Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Yuhong Oh"'
Publikováno v:
Springer Handbook of Electrochemical Energy ISBN: 9783662466568
In this chapter, we provide a comprehensive review of the most recent advances in the field of efficient catalysts for oxygen reduction reaction (ORR ) at fuel-cell cathodes, metal-inorganic nanocomposites. Extensive research has been focused on deve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79676c79b9f07e6745ea883dd384af7c
https://doi.org/10.1007/978-3-662-46657-5_21
https://doi.org/10.1007/978-3-662-46657-5_21
Autor:
Joonhyeon Kang, Sungun Wi, Seunghoon Nam, Yuhong Oh, Chunjoong Kim, Byungwoo Park, Sangheon Lee, Jordi Cabana, Helen Hejin Park, Taehyun Hwang
Publikováno v:
J. Mater. Chem. A. 2:2023-2027
An effective way of synthesizing graphene-wrapped Li4Ti5O12 particles was developed by solid-state reaction between graphene oxide-wrapped P25 (TiO2) and Li2CO3. Compared to the previously reported graphene/Li4Ti5O12 composites, prior wrapping of TiO
Autor:
Joonhyeon Kang, Byungwoo Park, Hongsik Choi, Sungun Wi, Taehyun Hwang, Saeromi Hong, Byung Ho Lee, Yuhong Oh, Seunghoon Nam
Publikováno v:
The Journal of Physical Chemistry Letters. 4:2931-2936
Establishing a relationship between the catalytic activity and electronic structure of a transition-metal surface is important in the prediction and design of a new catalyst in fuel cell technology. Herein, we introduce a novel approach for identifyi
Publikováno v:
Materials Chemistry and Physics. 135:188-192
The enhanced catalytic properties toward ethanol electrooxidation on Pt/AlPO 4 nanocomposite thin-film electrodes were investigated. The Pt/AlPO 4 nanocomposites with various Al/Pt ratios (0.27, 0.57, and 0.96) were fabricated by a co-sputtering meth
Autor:
Byungwoo Park, Sujin Byun, Yuhong Oh, Joonhee Moon, Jungjin Park, Yejun Park, Joonhyeon Kang, Seunghoon Nam, Dae-Ryong Jung
Publikováno v:
Current Applied Physics. 11:S2-S5
Nanostructured Pt/CePO4 thin-film electrodes consisting of the Pt nanocrystallites and amorphous CePO4 were synthesized by sputtering, and the enhanced electrooxidation properties of methanol were investigated. Compared to a bare Pt electrocatalyst,
Publikováno v:
The Journal of Physical Chemistry C. 115:7092-7096
The activities of Au electrodes with an AlPO4 overlayer were examined for oxygen-reduction reactions in alkaline media. Oxygen molecules on gold catalysts are mainly reduced by a two-electron path, forming hydrogen peroxide with half efficiency. On t
Autor:
Seunghoon Nam, Byungwoo Park, Byungjoo Lee, Jongmin Kim, Yejun Park, Chunjoong Kim, Yuhong Oh
Publikováno v:
The Journal of Physical Chemistry C. 114:3688-3692
The activities of Au/AlPO4 nanocomposites with the variation of metal phosphates were examined for oxygen-reduction reactions, both in an alkaline and acidic environment. In an alkaline media, the ...
Publikováno v:
Journal of Solid State Electrochemistry. 14:1235-1240
The electrochemical properties of nanoscale Al2O3-coated LiCoO2 thin films were examined as a function of the coating coverage. Al2O3-coated LiCoO2 films showed enhanced cycle-life performance with increasing degree of coating coverage, which was att
Publikováno v:
Journal of Materials Research. 24:2762-2766
The effects of ruthenium (Ru)-oxidation states were investigated on Ru dissolution from PtRu thin-film electrodes, with the 200 cycles between 0.4 and 1.05 V (versus normal hydrogen electrode). The Ru-oxidation states of the PtRu thin films were syst
Autor:
Sujin Byun, Byungwoo Park, Yuhong Oh, Sungun Wi, Key-one Ahn, Suji Kang, Saeromi Hong, Hongsik Choi, Young Ho Kim, Dong Joo Choi, Seunghoon Nam, Jong Min Kim
Publikováno v:
Journal of Nanoparticle Research. 14
Porous-carbon/LiFePO4 nanocomposites were synthesized by a simple one-step sol–gel process without a pore-forming agent or ball-milling processes. These nanocomposites retained a specific capacity of 96 mAh g−1 even at a rate as high as 5 C (1 C