Premium
In Situ Transformation of MOFs into Layered Double Hydroxide Embedded Metal Sulfides for Improved Electrocatalytic and Supercapacitive Performance
Author(s) -
Yilmaz Gamze,
Yam Kah Meng,
Zhang Chun,
Fan Hong Jin,
Ho Ghim Wei
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201606814
Subject(s) - materials science , layered double hydroxides , electrochemistry , chemical engineering , metal organic framework , hydroxide , supercapacitor , cobalt , hydrogen storage , hybrid material , electrochemical energy conversion , sulfide , nanotechnology , inorganic chemistry , electrode , composite material , metallurgy , organic chemistry , chemistry , adsorption , engineering , alloy
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.