Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China.
Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China.
J Colloid Interface Sci. 2017 Jul 1;497:350-358. doi: 10.1016/j.jcis.2017.03.037. Epub 2017 Mar 7.
Currently, metal-organic frameworks (MOFs) and their derivates have attracted great interest as a new kind of electrode material for energy storage devices, mainly due to their designable framework structures, abundant pore structures, adjustable pore and particle sizes. In this work, porous CuO/reduced graphene oxide (RGO) composites were obtained through the pyrolysis of Cu-based MOFs/graphene oxide under microwave irradiation, and investigated as anode materials for sodium-ion batteries (SIBs). CuO/RGO composites exhibit a maximum specific capacity of 466.6mAhg after 50 galvanostatic charge/discharge cycles at a current density of 100mAg. Even at a high current density of 2Ag, a capacity of 347.6mAhg is still maintained with stable cycling. The superior electrochemical performance, which is better than those of CuO-based electrodes reported previously, makes the CuO/RGO composites to be applied promisingly as anodes for high-performance SIBs.
目前，金属-有机骨架（MOFs）及其衍生物作为一种新型储能器件的电极材料引起了极大的关注，这主要是因为它们具有可设计的骨架结构、丰富的孔结构、可调的孔和颗粒尺寸。在这项工作中，通过在微波辐射下热解铜基 MOFs/氧化石墨烯，得到了多孔 CuO/还原氧化石墨烯（RGO）复合材料，并将其作为钠离子电池（SIBs）的阳极材料进行了研究。CuO/RGO 复合材料在 100mAg 的电流密度下经过 50 次恒电流充放电循环后，具有最大的 466.6mAhg 的比容量。即使在 2Ag 的高电流密度下，仍能保持 347.6mAhg 的容量和稳定的循环性能。这种优越的电化学性能优于以前报道的基于 CuO 的电极，使得 CuO/RGO 复合材料有望作为高性能 SIBs 的阳极材料得到应用。
