{"title":"Carbon coated titanium dioxide (CC-TiO2) as an efficient anode material for sodium- ion batteries","authors":"Rahul Kumar, Anagha Pradeep, Parag Bhargava","doi":"10.1007/s40243-025-00298-7","DOIUrl":null,"url":null,"abstract":"<div><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 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></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"14 1","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-025-00298-7.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials for Renewable and Sustainable Energy","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1007/s40243-025-00298-7","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
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.
二氧化钛作为钠离子电池的负极材料，因其工作电压高、安全、材料损耗低而备受关注，但二氧化钛主要存在电子导电性低和固态离子扩散慢两个问题。这些问题已经被研究人员在TiO2上使用碳涂层成功地解决了。本研究以二氧化钛和蔗糖为可溶碳源，合成了碳包被TiO2 （CC-TiO2）纳米颗粒。在惰性气氛中热处理后，TiO2颗粒表面形成碳包层。在0.1℃循环50次后，CC-TiO2颗粒的可逆容量为116 mAh g−1，在钠离子电池中循环100次后，其容量保持率高达77%。二氧化钛颗粒令人印象深刻的电化学性能是由于以下几个因素：晶体的小尺寸，单个碳包覆的二氧化钛颗粒紧密接触产生的连续电子网络，以及电解质对介孔的有效渗透。
期刊介绍：
Energy is the single most valuable resource for human activity and the basis for all human progress. Materials play a key role in enabling technologies that can offer promising solutions to achieve renewable and sustainable energy pathways for the future.
Materials for Renewable and Sustainable Energy has been established to be the world''s foremost interdisciplinary forum for publication of research on all aspects of the study of materials for the deployment of renewable and sustainable energy technologies. The journal covers experimental and theoretical aspects of materials and prototype devices for sustainable energy conversion, storage, and saving, together with materials needed for renewable fuel production. It publishes reviews, original research articles, rapid communications, and perspectives. All manuscripts are peer-reviewed for scientific quality.
Topics include:
1. MATERIALS for renewable energy storage and conversion: Batteries, Supercapacitors, Fuel cells, Hydrogen storage, and Photovoltaics and solar cells.
2. MATERIALS for renewable and sustainable fuel production: Hydrogen production and fuel generation from renewables (catalysis), Solar-driven reactions to hydrogen and fuels from renewables (photocatalysis), Biofuels, and Carbon dioxide sequestration and conversion.
3. MATERIALS for energy saving: Thermoelectrics, Novel illumination sources for efficient lighting, and Energy saving in buildings.
4. MATERIALS modeling and theoretical aspects.
5. Advanced characterization techniques of MATERIALS
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