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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：校长助理
其他任职：精细化工国家重点实验室副主任，辽宁省低碳资源高值化利用重点实验室主任
性别：男
毕业院校：中科院山西煤化所
学位：博士
所在单位：化工学院
学科：工业催化. 化学工艺. 能源化工
办公地点：大连市凌工路2号大连理工大学西部校区化工楼，邮编：116024
联系方式：0411-84986112
电子邮箱：anhuilu@dlut.edu.cn
Combination of a SnO2-C hybrid anode and a tubular mesoporous carbon cathode in a high energy density non-aqueous lithium ion capacitor: preparation and characterisation
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论文类型：期刊论文
发表时间：2014-05-14
发表刊物：JOURNAL OF MATERIALS CHEMISTRY A
收录刊物：SCIE、EI、Scopus
卷号：2
期号：18
页面范围：6549-6557
ISSN号：2050-7488
摘要：Lithium ion capacitors (LICs), bridging supercapacitors and lithium ion batteries (LIBs), have recently drawn considerable attention. In this report, a non-aqueous LIC was fabricated using tubular mesoporous carbon as a cathode and a SnO2-C hybrid (ultrafine SnO2 encapsulated in the tubular mesoporous carbon) as an anode. Such a LIC can achieve a maximum energy density of 110W kg(-1) and a maximum power density of 2960 W kg(-1). The capacitance retention is fairly stable and retains 80% of its initial value after 2000 cycles. This unique performance arises because of the highly conductive tubular mesoporous carbon matrix and fast charge/ion diffusion in the SnO2-C hybrid anode. It is shown that the SnO2 loading in the anode has a great influence on the stability of the SnO2 nano-structure and the kinetics of lithium ion transfer. Electrochemical impedance spectroscopy (EIS) was used to evaluate the charge transfer resistance and the ionic diffusion resistance before and after long-term cycling. The diffusion coefficient was also calculated to verify the good rate and cycling capability.