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:graphene; functionalization; electrochemical performance
摘要:Superior capacitance of carboxyl functionalized and surfactant-intercalated graphene were prepared by a relatively simple with two-step solution-based processing technique. In comparison to pristine graphene, surface carboxyl functionalization and surfactant intercalation can tailor its specific capacitance from 50 F/g to 230 F/g. Meanwhile, the modified materials retain more than 95% of their capacitance after 800 charge-discharge cycles, demonstrating good cyclic stability. Surfactant itself cannot improve the performance of pristine graphene as graphene intercalated with surfactant has a specific capacitance of 45 F/g, however, carboxyl groups can dramatically enhance specific capacitance to 130 F/g. The excellent performance of functionalized graphene emphasizes the importance of controlling its surface chemistry.
卷号:31
期号:2
是否译文:否