【摘要】 研究了不同热处理温度的石油焦在lmol/L LiClO₄/EC+DEC（体积比为l:1）电解液体系中作为锂离于二次电池负极的充放电行为,探讨了石油焦的结构与其充放电特性的关系,并用原位—X射线衍射（in situ—XRD）测定了充放电过程中Li-C石墨层间化合物的阶转变。更多还原

【Abstract】 Electrochemical behaviors of one kind of petroleum cokes prepared at different heat treatment temperatures (HTT)as negative electrode for lithium ion secondary batteries were investigated. The electrolyte solution was 1mol/L LiClO4 in a mixture (1:1 by volume)of ethylene carbonate (EC) and diethyl carbonate (DEC). The relationship between the structure and charge-discharge characteristics of the petroleum coke was discussed and the stage transition of the lithium - graphite intercalation compound was determined by in situ -X ray diffraction (in situ -XRD).更多还原