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Jung-Gu Han

Researcher at Ulsan National Institute of Science and Technology

Publications -  30
Citations -  2130

Jung-Gu Han is an academic researcher from Ulsan National Institute of Science and Technology. The author has contributed to research in topics: Electrolyte & Lithium. The author has an hindex of 19, co-authored 27 publications receiving 1513 citations.

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Journal ArticleDOI

Understanding voltage decay in lithium-excess layered cathode materials through oxygen-centred structural arrangement

Seungjun Myeong, +11 more
- 16 Aug 2018 - 
TL;DR: A multilateral and macroscopic analysis that considers interaction between oxygen and atomic arrangement of Li1+xNiyCozMn1−x−y−zO2 provides the insight into the degradation chemistry of cathode materials and a way to develop high-energy density electrodes.
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Tunable and robust phosphite-derived surface film to protect lithium-rich cathodes in lithium-ion batteries.

Jung-Gu Han, +5 more
- 08 Apr 2015 - 
TL;DR: This investigation revealed that the TMSP-derived surface layer can overcome the significant capacity fading of the Li-rich cathode by structural instability ascribed to an irreversible phase transformation from layered to spinel-like structures.
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Mechanisms for electrochemical performance enhancement by the salt-type electrolyte additive, lithium difluoro(oxalato)borate, in high-voltage lithium-ion batteries

Jiho Cha, +4 more
- 31 Jul 2017 - 
TL;DR: In this paper, LiDFOB with one oxalate moiety bonded to a central boron core was employed as a salt-type additive to enhance the interfacial stabilities of high-voltage Li-rich cathodes and graphite anodes.
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Single-step wet-chemical fabrication of sheet-type electrodes from solid-electrolyte precursors for all-solid-state lithium-ion batteries

Dae Yang Oh, +5 more
- 10 Oct 2017 - 
TL;DR: In this article, a scalable single-step fabrication of bendable sheet-type composite electrodes for ASLBs using a one-pot slurry prepared from SE precursors (Li2S and P2S5), active materials (LiNi0.6Co0.2Mn 0.2O2 or graphite), and polymeric binders (nitrile-butadiene rubber (NBR) or polyvinyl chloride (PVC)) via a wetchemical route using tetrahydrofuran.
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Using a lithium bis(oxalato) borate additive to improve electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathodes at 60 °C

Se-Young Ha, +6 more
- 01 Aug 2013 - 
TL;DR: In this paper, LiBOB was used as an additive for the stabilization of a high-voltage cathode-electrolyte interface, and the electrochemical performance of Li/LiNi 0.5 Mn 1.5 O 4 cells with a Li-BOB additive was improved at 60°C.