Ultra-low overpotential and high rate capability in Li-O2 batteries through surface atom arrangement of PdCu nanocatalysts

Hyunjoon Song; Ran Choi; Jaepyeong Jung; Gyubong Kim; Kyeongse Song; Yong Il Kim; Sung Chul Jung; Young Kyu Han; Yong Mook Kang

doi:10.1039/c3ee43437k

Ultra-low overpotential and high rate capability in Li-O₂ batteries through surface atom arrangement of PdCu nanocatalysts

Hyunjoon Song
, Ran Choi
, Jaepyeong Jung
, Gyubong Kim
, Kyeongse Song
, Yong Il Kim
, Sung Chul Jung
, Young Kyu Han
, Yong Mook Kang

Korea Advanced Institute of Science and Technology
Dongguk University
Korea Basic Science Institute
Korea Research Institute of Standards and Science

Research output: Contribution to journal › Article › peer-review

207 Scopus citations

Abstract

PdCu bimetallic nanoparticles (NPs) having mixed disordered face-centered 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 g_carbon^-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 from Cu to the top-layer Pd atoms on the surface. This journal is

Original language	English
Pages (from-to)	1362-1368
Number of pages	7
Journal	Energy and Environmental Science
Volume	7
Issue number	4
DOIs	https://doi.org/10.1039/c3ee43437k
State	Published - Apr 2014

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10.1039/c3ee43437k

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title = "Ultra-low overpotential and high rate capability in Li-O2 batteries through surface atom arrangement of PdCu nanocatalysts",

abstract = "PdCu bimetallic nanoparticles (NPs) having mixed disordered face-centered 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 from Cu to the top-layer Pd atoms on the surface. This journal is",

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doi = "10.1039/c3ee43437k",

language = "English",

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AU - Song, Hyunjoon

AU - Choi, Ran

AU - Jung, Jaepyeong

AU - Kim, Gyubong

AU - Song, Kyeongse

AU - Kim, Yong Il

AU - Jung, Sung Chul

AU - Han, Young Kyu

AU - Kang, Yong Mook

PY - 2014/4

Y1 - 2014/4

N2 - PdCu bimetallic nanoparticles (NPs) having mixed disordered face-centered 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 from Cu to the top-layer Pd atoms on the surface. This journal is

AB - PdCu bimetallic nanoparticles (NPs) having mixed disordered face-centered 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 from Cu to the top-layer Pd atoms on the surface. This journal is

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JO - Energy and Environmental Science

JF - Energy and Environmental Science

IS - 4

ER -

Ultra-low overpotential and high rate capability in Li-O₂ batteries through surface atom arrangement of PdCu nanocatalysts

Abstract

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