High-performance sodium batteries with the 9,10-anthraquinone/CMK-3 cathode and an ether-based electrolyteElectronic supplementary information (ESI) available: Test measurement of prepared materials, SEM images of AQ/CMK-3 with selected mass ratios of AQ to CMK-3, NaPF6 dissolution experiment and electrochemical performance AQ and AQ/CMK-3 in sodium batteries. See DOI: 10.1039/c5cc02251g

We here report a much improved electrochemical performance of sodium batteries with the 9,10-anthraquinone (AQ) cathode encapsulated in CMK-3, an ether-based electrolyte of high-concentration CF 3 SO 3 Na (NaTFS) as a sodium salt in triethylene glycol dimethyl ether (TEGDME) solvent, and the Na anode. We here report a much improved electrochemical performance of sodium batteries with the 9,10-anthraquinone cathode encapsulated in CMK-3 and an ether based electrolyte with high salt concentration.