Li-Ion Capacitor Integrated with Nano-network-Structured Ni/NiO/C Anode and Nitrogen-Doped Carbonized Metal-Organic Framework Cathode with High Power and Long Cyclability

Chung Fu Cheng, Yu Ming Chen, Feng Zou, Kewei Liu, Yanfeng Xia, Yi Fan Huang, Wei Yao Tung, Mohan Raj Krishnan, Bryan D. Vogt, Chien Lung Wang, Rong Ming Ho, Yu Zhu

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Lithium-ion capacitors (LICs) represent a new type of energy-storage devices, which have combined merits of high energy density Li-ion battery and high power density supercapacitor. Nevertheless, one significant challenge for LICs is the imbalanced kinetics between the fast capacitive cathode and relatively slow intercalation anode that limit the energy-storage performance. Here, the asymmetric LIC devices were developed based on a nitrogen-doped, carbonized zeolitic imidazolate framework (ZIF-8) cathode and a three-dimensional, nano-network-structured, conversion reaction-based Ni/NiO/C anode. These nanostructures associated with both the cathode and anode enable rapid electron and ions transport in the LIC devices, which allows the asymmetric LICs to be operated on either high energy mode (energy density of 114.7 Wh/kg at power density of 98.0 W/kg) or high power mode (power density of 60.1 kW/kg at energy density of 17.6 Wh/kg). The device also exhibited long-term cycle stability with 87% capacitance retention after 12 000 cycles. These results demonstrate that the rational design of nanoporous electrode structures can deliver a balanced, high-performance-activated cZIF-8|Ni/NiO/C-based lithium-ion capacitor.

Original languageEnglish (US)
Pages (from-to)30694-30702
Number of pages9
JournalACS Applied Materials and Interfaces
Volume11
Issue number34
DOIs
StatePublished - Aug 28 2019

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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