GB/T 38823-2020 PDF EnglishUS$260.00 · In stock · Download in 9 seconds
GB/T 38823-2020: Silicon-carbon Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 38823-2020: Silicon-carbon---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/GBT38823-2020NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.050 Q 50 Silicon-carbon 硅炭 Issued on. JUNE 02, 2020 Implemented on. DECEMBER 01, 2020 Issued by. State Administration for Market Regulation; Standardization Administration of the PRC. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 5 4 Classification and code... 5 5 Technical requirements... 6 5.1 Appearance... 6 5.2 Physical and chemical indicators... 6 6 Test methods... 7 6.1 Appearance... 7 6.2 Particle size distribution... 7 6.3 Specific surface area... 7 6.4 Tap density... 7 6.5 Carbon content... 7 6.6 Silicon content... 7 6.7 Compaction density... 7 6.8 Moisture content... 7 6.9 Magnetic impurities... 7 6.10 Content of trace metal elements... 7 6.11 Initial discharge specific capacity and initial coulombic efficiency... 7 6.12 Regulated substances... 7 7 Inspection rules... 8 7.1 Sampling method... 8 7.2 Inspection classification... 8 7.3 Acceptance rules... 9 8 Packaging, marking, storage, and transportation... 9 8.1 Packaging... 9 8.2 Marking... 9 8.3 Storage and transportation... 10 Appendix A (Normative) Determination method of carbon content... 11 Appendix B (Normative) Determination method of silicon content... 14 Appendix C (Normative) Determination method for the content of trace metal elements ... 17 Appendix D (Normative) Determination method of initial discharge specific capacity and initial coulombic efficiency... 20ForewordThis Standard is drafted in accordance with the rules given in GB/T 1.1-2009. This Standard was proposed by China Iron and Steel Association. This Standard shall be under the jurisdiction of National Technical Committee 183 on Steel of Standardization Administration of China (SAC/TC 183). Drafting organizations of this Standard. BTR New Material Group Co., Ltd., Huizhou Dingyuan New Energy Technology Co., Ltd., China Automotive Battery Research Institute Co., Ltd., Shenzhen Sinuo Industrial Development Co., Ltd., China Metallurgical Information and Standardization Institute. Main drafters of this Standard. He Xueqin, He Peng, Chen Nanmin, Ren Jianguo, Yue Min, Huang Youyuan, Wang Yuhui, Guo Eming, Zhang Qinglai, Mao Aiping, Yang Lianbo, Zheng Jingxu, Bao Haiyou, Yu Zhanglong, Yang Juanyu, Zhao Shangqian. Silicon-carbon1 ScopeThis Standard specifies the terms and definitions, classification and code, technical requirements, test methods, inspection rules, packaging, marking, transportation, and storage of silicon-carbon. This Standard applies to all kinds of silicon-carbon anode materials for lithium-ion batteries.2 Normative referencesThe following documents are indispensable for the application of this document. For the dated references, only the editions with the dates indicated are applicable to this document. For the undated references, the latest edition (including all the amendments) are applicable to this document. GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1.Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (apply to inspection of process stability) GB/T 3782 Acetylene black GB/T 4369 Lithium GB/T 5187 Copper and copper alloy foil GB/T 6388 Transport package shipping mark3 Terms and definitionsThe following term and definition applies to this document. 3.1 Silicon-carbon Composite powder material composed of silicon material and carbon material. The synergistic effect of silicon-carbon and cathode materials in a certain system can realize multiple charging and discharging of lithium-ion batteries.4 Classification and codeThe products are classified according to their initial discharge specific capacity; mainly divided into five categories.5 Technical requirements5.1 Appearance Gray-black powder material, without agglomeration. 5.2 Physical and chemical indicators The physical and chemical indicators of silicon-carbon shall meet the requirements in Table 1.6 Test methods6.1 Appearance Visually observe under natural light conditions. 6.2 Particle size distribution Determine according to GB/T 19077.Test conditions. Refractive index 2.61. 6.3 Specific surface area Determine according to GB/T 19587. 6.4 Tap density Determine according to GB/T 24533. 6.8 Moisture content Determine according to GB/T 24533. 6.9 Magnetic impurities Determine according to GB/T 33827. 6.10 Content of trace metal elements Determine according to Appendix C. 6.11 Initial discharge specific capacity and initial coulombic efficiency Determine according to Appendix D. 6.12 Regulated substances Determine according to GB/T 26125.7 Inspection rules7.1 Sampling method 7.1.1 Sampling Silicon-carbon is sampled according to GB/T 13732 “General rules for sampling inspection of bulk materials with uniform size”. 7.1.2 Sample label After the sample is placed in the plastic sample jar, a label shall be attached to the outer wall. The label shall include the following. 7.1.3 Storage of samples The samples shall be sealed and stored in an environment protected from bag break, rain and moisture. The effective storage period of spare samples is 12 months. 7.2 Inspection classification 7.3 Acceptance rules 7.3.1 Products that meet the requirements of technical indicators in Table 1 are conformity products. If there is 1 indicator that fails to meet the requirements of the standard, double number of samples shall be taken from the sampling bag of the same lot of products, to re-inspect the nonconformity item. If all the re-inspections are conformity, it will be judged as conformity. If one item is nonconformity, it will be judged as nonconformity.8 Packaging, marking, storage, and transportation8.1 Packaging 8.1.1 The packaging of the product shall comply with the provisions of GB/T 191.The net weight shall be negotiated by both the supplier and the purchaser. 8.2 Marking The marking shall comply with the provisions of GB/T 6388.It shall generally include the following contents. It can also be marked according to customer needs. 8.3 Storage and transportation 8.3.1 Products shall be stored in a ventilated and dry warehouse. 8.3.2 The stacking of products shall be neat and clean. Marks such as production lot numbers shall be clearly identifiable. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 38823-2020 be delivered?Answer: The full copy PDF of English version of GB/T 38823-2020 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 38823-2020_English with my colleagues?Answer: Yes. 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