标题:Potassium pre-inserted K1.04Mn8O16 as cathode materials for aqueous Li-ion and Na-ion hybrid capacitors
作者:Zhang Y.; Chen L.; Hao C.; Zheng X.; Guo Y.; Chen L.; Lai K.; Zhang Y.;等
作者机构:[Zhang, Y] Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Ministry of Education), School of Materials Science and Eng 更多
通讯作者:Chen, L(linachen@hit.edu.cn)
通讯作者地址:[Chen, L] Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Ministry of Education), School of Materials Science and Engi 更多
来源:Journal of Energy Chemistry
出版年:2020
卷:46
页码:53-61
DOI:10.1016/j.jechem.2019.10.015
关键词:Electrochemical behavior; K1.04Mn8O16; Li-ion hybrid capacitors; Na-ion hybrid capacitors; Pre-inserted
摘要:For the applications of aqueous Li-ion hybrid capacitors and Na-ion hybrid capacitors, potassium ions are pre-inserted into MnO2 tunnel structure, the as-prepared K1.04Mn8O16 materials consist of nanoparticles and nanorods were prepared by facile high-temperature solid-state reaction. The as-prepared materials were well studied and they show outstanding electrochemical behavior. We assembled hybrid supercapacitors with commercial activated carbon (YEC-8A) as anode and K1.04Mn8O16 as cathode. It shows high energy and power densities. Li-ion capacitors reach a high energy density of 127.61 Wh kg−1 at the power density of 99.86 W kg−1 and Na-ion capacitor obtains 170.96 Wh kg−1 at 133.79 W kg−1. In addition, the hybrid supercapacitors demonstrate excellent cycling performance which maintain 97% capacitance retention for Li-ion capacitor and 85% for Na-ion capacitor after 10,000 cycles. © 2019
收录类别:SCOPUS
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075012390&doi=10.1016%2fj.jechem.2019.10.015&partnerID=40&md5=ff2f9262ff15a09f4bbdd7b03f7afa23
TOP