银杏叶基锂离子电池炭负极材料制备及电化学性能研究  

Preparation and Electrochemical Performance of Ginkgo Leaf Based Hard Carbon Lithium Ion Battery Negative Electrode Materials

作　　者：刘大龙 安玉良[1] 孙超群 孔汉文 谢驰 袁霞[1] LIU Dalong;AN Yuliang;SUN Chaoqun;KONG Hanwen;XIE Chi;YUAN Xia(School of Material Science and Engineering,Shenyang Ligong University,Shenyang Liaoning 110159,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159

出　　处：《辽宁化工》2024年第7期990-992,996,共4页Liaoning Chemical Industry

基　　金：辽宁省百千万人才项目(项目编号:2021921035);沈阳理工大学材料加工工程重点学科开放基金(项目编号:20210302)。

摘　　要：以银杏叶为基质制备锂离子电池负极材料,采用活化剂FeCl_(3)对银杏叶(GL)浸渍,通过不同温度进行碳化处理,并且对于银杏叶基负极材料的电化学性能进行探究。通过FeCl_(3)活化可以改善银杏叶生物质炭的孔结构,实验考察不同活化温度考察对产物结构和性能的影响,得到最优活化温度为600℃。制备出的产品在电流密度0.1A·g^(-1),电压为0.01~3.0V条件下首次放电比容量和首次库伦效率分别为:941 mAh·g^(-1),61.63%。30圈充放电循环后的放电比容量和库伦效率分别为:453.5 mAh·g^(-1),98.75%。The preparation and property of the anode materials of Li ion battery were carried out by carbonization of Ginkgo biloba leaves(GL)using FeCl_(3) as activation agent.The effect of carbonization temperature on the structure and the electrochemical performance of anode materials was systemically explored.The results demonstrated that the pore structure of anode materials from Ginkgo biloba leaf was improved at the optimized temperature 600℃.The first discharge specific capacity and first Coulombic efficiency of as-prepared product were 941 mAh·g^(-1) and 61.63%,respectively under a current density of 0.1 A·g^(-1) and a voltage range of 0.01~3.00 V.The specific discharge capacity and Coulombic efficiency of anode materials were 453.5 mAh·g^(-1) and 98.75%respectively after 30 cycles of charging and discharging.

关 键 词：银杏叶 活化 负极材料 FeCl_(3) 

分 类 号：TQ138[化学工程—无机化工]