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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
| Content Provider | Semantic Scholar |
|---|---|
| Author | Qu, Wen-Hui Xing, Chao Qiao, Mo Li, Wen-Cui |
| Copyright Year | 2014 |
| Abstract | 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 110 W h 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. |
| Starting Page | 6549 |
| Ending Page | 6557 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C4TA00670D |
| Volume Number | 2 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/ta/c4/c4ta00670d/c4ta00670d1.pdf |
| Alternate Webpage(s) | https://ecs.confex.com/data/abstract/ecs/ecee2014/Paper_32778_abstract_12700_0.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C4TA00670D |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
