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.

在这项研究中，一种新型的3D多孔碳（3DPC）材料已被设计并以金属有机骨架为前体合成。所得的3DPC具有较高的比表面积和较大的孔体积，可大大增加接触面积，缩短离子扩散途径并改善循环时的离子动力学。当用作负极材料的钠离子电池（SIB）的使用，3DPC显示满意的电化学性能用的284毫安g的高的最大可逆容量^-1在50mA g的电流密度在100次循环之后^-1，优异的倍率性能具有高即使在2.5 A g ^-1的高电流密度下也可得到125 mAh g ^-1的可逆容量以及3000个循环的强大长期循环稳定性，在1 A g ^-1下具有175 mAh g ^-1的显着容量，显示出高性能SIB的巨大潜力。这项工作提供了一种从金属有机骨架构造多孔碳质材料的新方法。