ICS 77.160 YS H 71 Nonferrous Metal Industry Standard of the People' s Republic of China YS/T 677—2016 ReplaceYS/T 677—2008 Lithium manganese oxide 锰酸锂 (EnglishTranslation) （报批稿） Issue date: 2016-07-11 Implementation date: 2017-01-01 Issued by Ministry of Industry and Information Technology of the People's Republic of China YS/T 677-2016 Foreword SAC/TC 243 is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative. This standard is drafted in accordance with the rules given in the GB/T 1.1-2009 This standard replaces YS/T 677-2008 Lithium manganese oxide in whole. In addition to a number of editorial changes, the following technical deviations have been made with respect to the YS/T 677-2008. New normative references were added. New terms and definitions were added. The classification of the lithium manganese oxide product was added The performance of different types of lithium manganese oxide were added The requirement of the magnetic impurities content was added. The content and the requirement of the main elements in the product were modified The content and the requirement of the impurity elements in the product were modified. The requirement of the mole ratio of Li to Mn in the composition of the product was deleted The cycle test condition at 55C was added. Annex A to Annex D in the previous standard were deleted. This standard was proposed and prepared by SAC/TC 243 National Nonferrous Metals Standardization Technical Committee. The previous editions of this standard are as follows: —YS/T 677-2008. 2 YS/T677-2016 Lithium manganese oxide 1 Scope This standard specifies the terms, definitions, requirements, test methods, inspection rules,marking,packaging,transportation,storage,quality certificateandcontract/order contents of lithium manganese oxide. This standard is applicable to the cathode active material spinel Iithium manganese oxide, used in lithium-ion batteries 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 1717,Determination of pH value of an aqueous suspensionof pigments GB/T5162,Metal/ic powders—Determination of tap density GB/T 5314,Powders for powdermeta//urgica/purposesSamp/ing GB/T6283,Chemica/productsDeterminationofwaterKar/Fischermethod(genera/method) GB/T13390,Metal//icpowder-Determinationof the specific surfacearea-Methodof nitrogen absorption GB/T19077,Partic/esizeana/ysisLaserdiffractionmethods GB/T20252,Lithiumcoba/toxide GB/T23365,E/ectrochemica/performance test of/ithiumcoba/toxide-Test method for specific capacity and charge-discharge efficiency of the first cycle GB/T23366,E/ectrochemica/performancetest of/ithiumcoba/t oxide-Testmethodfor dischargeplateau capacity ratio and cyc/e /ife GB/T24533-2009,Graphite negative e/ectrode materia/s for /ithium ionbattery JcPDs(35-0782),X-raypowderdiffraction standardpatternof spine//ithiummanganese oxide 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 20252-2014 and the following apply. 4 Requirements 4.1 Product classification 1) Joint Committee on Powder Diffraction Standards 3 YS/T 677-2016 Lithium manganese oxide is classified into 2 types according to their properties and applications: t the high capacity lithium manganese oxide, and the high power Iithium manganese oxide 4.2( Chemical composition The chemical composition of the product shall meet the requirements in Table 1. Table 1 Chemical composition Content(mass fraction)/% Chemical composition High capacity lithium manganese High power lithium manganese oxide ap!xo Mn 58.0±2.0 57.5±2.0 Main elements Li 4.2±0.4 4.1±0.4 K ≤0.01 ≤0. 05 Na ≤0.3 ≤0.1 Ca ≤0.03 Impurities Fe ≤0.01 ≤0. 01 Cu ≤0.005 ≤0. 005 S ≤0.167 4.3 Moistu