电源技术2025，Vol.49Issue(5)：946-950,5.DOI:10.3969/j.issn.1002-087X.2025.05.008
锂电池负极包覆沥青炭化机理分析及应用性能研究
Analysis of carbonization mechanism and application performance of coating-pitch in lithium battery anode material
摘要
Abstract
Pitch coating modification serves as an effective means to enhance the electrochemical per-formance of graphite anode.The pyrolysis characteristics of pitch and the carbonized structure have a direct impact on the electrochemical properties of anode materials.The electrochemical perfor-mance of modified graphite is mainly concerned.However,the pyrolysis characteristics,rheological properties,wettability and carbonization structure of pitch are analyzed,which explains its mecha-nism in the coating process.The results show that the carbonization process of pitch can be divided into three stages.The low-temperature weight loss stage primarily involves the volatilization of low molecular weight gases,the medium-temperature rapid weight loss stage marks the intense pyrolysis of molecules,and the high-temperature weight loss stage is mainly the polycondensation of macromo-leculars.An amorphous carbon material with short-range order,long-range disorder and certain mi-crocrystalline structure is formed,which improves the electrochemical behavior of natural graphite in batteries.关键词
包覆沥青/炭化/负极材料/电化学性能Key words
coating-pitch/carbonization/anode material/electrochemical performance分类
动力与电气工程引用本文复制引用
李臣泽,焦亚平,刘颖,徐维哲,曹鹏..锂电池负极包覆沥青炭化机理分析及应用性能研究[J].电源技术,2025,49(5):946-950,5.基金项目
中国石化重点科技项目(124002) （124002）
