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A Hierarchically Porous ZIF@LDH Core‐Shell Structure for High‐Performance Supercapacitors
Author(s) -
Zhao Zhimin,
Duan Huiyu,
Pang Huan,
Zhu Rongmei
Publication year - 2021
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202100087
Subject(s) - supercapacitor , microporous material , materials science , porosity , capacitance , hydroxide , electrochemistry , chemical engineering , polystyrene , nanocomposite , metal organic framework , nanotechnology , shell (structure) , electrode , composite material , chemistry , organic chemistry , polymer , engineering , adsorption
Designing nanocomposites with good electrochemical properties is one of the challenges in constructing supercapacitors. Adjustable metal‐organic frameworks (MOFs) have potential research value in improving charge storage and transfer due to their multi‐porosity. Moreover, MOFs can serve as a precursor to various derivatives. Herein, a series of core‐shell structures with macro‐microporous ZIF‐67 (M‐ZIF‐67) as the core and layered double hydroxide (LDH) as the shell were synthesized based on polystyrene spheres (PSs) template via a simple ion etching method. As a result, the sample of M‐ZIF‐67@LDH4 shows a specific capacitance of 597.6 F g −1 at 0.5 A g −1 and a high rate retention of 92% at 3 A g −1 .