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GB/T 24533-2019: Graphite negative electrode materials for lithium ion battery Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 24533: Historical versions
Similar standardsGB/T 24533-2019: Graphite negative electrode materials for lithium ion battery---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT24533-2019GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.050 Q 51 Replacing GB/T 24533-2009 Graphite negative electrode materials for lithium ion battery Issued on: MARCH 25, 2019 Implemented on: FEBRUARY 01, 2020 Issued by. State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword... 4 1 Scope... 8 2 Normative references... 8 3 Terms and definitions... 9 4 Classification and code... 9 5 Technical requirements... 11 6 Test methods... 11 7 Inspection rules... 13 8 Packaging, marking... 14 9 Storage and transportation... 15 Appendix A (Normative) Method for determination of particle size distribution ... 21 Appendix B (Normative) Method for determination of moisture content... 25 Appendix C (Normative) Method for determination of pH... 28 Appendix D (Normative) Method for determination of true density... 30 Appendix E (Normative) Method for determination of interlayer spacing d002 ... 33 Appendix F (Normative) Method for determination of graphite orientation... 35 Appendix G (Normative) Method for determination of first coulomb efficiency and first discharge specific capacity... 38 Appendix H (Normative) Method for determination of trace metal elements.. 42 Appendix I (Normative) Method for determination of anions... 45 Appendix J (Normative) Method for determination of sulfur content... 49 Appendix K (Normative) Method for determination of magnetic substances.. 52 Appendix L (Normative) Method for determination of powder compaction density... 56 Appendix M (Normative) Method for determination of tap density... 58ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 24533-2009 “Graphite negative electrode materials for lithium ion battery”. As compared with GB/T 24533-2009, the main technical contents of this standard are as follows. - MODIFY the normative references (see Chapter 2); - MODIFY the definition of graphite negative electrode material for lithium ion battery; MODIFY the “carbon anode” in the definition into “graphite anode” (see 3.1); - MODIFY the "mesophase carbon microsphere artificial graphite" into "carbon micro bead"; MODIFY the "petroleum coke type artificial graphite" into "common petroleum coke artificial graphite"; ADD the explanation of composite graphite (see 4.1.1); - MODIFY the grade of graphite anode materials for some lithium-ion batteries; ADD the graphitization index (see 4.1.2); - DELETE the "AG-PAG-I-18-340" from the example of product code (see 4.2 of 2009 edition); - MODIFY the content of typical product technical indicators; MODIFY the “Table 3 ~ Table 11” to “Table 3, Table 4, Table 5” (see 5.2); - MODIFY the moisture determination into making determination according to Appendix B or GB/T 3521 (see 6.3); - MODIFY the determination of specific surface area into making determination according to GB/T 19587 (see 6.6); - ADD the determination method of the graphite orientation (reference index), to make determination according to the provisions of Appendix F (see 6.9); - DELETE the determination of NO2- and PO43- (see 6.12 of the 2009 edition); - MODIFY the method for determination of organic content (see 6.17); - MODIFY the method for determination of the content of restricted substances (see 6.18); - MODIFY the sampling and sample preparation into complying with the provisions of GB/T 1427 (see 7.1.1); - DELETE that "samples that are used for inspection and retention shall be retained for at least 500 g" (see version 7.1.4 of 2009); - In the exit-factory inspection, ADD the first discharge specific capacity, the first coulombic efficiency; DELETE the pH value (see 7.2.1); - DELETE the “raw material batch number” in the type test (see 7.2.2 of the 2009 edition); - In the acceptance rules, DELETE that “the receiving party has the right to accept the product according to this standard and has the right to reject products that do not meet the requirements of this standard” (see 7.3.3 of the 2009 edition); - MODIFY the requirements for packaging and marking. the packaging and marking of the product conform to the provisions of GB/T 191 and GB/T 6388; the net weight is negotiated between the supplier and the purchaser (see 8.1); - DELETE "Recommendation. in an environment with temperature ≤ 45 °C and humidity ≤ 75%" (see 8.2 of 2009 edition); - DELETE that "At the front side of each package of the graphite negative electrode material for lithium-ion battery, it shall have a prominent mark” (see 8.4.1 of 2009 edition); - DELETE the "Recommendations. temperature ≤ 45 °C and humidity ≤ 75%" (see 9.1 of 2009 edition); - MODIFY the requirements for dispersant in Appendix A (see A.3.1); - MODIFY the scope of the particle test (see A.4.3); - MODIFY the instrument setting parameters in Appendix A to. Set the optimal parameters according to the instrument manual (see A.4.4); - MODIFY the results calculation and data processing in Appendix A, adding "Dmax" (see A.7); - MODIFY the instrument and equipment in Appendix B; MODIFY the balance sensitivity to “0.0001 g”; INCREASE the micro-injector by “5 μL” (see B.4.2 and B.4.3); - MODIFY the reagents and materials in Appendix C (see C.3); - MODIFY the instruments and equipment in Appendix C; DELETE the watch glass and the hot plate; ADD the ultrasonic cleaner (see C.4); - MODIFY the preparation of specimen in Appendix C (see C.5); - MODIFY the instruments and equipment in Appendix