Ultra-high initial coulombic efficiency of the TiO<sub>2</sub> anode induced by the synergistic role of the electrolyte and binder for sodium-ion batteries

Yang, Li; Yang, Yingchang; Shi, Wenxin; Leng, Senlin; Cheng, Deliang; Hou, Hongshuai

doi:10.1039/d3ta02221h

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta02221h

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Ultra-high initial coulombic efficiency of the TiO₂ anode induced by the synergistic role of the electrolyte and binder for sodium-ion batteries

Li Yang

Yingchang Yang

Wenxin Shi

et al.

Abstract: TiO2 anode for sodium-ion batteries (SIBs) is currently drawing the increased attention owing to its stable cycling performance. However, the storage performance is still extremely inadequate, especially for its low...

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Manipulating Electrolyte Interface Chemistry Enables High-Performance TiO2 Anode for Sodium-Ion Batteries

Wang,

Zhang,

Sun

et al. 2024

Batteries

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Titanium dioxide (TiO2) has emerged as a candidate anode material for sodium-ion batteries (SIBs). However, their applications still face challenges of poor rate performance and low initial coulomb efficiency (ICE), which are induced by the unstable solid-electrolyte interface (SEI) and sluggish Na+ diffusion kinetics in conventional ester-based electrolytes. Herein, inspired by the electrode/electrolyte interfacial chemistry, tetrahydrofuran (THF) is exploited to construct an advanced electrolyte and reveal the relationship between the improved electrochemical performance and the derived SEI film on TiO2 anode. The robust and homogeneously distributed F-rich SEI film formed in THF electrolyte favors fast interfacial charge transfer dynamics and excellent interfacial stability. As a result, the THF electrolyte endows the TiO2 anode with greatly improved ICE (64.5%), exceptional rate capabilities (186 mAh g−1 at 5.0 A g−1), and remarkable cycling stability. This study elucidates the control of interfacial chemistry by rational electrolyte design and offers insights into the development of high-performance and long-lifetime TiO2 anode.

show abstract

Manipulating Electrolyte Interface Chemistry Enables High-Performance TiO2 Anode for Sodium-Ion Batteries

Wang,

Zhang,

Sun

et al. 2024

Batteries

View full text Add to dashboard Cite

show abstract

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Ultra-high initial coulombic efficiency of the TiO₂ anode induced by the synergistic role of the electrolyte and binder for sodium-ion batteries

Abstract: TiO2 anode for sodium-ion batteries (SIBs) is currently drawing the increased attention owing to its stable cycling performance. However, the storage performance is still extremely inadequate, especially for its low...

Cited by 1 publication

References 63 publications

Manipulating Electrolyte Interface Chemistry Enables High-Performance TiO2 Anode for Sodium-Ion Batteries

Manipulating Electrolyte Interface Chemistry Enables High-Performance TiO2 Anode for Sodium-Ion Batteries

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Ultra-high initial coulombic efficiency of the TiO2 anode induced by the synergistic role of the electrolyte and binder for sodium-ion batteries

Abstract: TiO2 anode for sodium-ion batteries (SIBs) is currently drawing the increased attention owing to its stable cycling performance. However, the storage performance is still extremely inadequate, especially for its low...

Cited by 1 publication

References 63 publications

Manipulating Electrolyte Interface Chemistry Enables High-Performance TiO2 Anode for Sodium-Ion Batteries

Manipulating Electrolyte Interface Chemistry Enables High-Performance TiO2 Anode for Sodium-Ion Batteries

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Product

Resources

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Ultra-high initial coulombic efficiency of the TiO₂ anode induced by the synergistic role of the electrolyte and binder for sodium-ion batteries