Petroleum Refinery Engineering ›› 2025, Vol. 55 ›› Issue (1): 7-10.

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Experimental study on the evaluation of electrochemical performance of lithium-ion battery anode coke

Li Shiwen, Chu Renqing, Wei Jianjun, Guo Dan, Li Dan, Li Ruixiong, Zhang Yuanyuan   

  1. SINOPEC (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd., Dalian, Liaoning 116045; SINOPEC Jinling Company, Nanjing, Jiangsu 210033
  • Received:2024-10-09 Online:2025-01-16 Published:2025-02-08

锂离子电池负极专用焦电化学性能评价实验研究

李诗文，初人庆，卫建军，郭丹，李丹，李瑞雄，张媛媛   

  1. 中国石化（大连）石油化工研究院有限公司，辽宁省大连市 116045； 中国石油化工股份有限公司金陵分公司，江苏省南京市 210033
  • 作者简介:李诗文，助理研究员，博士，2023年毕业于中国科学院大连化学物理研究所物理化学专业，主要研究方向为锂离子电池负极专用焦的技术开发及构效关系。联系电话：17621038516，E-mail：lishiwen.fshy@sinopec.com。
  • 基金资助:
    中国石化科技部项目（122016）

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Abstract:

The electrochemical performance evaluation experiments were carried out on the lithium-ion battery anode coke, and the effects of particle size, graphitization temperature, slurry solid content, compacted density of pole piece, and battery sealing pressure on the first reversible specific capacity were investigated. The results show that for the same type of anode coke, the larger the particle size, the smaller the specific capacity; the increase in graphitization temperature leads to an increase in the specific capacity of lithium-ion batteries; the slurry solid content and compacted density should be selected moderately; the selection principle of battery sealing pressure is to minimize the risk of short-circuit caused by the deformation of the battery shell under the precondition of ensuring the sealing. This article investigates how these operating parameters affect the electrochemical performance of anode coke in detail, and summarizes the data intervals of the above parameters applicable to the testing of the electrochemical properties of anode coke.


Key words:

border:0px, font-size:14px, font-family:-apple-system, BlinkMacSystemFont, ", vertical-align:baseline, margin:0.859em 0px, color:#060607, background-color:#FFFFFF, "> lithium-ion battery, anode coke, first reversible specific capacity, particle size, slurry solid content, compacted density of pole piece, battery sealing pressure, graphitization temperature

摘要：

对锂离子电池负极专用焦进行了电化学性能评价实验，考察了粒径、石墨化温度、浆料固含量、极片压实密度和电池封口压力等参数对其首次可逆比容量的影响。结果表明：对于同一种负极专用焦，粒径越大，比容量越小；石墨化温度升高，锂离子电池的比容量增大；浆料固含量和极片压实密度需适中选取；电池封口压力的选取原则是在确保密封性的同时，规避电池壳体变形造成的短路风险。文中详细分析了上述参数对负极专用焦电化学性能的影响，并归纳了上述参数适用于负极专用焦电化学性能测试的数据区间。

关键词:

border:0px, font-size:14px, font-family:-apple-system, BlinkMacSystemFont, ", vertical-align:baseline, margin:0.859em 0px, color:#060607, background-color:#FFFFFF, "> 锂离子电池, 负极专用焦, 首次可逆比容量, 粒径, 浆料固含量, 极片压实密度, 电池封口压力, 石墨化温度