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Anatase TiO2 ultrathin nanobelts derived from room-temperature-synthesized titanates for fast and safe lithium storage.

Wen W, Wu JM, Jiang YZ, Yu SL, Bai JQ, Cao MH, Cui J - Sci Rep (2015)

Bottom Line: Herein, we exploit a novel and scalable route to synthesize ultrathin nanobelts of anatase TiO2, which is resource abundant and is eligible for safe anodes in LIBs.Unlike conventional alkali-hydrothermal approaches to hydrogen titanates, the present room temperature alkaline-free wet chemistry strategy guarantees the ultrathin thickness for the resultant titanate nanobelts.The synthesis route is convenient for metal decoration and also for fabricating thin films of one/three dimensional arrays on various substrates at low temperatures, in absence of any seed layers.

View Article: PubMed Central - PubMed

Affiliation: 1] State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China [2] College of Mechanical and Electrical Engineering, Hainan University, Haikou 570228, P. R. China.

ABSTRACT
Lithium-ion batteries (LIBs) are promising energy storage devices for portable electronics, electric vehicles, and power-grid applications. It is highly desirable yet challenging to develop a simple and scalable method for constructions of sustainable materials for fast and safe LIBs. Herein, we exploit a novel and scalable route to synthesize ultrathin nanobelts of anatase TiO2, which is resource abundant and is eligible for safe anodes in LIBs. The achieved ultrathin nanobelts demonstrate outstanding performances for lithium storage because of the unique nanoarchitecture and appropriate composition. Unlike conventional alkali-hydrothermal approaches to hydrogen titanates, the present room temperature alkaline-free wet chemistry strategy guarantees the ultrathin thickness for the resultant titanate nanobelts. The anatase TiO2 ultrathin nanobelts were achieved simply by a subsequent calcination in air. The synthesis route is convenient for metal decoration and also for fabricating thin films of one/three dimensional arrays on various substrates at low temperatures, in absence of any seed layers.

No MeSH data available.


Related in: MedlinePlus

Characterization of titanate array films.(a) Top view and (b) cross sectional SEM images of titanate arrays precipitated on glass substrates. (c,d) SEM images of the core-shell branched nanowire arrays. (e,f) SEM images of the core-shell branched nanobelt arrays.
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f5: Characterization of titanate array films.(a) Top view and (b) cross sectional SEM images of titanate arrays precipitated on glass substrates. (c,d) SEM images of the core-shell branched nanowire arrays. (e,f) SEM images of the core-shell branched nanobelt arrays.

Mentions: Interestingly, the synthesis strategy described here is capable of constructing titanate nanobelt arrays (Fig. 5a,b) and branched core-shell arrays (Fig. 5c–f, namely ultrathin nanobelts deposited on anatase TiO2 nanowire or nanobelt arrays) on various plane and complex substrates without the assistance of any seed layers. TiO2 arrays with various 1D/3D nanostructures have potential applications in regions of solar energy conversion, energy storage, and wettability control646566. It is noted that the growth of nanostructured hydrogen titanate arrays via alkaline hydrothermal route is always limited to metallic Ti substrates32, or other substrates with a Ti coating35. Moreover, composition decoration can be conveniently achieved by this method (Supplementary Figs. 9–14), which may exhibit enhanced properties in lithium storage67 and photoelectrochemical water splitting6869.


Anatase TiO2 ultrathin nanobelts derived from room-temperature-synthesized titanates for fast and safe lithium storage.

Wen W, Wu JM, Jiang YZ, Yu SL, Bai JQ, Cao MH, Cui J - Sci Rep (2015)

Characterization of titanate array films.(a) Top view and (b) cross sectional SEM images of titanate arrays precipitated on glass substrates. (c,d) SEM images of the core-shell branched nanowire arrays. (e,f) SEM images of the core-shell branched nanobelt arrays.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4488874&req=5

f5: Characterization of titanate array films.(a) Top view and (b) cross sectional SEM images of titanate arrays precipitated on glass substrates. (c,d) SEM images of the core-shell branched nanowire arrays. (e,f) SEM images of the core-shell branched nanobelt arrays.
Mentions: Interestingly, the synthesis strategy described here is capable of constructing titanate nanobelt arrays (Fig. 5a,b) and branched core-shell arrays (Fig. 5c–f, namely ultrathin nanobelts deposited on anatase TiO2 nanowire or nanobelt arrays) on various plane and complex substrates without the assistance of any seed layers. TiO2 arrays with various 1D/3D nanostructures have potential applications in regions of solar energy conversion, energy storage, and wettability control646566. It is noted that the growth of nanostructured hydrogen titanate arrays via alkaline hydrothermal route is always limited to metallic Ti substrates32, or other substrates with a Ti coating35. Moreover, composition decoration can be conveniently achieved by this method (Supplementary Figs. 9–14), which may exhibit enhanced properties in lithium storage67 and photoelectrochemical water splitting6869.

Bottom Line: Herein, we exploit a novel and scalable route to synthesize ultrathin nanobelts of anatase TiO2, which is resource abundant and is eligible for safe anodes in LIBs.Unlike conventional alkali-hydrothermal approaches to hydrogen titanates, the present room temperature alkaline-free wet chemistry strategy guarantees the ultrathin thickness for the resultant titanate nanobelts.The synthesis route is convenient for metal decoration and also for fabricating thin films of one/three dimensional arrays on various substrates at low temperatures, in absence of any seed layers.

View Article: PubMed Central - PubMed

Affiliation: 1] State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China [2] College of Mechanical and Electrical Engineering, Hainan University, Haikou 570228, P. R. China.

ABSTRACT
Lithium-ion batteries (LIBs) are promising energy storage devices for portable electronics, electric vehicles, and power-grid applications. It is highly desirable yet challenging to develop a simple and scalable method for constructions of sustainable materials for fast and safe LIBs. Herein, we exploit a novel and scalable route to synthesize ultrathin nanobelts of anatase TiO2, which is resource abundant and is eligible for safe anodes in LIBs. The achieved ultrathin nanobelts demonstrate outstanding performances for lithium storage because of the unique nanoarchitecture and appropriate composition. Unlike conventional alkali-hydrothermal approaches to hydrogen titanates, the present room temperature alkaline-free wet chemistry strategy guarantees the ultrathin thickness for the resultant titanate nanobelts. The anatase TiO2 ultrathin nanobelts were achieved simply by a subsequent calcination in air. The synthesis route is convenient for metal decoration and also for fabricating thin films of one/three dimensional arrays on various substrates at low temperatures, in absence of any seed layers.

No MeSH data available.


Related in: MedlinePlus