An inorganic–organic nanocomposite calix[4]quinone (C4Q)/CMK-3 as a cathode material for high-capacity sodium batteries. Issue 11 (27th September 2017)

• Record Type: Journal Article
• Authors: Zheng, Shibing; Hu, Jinyan; Huang, Weiwei
• Is Part Of: Inorganic chemistry frontiers. Volume 4:Issue 11(2017)
• Page Start: 1806
• Page End: 1812
• Publication Date: 2017-09-27
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7qi00453b
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : A novel high-capacity cathode material C4Q/CMK-3 for SIBs shows an initial discharge capacity of 438 mA h g −1 and a capacity retention of 219.2 mA h g −1 after 50 cycles. Abstract : Based on the concept of grid-scale energy storage systems (ESSs), organic sodium-ion batteries (OSIBs), combining the merits of SIBs and the advantages of organic materials, are promising candidates for the new stage of commercial batteries. Organic cathode materials of calix[4]quinone (C4Q) in LIBs have delivered a high initial discharge capacity of 422 mA h 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 characterization including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Brunauer–Emmett–Teller (BET) analysis has been carried out, which demonstrated that C4Q was almost completely infused in the nano-pores of CMK-3 when its content was lower than 66 wt%. The optimized nanocomposite with 33 wt% C4Q exhibits a superior initial discharge capacity up to 438 mA h g −1 at 0.1C rate and a capacity retention of 219.2 mA h g −1 after 50 cycles. The enhanced cycling stability and high-rate capability are 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.