TiO2/MoO2 nanocomposite as anode materials for high power Li-ion batteries with exceptional capacity

Dustin Bauer; Alexander J. Roberts; Chris L. Starkey; Raman Vedarajan; Dan J.L. Brett; Paul R. Shearing; Noriyoshi Matsumi; Jawwad A. Darr

doi:10.20964/2018.05.37

TiO2/MoO2 nanocomposite as anode materials for high power Li-ion batteries with exceptional capacity

Dustin Bauer, Alexander J. Roberts, Chris L. Starkey, Raman Vedarajan, Dan J.L. Brett, Paul R. Shearing, Noriyoshi Matsumi, Jawwad A. Darr

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Abstract

Nanoparticles of molybdenum(IV) oxide (MoO2) and a TiO2/MoO(2)nanocomposite were synthesised via a continuous hydrothermal synthesisprocess. Both powders were analysed using XRD, XPS, TEM, and BET andevaluated as active materials in anodes for Li-ion half-cells. Cyclicvoltammetry and galvanostatic charge/discharge measurements were carriedout in the potential window of 0.1 to 3.0 V vs. Li/Li+. Specificcapacities of ca. 350 mAh g(-1) were obtained for both materials at lowspecific currents (0.1 A g(-1)); TiO2/MoO(2 )composite electrodes showedsuperior rate behaviour & stability under cycling (compared to MoO2),with stable specific capacities of ca. 265 mAh g(-1) at a specificcurrent of 0.5 A g(-1) and ca. 150 mAh g(-1) after 350 cycles at aspecific current of 2.5 A g(-1). The improved performance of thecomposite material, compared to MoO2, was attributed to a smallerparticle size, improved stability to volume changes (during cycling),and lower charge transfer resistance during cycling. Li-ion hybridelectrochemical capacitors using TiO2/MoO2 composite anodes andactivated carbon (AC) cathodes were evaluated and showed excellentperformance with an energy density of 44 Wh kg(-1) at a power density of600 W kg(-1).

Original language	English
Pages (from-to)	5120-5140
Number of pages	21
Journal	International Journal of Electrochemical Science
Volume	13
DOIs	https://doi.org/10.20964/2018.05.37
Publication status	Published - 10 Apr 2018

Bibliographical note

© 2018 The Authors. Published by ESG (www.electrochemsci.org). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

Keywords

Composite anode materials
Continuous hydrothermal flow synthesis
Molybdenum oxide
Pseudocapacitance
Supercabattery

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PublishedAccepted author manuscript, 2.47 MBLicence: CC BY

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@article{19d0c4f5170c45c0a476891926f08c9a,

title = "TiO2/MoO2 nanocomposite as anode materials for high power Li-ion batteries with exceptional capacity",

abstract = "Nanoparticles of molybdenum(IV) oxide (MoO2) and a TiO2/MoO(2)nanocomposite were synthesised via a continuous hydrothermal synthesisprocess. Both powders were analysed using XRD, XPS, TEM, and BET andevaluated as active materials in anodes for Li-ion half-cells. Cyclicvoltammetry and galvanostatic charge/discharge measurements were carriedout in the potential window of 0.1 to 3.0 V vs. Li/Li+. Specificcapacities of ca. 350 mAh g(-1) were obtained for both materials at lowspecific currents (0.1 A g(-1)); TiO2/MoO(2 )composite electrodes showedsuperior rate behaviour & stability under cycling (compared to MoO2),with stable specific capacities of ca. 265 mAh g(-1) at a specificcurrent of 0.5 A g(-1) and ca. 150 mAh g(-1) after 350 cycles at aspecific current of 2.5 A g(-1). The improved performance of thecomposite material, compared to MoO2, was attributed to a smallerparticle size, improved stability to volume changes (during cycling),and lower charge transfer resistance during cycling. Li-ion hybridelectrochemical capacitors using TiO2/MoO2 composite anodes andactivated carbon (AC) cathodes were evaluated and showed excellentperformance with an energy density of 44 Wh kg(-1) at a power density of600 W kg(-1).",

keywords = "Composite anode materials, Continuous hydrothermal flow synthesis, Molybdenum oxide, Pseudocapacitance, Supercabattery",

author = "Dustin Bauer and Roberts, {Alexander J.} and Starkey, {Chris L.} and Raman Vedarajan and Brett, {Dan J.L.} and Shearing, {Paul R.} and Noriyoshi Matsumi and Darr, {Jawwad A.}",

note = "{\textcopyright} 2018 The Authors. Published by ESG (www.electrochemsci.org). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/). ",

year = "2018",

month = apr,

day = "10",

doi = "10.20964/2018.05.37",

language = "English",

volume = "13",

pages = "5120--5140",

journal = "International Journal of Electrochemical Science",

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TY - JOUR

T1 - TiO2/MoO2 nanocomposite as anode materials for high power Li-ion batteries with exceptional capacity

AU - Bauer, Dustin

AU - Roberts, Alexander J.

