电催化剂
材料科学
介孔材料
催化作用
微型多孔材料
钴
多孔性
金属有机骨架
析氧
限制电流
化学工程
比表面积
碳纤维
电化学
传质
纳米技术
化学
电极
复合材料
复合数
有机化学
吸附
物理化学
色谱法
工程类
冶金
作者
Lanke Luo,Jingshen Xu,Qing Wan,Yiting Han,Mingxuan Li,Dai Cui,Runxuan Chen,Zi Kang Tang,Xuefeng Cui,Xin Xin,Xinchang Li,Ye Xiang,Haishu Dong,Lin Liu,Zemin Sun,Genban Sun
标识
DOI:10.1002/asia.202300946
摘要
Metal-organic frameworks (MOFs) and their derivatives have been extensively employed in Oxygen Evolution Reaction (OER) catalysts due to their significantly larger specific surface areas, distinct metal centers, and well-organized porous structures. However, the microporous structure of MOFs and their derivatives presents mass transfer resistance, limiting their further development. Drawing inspiration from hierarchical structures allowing for the transport and exchange of substances in the biological world, we designed and fabricated biomimetic layered porous structures within ZIF-67 and its derivatives. Based on this, we achieved a three-dimensional ordered layered porous nitrogen-doped carbon-coated magnetic cobalt catalyst (3DOLP Co@NDC) with a biomimetic pore structure. It is found that the 3DOLP Co@NDC (352 mV @10 mA cm-1) was better than Co@NDC (391 mV @10 mA cm-1). The introduction of a three-dimensional ordered layered porous structure is conducive to increasing the specific surface area of the material, increasing the electrochemical active area, and improving the catalytic performance of the material. The introduction of a three-dimensional ordered layered porous structure would help to build a bionic grade pore structure. The existence of biomimetic grade pore structure can effectively reduce the mass transfer resistance, improve the material exchange efficiency, and accelerate the reaction kinetics.
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