Abstract
Abstract In this study, a novel 3D porous carbon (3DPC) materials have been designed and synthesized from metal-organic frameworks as precursors. The resultant 3DPC exhibits high specific surface area and large pore volume, which can largely increase contact area, shorten ion diffusion pathways and improve ion kinetics upon cycling. When used as anode materials for sodium ions batteries (SIBs), 3DPC shows satisfied electrochemical performance with a high maximum reversible capacity of 284 mAh g−1 after 100 cycles at a current density of 50 mA g−1, excellent rate capability with a high reversible capacity of 125 mAh g−1 can be obtained even at a high current density of 2.5 A g−1 and robust long-term cycling stability for 3000 cycles with a remarkable capacity of 175 mAh g−1 at 1 A g−1, showing great potential for high-performance SIBs. This work provides a new approach for constructing porous carbonaceous materials from metal-organic frameworks.
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