D; MODIFY the balance sensitivity to “0.0001 g” (see D.4.4); - ADD the requirements for rounding off of the result calculation and data processing in Appendix D (see D.6.3); - ADD the Appendix F, Determination of graphite orientation (see Appendix F); - MODIFY the binder in Appendix G (see G.3.2); - MODIFY the analysis procedure in Appendix G; MODIFY it into “charge- discharge rate of 0.1C” (see G.6); - MODIFY the scope of Appendix H and ADD the “cobalt, zinc” (see H.1); - MODIFY the reagents and materials in Appendix H; ADD the standard solutions of cobalt and zinc (see H.3); - MODIFY the instruments and equipment in Appendix H; MODIFY the balance sensitivity to “0.0001 g” (see H.4); - MODIFY the determination requirements in Appendix H; ADD the reference wavelengths of cobalt and zinc (see H.7); - DELETE the "NO2-" and "PO43-" from the scope of Appendix I (see I.1 of the 2009 edition); - DELETE the preparation of the standard solution of "NO2-" and "PO43-" from the reagents and materials in Appendix I (see I.3 of 2009 edition); - MODIFY the determination range in Appendix K; ADD the cobalt content (see K.1); - MODIFY the reagents and materials in Appendix K; ADD the cobalt standard solution (see K.3.5); - MODIFY the instruments and equipment in Appendix K (see K.4); - MODIFY the specimen preparation in Appendix K (see K.5); - MODIFY the preparation of a series of mixed standard solutions in Appendix K (see K.6); - MODIFY the analytical procedures in Appendix K (see K.7); - MODIFY the reagents and materials in Appendix L; ADD the absolute ethanol (see L.3.2); - MODIFY the instruments and equipment in Appendix L; USE the digital thickness gauge to replace the Vernier caliper (see L.4.3); - MODIFY the analytical procedures in Appendix L (see L.5); - MODIFY the results calculation and data processing in Appendix L (see L.6); - MODIFY the sensitivity of the electronic balance in instruments and equipment in Appendix M to “0.0001 g” (see M.3.1); - In Appendix M, DELETE that the “25 cm3 measuring cylinder is mainly used to measure powders with a bulk density of more than 4 g/cm3” (see M.3.2.2 of the 2009 edition); - MODIFY the Table of bulk density and powder amount in the analytical procedures of Appendix M (see M.4.2); - DELETE the original Appendix D, Appendix N, Appendix O (see 2009 edition). This standard was proposed by the China Iron and Steel Association. This standard shall be under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC 183). Drafting organizations of this standard. Shenzhen Beiterui New Energy Materials Co., Ltd., Guangdong Dongdao New Energy Co., Ltd., Beiterui (Jiangsu) New Materials Technology Co., Ltd., Huizhou Beiterui New Material Technology Co., Ltd., Shanxi Beiterui New Energy Technology Co., Ltd., Tianjin Beiterui New Energy Materials Co., Ltd., Metallurgical Industry Information Standards Institute. The main drafters of this standard. He Xueqin, Chen Nanmin, Zhou Haihui, Yue Min, Huang Youyuan, Ren Jianguo, Zheng Jingxu, Wu Qixiu, Yan Huiqing, Wang Hongjing, Xiao Wei, Zhou Chengkun, Zhang Qinglai, Mao Aiping, Zhou Huijian, Zheng Haichi, Zhang Jinying, Miao Yanli, Li Shoubin, Wang Peichu, Geng Linhua, Zhou Haomao. This standard replaces the standard previously issued as follows. - GB/T 24533-2009. Graphite negative electrode materials for lithium ion battery1 ScopeThis standard specifies the terms and definitions, classification and code, technical requirements, test methods and inspection rules for graphite negative electrode materials for lithium ion battery. This standard applies to graphite-based negative electrode materials used as negative electrodes for lithium ion batteries.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 1427 Sampling method for carbon material GB/T 3120 Nickel wire GB/T 3521 Method for chemical analysis of graphite GB/T 3782 Acetylene black GB/T 4369 Lithium GB/T 5187 Foil of copper and copper alloy GB/T 6388 Sign for transport packaging receipt and delivery GB/T 6682 Water for analytical laboratory use - Specification and test methods GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 9724 Chemical reagent - General rule for the determination of pH GB/T 19587 Determination of the specific surface area of solids by gas adsorption using the BET method GB/T 26125 Electrical and electronic products - Determination of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers) EPA 8260C.2006 Volatile organic compounds by gas chromatography/mass spectrometry (GC/MS) EPA 5021.1996 Volatile organic compounds, oils and other solid matrices using equilibrium headspace analysis3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Graphite negative electrode materials for lithium ion battery The graphite negative electrode material for lithium ion battery adopts a carbon material with a graphite crystalline layer structure, which synergizes with the positive electrode material in a certain system to realize multiple charging and discharging of the lithium ion battery. In the charging process, the graphite negative electrode receives the insertion of lithium ion; whilst in the discharging process, it realizes the release of the lithium ion. Note. The theoretical capacity of graphite negative electrode materials is 372 (mA • h)/g, the color is gray black or steel ash, with a metallic luster.4 Classification and code4.1 Classification of products 4.1.1 Categories of graphite negative electrode material for lithium ion battery. a) Natural graphite, expressed by NG. b) Artificial graphite, represented by AG, which is divided into the following three types. 