納米銀粉的制備及其電化學(xué)性能研究.pdf

1、中南大學(xué)碩士學(xué)位論文納米銀粉的制備及其電化學(xué)性能研究姓名：樊新申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：黃可龍20070516中南大學(xué)碩十學(xué)位論文ABSTRACTABSTRACTNanosilverpowderhasbeenwidelyappliedintheelectrodematerialsduetoitssmallgrainsize，largespecificsurfaceareas，manyactivesitesOilthesu

2、rface，andhighconductivityInthispapernanosilverpowderswerepreparedbychemicalreductioninliquidphaseandreversemicroemulsion，repectivelyForthepreparationofnanosilverpowderbythechemicalreductioninliquidphase，thecategoryofredu

3、cingagent，theinitialAgconcentration，reactiontemperature，andPVPconcentrationwereinvestigatedTheoptimizedpreparationconditionswereacquiredaslistedbelowThereducingagentissodiumborohydride，theinitialgfconcentrationofis02mol／

4、L，thereactiontemperatureis45“C，PVPconcentrationis02mol／LFortheonesyntheziedbyreversemicroemulsion，theinitialAgconcentration，reactiontemperature，theratioofwaterandsurfactantPVP，andthedosageofcosurfactant(nhexylolalcoh01)w

5、erestudiedTheoptimalconditionsgainedwereasfollowsTheinitialAgconcentrationisO1mol／L，thereactiontemperatureofisintherangeof40to50。C，theratioofwaterandsurfactantis1，thedosageofnhexylalcoholis02m01Thecycleperformanceoftheba

6、tterysofdoubleelectrodeswhichweremadebynanosilverandthenanosilvergraphitecarboncompositesweretestedatsmallrateThenanosilverandthenanosilvergraphitecarboncompositeswerepreparedbychemicalreductioninliquidphaseandreversemic

7、roemulsioninourexperimentsTheresultsindicatedthatthenanosilverelectrodesheldhi【曲specificcapacityandfavorablecycleperformance，andtheelectrochemicalcycleperformanceofthenanosilvergraphitecarboncompositesafterthedepositiono