In-situ carbonization of zeolitic imidazolate framework-67 on Ni foam as binder-free electrode for energy storage

Hsiao Wen Huang, Yu Cheng Hsiao, Tzu Yang Chen, Sibidou Yougbaré, Lu Yin Lin, Yung Fu Wu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Zeolitic imidazolate framework-67 (ZIF67) derivatives are intensively applied as the active material of battery supercapacitor hybrids (BSH) as clean renewable energy. Binder-free electrodes without insulated binders possessing high electrical conductivity can be fabricated with less time and money. In this work, carbonized ZIF67 (C-ZIF67) is fabricated on Ni foam using in-situ binder-free technique. The C-ZIF67 electrode is applied as battery-type electrode of BSH for the first time. Using Ni foam as a conductive substrate of binder-free electrodes is beneficial for generating nickel compounds with multiple redox states. The electrocapacitive nitrogen-doped carbon can be generated from ZIF67 after thermal treatments. Carbonization temperature for synthesizing C-ZIF67 electrodes is optimized regarding morphology and defect to graphitic intensity ratios of C-ZIF67. The C-ZIF67 electrode prepared using 600 °C presents the highest specific capacitance (CF) of 914.0 F/g along with capacity of 126.9 mAh/g at 20 mV/s, due to tightly attached active material with favorable vertical grown sheet array on Ni form and suitable defect to graphitic intensity ratio. A BSH composed of reduce graphene oxide negative electrode and carbonized ZIF67 positive electrode presents a maximum energy density of 15.15 Wh/kg at 600 W/kg, and the CF retention of 71% and Coulombic efficiency higher than 85% after 6000 charge/discharge cycles.

Original languageEnglish
Article number106035
JournalJournal of Energy Storage
Volume56
DOIs
Publication statusPublished - Dec 2022

Keywords

  • Battery supercapacitor hybrid
  • Binder-free
  • Carbonization
  • Defect to graphitic intensity ratio
  • In-situ
  • Zeolitic imidazolate framework-67

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'In-situ carbonization of zeolitic imidazolate framework-67 on Ni foam as binder-free electrode for energy storage'. Together they form a unique fingerprint.

Cite this