Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 848, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2019.113293
Keywords
Anode material; Rechargeable magnesium batteries; TiO2; Oxyfluoride; Oxygen vacancies; Titanium vacancies
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Funding
- Vietnam National University
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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 TiO(2 )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.
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