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
邮箱:
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
最后更新时间:..
关键字:Carbon;Capacitance - Carbonization - Electrodes - Metals - Porous materials - Potassium hydroxide - Supercapacitor
摘要:With the shortage of energy and increasing environmental pollution, it is urgent to produce cheap and efficient carbon electrode materials for supercapacitors. The special structure of biomass carbon is beneficial for deposition of functional nanoparticles and improvement in supercapacitance. In this work, a simple method is developed for carbonization and activation of alkali-treated wheat flour, and a porous carbon with a three-dimensional network structure is obtained. The porous carbon electrode exhibits a high specific capacitance of 161.4 F g<sup>−1</sup> at the current density of 0.5 A g<sup>−1</sup> in 2 M KOH. Further, Co<inf>3</inf>O<inf>4</inf> supported on porous carbon with excellent supercapacitance is synthesized. The composite demonstrates an enhanced specific capacitance of 232.9 F g<sup>−1</sup> under the conditions above, and an excellent capacitance retention capability (80.35%) after 1000 cycles. The results show that metal oxide supported on biomass-derived porous carbon has great potential application as electrode materials for supercapacitors.<br/> © 2018 The Electrochemical Society.
卷号:7
期号:10
是否译文:否