材料科学
层状双氢氧化物
电化学
金属有机骨架
超级电容器
化学工程
纳米技术
氢气储存
混合材料
钴
电化学能量转换
硫化物
氢氧化物
电极
无机化学
复合材料
冶金
化学
有机化学
吸附
物理化学
工程类
合金
作者
Gamze Yilmaz,Kah Meng Yam,Chun Zhang,Hong Jin Fan,Ghim Wei Ho
标识
DOI:10.1002/adma.201606814
摘要
Direct adoption of metal‐organic frameworks (MOFs) as electrode materials shows impoverished electrochemical performance owing to low electrical conductivity and poor chemical stability. In this study, we demonstrate self‐templated pseudomorphic transformation of MOF into surface chemistry rich hollow framework that delivers highly reactive, durable, and universal electrochemically active energy conversion and storage functionalities. In situ pseudomorphic transformation of MOF‐derived hollow rhombic dodecahedron template and sulfurization of nickel cobalt layered double hydroxides (NiCo‐LDHs) lead to the construction of interlayered metal sulfides (NiCo‐LDH/Co 9 S 8 ) system. The embedment of metal sulfide species (Co 9 S 8 ) at the LDH intergalleries offers optimal interfacing of the hybrid constituent elements and materials stability. The hybrid NiCo‐LDH/Co 9 S 8 system collectively presents an ideal porous structure, rich redox chemistry, and high electrical conductivity matrix. This leads to a significant enhancement in its complementary electrocatalytic hydrogen evolution and supercapacitive energy storage properties. This work establishes the potential of MOF derived scaffold for designing of novel class hybrid inorganic–organic functional materials for electrochemical applications and beyond.
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