Zobrazeno 1 - 10 of 35 pro vyhledávání: '"Hosang Park"'
1
Counter anion effects on the energy density of Ni(II)-chelated tetradentate azamacrocyclic complex cation as single redox couple for non-aqueous flow batteries
Autor: Seung M. Oh, Hyun-seung Kim, Hosang Park, Ji Heon Ryu, Junyoung Mun, Seunghae Hwang
Publikováno v: Electrochimica Acta. 308:227-230
Tailoring the energy density of Ni(II)-chelated complex cation is accomplished by substituting various counter anions. Larger-sized anions are favored for increasing both the solubility and working voltage. The former advantage with larger-sized anio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a9c4e9ddd147b1790af947631488f6d
https://doi.org/10.1016/j.electacta.2019.04.027
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2
Ab initio study of the operating mechanisms of tris(trimethylsilyl) phosphite as a multifunctional additive for Li-ion batteries
Autor: Basab Roy, Hosang Park, Meiten Koh, Jin Hae Kim, Insun Park, Dong Young Kim, Jong Hwan Park, Woon Ih Choi, Seo Jinah, Yoon-Sok Kang
Publikováno v: Journal of Power Sources. 355:154-163
Tris(trimethylsilyl) phosphite (P(OSi(CH 3 ) 3 ) 3 ) is a multifunctional electrolyte additive for scavenging HF and forming a cathode electrolyte interphase (CEI). Systematic analysis of the HF reaction pathways and redox potentials of P(OSi(CH 3 )
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73b0c101c28f4574fe0605b25d746267
https://doi.org/10.1016/j.jpowsour.2017.04.062
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5
Mechanical Damage of Surface Films and Failure of Nano-Sized Silicon Electrodes in Lithium Ion Batteries
Autor: Hosang Park, Jae Gil Lee, Eun Kyung Kim, Jongjung Kim, Seung M. Oh, Hyun-seung Kim, Jeong Beom Lee, Dong Sub Jung, Ji Heon Ryu
Publikováno v: Journal of The Electrochemical Society. 164:A6103-A6109
This work demonstrates that the mechanical damage of surface passivation films plays an underlying role in the failure of nano-sized Si electrodes in lithium-ion batteries. The surface film derived from the standard electrolyte (1.3 M LiPF6 dissolved
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b31165b7e0d8a764aeb1ba8105a628be
https://doi.org/10.1149/2.0141701jes
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6
Silicon/Carbon Nanotube/BaTiO3 Nanocomposite Anode: Evidence for Enhanced Lithium-Ion Mobility Induced by the Local Piezoelectric Potential
Autor: Jun-Ho Park, Yoon-Sok Kang, Hosang Park, Jin-Hwan Park, Seung-Yeol Jeon, Kihong Kim, Dong Young Kim, Seok-Gwang Doo, Heechul Jung, Woong-Ryeol Yu, Byoung-Sun Lee, Kanghee Lee, Jihyun Yoon, Changhoon Jung
Publikováno v: ACS Nano. 10:2617-2627
We report on the synergetic effects of silicon (Si) and BaTiO3 (BTO) for applications as the anode of Li-ion batteries. The large expansion of Si during lithiation was exploited as an energy source via piezoelectric BTO nanoparticles. Si and BTO nano
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee0791454b3dfd1f7a66d7d5e5db7bcc
https://doi.org/10.1021/acsnano.5b07674
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7
A tetradentate Ni(II) complex cation as a single redox couple for non-aqueous flow batteries
Autor: Ji Heon Ryu, Hosang Park, Taeho Yoon, Seung M. Oh, Junyoung Mun, Hyun-seung Kim, Jihyun Jang
Publikováno v: Journal of Power Sources. 283:300-304
Nickel(II)-1,4,8,11-tetraazacyclotetradecane is examined as a possible single redox couple for non-aqueous flow batteries. The nickel complex cation is reduced at −1.81 V (vs. Fc/Fc+) and oxidized at 0.74 V, showing that this tetradentate Ni(II) co
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1bef1354b517751b704ac4f8bd0436d0
https://doi.org/10.1016/j.jpowsour.2015.02.083
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10
A First-Cycle Coulombic Efficiency Higher than 100 % Observed for a Li2MO3(M=Mo or Ru) Electrode
Autor: Taeho Yoon, Seung M. Oh, Hosang Park, Ji Heon Ryu, Youngjin Kim, Sang-Mo Kim, Hyun-seung Kim, Oh B. Chae, Jihyun Jang
Publikováno v: Angewandte Chemie International Edition. 53:10654-10657
The lithiation/de-lithiation behavior of a ternary oxide (Li2MO3, where M = Mo or Ru) is examined. In the first lithiation, the metal oxide (MO2) component in Li2MO3 is lithiated by a conversion reaction to generate nano-sized metal (M) particles and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8e2b7851be2e09262797351d9f70438
https://doi.org/10.1002/anie.201404510
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