Mesoporous cobalt 2,5-thiophenedicarboxylic coordination polymer for high performance Na-ion batteries

•Mesoporous flower-like Co-TDC coordination polymer was synthesized through a solvothermal method.•It delivers reversible capacity of 328mAhg−1 after 100 cycles when applied as anode material in SIBs.•Na-ions might be inserted into the organic moieties. Mesoporous flower-like Co-TDC coordination polymer was synthesized through a solvothermal method and applied as anode materials in Na-ion batteries for the first time. It delivers outstanding capacities of 328mAhg−1 after 100 cycles, thus outperforms many of the carbon-based materials for SIBs.