行业标准锰酸锂英文版征求意见稿Word文件下载.docx
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行业标准锰酸锂英文版征求意见稿Word文件下载.docx
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ThisstandardreplacestheYS/T677-2008Lithiummanganeseoxide.
Inadditiontoanumberofeditorialchanges,thefollowingtechnicaldeviationshavebeenmadewithrespecttotheYS/T677-2008.
—Newnormativereferencesareadded.
—Newtermsanddefinitionsareadded.
—Theclassificationofthelithiummanganeseoxideproductsisadded.
—Theperformanceindexesofdifferenttypesoflithiummanganeseoxideareadded.
—Therequirementsofthemagneticimpuritiescontentareadded.
—Thecontentandtherequirementofthemainelementsintheproductaremodified.
—Thecontentandtherequirementoftheimpurityelementsintheproductaremodified.
—TherequirementofthemoleratioofLitoMninthecompositionoftheproductisdeleted.
—Thecyclictestconditionat55℃isadded.
—AnnexAtoAnnexDinthestandardaredeleted.
ThisstandardwaspreparedbySAC/TC243NationalNonferrousMetalsStandardizationTechnicalCommittee.
Thisstandardisdraftedbythefollowingorganizations:
Thisstandardismainlydraftedbythefollowingpeople:
**,**,**
Thepreviouseditionsofthisstandardareasfollows:
—YS/T677-2008.
LithiumManganeseOxide
1Scope
Thisstandardspecifiestheterms,definitions,requirements,testmethods,testingrules,marking,packaging,transportation,storage,certificateofqualityandcontract/ordercontentoflithiummanganeseoxide.
Thisstandardisapplicabletospinellithiummanganeseoxide,thecathodeactivematerialusedinlithium-ionbatteries.
2NormativeReferences
Thefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.
GB/T1717,DeterminationofpHvalueofanaqueoussuspensionofpigments
GB/T5162,Metallicpowders—determinationoftapdensity
GB/T5314,Powdersforpowdermetallurgicalpurposes—Sampling
GB/T6283,Chemicalproducts—DeterminationofwaterKarlFischermethod(generalmethod).
GB/T13390,Metallicpowder-Determinationofthespecificsurfacearea-Methodofnitrogenadsorption
GB/T19077,Particlesizeanalysis—Laserdiffractionmethods
GB/T23365,Electrochemicalperformancetestoflithiummanganeseoxide—Testmethodforspecificcapacityandcharge-dischargeefficiencyofthefirstcycle
GB/T23366,Electrochemicalperformancetestoflithiummanganeseoxide—Testmethodfordischargeplateaucapacityratioandcyclelife
GB/T24533-2009,Graphitenegativeelectrodematerialsforlithiumionbatteries
JCPDS)(35-0782),X-raypowderdiffractionpatternofspinellithiummanganeseoxide
3Termsanddefinitions
Forthepurposesofthisdocument,thetermsanddefinitionsgiveninGB/T20252-2014apply.
4Requirements
4.1Productclassification
Lithiummanganeseoxideisdividedinto2typesaccordingtotheirpropertiesandapplications:
thehighcapacitylithiummanganeseoxide,andthehighpowerlithiummanganeseoxide.
4.2Chemicalcomposition
TheChemicalcompositionoftheproductshallmeettherequirementsinTable1.
Table1Chemicalcomposition
Chemicalcomposition
Content(massratio)/%
highcapacitylithiummanganeseoxide
highpowerlithiummanganeseoxide
Mainelementscontent
Mn
58.0±
2.0
57.5±
Li
4.2±
0.4
4.1±
Impuritiescontent
K
≤0.05
≤0.01
Na
≤0.3
≤0.1
Ca
≤0.03
Fe
Cu
≤0.005
S
—
≤0.167
4.3Moisture
Themoisturecontentofthehighcapacitylithiummanganeseoxideshallnotbemorethan0.07%.Themoisturecontentofthehighpowerlithiummanganeseoxideshallnotbemorethan0.05%.
4.4pHValue
ThepHvalueoftheproductshallbeintherangeof7.0to11.0.
4.5MagneticImpurities
Themagneticimpuritiescontentoftheproductforwhichthebuyersiderequires,shallbedeterminedbyboththesupplierandthebuyerandspecifiedinthecontract.
4.6ParticleSizeDistribution
ThecharacteristicvalueoftheparticlesizedistributionshallmeettherequirementsinTable2.
Table2Particlesizedistribution
Productclassification
Particlesizedistribution
D50/μm
6.0~14.0
10.0~14.0
Dmax/μm
≤100.0
≤60.0
4.7Tapdensity
ThetapdensityoftheproductshallmeettherequirementsinTable3.
Table3Tapdensity
TapDensity(g/cm3)
≥1.1
≥1.8
4.8Specificsurfacearea
ThespecificsurfaceoftheproductshallmeettherequirementsinTable4.
