增加，Si做。当在这部电影做Si的11.8at.%时，在退火的460度C以后的抵抗力与undopedGe2Sb2Te5电影相比从64～99终止从1～11m终止(.)厘米和动态抵抗增加增加。这对写阶段变化随机存取记忆的当前的减小很有用。

简介：Higher-κdielectricLaLuO_3,depositedbymolecularbeamdeposition,withTiNasgatestackisintegratedintohigh-mobilitySi/SiGe/SOIquantum-wellp-typemetal-oxide-semiconductorfieldeffecttransistors.Thresholdvoltageshiftandcapacitanceequivalentthicknessshrinkareobserved,resultingfromoxygenscavengingeffectinLaLuO_3withTi-richTiNafterhightemperatureannealing.Themechanismofoxygenscavenginganditspotentialforresistivememoryapplicationsareanalyzedanddiscussed.

简介：Si-richsiliconnitridefilmsarepreparedbyplasma-enhancedchemicalvapordepositionmethod,followedbythermalannealingtoformtheSinanocrystals(Si-NCs)embeddedinSiNxfloatinggateMOSstructures.Thecapacitance–voltage(C–V),current–voltage(I–V),andadmittance–voltage(G–V)measurementsareusedtoinvestigatethechargingcharacteristics.Itisfoundthatthemaximumflatbandvoltageshift(△VFB)duetofullchargedholes(～6.2V)ismuchlargerthanthatduetofullchargedelectrons(～1V).ThechargingdisplacementcurrentpeaksofelectronsandholescanbealsoobservedbytheI–Vmeasurements,respectively.FromtheG–VmeasurementswefindthattheholeinjectionisinfluencedbytheoxideholetrapswhicharelocatedneartheSiO2/Si-substrateinterface.CombiningtheresultsofC–VandG–Vmeasurements,wefindthattheholechargingoftheSi-NCsoccursviaatwo-steptunnelingmechanism.TheevolutionofG–VpeakoriginatedfromoxidetrapsexhibitstheprocessofholeinjectionintothesedefectsandtransferringtotheSi-NCs.

简介：利用YAG-50型声光调Q激光划片机对156＋156＊0．18mm的多晶硅太阳能电池片进行划片实验，得到了不同调Q频率和电池片电性能参数的关系，从而找出了Q开关的最佳频率范围值，并从理论上探讨分析了不同调Q频率范围划片得到的太阳能电池片电性能参数差异的原因。

简介：AmassofGaNnanowireshasbeensuccessfullysynthesizedonSi(111)substratesbymagnetronsputteringthroughammoniatingGa2O3/Cofilmsat950C.X-raydiffraction,scanningelectronmicroscopy,highresolutiontransmissionelectronmicroscopeandFouriertransformedinfraredspectraareusedtocharacterizethesamples.Theresultsdemonstratethatthenanowiresareofsingle-crystalGaNwithahexagonalwurtzitestructureandpossessrelativelysmoothsurfaces.ThegrowthmechanismofGaNnanowiresisalsodiscussed.更多还原

简介：5A06铝合金在工业上广泛应用，但一般熔化焊接方法很难避免铝合金焊接气孔的产生，从而影响焊缝质量。而近年出现的搅拌摩擦焊是一种固态连接，与传统的方法相比具有其独特的优点，能解决铝合金焊接出现的气孔、夹渣等焊接缺陷问题。