1) Carbon micro bead, expressed by CMB; 2) Needle coke artificial graphite, expressed by NAG; 3) Common petroleum coke artificial graphite, expressed by CPAG. c) Composite graphite, a graphite material containing at least two components of natural graphite and artificial graphite, expressed by CG. 4.1.2 The grades of the graphite negative electrode materials for lithium ion battery are as shown in Table 1.5 Technical requirements5.1 Appearance The powder which has a grayish black or steel ash, with a metallic luster. 5.2 Physical and chemical indicators The physical and chemical indicators of graphite negative electrode materials for lithium ion batteries shall comply with the requirements of Table 1.If there are special requirements, the supplier and the purchaser shall determine it by negotiation. Tables 3, 4, 5 are typical product specifications.6 Test methods6.1 Appearance Visual observation under natural light conditions. 6.2 Particle size distribution It is determined according to the provisions of Appendix A. 6.3 Moisture It is determined according to the provisions of Appendix B or GB/T 3521. 6.4 pH It is determined according to the provisions of Appendix C. 6.5 Fixed carbon content It is determined according to the provisions of GB/T 3521. 6.6 Specific surface area It is determined according to the provisions of GB/T 19587. 6.7 True density It is determined according to the provisions of Appendix D. 6.8 Inter-layer spacing d002 and graphitization degree It is determined according to the provisions of Appendix E. 6.9 Graphite orientation (reference indicator) It is determined according to the provisions of Appendix F. 6.10 First Coulomb efficiency It is determined according to the provisions of Appendix G. 6.11 First discharge specific capacity It is determined according to the provisions of Appendix G. 6.12 Trace metal elements It is determined according to the provisions of Appendix H. 6.13 F-, Cl-, SO42-, NO3-, Br- ion indicator It is determined according to the provisions of Appendix I. 6.14 Sulfur content It is determined according to the provisions of Appendix J.7 Inspection rules7.1 Sampling method 7.1.1 Sampling and sample preparation shall be carried out in accordance with the provisions of GB/T 1427.The stainless-steel sampling braze is stainless steel of grade 316 or equivalent, the diameter is not more than 30 mm, the length is 500 mm ~ 700 mm. 7.1.2 After the sample is placed in the plastic sample can, it shall attach a sign to its outer wall, which indicate the following contents. a) Sample category and number; b) Overall material lot number and quantity; c) Amount of sample; d) Date of sampling; e) Name of sampler. 7.1.3 Samples shall be preserved in a sealed form and stored in an environment that is resistant to breakage, rain exposure, moisture. The spare sample has a storage period of 18 months. 7.2 Classification of inspections 7.2.1 Exit-factory inspection. After the particle size, carbon content, moisture, tap density, powder compaction density, specific surface area, trace elements (iron, sodium, chromium, copper, nickel, aluminum, molybdenum), magnetic substances (iron + chromium + nickel + zinc + cobalt), first discharge specific capacity, first coulombic efficiency of each batch pass the inspection, chop the quality inspection seal. 7.2.2 Type inspection. All technical requirements as specified in this standard shall be inspected. Type inspection is performed in one of the following cases. - When the models of raw material, supplier, etc. are changed; - When there is a change in the production process; - When the production equipment is shut down for more than half a year and production is started again; - When the customer has special requirements. 7.3 Acceptance rules 7.3.1 The product complies with all the technical indicators in Table 1, Table 3, Table 4 and Table 5 as qualified products. If one of the indicators does not meet the requirements of this standard, it shall be doubled from the sampling bag of the same batch of products for re-inspection of the unqualified items. If all the re-inspections are qualified, it is qualified; if one item fails, it is unqualified. 7.3.2 The manufacturer shall ensure that the exit-factory products meet the requirements as stipulated in this standard. Each batch of products shall be accompanied by an inspection report when exit-factory. 7.3.3 The re-inspection period of the consignee shall be two months. If there is any objection, it shall be double-sampled and re-inspected. If there is still dispute, it shall be inspected by a qualified third-party testing agency.8 Packaging, marking8.1 The packaging and marking of the product shall comply with the provisions of GB/T 191.The net weight shall be negotiated between the supplier and the purchaser. 8.2 The packaging shall be carried out under dry conditions. The product is first placed into a waterproof packaging bag (PE sealed bag, aluminum plastic sealed bag is recommended). Special packaging requirements are agreed upon by the supplier and the purchaser. 8.3 The packaged product is then packaged by the outer packaging material, which is agreed by the supplier and the purchaser. 8.4 The marking shall comply with the provisions of GB/T 6388, and generally shall include the following contents, or may be marked according to customer needs.9 Storage and transportation9.1 The product shall be stored in a ventilated, dry warehouse. 9.2 The product stack shall be neat and clean; the production lot number and other signs shall be clearly identifiable. 9.3 Avoid the product from being stored and transported together with other articles which may deteriorate the product or damage the package. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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