Shape-controlled F-doped TiO2 nanocrystals for Mg-ion batteries

Thanh Son Le; Thu H. Hoa; Duc Q. Truong

doi:10.1016/j.jelechem.2019.113293

Shape-controlled F-doped TiO₂ nanocrystals for Mg-ion batteries

Thanh Son Le, Thu H. Hoa, Duc Q. Truong

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

5 Citations (Scopus)

Abstract

We study the effect of F aliovalent doping into TiO₂ nanocrystals to the electrode performance in magnesium ion battery. The shaped/morphological tuning of F-doped anatase TiO₂ nanocrystals with exposed {001} and {101} facets was done to optimize the structural features to improve electrochemical properties in Mg-ion battery. The experiment results show the preferable intercalation of Mg²⁺ ion into F-doped anatase TiO₂ compared to pure TiO₂. The Mg-ion storage properties were improved with higher percentage of {001} exposed facets. The best TiO₂ material electrodes deliver a high reversible specific capacity of 77.2 mAh g⁻¹ at current rate of 20 mA g⁻¹ and remains 63.7 mAh g⁻¹ after 50 cycles. This work highlights the importance of defect engineering and surface control to boost electrochemical performance in Mg-ion batteries.

Original language	English
Article number	113293
Journal	Journal of Electroanalytical Chemistry
Volume	848
DOIs	https://doi.org/10.1016/j.jelechem.2019.113293
Publication status	Published - 2019 Sep 1
Externally published	Yes

Keywords

Anode material
Oxyfluoride
Oxygen vacancies
Rechargeable magnesium batteries
TiO
Titanium vacancies

ASJC Scopus subject areas

Analytical Chemistry
Chemical Engineering(all)
Electrochemistry

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title = "Shape-controlled F-doped TiO2 nanocrystals for Mg-ion batteries",

abstract = "We study the effect of F aliovalent doping into TiO2 nanocrystals to the electrode performance in magnesium ion battery. The shaped/morphological tuning of F-doped anatase TiO2 nanocrystals with exposed {001} and {101} facets was done to optimize the structural features to improve electrochemical properties in Mg-ion battery. The experiment results show the preferable intercalation of Mg2+ ion into F-doped anatase TiO2 compared to pure TiO2. The Mg-ion storage properties were improved with higher percentage of {001} exposed facets. The best TiO2 material electrodes deliver a high reversible specific capacity of 77.2 mAh g−1 at current rate of 20 mA g−1 and remains 63.7 mAh g−1 after 50 cycles. This work highlights the importance of defect engineering and surface control to boost electrochemical performance in Mg-ion batteries.",

keywords = "Anode material, Oxyfluoride, Oxygen vacancies, Rechargeable magnesium batteries, TiO, Titanium vacancies",

author = "Le, {Thanh Son} and Hoa, {Thu H.} and Truong, {Duc Q.}",

year = "2019",

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doi = "10.1016/j.jelechem.2019.113293",

language = "English",

volume = "848",

journal = "Journal of Electroanalytical Chemistry",

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T1 - Shape-controlled F-doped TiO2 nanocrystals for Mg-ion batteries

AU - Le, Thanh Son

AU - Hoa, Thu H.

AU - Truong, Duc Q.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - We study the effect of F aliovalent doping into TiO2 nanocrystals to the electrode performance in magnesium ion battery. The shaped/morphological tuning of F-doped anatase TiO2 nanocrystals with exposed {001} and {101} facets was done to optimize the structural features to improve electrochemical properties in Mg-ion battery. The experiment results show the preferable intercalation of Mg2+ ion into F-doped anatase TiO2 compared to pure TiO2. The Mg-ion storage properties were improved with higher percentage of {001} exposed facets. The best TiO2 material electrodes deliver a high reversible specific capacity of 77.2 mAh g−1 at current rate of 20 mA g−1 and remains 63.7 mAh g−1 after 50 cycles. This work highlights the importance of defect engineering and surface control to boost electrochemical performance in Mg-ion batteries.

AB - We study the effect of F aliovalent doping into TiO2 nanocrystals to the electrode performance in magnesium ion battery. The shaped/morphological tuning of F-doped anatase TiO2 nanocrystals with exposed {001} and {101} facets was done to optimize the structural features to improve electrochemical properties in Mg-ion battery. The experiment results show the preferable intercalation of Mg2+ ion into F-doped anatase TiO2 compared to pure TiO2. The Mg-ion storage properties were improved with higher percentage of {001} exposed facets. The best TiO2 material electrodes deliver a high reversible specific capacity of 77.2 mAh g−1 at current rate of 20 mA g−1 and remains 63.7 mAh g−1 after 50 cycles. This work highlights the importance of defect engineering and surface control to boost electrochemical performance in Mg-ion batteries.

KW - Anode material

KW - Oxyfluoride

KW - Oxygen vacancies

KW - Rechargeable magnesium batteries

KW - TiO

KW - Titanium vacancies

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