Two-dimensional calcium terephthalate as a low-cost, high-performance anode for sodium-ion batteries.

Two-dimensional calcium terephthalate flakes with a thickness of 100-300 nm have been synthesized via adjusting the water : ethanol volume ratio in the solvothermal method. As anodes for sodium-ion batteries, 2D sheet electrodes possess fast kinetics and thus display superior cycling capacity and high-rate capability (195 mA h g -1 at 1000 mA g -1 ).