生物遗态分级孔结构碳负极材料及其储锂性能  

Biomorphic Hierarchical Porous Carbon Prepared from Orange Peels as High-Performance Anode for Lithium Ion Batteries

作　　者：王庆[1,2,3] 罗绍华[1,2,3] 张亚辉[1,2,3] 王志远[1,2,3] 刘延国[1,2,3] 郝爱民[1,2,3] 王玮[1,2,3] 林明卫 

机构地区：[1]东北大学材料科学与工程学院,辽宁沈阳110004 [2]东北大学秦皇岛分校资源与材料学院,河北秦皇岛066004 [3]河北省电介质与电解质功能材料重点实验室,河北秦皇岛066004

出　　处：《陶瓷学报》2017年第3期315-318,共4页Journal of Ceramics

基　　金：国家自然科学基金资助(51374056;51404055;51571054;51674068);河北省自然科学基金--钢铁联合研究基金(E2014501143);河北省高等学校科学技术研究项目(QN2017103);东北大学秦皇岛分校校内科技支撑项目(XNK201410)

摘　　要：以橙子皮为原材料,通过高温热解制备出具有分级多孔结构的生物遗态碳材料,并以这种碳材料作为锂离子电池负极考察其电化学性能。研究表明,橙子皮基碳为无定型碳材料,从SEM照片可以看出,其具有相互连通的蜂窝状孔结构,孔径约在1-4μm。BET测得的比表面积约为52 m^2·g^(-1)。以橙子皮碳为原材料制备锂离子电池负极,在电流密度100 mAg^(-1)下,具有832 m Ahg^(-1)、393 mAhg^(-1)的首次放充电比容量,首次循环库伦效率为47.2%。200次循环后比容量仍保持在343 mAhg^(-1),库伦效率在95%以上,在2 Ag^(-1)的电流密度下仍具有149 mAhg^(-1)的比容量。The biomorphic hierarchical porous carbon was prepared from orange peels by high temperature pyrolysis, and its electrochemical perpromance was measured as anode for lithium ion battery. The results suggest that the samples prepared from orange peels were amorphous carbon, and possessed connected alveolate structures and specific surface area of 52 m2.g1. The biomorphic hierarchical carbon was used as an anode for lithium ion batteries and delivered an initial specific discharge and charge capacities of 832 and 393 mAhg-1 at 100 mAg~ with a coulombic efficiency of 47.2%. After 200 cycles the carbon anode retained a reversible capacity of 343 mAhg~ with a coulombic efficiency above 95%. The high reversible capacity of 149 mAhg~ was observed at the current density of 2 Ag-1, which was ascribed to the hierarchical porous structures of biomorphic carbon.

关 键 词：生物遗态材料 锂离子电池 分级孔结构 负极材料 

分 类 号：TQ174.75[化学工程—陶瓷工业]