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Issue 19, 2017
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Unveiling two-dimensional TiS2 as an insertion host for the construction of high energy Li-ion capacitors

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Abstract

Herein, we report, for the first time, the possibility of using TiS2 as an insertion host for the fabrication of high energy and high power Li-ion capacitors with commercial activated carbon (AC). The Li-insertion and PF6 adsorption/desorption properties are determined using Li in TiS2 and AC electrodes, respectively, which is very useful to balance the mass loading between the electrodes to realize maximum energy. Under balanced loading, the AC/TiS2 based LIC delivers a maximum energy density of ∼49 W h kg−1. Upon long-term cycling, the AC/TiS2 based LIC experiences a marginal fade in density; specifically ∼76% of its initial value is retained after 2000 cycles. Prior to this, a nearly 100% crystalline TiS2 insertion host was prepared via chemical vapor transport with high yield.

Graphical abstract: Unveiling two-dimensional TiS2 as an insertion host for the construction of high energy Li-ion capacitors

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Publication details

The article was received on 21 Feb 2017, accepted on 11 Apr 2017 and first published on 12 Apr 2017


Article type: Paper
DOI: 10.1039/C7TA01594A
Citation: J. Mater. Chem. A, 2017,5, 9177-9181
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    Unveiling two-dimensional TiS2 as an insertion host for the construction of high energy Li-ion capacitors

    A. Chaturvedi, P. Hu, V. Aravindan, C. Kloc and S. Madhavi, J. Mater. Chem. A, 2017, 5, 9177
    DOI: 10.1039/C7TA01594A

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