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Issue 2, 2014
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2,2′-Bis(3-hydroxy-1,4-naphthoquinone)/CMK-3 nanocomposite as cathode material for lithium-ion batteries

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Abstract

An inorganic–organic nanocomposite with the filling of 2,2′-bis(3-hydroxy-1,4-naphthoquinone) (H2bhnq) in the pores of CMK-3 mesoporous carbon, which was synthesized by a simple impregnation method, was employed as a new cathode material for rechargeable lithium-ion batteries (LIBs). The characterization of the nanocomposite by wide-angle and low-angle X-ray diffraction, Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed the efficient loading of H2bhnp within the nanosized pores of CMK-3 carbon. The nanocomposite delivered an initial discharge capacity of 308.6 mAh g−1 at 0.1 C rate and a capacity retention of 202.6 mAh g−1 after 50 cycles. The reversible capacities were 124.0 mAh g−1 at a higher rate of 10 C. The enhanced cycling stability and high-rate capability is attributed to the fact that neat H2bhnq was distributed in the nanochannels of the conductive carbon framework CMK-3. This constrains the dissolution of the embedded H2bhnq. The results imply that the nanoconfinement with the pores of inorganic materials such as CMK-3 to fill organic active materials is important to improve the electrochemical performance of lithium-ion batteries.

Graphical abstract: 2,2′-Bis(3-hydroxy-1,4-naphthoquinone)/CMK-3 nanocomposite as cathode material for lithium-ion batteries

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Supplementary files

Article information


Submitted
18 Oct 2013
Accepted
18 Nov 2013
First published
28 Jan 2014

Inorg. Chem. Front., 2014,1, 193-199
Article type
Paper
Author version available

2,2′-Bis(3-hydroxy-1,4-naphthoquinone)/CMK-3 nanocomposite as cathode material for lithium-ion batteries

H. Li, W. Duan, Q. Zhao, F. Cheng, J. Liang and J. Chen, Inorg. Chem. Front., 2014, 1, 193
DOI: 10.1039/C3QI00076A

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