Cerium-Based Metal-Organic Framework Nanocrystals Interconnected by Carbon Nanotubes for Boosting Electrochemical Capacitor Performance

Cheng Hui Shen, Cheng Hsun Chuang, Yu Juan Gu, Wei Huan Ho, Yi Da Song, Yu Chuan Chen, Yi Ching Wang, Chung Wei Kung

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, nanocrystals of a cerium-based metal-organic framework (Ce-MOF), Ce-MOF-808, are directly grown on the surface of carboxylic acid-functionalized carbon nanotubes (CNTs) by a facile one-step solvothermal synthesis method. Ce-MOF-CNT nanocomposites with various Ce-MOF-to-CNT ratios are synthesized, and their crystallinity, morphology, porosity, and electrical conductivity are examined. The redox-hopping and electrochemical behaviors of the pristine Ce-MOF in aqueous electrolytes are investigated, suggesting that the pristine Ce-MOF is electrochemically active but possesses a limited charge-transport behavior. As a demonstration, all the Ce-MOF, CNT, and nanocomposites are used as active materials for application in aqueous-based supercapacitors. The capacitive performance of the CNT can be significantly boosted with the help of redox-active Ce-MOF-808 nanocrystals.

Original languageEnglish
Pages (from-to)16418-16426
Number of pages9
JournalACS Applied Materials and Interfaces
Volume13
Issue number14
DOIs
Publication statusPublished - 2021 Apr 14

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Fingerprint Dive into the research topics of 'Cerium-Based Metal-Organic Framework Nanocrystals Interconnected by Carbon Nanotubes for Boosting Electrochemical Capacitor Performance'. Together they form a unique fingerprint.

Cite this