MOF-Derived Zn/N-Doped Porous Carbon Film on a Carbon Nanotube for High-Performance Supercapacitors.
Xiang-Zong WuRui-Qiu WuZi-Tong LinXuan ChenJian-Hua HuDe-Jing LiPublished in: Inorganic chemistry (2024)
Designing high-performance binder-free electrochemical electrodes is crucially important toward supercapacitors. In this paper, a Zn/N-doped porous carbon film coating on flexible carbon nanotubes (ZIF-8@CT-800) derived from the epitaxial Zn-MOF film growth on cotton textile was successfully fabricated via a combination of the liquid-phase epitaxial (LPE) method and calcination treatments. The ZIF-8@CT-800 serves directly as a self-supported electrode for supercapacitors and exhibits a high areal capacitance of 930 mF·cm -2 at a current density of 1 mA·cm -2 and a good recyclability of 86% after 2000 cycles. The excellent supercapacitor property is ascribed to the unique structural design of ZIF-8@CT-800, which provides appropriate channels for enhanced electronic and ionic transport as well as increased surface area for accessing more electrolyte ions. This work will provide significant guidance for designing MOF-derived porous carbon to construct flexible binder-free electrode materials with high electrochemical performance.
Keyphrases
- carbon nanotubes
- metal organic framework
- reduced graphene oxide
- solid state
- gold nanoparticles
- ionic liquid
- image quality
- dual energy
- computed tomography
- contrast enhanced
- heavy metals
- quantum dots
- room temperature
- positron emission tomography
- magnetic resonance imaging
- molecularly imprinted
- mass spectrometry
- simultaneous determination