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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Ultra-low overpotential and high rate capability in Li-O-2 batteries through surface atom arrangement of PdCu nanocatalysts Highly Cited Paper

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Title
Ultra-low overpotential and high rate capability in Li-O-2 batteries through surface atom arrangement of PdCu nanocatalysts
Author(s)
Ran Choi; Jung, J; Kim, G; Song, K; Kim, YI; Jung, SC; Han, YK; Hyunjoon Song; Kang, YM
Publication Date
2014-04
Journal
ENERGY & ENVIRONMENTAL SCIENCE, v.7, no.4, pp.1362 - 1368
Publisher
ROYAL SOC CHEMISTRY
Abstract
PdCu bimetallic nanoparticles (NPs) having mixed disordered facecentered cubic (fcc) and ordered body-centered cubic (B2-type) phases enhance the kinetics of oxygen reduction/evolution reaction by significant reduction of overpotentials, which leads to the superb round-trip efficiency of 80%. In addition, the PdCu catalyst demonstrates a remarkable cyclic enhancement in stability and an outstanding rate capability even at a high current density of 5000 mA gcarbon 1. Our first-principles calculations demonstrate that the low overpotentials of the PdCu catalyst are strongly correlated with the weak LiO2 adsorption strength, caused by electron transfer fromCu to the top-layer Pd atoms on the surface.
URI
https://pr.ibs.re.kr/handle/8788114/1068
ISSN
1754-5692
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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