Mesoporous amorphous binary Ru-Ti oxides as bifunctional catalysts for non-aqueous Li-O2 batteries

Jisu Kim; Heegoo Jo; Mihye Wu; Dae Ho Yoon; Yongku Kang; Ha Kyun Jung

doi:10.1088/1361-6528/aa6132

Mesoporous amorphous binary Ru-Ti oxides as bifunctional catalysts for non-aqueous Li-O₂ batteries

Jisu Kim
, Heegoo Jo
, Mihye Wu^*
, Dae Ho Yoon
, Yongku Kang
, Ha Kyun Jung

^*Corresponding author for this work

Division of International Engineering and Science

Korea Research Institute of Chemical Technology
Sungkyunkwan University
Hanyang University
University of Science and Technology UST

Research output: Contribution to journal › Journal article › peer-review

6 Scopus citations

Abstract

Mesoporous amorphous binary Ru-Ti oxides were prepared as bifunctional catalysts for non-aqueous Li-O₂ batteries, and their electrochemical performance was investigated for the first time. A Li-O₂ battery with mesoporous amorphous binary Ru-Ti oxides exhibited a remarkably high capacity of 27100 mAh g^-1 as well as a reduced overpotential. A GITT analysis suggested that the introduction of amorphous TiO₂ to amorphous RuO₂ was responsible for the enhanced kinetics toward both the oxygen reduction reaction and oxygen evolution reaction. Excellent cyclic stability up to 230 cycles was achieved, confirming the applicability of the new bifunctional catalyst in non-aqueous Li-O₂ batteries.

Original language	English
Article number	145401
Journal	Nanotechnology
Volume	28
Issue number	14
DOIs	https://doi.org/10.1088/1361-6528/aa6132
State	Published - 2017.03.8

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

LiO battery
RuO
TiO
amorphous
bifunctional catalyst

Access to Document

10.1088/1361-6528/aa6132

Cite this

@article{8dd3ce9d002f4304a888222776279791,

title = "Mesoporous amorphous binary Ru-Ti oxides as bifunctional catalysts for non-aqueous Li-O2 batteries",

abstract = "Mesoporous amorphous binary Ru-Ti oxides were prepared as bifunctional catalysts for non-aqueous Li-O2 batteries, and their electrochemical performance was investigated for the first time. A Li-O2 battery with mesoporous amorphous binary Ru-Ti oxides exhibited a remarkably high capacity of 27100 mAh g-1 as well as a reduced overpotential. A GITT analysis suggested that the introduction of amorphous TiO2 to amorphous RuO2 was responsible for the enhanced kinetics toward both the oxygen reduction reaction and oxygen evolution reaction. Excellent cyclic stability up to 230 cycles was achieved, confirming the applicability of the new bifunctional catalyst in non-aqueous Li-O2 batteries.",

keywords = "LiO battery, RuO, TiO, amorphous, bifunctional catalyst",

author = "Jisu Kim and Heegoo Jo and Mihye Wu and Yoon, \{Dae Ho\} and Yongku Kang and Jung, \{Ha Kyun\}",

note = "Publisher Copyright: {\textcopyright} 2017 IOP Publishing Ltd.",

year = "2017",

month = mar,

day = "8",

doi = "10.1088/1361-6528/aa6132",

language = "English",

volume = "28",

journal = "Nanotechnology",

issn = "0957-4484",

number = "14",

}

TY - JOUR

T1 - Mesoporous amorphous binary Ru-Ti oxides as bifunctional catalysts for non-aqueous Li-O2 batteries

AU - Kim, Jisu

AU - Jo, Heegoo

AU - Wu, Mihye

AU - Yoon, Dae Ho

AU - Kang, Yongku

AU - Jung, Ha Kyun

PY - 2017/3/8

Y1 - 2017/3/8

N2 - Mesoporous amorphous binary Ru-Ti oxides were prepared as bifunctional catalysts for non-aqueous Li-O2 batteries, and their electrochemical performance was investigated for the first time. A Li-O2 battery with mesoporous amorphous binary Ru-Ti oxides exhibited a remarkably high capacity of 27100 mAh g-1 as well as a reduced overpotential. A GITT analysis suggested that the introduction of amorphous TiO2 to amorphous RuO2 was responsible for the enhanced kinetics toward both the oxygen reduction reaction and oxygen evolution reaction. Excellent cyclic stability up to 230 cycles was achieved, confirming the applicability of the new bifunctional catalyst in non-aqueous Li-O2 batteries.

AB - Mesoporous amorphous binary Ru-Ti oxides were prepared as bifunctional catalysts for non-aqueous Li-O2 batteries, and their electrochemical performance was investigated for the first time. A Li-O2 battery with mesoporous amorphous binary Ru-Ti oxides exhibited a remarkably high capacity of 27100 mAh g-1 as well as a reduced overpotential. A GITT analysis suggested that the introduction of amorphous TiO2 to amorphous RuO2 was responsible for the enhanced kinetics toward both the oxygen reduction reaction and oxygen evolution reaction. Excellent cyclic stability up to 230 cycles was achieved, confirming the applicability of the new bifunctional catalyst in non-aqueous Li-O2 batteries.

KW - LiO battery

KW - RuO

KW - TiO

KW - amorphous

KW - bifunctional catalyst

UR - https://www.scopus.com/pages/publications/85015720568

U2 - 10.1088/1361-6528/aa6132

DO - 10.1088/1361-6528/aa6132

M3 - Journal article

C2 - 28273053

AN - SCOPUS:85015720568

SN - 0957-4484

VL - 28

JO - Nanotechnology

JF - Nanotechnology

IS - 14

M1 - 145401

ER -