Unraveling synergistic mixing of SnO2–TiO2 composite as anode for Li-ion battery and their electrochemical properties

The effect of Sn/Ti ratio on the electrochemical properties of the anode is studied in Sn-doped TiO 2 and SnO 2 –TiO 2 nanofibers synthesized using a pilot-scale electrospinning system. Changes in the lattice structure of TiO 2 due to the presence of Sn are studied through X-ray diffraction and high...

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Bibliographic Details
Published inJournal of materials research Vol. 36; no. 20; pp. 4120 - 4130
Main Authors Ling, JinKiong, Karuppiah, Chelladurai, Reddy, M. V., Pal, Bhupender, Yang, Chun-Chen, Jose, Rajan
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 28.10.2021
Springer Nature B.V
Subjects
Applied and Technical Physics
Biomaterials
Chemistry and Materials Science
Cycles
Electrochemical analysis
Electrochemical potential
High resolution electron microscopy
Inorganic Chemistry
Invited Paper
Lithium-ion batteries
Materials Engineering
Materials research
Materials Science
Nanofibers
Nanotechnology
Rechargeable batteries
Stability
Tin
Tin dioxide
Titanium dioxide
Sn
Composite
Chemical synthesis
Ti
Energy storage
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Summary:The effect of Sn/Ti ratio on the electrochemical properties of the anode is studied in Sn-doped TiO 2 and SnO 2 –TiO 2 nanofibers synthesized using a pilot-scale electrospinning system. Changes in the lattice structure of TiO 2 due to the presence of Sn are studied through X-ray diffraction and high-resolution transmission electron microscopy. Lowering of electrochemical potential (vs Li/Li + ) is observed alongside the enhanced capacity (400–600 mAh g −1 ) with increasing Sn content. Formation of SnO 2 grain in sample with high Sn content (70 wt%) shows detrimental effect on cycling stability due to severe volume changes during lithiation/delithiation. We show that the relative fraction of TiO 2 and SnO 2 framework determines whether the composite is high capacity or high stability. In overall, SnO 2 –TiO 2 composite anode with optimized Sn/Ti ratio can be used for high energy density, cycling stability and working potential lithium-ion battery. Graphic abstract The relative fraction of TiO 2 and SnO 2 framework determines whether the composite is high capacity or high stability
ISSN:0884-2914
2044-5326
DOI:10.1557/s43578-021-00313-3