Relationship between initial efficiency and structure parameters of carbon anode material for Li-ion battery

• Published in: Journal of Central South University of Technology. Science & technology of mining and metallurgy Vol. 15; no. 4; pp. 484 - 487
• Main Authors: Shen, Jian-bin, Tang, You-gen, Liang, Yi-zeng, Tan, Xin-xin
• Format: Journal Article
• Language: English
• Published: Changsha Central South University 01.08.2008
• Subjects: Engineering; Metallic Materials; Li-ion battery; initial efficiency; carbon anode material; structure parameters
• ISSN: 1005-9784; 1993-0666
• DOI: 10.1007/s11771-008-0091-y

The initial efficiency is a very important criterion for carbon anode material of Li-ion battery. The relationship between initial efficiency and structure parameters of carbon anode material of Li-ion battery was investigated by an artificial intelligence approach called Random Forests using D 10 , D 50 , D 90 , BET specific surface area and TP density as inputs, initial efficiency as output. The results give good classification performance with 91% accuracy. The variable importance analysis results show the impact of 5 variables on the initial efficiency descends in the order of D 90 , TP density, BET specific surface area, D 50 and D 10 ; smaller D 90 and larger TP density have positive impact on initial efficiency. The contribution of BET specific surface area on classification is only 18.74%, which indicates the shortcoming of BET specific surface area as a widely used parameter for initial efficiency evaluation.