Achieving outstanding Li+-ORR and -OER activities via edge- and corner-embedded bimetallic nanocubes for rechargeable Li-O2 batteries

Jaepyeong Jung; Kyeongse Song; Youngjoon Bae; Sang Il Choi; Mihui Park; Eunbi Cho; Kisuk Kang; Yong Mook Kang

doi:10.1016/j.nanoen.2015.09.011

Achieving outstanding Li⁺-ORR and -OER activities via edge- and corner-embedded bimetallic nanocubes for rechargeable Li-O₂ batteries

Jaepyeong Jung, Kyeongse Song, Youngjoon Bae, Sang Il Choi, Mihui Park, Eunbi Cho, Kisuk Kang, Yong Mook Kang

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

27 Scopus citations

Abstract

The shape of catalysts has been regarded as a crucial physical factor to determine its catalytic activity in various applications. However, very little is known about the catalyst shape-dependent activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the cathode of Li-O₂ battery. Hence, we synthesized Pt₃Co nanocube (NC) for the comparison with Pt₃Co nanoparticle (NP) by regulating the ratio of reducer (hexadecanediol; HDD) amount. Consequently, we could report on very high capacity (10,000mAh g_carbon^-1), superb rate capability (3500mAh g_carbon^-1 at 2000mA g_carbon^-1) and high reversibility of Lithium-O₂ batteries using Pt₃Co NC catalysts. Particularly, the Pt₃Co NCs catalyst exhibited a low OER potential of 3.1V, providing the highest round trip efficiency of ~86.5% at a current density of 200mA g_carbon^-1, which is much superior to NPs catalyst.

Original language	English
Pages (from-to)	71-80
Number of pages	10
Journal	Nano Energy
Volume	18
DOIs	https://doi.org/10.1016/j.nanoen.2015.09.011
State	Published - 1 Nov 2015

Keywords

Bimetallic nanocubes
Electrocatalysts
Li-O batteries
Oxygen evolution reactions
Oxygen reduction reactions

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nanoen.2015.09.011

Cite this

@article{be4771c009d94a009a55354784b6c86e,

title = "Achieving outstanding Li+-ORR and -OER activities via edge- and corner-embedded bimetallic nanocubes for rechargeable Li-O2 batteries",

abstract = "The shape of catalysts has been regarded as a crucial physical factor to determine its catalytic activity in various applications. However, very little is known about the catalyst shape-dependent activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the cathode of Li-O2 battery. Hence, we synthesized Pt3Co nanocube (NC) for the comparison with Pt3Co nanoparticle (NP) by regulating the ratio of reducer (hexadecanediol; HDD) amount. Consequently, we could report on very high capacity (10,000mAh gcarbon-1), superb rate capability (3500mAh gcarbon-1 at 2000mA gcarbon-1) and high reversibility of Lithium-O2 batteries using Pt3Co NC catalysts. Particularly, the Pt3Co NCs catalyst exhibited a low OER potential of 3.1V, providing the highest round trip efficiency of ~86.5% at a current density of 200mA gcarbon-1, which is much superior to NPs catalyst.",

keywords = "Bimetallic nanocubes, Electrocatalysts, Li-O batteries, Oxygen evolution reactions, Oxygen reduction reactions",

author = "Jaepyeong Jung and Kyeongse Song and Youngjoon Bae and Choi, {Sang Il} and Mihui Park and Eunbi Cho and Kisuk Kang and Kang, {Yong Mook}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

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doi = "10.1016/j.nanoen.2015.09.011",

language = "English",

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T1 - Achieving outstanding Li+-ORR and -OER activities via edge- and corner-embedded bimetallic nanocubes for rechargeable Li-O2 batteries

AU - Jung, Jaepyeong

AU - Song, Kyeongse

AU - Bae, Youngjoon

AU - Choi, Sang Il

AU - Park, Mihui

AU - Cho, Eunbi

AU - Kang, Kisuk

AU - Kang, Yong Mook

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The shape of catalysts has been regarded as a crucial physical factor to determine its catalytic activity in various applications. However, very little is known about the catalyst shape-dependent activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the cathode of Li-O2 battery. Hence, we synthesized Pt3Co nanocube (NC) for the comparison with Pt3Co nanoparticle (NP) by regulating the ratio of reducer (hexadecanediol; HDD) amount. Consequently, we could report on very high capacity (10,000mAh gcarbon-1), superb rate capability (3500mAh gcarbon-1 at 2000mA gcarbon-1) and high reversibility of Lithium-O2 batteries using Pt3Co NC catalysts. Particularly, the Pt3Co NCs catalyst exhibited a low OER potential of 3.1V, providing the highest round trip efficiency of ~86.5% at a current density of 200mA gcarbon-1, which is much superior to NPs catalyst.

AB - The shape of catalysts has been regarded as a crucial physical factor to determine its catalytic activity in various applications. However, very little is known about the catalyst shape-dependent activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the cathode of Li-O2 battery. Hence, we synthesized Pt3Co nanocube (NC) for the comparison with Pt3Co nanoparticle (NP) by regulating the ratio of reducer (hexadecanediol; HDD) amount. Consequently, we could report on very high capacity (10,000mAh gcarbon-1), superb rate capability (3500mAh gcarbon-1 at 2000mA gcarbon-1) and high reversibility of Lithium-O2 batteries using Pt3Co NC catalysts. Particularly, the Pt3Co NCs catalyst exhibited a low OER potential of 3.1V, providing the highest round trip efficiency of ~86.5% at a current density of 200mA gcarbon-1, which is much superior to NPs catalyst.

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