Citation: Wu Minghong, Gao Yanping, Hu Yu, Zhao Bing, Zhang Haijiao. Boosting sodium storage of mesoporous TiO₂ nanostructure regulated by carbon quantum dots[J]. Chinese Chemical Letters, ;2020, 31(3): 897-902. doi: 10.1016/j.cclet.2019.07.039 shu

Boosting sodium storage of mesoporous TiO₂ nanostructure regulated by carbon quantum dots

Wu Minghong ^b ,
Gao Yanping ^a ,
Hu Yu ^a ,
Zhao Bing ^b ,
Zhang Haijiao ^a,*,

a.
Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China
b.
School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China

hjzhang128@shu.edu.cn

Received Date: 20 May 2019
Revised Date: 9 July 2019
Accepted Date: 16 July 2019
Available Online: 17 July 2019

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It has been demonstrated that the conductivity and electrochemical properties of TiO₂ nanomaterials can be significantly improved by an incorporation of carbon additives. In the study, we develop a novel Ndoped TiO₂ mesoporous nanostructure via the addition of carbon quantum dots (CQDs) solution following a scalable hydrothermal process. The as-made TiO₂ product shows well-defined morphology, high conductivity, large surface area, and abundant mesopores. When evaluated as anodes for sodiumion batteries, the CQDs@TiO₂ product annealed at 500℃ exhibits a superior sodium storage capability. It delivers a high reversible capacity of 168.8 mAh/g at 100 mA/g over 500 cycles and long cycling stability. The remarkable performance of CQDs@TiO₂ mainly arises from the large surface area and mesoporous architecture constructed by ultrathin TiO₂ nanosheets, as well as the full cooperation between CQDs and TiO₂.
- TiO₂,
- Mesoporous nanostructure,
- Carbon quantum dots,
- Anode materials,
- Sodium-ion batteries
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Boosting sodium storage of mesoporous TiO2 nanostructure regulated by carbon quantum dots

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通讯作者: 陈斌, bchen63@163.com

Boosting sodium storage of mesoporous TiO₂ nanostructure regulated by carbon quantum dots