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<p>TiO<sub>2</sub> has attracted a lot of attention as anode material for sodium-ion batteries due to its higher operating voltage, safely and low lost material, but TiO<sub>2</sub> has two main issues, low electronic conductivity and slow solid-state ion diffusion. These issues have been successfully resolved by researchers using carbon coating on TiO<sub>2</sub>. In this work, carbon coated TiO<sub>2</sub> (CC-TiO<sub>2)</sub> nanoparticles have been synthesized by using TiO<sub>2</sub> and sucrose as soluble source of carbon. The carbon coating on TiO<sub>2</sub> particles was formed after heat treatment in inert atmosphere. CC-TiO<sub>2</sub> particles exhibited reversible capacity of 116 mAh g<sup>− 1</sup> at 0.1&#xa0;C after 50 cycles, and high capacity retention of 77% after 100 cycles in a sodium-ion battery cell. The impressive electrochemical performance of the TiO<sub>2</sub> particles is due to several factors: the small size of the crystallites, the continuous electronic network created by the close contact of individual carbon-coated TiO<sub>2</sub> particles, and the efficient penetration of the mesopores by the electrolyte.</p>

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Carbon coated titanium dioxide (CC-TiO2) as an efficient anode material for sodium- ion batteries

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月11日

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  • Rahul Kumar,
  • Anagha Pradeep,
  • Parag Bhargava

摘要

TiO2 has attracted a lot of attention as anode material for sodium-ion batteries due to its higher operating voltage, safely and low lost material, but TiO2 has two main issues, low electronic conductivity and slow solid-state ion diffusion. These issues have been successfully resolved by researchers using carbon coating on TiO2. In this work, carbon coated TiO2 (CC-TiO2) nanoparticles have been synthesized by using TiO2 and sucrose as soluble source of carbon. The carbon coating on TiO2 particles was formed after heat treatment in inert atmosphere. CC-TiO2 particles exhibited reversible capacity of 116 mAh g− 1 at 0.1 C after 50 cycles, and high capacity retention of 77% after 100 cycles in a sodium-ion battery cell. The impressive electrochemical performance of the TiO2 particles is due to several factors: the small size of the crystallites, the continuous electronic network created by the close contact of individual carbon-coated TiO2 particles, and the efficient penetration of the mesopores by the electrolyte.