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Inorganic-organic nanocomposites Calix[4]quinone (C4Q)/CMK-3 as cathode materials for high-capacity sodium batteries

Abstract

With the concept of grid-scale energy storage systems (ESSs), organic sodium-ion batteries (OSIBs), combined the merits of SIBs and the advantages of organic materials are promising candidates for new stage commercial batteries. Organic cathode materials of Calix[4]quinone (C4Q) in LIBs have delivered high initial capacity of 422 mAh g-1. However, its sodium storage property remains unclear. Here, a series of C4Q/ordered mesoporous carbon (CMK-3) nanocomposites have been firstly prepared by simple perfusion methods and employed as cathode materials for rechargeable sodium batteries. Systematic characterizations including scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) have been carried out, which demonstrated that C4Q was almost completely parasitized in the nano-pores of the CMK-3 when its content was lower than 66 wt%. The optimized nanocomposite with 33 wt% C4Q exhibits superior initial discharge capacity up to 438 mAh g-1 at 0.1C rate and a capacity retention of 219.2 mAh g-1 after 50 cycles. The enhanced cycling stability and high-rate capability is attributed to the nanosize effect and the good conduction of CMK-3. This constrains the dissolution of the embedded active materials. Our results enrich the family of inorganic-organic nanoconfinement cathode materials for high capacity sodium batteries.

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Publication details

The article was received on 01 Aug 2017, accepted on 03 Sep 2017 and first published on 06 Sep 2017


Article type: Research Article
DOI: 10.1039/C7QI00453B
Citation: Inorg. Chem. Front., 2017, Accepted Manuscript
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    Inorganic-organic nanocomposites Calix[4]quinone (C4Q)/CMK-3 as cathode materials for high-capacity sodium batteries

    S. Zheng, J. Hu and W. Huang, Inorg. Chem. Front., 2017, Accepted Manuscript , DOI: 10.1039/C7QI00453B

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