AU - Starkey, Chris L.

AU - Vedarajan, Raman

AU - Brett, Dan J.L.

AU - Shearing, Paul R.

AU - Matsumi, Noriyoshi

AU - Darr, Jawwad A.

N1 - © 2018 The Authors. Published by ESG (www.electrochemsci.org). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

PY - 2018/4/10

Y1 - 2018/4/10

N2 - Nanoparticles of molybdenum(IV) oxide (MoO2) and a TiO2/MoO(2)nanocomposite were synthesised via a continuous hydrothermal synthesisprocess. Both powders were analysed using XRD, XPS, TEM, and BET andevaluated as active materials in anodes for Li-ion half-cells. Cyclicvoltammetry and galvanostatic charge/discharge measurements were carriedout in the potential window of 0.1 to 3.0 V vs. Li/Li+. Specificcapacities of ca. 350 mAh g(-1) were obtained for both materials at lowspecific currents (0.1 A g(-1)); TiO2/MoO(2 )composite electrodes showedsuperior rate behaviour & stability under cycling (compared to MoO2),with stable specific capacities of ca. 265 mAh g(-1) at a specificcurrent of 0.5 A g(-1) and ca. 150 mAh g(-1) after 350 cycles at aspecific current of 2.5 A g(-1). The improved performance of thecomposite material, compared to MoO2, was attributed to a smallerparticle size, improved stability to volume changes (during cycling),and lower charge transfer resistance during cycling. Li-ion hybridelectrochemical capacitors using TiO2/MoO2 composite anodes andactivated carbon (AC) cathodes were evaluated and showed excellentperformance with an energy density of 44 Wh kg(-1) at a power density of600 W kg(-1).

AB - Nanoparticles of molybdenum(IV) oxide (MoO2) and a TiO2/MoO(2)nanocomposite were synthesised via a continuous hydrothermal synthesisprocess. Both powders were analysed using XRD, XPS, TEM, and BET andevaluated as active materials in anodes for Li-ion half-cells. Cyclicvoltammetry and galvanostatic charge/discharge measurements were carriedout in the potential window of 0.1 to 3.0 V vs. Li/Li+. Specificcapacities of ca. 350 mAh g(-1) were obtained for both materials at lowspecific currents (0.1 A g(-1)); TiO2/MoO(2 )composite electrodes showedsuperior rate behaviour & stability under cycling (compared to MoO2),with stable specific capacities of ca. 265 mAh g(-1) at a specificcurrent of 0.5 A g(-1) and ca. 150 mAh g(-1) after 350 cycles at aspecific current of 2.5 A g(-1). The improved performance of thecomposite material, compared to MoO2, was attributed to a smallerparticle size, improved stability to volume changes (during cycling),and lower charge transfer resistance during cycling. Li-ion hybridelectrochemical capacitors using TiO2/MoO2 composite anodes andactivated carbon (AC) cathodes were evaluated and showed excellentperformance with an energy density of 44 Wh kg(-1) at a power density of600 W kg(-1).

KW - Composite anode materials

KW - Continuous hydrothermal flow synthesis

KW - Molybdenum oxide

KW - Pseudocapacitance

KW - Supercabattery

UR - http://www.mendeley.com/research/tio2moo2-nanocomposite-anode-materials-high-power-liion-batteries-exceptional-capacity

U2 - 10.20964/2018.05.37

DO - 10.20964/2018.05.37

M3 - Article

SN - 1452-3981

VL - 13

SP - 5120

EP - 5140

JO - International Journal of Electrochemical Science

JF - International Journal of Electrochemical Science

ER -

TiO2/MoO2 nanocomposite as anode materials for high power Li-ion batteries with exceptional capacity

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