Zobrazeno 1 - 10
of 55
pro vyhledávání: '"JIN BUM PARK"'
Publikováno v:
ACS Energy Letters. 2:2756-2760
Publikováno v:
Journal of Power Sources. 311:49-56
Silver nanowires have been investigated as a catalytic cathode material for lithium-oxygen batteries. Their high aspect ratio contributes to the formation of a corn-shaped layer structure of the poorly crystalline lithium peroxide (Li2O2) nanoparticl
Autor:
Khalil Amine, Xiangyi Luo, Yang-Kook Sun, Kah Chun Lau, Jin Bum Park, Mohammad Asadi, Jun Lu, Zonghai Chen, Bijandra Kumar, Zhigang Zak Fang, Larry A. Curtiss, Yun Jung Lee, Yo Sub Jeong, Hsien-Hau Wang, Scott M. Brombosz, Amin Salehi-Khojin, Jianguo Wen, Dean J. Miller, Dengyun Zhai
Publikováno v:
Nature. 529:377-382
Lithium–oxygen batteries allow oxygen to be reduced at the battery’s cathode when a current is drawn; in present-day batteries, this results in formation of Li2O2, but it is now shown that another high energy density material, namely LiO2, with b
Publikováno v:
Journal of Power Sources. 295:299-304
Mesoporous TiO 2 with well-distributed RuO 2 catalysts is considered in this paper as a carbon-free cathode material replacement. Benefiting from the highly-porous TiO 2 support structure and high catalytic activity of RuO 2 , the Li–O 2 cells with
Autor:
Chong Seung Yoon, Yang-Kook Sun, Jin Bum Park, Jun Ming, Giuseppe Antonio Elia, Bruno Scrosati, Jusef Hassoun, Hee-Soo Kim
Publikováno v:
Solid State Ionics. 278:133-137
Here we report a low polarization, catalyst-free lithium–oxygen battery using mesoporous carbon electrode. BET analysis, SEM and TEM images evidence that the carbon material has surface area as high as 1500 m 2 g -1 and a uniform distribution of na
Autor:
Chang Dae Shin, Jun Lu, Yang-Kook Sun, Khalil Amine, Xiangyi Luo, Chong Seung Yoon, Jin Bum Park
Publikováno v:
The Journal of Physical Chemistry C. 119:15036-15040
Silver (Ag) electrodes are prepared by an electrodeposition method at −0.25 V versus SCE. To evaluate the effect of particle size on Li–air cells, deposition times are 3, 10, 30, and 300 s. When cycled at a current density of 0.032 mA cm–2, the
Autor:
Bruno Scrosati, Yang-Kook Sun, Yo Sub Jeong, Larry A. Curtiss, Jin Bum Park, Xiangyi Luo, Jooho Kim, Yun Jung Lee, Khalil Amine, Jun Lu, Hun-Gi Jung
Publikováno v:
Nano Letters. 15:4261-4268
Among many challenges present in Li-air batteries, one of the main reasons of low efficiency is the high charge overpotential due to the slow oxygen evolution reaction (OER). Here, we present systematic evaluation of Pt, Pd, and Ru nanoparticles supp
Autor:
Hyeon-Ji Shin, Won-Jin Kwak, Michal Afri, Daniel Sharon, Aryeh A. Frimer, Arnd Garsuch, Daniel Hirshberg, Yang-Kook Sun, Frederick Chesneau, Jin Bum Park, Doron Aurbach
Publikováno v:
Journal of Materials Chemistry A. 3:8855-8864
Mankind has been in an unending search for efficient sources of energy. The coupling of lithium and oxygen in aprotic solvents would seem to be a most promising direction for electrochemistry. Indeed, if successful, this system could compete with tec
Publikováno v:
RSC Advances. 5:8793-8800
A type of porous carbon–Fe3O4 (e.g., PC–Fe3O4) composite with an industrially scalable production was introduced in the sodium ion battery application for the first time. The PC–Fe3O4 composite, consisting of highly dispersed Fe3O4 nanocrystals
Autor:
Yang-Kook Sun, Ivgeni Shterenberg, Doron Aurbach, Hyun Deog Yoo, Michael Salama, Jin Bum Park, Yosef Gofer
Publikováno v:
Journal of The Electrochemical Society. 162:A7118-A7128
MgTFSI2 is the only ether-soluble "simple" magnesium salt. The poor electrochemical performance of Mg electrodes in its solutions hinders its practicality as a viable electrolyte for Mg batteries. MgTFSI2/DME solutions were demonstrated to dissolve l