Zobrazeno 1 - 10 of 188 pro vyhledávání: '"Hun‐Gi Jung"'
1
Akademický článek
Impact of Transition Metal Layer Vacancy on the Structure and Performance of P2 Type Layered Sodium Cathode Material
Autor: Orynbay Zhanadilov, Sourav Baiju, Natalia Voronina, Jun Ho Yu, A-Yeon Kim, Hun-Gi Jung, Kyuwook Ihm, Olivier Guillon, Payam Kaghazchi, Seung-Taek Myung
Publikováno v: Nano-Micro Letters, Vol 16, Iss 1, Pp 1-19 (2024)
Highlights Vacancy in the transition metal layer of sodium cathode material induces the formation lone-pair electrons in the O 2p orbital. Material delivers more capacity from the oxygen redox validated by density functional calculation. Widened domi
Externí odkaz: https://doaj.org/article/5da6d41edb2e4d149f780149ceef52c6
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3
Akademický článek
Quasi-compensatory effect in emerging anode-free lithium batteries
Autor: Peng Li, Hun Kim, Jun Ming, Hun-Gi Jung, Ilias Belharouak, Yang-Kook Sun
Publikováno v: eScience, Vol 1, Iss 1, Pp 3-12 (2021)
As electric vehicle (EV) sales grew approximately 50% year-over-year, surpassing 3.2 million units in 2020, the “roaring era” of EV is around the corner. To meet the increasing demand for low cost and high energy density batteries, anode-free con
Externí odkaz: https://doaj.org/article/0b26554c31d64dc7aed2a524811a2288
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5
Akademický článek
Multiscale Understanding of Covalently Fixed Sulfur–Polyacrylonitrile Composite as Advanced Cathode for Metal–Sulfur Batteries
Autor: Mohammad Shamsuddin Ahmed, Suyeong Lee, Marco Agostini, Min‐Gi Jeong, Hun‐Gi Jung, Jun Ming, Yang‐Kook Sun, Jaekook Kim, Jang‐Yeon Hwang
Publikováno v: Advanced Science, Vol 8, Iss 21, Pp n/a-n/a (2021)
Abstract Metal–sulfur batteries (MSBs) provide high specific capacity due to the reversible redox mechanism based on conversion reaction that makes this battery a more promising candidate for next‐generation energy storage systems. Recently, alon
Externí odkaz: https://doaj.org/article/d69848de92c94d3998521f4cb691c888
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6
Akademický článek
Deactivation of redox mediators in lithium-oxygen batteries by singlet oxygen
Autor: Won-Jin Kwak, Hun Kim, Yann K. Petit, Christian Leypold, Trung Thien Nguyen, Nika Mahne, Paul Redfern, Larry A. Curtiss, Hun-Gi Jung, Sergey M. Borisov, Stefan A. Freunberger, Yang-Kook Sun
Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
Redox mediators can enhance redox reactions in Li-O2 batteries; however, their gradual degradation remains unclear. Here the authors show that organic redox mediators are decomposed by singlet oxygen formed during cycling, indicating a strategy for t
Externí odkaz: https://doaj.org/article/ce9e0e2bb41d423b97ecd95aacce31f8
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7
Akademický článek
Configuring PSx tetrahedral clusters in Li-excess Li7P3S11 solid electrolyte
Autor: Wo Dum Jung, Bin-Na Yun, Hun-Gi Jung, Sungjun Choi, Ji-Won Son, Jong-Ho Lee, Jong-Heun Lee, Hyoungchul Kim
Publikováno v: APL Materials, Vol 6, Iss 4, Pp 047902-047902-6 (2018)
We demonstrate that the Li-ion conductivity can be improved by adding a certain amount of Li (x = 0.25–0.5) as a charge carrier to the composition of glass-ceramic Li7+xP3S11. Structural analysis clarified that the structural changes caused by the
Externí odkaz: https://doaj.org/article/0ba3f8810ee24825bc491f541cc3742d
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