纳米笼
析氧
电催化剂
十二面体
过电位
材料科学
氢氧化物
催化作用
沸石咪唑盐骨架
纳米技术
碳纳米管
化学工程
化学
无机化学
金属有机骨架
结晶学
物理化学
电极
吸附
有机化学
电化学
工程类
作者
Meng Li,Yu-Jie Huang,Jiaqi Lin,Meize Li,Mengqi Jiang,Linfei Ding,Dongmei Sun,Kai Huang,Yawen Tang
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-03-20
卷期号:12 (6): 1015-1015
被引量:4
摘要
Proper control of a 3d transition metal-based catalyst with advanced structures toward oxygen evolution reaction (OER) with a more feasible synthesis strategy is of great significance for sustainable energy-related devices. Herein, carbon nanotube interconnected NiCo layered double hydroxide rhombic dodecahedral nanocages (NiCo-LDH RDC@CNTs) were developed here with the assistance of a feasible zeolitic imidazolate framework (ZIF) self-sacrificing template strategy as a highly efficient OER electrocatalyst. Profited by the well-fined rhombic dodecahedral nanocage architecture, CNTs' interconnected characteristic and structural feature of the vertically aligned nanosheets, the as-synthesized NiCo-LDH RDC@CNTs integrated large exposed active surface areas, enhanced electron transfer capacity and multidimensional mass diffusion channels, and thereby collaboratively afforded the remarkable electrocatalytic performance of the OER. Specifically, the designed NiCo-LDH RDC@CNTs exhibited a distinguished OER activity, which only required a low overpotential of 255 mV to reach a current density of 10 mA cm-2 for the OER. For the stability, no obvious current attenuation was detected, even after continuous operation for more than 27 h. We certainly believe that the current extraordinary OER activity combined with the robust stability of NiCo-LDH RDC@CNTs enables it to be a great candidate electrocatalyst for economical and sustainable energy-related devices.
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