超级电容器
杂原子
材料科学
碳纤维
化学工程
电化学
生物量(生态学)
电极
纳米技术
电容
功率密度
兴奋剂
制作
复合数
化学
有机化学
复合材料
光电子学
替代医学
物理化学
海洋学
病理
工程类
功率(物理)
量子力学
医学
戒指(化学)
物理
地质学
作者
Zehong Chen,Haihong Lai,Hao Zhuo,Yu Lin Zhong,Linxin Zhong,Xinwen Peng
标识
DOI:10.1186/s42825-023-00122-w
摘要
Abstract Renewable and low-cost biomass is an ideal sustainable alternative to petroleum-based resources, but producing biomass-based carbon electrode with high performances remains a challenge. Herein, we propose a facile self-assembly strategy to fabricate a biomass-derived N, S co-doping carbon electrode from lignosulfonate without any activation or template process. Taking advantage of the coordination between Fe ions and lignosulfonate, the resultant carbon exhibits a spherical structure with abundant graphitized nanosheets, leading to a high specific surface area with rational pore structure, which are beneficial to the electron/ion transport and storage. The high contents of doping N (8.47 wt%) and S (2.56 wt%) significantly boost the electrochemical performances. As a supercapacitor electrode, the carbon material displays high specific capacitance of 390 F g −1 , excellent cycling stability and high energy density of 14.7 W h kg −1 at a power density of 450 W kg −1 . This study provides a potential strategy for synthesizing cost-effective heteroatom-doped carbon materials from biomass with abundant functional groups and heteroatom sources, such as chitosan, collagen, and gelatin. Graphical Abstract
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