高精度恒溫環(huán)境電化學量熱系統(tǒng)的建立.pdf

1、中南大學碩士學位論文高精度恒溫環(huán)境電化學量熱系統(tǒng)的建立姓名：張正華申請學位級別：碩士專業(yè)：物理化學指導教師：方正王少芬20080422中南大學碩士論文ABSTI認CTABSTRACTThecombinationofthermo—chemicalandelectrochemicalmethods，whichiScalledasthermo—electrochemistryisusedforstudyingcellreactionorhal

2、fcellreactionIntheapproach，afourdimensionaldataelectricpotentialcurrentheatflow(ortemperaturedifference)一time，Callbecollectedandrecordedsimultaneouslyforthesystemstudied，andaretreatedandanalyzedbasedontheprinciplesofther

3、modynamics，kineticsandelectrochemistryBythismethod，themoredatathanthoseinthermoehemicalorelectrochemicalmeasurementsCanbeobtainedInthispaperthebasicequationforthermoelectrochemistry(TEC)isfirstmodified，asystemforthermoel

4、ectrochemicalmeasurementswheretheSRC100SolutionReactionIsoperibolCalorimeterasitsmainpartWaSsetupandtestedbytheelectrodereactionoftheFe(CN)63“／Fe(CN)64coupleThemainresultsareasfollows：1nlemodifiedthermo—electrochemicaleq

5、uationfortheentropychangeofahalfcellreactionhasbeenderivedasC!ATdt。：fid，弘；刪一一isk(SHE)dtcp，：掣|idtO?！?。月‰(c專o)一△。碥p一0)氣，‰2土—10TheentropychangeofhalfcellreactionOilabsolutescaleinagivenconcentrationCanbeobtainedfromasetofthe

6、experimentaldataof△坎f—andrlk(t)tcurvesobtainedbytheelectrodepolarizationinconstantcurrent2Thesystemforthermoelectrochemicalmeasurements，whichconsistedofaSRCI00Solution—ReactionIsoperibolCalorimeteraheatsensorandaCHl660Be

7、lectrochemicalworkstation，wasassembledThecyclicvoltammetryinOOlmolL1K3Fe(CN)6001molL1K4Fe(CN)61mol／LKClsolutionhasusedfortestingthereliabilityforthesystemThecalorimetergivesthestudiedsystemanicerthermostatwith40001Ktempe

8、raturefluctuations，adataAcquisitionprogram，whichisvisualandsimpletooperate，amainframewhichcontainsWheatstonebridge，microvoltamplifier，potentiostat，constantcurrentsourceandUSBdataacquisitionmoduleThethermistorwiththegoodl