Zeolitic imidazolate framework-7 textile-derived nanocomposite fibers as freestanding supercapacitor electrodes
- Authors
- Joshi, Bhavana; Park, Sera; Samuel, Edmund; Jo, Hong Seok; An, Seongpil; Kim, Min-Woo; Swihart, Mark T.; Yun, Je Moon; Kim, Kwang Ho; Yoon, Sam S.
- Issue Date
- 1-2월-2018
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Electrospinning; Metal-organic frameworks; ZIF7; Supercapacitor; Nanoporous carbon
- Citation
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v.810, pp.239 - 247
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY
- Volume
- 810
- Start Page
- 239
- End Page
- 247
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/77407
- DOI
- 10.1016/j.jelechem.2018.01.012
- ISSN
- 1572-6657
- Abstract
- Zeolitic imidazole frameworks (ZIFs) are a class of metal organic frameworks (MOFs) with diverse energy-related applications. High-surface area materials derived from ZIFs can serve as electrodes with good long-term capacity retention. Herein, we demonstrate an electrospun ZIF7/carbon nanofiber (CNF) derived nanocomposite as a freestanding electrode for supercapacitors with excellent capacitance retention. The optimal ZIF7 composite nanofiber carbonized at 950 degrees C exhibited a specific capacitance of 202 F.g(-1) at a current density of 1 kg(-1) and similar to 98% specific capacitance retention after 5000 charge-discharge cycles. N-doped nanoporous C and the Zn framework of ZIF7 composite fibers delivered an energy density of 42 W.h.kg(-1) at a power density of 0.6 kW.kg(-1). These scalable ZIF7/CNF composite textiles (30 x 10 cm(2)) can be used as freestanding super capacitor electrodes without a separate substrate or current collector.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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