H
Heejoon Ahn
Researcher at Hanyang University
Publications - 81
Citations - 2515
Heejoon Ahn is an academic researcher from Hanyang University. The author has contributed to research in topics: Supercapacitor & X-ray photoelectron spectroscopy. The author has an hindex of 24, co-authored 80 publications receiving 2069 citations. Previous affiliations of Heejoon Ahn include University of Massachusetts Lowell & University of Illinois at Urbana–Champaign.
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Journal ArticleDOI
Unusual energy storage and charge retention in Co-based metal–organic-frameworks
Deok Yeon Lee,Seog Joon Yoon,Nabeen K. Shrestha,Nabeen K. Shrestha,Soo-Hyoung Lee,Heejoon Ahn,Sung-Hwan Han +6 more
TL;DR: In this article, the cobalt-based metal-organic-frameworks (Co-MOF) was explored as a promising material for supercapacitors and a good pseudocapacitor behavior with the specific capacitance up to 206.76 F ǫ n−1.
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Chemical synthesis and electrochemical analysis of nickel cobaltite nanostructures for supercapacitor applications
TL;DR: The NiCo2O4/ITO films are used as electrodes for supercapacitor applications, and electrochemical properties of the NiCo 2O4 nanostructures are examined by cyclic voltammetry and charge-discharge experiments.
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Hierarchical patterns of three-dimensional block-copolymer films formed by electrohydrodynamic jet printing and self-assembly
M. Serdar Onses,Chiho Song,Chiho Song,Lance Williamson,Lance Williamson,Erick Sutanto,Placid M. Ferreira,Andrew G. Alleyne,Paul F. Nealey,Paul F. Nealey,Heejoon Ahn,Heejoon Ahn,John A. Rogers +12 more
TL;DR: It is demonstrated that an ultrahigh-resolution jet printing technique that exploits electrohydrodynamic effects can pattern large areas with block-copolymers based on poly(styrene-block-methyl methacrylate) with various molecular weights and compositions.
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Aligned nickel-cobalt hydroxide nanorod arrays for electrochemical pseudocapacitor applications
TL;DR: In this article, a one-step, seedless and cost-effective route for fabricating pseudocapacitive materials in 3-D form was proposed for fabrication of nanorod arrays, which showed a specific capacitance of 456 F g−1 with an energy density of 12.8 W h kg−1.
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Electrochemical performance of a coaxial fiber-shaped asymmetric supercapacitor based on nanostructured MnO2/CNT-web paper and Fe2O3/carbon fiber electrodes
TL;DR: In this article, a coaxial fiber-shaped asymmetric supercapacitor (CFASC) made from MnO2/CNT-web paper as a cathode coupled with Fe2O3/carbon fiber as an anode with a high operating voltage of 2.2