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:Manganese oxide;Digital storage - Electric discharges - Electrochemical properties - Nanostructures - Potash - Supercapacitor
摘要:In this paper, MnO<inf>2</inf> with four different structures (nanosandwiches, microsticks, nanowires and microflowers) are synthesized through varying reaction conditions, including the concentration of KMnO<inf>4</inf> solution and hydrothermal reaction temperature. Through comparing experimental data, it can be concluded that the microstructure of MnO<inf>2</inf> plays a vital role in electrochemical performance. Among the four structures, the microflower has the largest specific surface area for more electroactive sites, and thus demonstrates an excellent charge storage performance of 185 F/g at a current density of 0.5 A/g and cycling stability with a capacitance retention rate of 85% and a coulombic efficiency of nearly 100% after 10,000 charge-discharge cycles.<br/> © 2019 Elsevier B.V.
卷号:848
期号:无
是否译文:否