超级电容器
材料科学
碳纤维
化学工程
多孔性
微晶
储能
生物量(生态学)
电化学
电容
比表面积
热解
介孔材料
纳米技术
复合材料
化学
催化作用
有机化学
复合数
电极
地质学
工程类
物理化学
海洋学
功率(物理)
物理
量子力学
结晶学
作者
Jiangfeng Du,Haijun Lv,Yue Zhang,Aibing Chen
标识
DOI:10.1002/celc.202100286
摘要
Abstract Biomass‐derived porous carbons have become the most competitive electrode materials for energy storage devices due to their renewable and sustainability properties. However, the obtained porous carbon by direct pyrolysis of biomass generally has a low surface area and poor porosity, limiting its electrochemical performance. Herein, a silica‐confined activation strategy was used to prepare porous carbon with typical biomass microcrystalline cellulose (MCC) as carbon precursor (noted as MCPC). In this approach, the MCC was coated by silica to create a confined condition, in which the in‐situ generated gases of e. g., CO 2 , H 2 O, etc. can diffuse into the porous space to active the carbon framework, resulting in large specific surface area and rich mesoporous structure. Moreover, the influences of silica amount and pyrolysis temperature on MCPC was also investigated. As electrode materials, the MCPC showed excellent electrochemical performance with outstanding stability and high specific capacitance, endowing it with high promising for energy storage.
科研通智能强力驱动
Strongly Powered by AbleSci AI