Facile synthesis of hierarchically self-assembled dandelion-like microstructures of bimetallic-MOF as a novel electrode material for high-rate supercapacitors
Facile synthesis of hierarchically self-assembled dandelion-like microstructures of bimetallic-MOF as a novel electrode material for high-rate supercapacitors
复制标题
DOI：
10.1016/j.matlet.2020.128616
复制
发表时间：
2020-12-15
影响因子：
3
通讯作者：
Shen, Zhihao
中科院分区：
文献类型：
--
作者：
Cai, Zhiming;Deng, Lianbing;Shen, Zhihao
金属有机骨架(MOF)作为储能电极材料，由于具有较大的孔隙率和较高的比表面积而备受关注。本文采用一锅法在泡沫镍表面制备了一种新型的蒲公英结构自组装针状双金属MOF(金属=铋钼；BM-MOF)，并将其直接用作超级电容器电极。制备的BM-MOF在10Ag(-1)时的比容量为476Cg(-1)，在10~100Ag(-1)的倍率性能为43%，在10Ag(-1)的高放电负载下8000次循环后容量保持率为95.1%。这些数据验证了制作的BM-MOF是适合于电荷存储目的的候选材料。提出了一种制备各种双金属有机骨架的绿色合成方法--简易电化学法。(C)2020爱思唯尔B.V.保留所有权利。
Metal-organic frameworks (MOFs) have gained immense attention as electrode materials for energy storage applications, because of their large porosity as well as high surface area. In this work, a novel needle-like bimetallic MOF (metal = bismuth and molybdenum; BM-MOF) self-assembled in dandelion structure is successfully prepared through a one-pot cathodic electrodeposition route onto nickel foam and directly used as supercapacitor electrode. The fabricated BM-MOF showed a high specific capacity of 476 C g(-1) at 10 A g(-1), proper rate capability of 43% (from 10 to 100 A g(-1)) as well as superior cycling performance of 95.1% capacity retention after 8000 cycles at high discharging load of 10 A g(-1). These data verified that the fabricated BM-MOF is suitable candidate for charge storage aims. The simple developed electrochemical method is suggested as green synthesis method for fabrication of various bimetallic metal organic frameworks. (C) 2020 Elsevier B.V. All rights reserved.