Table4Specificsurfacearea
SpecificSurfaceArea/(m2/g)
0.4-1.2
0.2-0.7
4.9Appearance
Theproductshallbeuniformblackpowderandagglomerationisnotallowed.
4.10Crystalstructure
ThecrystalstructureoftheproductshallbeinaccordancewiththeJCPDSstandard(35-0782),andtheimpurityphaseshallnotbedetectedcomparedwiththestandardpattern.
4.11Specificdischargecapacity
TheinitialspecificdischargecapacityoftheproductunderspecifiedconditionsshallmeettherequirementsinTable5.
Table5Initialspecificdischargecapacity
InitialSpecificDischargeCapacity,/(mAh/g)
≥110
≥100
4.12Charge/dischargeefficiency
Thefirstcharge/dischargeefficiencyoftheproductunderspecifiedconditionsshallnotbelessthan90%.
4.13Plateaucapacityratio
Theplateaucapacityratiooftheproductunderspecifiedconditionsshallnotbelessthan90%after10cycles,and85%after100cycles.
4.14CycleLife
ThecyclelifeoftheproductshallmeettherequirementsinTable6,whenthedischargecapacityreaches80%ofthedischargecapacityofthefirstcycle.
Table6Cyclelife
Cyclelife,numbers
≥500
≥1000
4.15Hightemperaturecyclelife
Thecyclelifeofthehighpowerlithiummanganeseoxidetestedat55℃shallnotbelessthan300cycles,whenthedischargecapacityreaches80%ofthedischargecapacityofthefirstcycle.
5Testmethods
5.1ChemicalComposition
Thetestonthechemicalcompositioniscarriedoutaccordingtothemethodsagreedbybothsuppliersandbuyers.
5.2Moisture
ThedeterminationofthemoisturecontentiscarriedoutaccordingtoGB/T6283.
5.3pHvalue
ThedeterminationofpHvalueoftheproductiscarriedoutaccordingtoGB/T1717.
5.4Magneticimpurities
ThedeterminationofthemagneticimpuritiescontentoftheproductiscarriedoutaccordingtotheprovisionsinAnnexKofGB/T24533-2009.
5.5Particlesizedistribution
ThedeterminationofthesizedistributionoftheproductiscarriedoutaccordingtoGB/T19077.
5.6Tapdensity
ThedeterminationofthetapdensityoftheproductiscarriedoutaccordingtoGB/T5162.
5.7Specificsurfacearea
MeasurementofthespecificsurfaceareaoftheproductiscarriedoutaccordingtoGB/T13390.
5.8Appearance
Visualinspectionoftheproduct’sappearance.
5.9Crystalstructure
ThecrystalstructureoftheproductisdetectedbyX-raydiffractometer.
5.10Specificdischargecapacity
ThedeterminationofthefirstdischargespecificdischargecapacityoftheproductiscarriedoutaccordingtoGB/T23365.Thecharginganddischargingvoltagerangeis3.00-4.30V,andtheotherconditionsremainunchanged.
5.11Efficiency
ThedeterminationofthefirstchargedischargeefficiencyoftheproductiscarriedoutaccordingtoGB/T23365.Thecharginganddischargingvoltagerangeis3.00-4.30V,andtheotherconditionsremainunchanged.
5.12Plateaucapacityratio
ThemeasurementofthecapacityratiooftheproductplatformiscarriedoutaccordingtotheprovisionsofGB/T23366.Thecharginganddischargingvoltagerangeis3.00-4.20V,andtheotherconditionsremainunchanged.
5.13Cyclelife
ThedeterminationofthecyclelifeoftheproductiscarriedoutaccordingtoGB/T23366.Thecharginganddischargingvoltagerangeis3.00-4.20V,andtheotherconditionsareunchanged.
5.14Hightemperaturecyclelife
ThedeterminationofthehightemperaturecyclelifeoftheproductiscarriedoutaccordingtoGB/T23366.Thetesttemperatureisat55℃andthecharginganddischargingvoltagerangeis3.00-4.20V,andtheotherconditionsareunchanged.
6Inspectionprovisions
6.1Inspectionandacceptance
6.1.1Thesuppliershallchecktheproductandfillinthequalitycertificatetoinsurethatthequalityoftheproductisinaccordancewiththisstandardandthecontract(ororder).
6.1.2Thebuyershallcheckthereceivedproductaccordingtothisstandard,andnegotiatewiththesupplierwithin3monthsafterreceivingtheproduct,inthecasethatthecheckresultdoesn’taccordtothisstandardorthecontract(ororder).Ifanyarbitrationisneeded,samplesshallbeobtainedfrombothsides.
6.2Batches
Theproductshallbesubmittedfortheacceptanceinbatchesandeachbatchiscomposedofthesamemixture,withweightofnotmorethan5000kg.Ifthebuyerhasspecialrequirement,itshallbesettledbasedonthenegotiationbetweenbothsides.
6.3Productinspection
6.3.1Inspectionclassifications
The
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