竹子衍生碳材料的制备及其储能性能研究
Preparation of bamboo-derived carbon material and its energy storage properties
曾晓辉 1夏志宇 2余洪强 2邓哲文 3邹继兆3
作者信息
- 1. 深圳市飞荣达科技股份有限公司 深圳 518060
- 2. 再生资源综合利用联合研究所 深圳 518060
- 3. 深圳大学材料学院 深圳 518060
- 折叠
摘要
以生物质天然竹子和活化剂KOH为原料,采用碳化后活化的方法制备Bam-KOHx多孔碳材料.通过调控前驱体Bam与活化剂KOH的质量比,优化样品的孔道结构.氮气吸脱附测试显示,当Bam与KOH的质量比为1∶5时,材料具有最大的比表面积(1371.9 m2 g-1)、最大的微孔体积.拉曼光谱显示了 Bam-KOH5具有最高的缺陷程度.在电化学测试中,Bam-KOH5在1 A g-1电流密度下放电比容量为446 F g-1,进一步增大电流密度至50 A g-1时,容量剩余率仍达55％,表现出优异的电化学性能;Bam-KOH5在10000次循环充放后,放电容量剩余率仍保持为92.4％,表现出良好的稳定性,说明该材料为良好的超级电容器电极材料.
Abstract
Bam-KOHx porous carbon materials were prepared from biomass natural bamboo and activator KOH by carbonization fol-lowed by activation.The pore structure of the samples can be optimized by regulating the mass ratio of precursor Bam to activator KOH.Nitrogen adsorption and desorption tests showed that the material had the largest specific surface area(1371.9 m2 g-1)and the largest microporous volume when the mass ratio of Bam to KOH was 1∶5.Raman spectroscopy showed that Bam-KOH5 had the highest degree of defects.In electrochemical tests,the discharge specific capacity of Bam-KOH5 was 446 F g-1 at a current density of 1 A g-1,and when the current density was further increased to 50 A g-1,the capacity residual was still 55％,which showed excellent electrochemical per-formance;after 10000 cyclic charging and discharging cycles,the discharge capacity residual of Bam-KOH5 still remained 92.4％,which showed good stability,indicating that this material is a good supercell.This indicates that the material is a good electrode material for supercapacitors.
关键词
超级电容器/生物质衍生碳材料/多孔结构/储能性能Key words
supercapacitor/biomass derived carbon materials/porous structure/energy storage performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据