8 Papers
Wonjun Na is an academic researcher from Korea Institute of Science and Technology. The author has contributed to research in topics: Ionic liquid & Lithium-ion capacitor. The author has an hindex of 7, co-authored 8 publications. Previous affiliations of Wonjun Na include Yonsei University.
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Papers
Nanoscale magnetism control via surface and exchange anisotropy for optimized ferrimagnetic hysteresis
Seung Hyun Noh,Wonjun Na,Jung Tak Jang,Jae Hyun Lee,Eunjung Lee,Seung Ho Moon,Yongjun Lim,Jeon Soo Shin,Jinwoo Cheon +8 more
TL;DR: It is visualize that cube has higher magnetization value than sphere with highest coercivity at 60 nm, and its hybridization into core-shell (CS) structure brings about a 14-fold increase in the coercivity with an exceptional energy conversion of magnetic field into thermal energy, the largest reported to date.
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Binder-less chemical grafting of SiO2 nanoparticles onto polyethylene separators for lithium-ion batteries
Wonjun Na,Ki Hwan Koh,Albert S. Lee,Sangho Cho,Byoeri Ok,Byoeri Ok,Suk Won Hwang,Jin Hong Lee,Chong Min Koo,Chong Min Koo +9 more
TL;DR: In this paper, a polyethylene separator was chemically grafted with SiO2 nanoparticles to improve the adhesion strength, thermal stability and electrochemical performance of a polyolefin separator.
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Lithium Dendrite Suppression with UV-Curable Polysilsesquioxane Separator Binders
Wonjun Na,Wonjun Na,Albert S. Lee,Jin Hong Lee,Seung Sang Hwang,Eunkyoung Kim,Soon Man Hong,Chong Min Koo +7 more
TL;DR: For the first time, an inorganic-organic hybrid polymer binder was used for the coating of hybrid composites on separators to enhance thermal stability and to prevent formation of lithium dendrite in lithium metal batteries.
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Lithium ion capacitors fabricated with polyethylene oxide-functionalized polysilsesquioxane hybrid ionogel electrolytes
Wonjun Na,Wonjun Na,Albert S. Lee,Jin Hong Lee,Seung Sang Hwang,Soon Man Hong,Eunkyoung Kim,Chong Min Koo +7 more
TL;DR: In this paper, a ladder-like structured poly(poly(ethylene oxide)-co-methacryloxypropyl)silsesquioxane) (PEO-SQ) hybrid-type polymer gelator was presented to fabricate hybrid ionogel electrolytes for lithium ion capacitors.
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Hybrid ionogel electrolytes with POSS epoxy networks for high temperature lithium ion capacitors
Wonjun Na,Wonjun Na,Albert S. Lee,Jin Hong Lee,Soon Man Hong,Eunkyoung Kim,Chong Min Koo,Chong Min Koo +7 more
TL;DR: In this paper, a thermally curable hybrid ionogel electrolytes consisting of epoxy-functionalized POSS, amine-terminated polypropylene glycol, and ionic liquid electrolyte, 1 M LiTFSI in BMPTFSI were fabricated to give ionic conducting epoxy networks with cubic inorganic star networks crosslinked with lithium ion dissociating polyethylene glycol linkers.
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