镍锌电池技术发展的最新研究总结

NewlyprogressoftheZn/NisingleflowbatteryOutlineIntroductionBackgroundNewlyprogressExperimentalResultsofourteamResultsofothersConclusionAcknowledgmentIntroductionIt’surgentindemandsofenergystorageforuseofrenewableenergies.frequencycontrolloadregulationUPS,andbackuppowersourcesstabilizingelectricitynetworkandpenetratingrenewableenergyIntroductionRedoxflowbatteryTheredoxcouplesmustbecarriedbythepumpedsolutions;well-suitedfortransmissionanddistributiondeferralapplications;Theadvantages:moderatecost,modularity,transportabilityandflexibleoperation.+–Schemeoftypicalredoxflowcell:reversibleelectro-synthesisplantPumpPump2Br2earge22eargeZn3V2eargeVVO2HeargeIntroductionRedoxflowbatteryThoseRFBsystemsdemonstratedatalargescalerequireexpensivematerials;Aimingtoreducecostsandsimplifythecelldesign,somenewsystemshavebeenreported.Butthesesystemsstillhaveshortcomings;Azincnickelsingleflowbatteryisproposedbyourteam,inwhichalmostnoexpensivematerialsareneeded.zinc/bromineflowbatteryBr2Znchargedischchargedischchargedischallvanadiumflowbattery2dischchargeVO2H2OBackgroundZn/Nisingleflowbattery2Ni(OH)22OH2NiOOH2H2O2edischargechargePos.Zn4OHZn(OH)242edischargechargeNeg.+_Singleelectrolyteflowpath,nomembrane;Modular,Scalable;Non-toxic;stable;ExcellentCyclelifeNiOOHZn泵Zn(OH)42-aq.tage(V)Voltltage(VVolV)Capacity(mAh/cm)BackgroundCoulombicefficiencyofabove95%andenergyefficiencyofabove85%wereobtainedwithlaboratorycell.Fullycharged21.81.624h2.01.51.0positive(vs.Hg/HgO)5C.E.70.6%1.41.21.048h0.50.0-0.5-1.0Negative(vs.Hg/HgO)93.0%95.1%96.0%96.8%0510152025020406080100120-1.52Self-dischargeproperty(25mA/cm2)timeCharge/dischargecurves(25mA/cm2)i/ALogIo/Acm:1.33101E-3BackgroundZn/NisingleflowbatteryZincmorphology,mossyandcrystalline;Tafelananalysis,i0~0.01A/cm2;0.10.01-1-1:0.55-2-2-1.40-1.38-1.36-1.34-1.32Potential/Vvs.Hg/HgOCurrent/AI(mA)ge(V)Voltagtion(%)apacityretentCaCoulombbicEfficiencyyCPb/M:4:52:55:6:53:10Background23Additive0.050.040.030.020.01-4452+11:06Substrate0.0000.0020.004CdPbCu-1.6-1.4-1.2-1.0-0.8-0.6-0.030.00-0.01-0.021-1.6-1.2-0.8-0.40.0060.008E(Vvs.Hg/HgO)ScaleupPotential/Vvs.HgO/Hg7.35Ah(100%DOD)77cm21.62.01.86A3A1.5A100806010080Efficiency:Coulomb6A91.6%3A95.1%1.596.9%Energy75.4%79.7%87.6%604020402080%DOD02000400060001.41.21.0Capacity(mAh)0cycle02500500075001000012500ExperimentalNewlyprogressAllthechemicalsofanalyticalgradepuritywereused.Thesolventofthesolutionsisdistilledwater.ThepumpsweremadebyXinXiShanpumpsCo.,ltd.Laboratorycellandscaled-upcellwereusedtodemonstratetheperformanceoftheZn/Nisingleflowbattery.Laboratorycell,electrodearea:7.0cm×7.0cm;ExperimentalNewlyprogressElectrochemicalperformanceofsingleelctrodewascarriedoutusingaSolartron1280Zworkstationwithcyclicvoltammetryinathree-electrodeWEconfigurationassemblyconsistingofsinterednickeloxideasthecounterelectrode,depsitingzincastheworkingRECEelectrodeandHg/HgOasthereferenceelectrode.workingelectrode:2.0cm×2.0cm;7.0cm×7.0cmExperimentalNewlyprogressThechargeanddischargecharacteristicsofthecellwerestudiedbyapplyingadcconstantcurrentusingaNewareBTS3000batterytestsystem(5V2000mAand5V200A).Laboratorycell1.6V200AhExperimentalNewlyprogressSolutionsforCVs,differentZnOindifferentKOH;Solutionsforthecell,1.0mol/LZnO+10.0mol/LKOH+0.5mol/LLiOH;Thecellwaschargedupto20mAh/cm2atthecurrentdensityof5mA/cm2,10mA/cm2;2)ensity(A/cmCurrentdem)eCharge(C/cmAccumulativeCharge(C/cm)AccumulativeC220ResultsofourteamNewlyprogressCufoilIronmeshSubstrateNifoilThemodeofmasstransportationofIronmeshischangedduetothestructure.Ironmesh1mV/s02000600080000-40-80-1200-4-8400010mV/sNifoil1mV/s0600080000-100-2000-10-202000400010mV/s-0.10-0.150.00Cufoil-0.05FemeshcoatedNi200100506003002008004002501000500300-1200-1-2-3-4-500-1-2-3040030mV/s20050mV/s100150Time(s)00-2-4-60-2-40200400600800-0.20Nifoil30mV/s-0.25100200300400-1.6-1.2-0.8-0.450mV/s50100150200250Potential(Vvs.Hg/HgO)Time(s)程杰,文越华,徐艳，物理化学学报,已投稿ChemicaljournalofChineseuniversities,2011,32:1-4I(cps)cps)I(c-30mA/cm40min2-40mA/cm30min1-60mA/cm20min-80mA/cm15minResultsofourteamNewlyprogressElectrodepositionofpreferentiallyorientedzinc1012210420111210311010210000225mA/cm220mA/cm230mA/cm240mA/cm260mA/cm280mA/cm2TheeffectofcurrentonmorphologyandcrystalStructureofzinc3040506070809010014h3h40min30min30min30min00222.7522.0520.03619.326.621.46221122(deg)1031001011021038.7341.396.056.038.9536.287.239.2211.8136.376.337.619.7741.646.936.838.0431.636.899.861.18.1719.5436.510111010211100044.351.644.821.115.31.795.831.414.481.425.3801124.385.864.284.885.2424.39304050607080901001101000022(deg)10422002011.143.503.51.372.2203.340.772.850010400.941.7101.43.42g/HgOtial/Vvs.HgPotentacity/mACapAhResultsofourteamSinteredNickelelectrode0.80.6NewlyprogressAfter100cyclesAfter300cyclesAfter500cyclesCyclingDischargecapacity/mAh(100&DOD,8mol/LKOH)0.4number0.3MZnO51001001000.4MZnO10099.310.5MZnO0.6MZnO0.7MZnO10010010098.1997.7598.0220099