青岛科技大学  English 
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副教授 硕士生导师  

教师拼音名称:yujianhua

学历:博士研究生

学位:工学博士

职称:副教授

毕业院校:中科院上海硅酸盐研究所

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2020-06-08 青岛科技大学毕业生最喜爱的老师

2019-12-31 青岛科技大学先进工作者

2016-12-31 青岛科技大学先进工作者

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Economic prosperity of developing flixweed seeds-derived porous carbon for ultrahigh-performance supercapacitors

关键字:ACTIVATED CARBON; SURFACE-AREA; BIOMASS; NANOSHEETS; NITROGEN; CAPACITANCE; OXYGEN; CHALLENGES; NANOTUBES; OIL

摘要:The fabrication of carbon materials with low cost and high performance is the main challenge in wide appli-cations of supercapacitors. In this work, facile carbonization and chemical activation processes are developed to convert flixweed seeds to hierarchical porous carbon with large specific surface area and self-doped ample heteroatoms (e.g., nitrogen, sulfur and oxygen). The obtained carbon material demonstrates several advantages in supercapacitors, such as ultrahigh specific capacitance of 662.4 F g-1 at 0.5 A g-1 and long cycling life > 12,000 cycles at 20 A g-1. A symmetric supercapacitor based on the resulting carbon delivers a high energy density of 34 W h kg-1 at 1000 W kg-1 in 1 M Na2SO4. Therefore, flixweed seeds can be economically utilized for large-scale production of porous carbon with excellent supercapacitance performance.

卷号:128

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