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 FeCl3 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FeCl3 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0.1 A·g-1,电压为0.01～3.0 V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%.
Abstract
The preparation and property of the anode materials of Li ion battery were carried out by carbonization of Ginkgo biloba leaves(GL)using FeCl3 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.
基金项目
辽宁省百千万人才项目(2021921035)
沈阳理工大学材料加工工程重点学科开放基金(20210302)
维普
万方数据