Submicron-sized mesoporous anatase TiO2 beads with trapped SnO2 for long-term, high-rate lithium storage

Liu, Shengzhong; Zhu, Kunlei; Tian, Jianhua; Zhang, Wenxuan; Bai, Shuming; Shan, Zhongqiang

doi:10.1016/j.jallcom.2015.03.116

Cited by 15 publications

(4 citation statements)

References 32 publications

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“…The C curve could be attributed to pollution that occurred when the sample was exposed to air. 42 High-resolution XPS spectroscopy during scanning analysed the following aspects: as can be seen from Fig. 2e, the Sn 3d spectrum had two symmetrical peaks in the range of 480-502 eV, corresponding to Sn 3d 5/2 and Sn 3d 3/2 , respectively.…”

Section: Resultsmentioning

confidence: 95%

Self-Supported Amorphous SnO₂/TiO₂ Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Fan

Zhang

Teng

et al. 2019

J. Electrochem. Soc.

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SnO 2 /TiO 2 nanocomposites are fabricated by depositing amorphous SnO 2 and TiO 2 films alternately using pulsed laser deposition (PLD) system. The prepared nanocomposite anode delivers a high reversible capacity of 175 μA h cm −2 at 13.8 μA cm −2 after 200 cycles, and exhibits high rate capability (111 μA h cm −2 at 276 μA cm −2 ). Additionally, a quasi-solid-state battery is also assembled by using the granular film as a self-supporting electrode material, which displays superior cycling stability (136 μA h cm −2 at 13.8 μA cm −2 after 200 cycles). The excellent performance of the SnO 2 /TiO 2 multilayer anodes can be attributed to the multilayer heterogeneous structure and component. In such a granular film structure, the amorphous structure can not only buffer stress, but also promote the diffusion of Li ions. Furthermore, the TiO 2 layers can limit the volume expansion of SnO 2 layer, and the densely packed film structure can avoid aggregation of the nanoparticles and assure structural integrity. Our SnO 2 /TiO 2 nanocomposite, taking advantage of the high specific capacity of SnO 2 and the long cycle life of TiO 2 , has potential applications in high performance LIBs, especially in thin-film microbatteries and flexible lithium batteries.

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Section: Resultsmentioning

confidence: 95%

Self-Supported Amorphous SnO₂/TiO₂ Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Fan

Zhang

Teng

et al. 2019

J. Electrochem. Soc.

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“…This wide peak may be connected to the existence of two contributions at 529.6 eV (Ti-O bonds) and 530.4 eV (Sn-O bonds). 36 Fig. 3f shows the N 1s XPS spectra of N doped TiO 2 /SnO 2 .…”

Section: Morphology and Structurementioning

confidence: 99%

Construction of N-doped TiO₂/SnO₂heterostructured microspheres with dominant {001} facets for enhanced photocatalytic properties

Bai

2016

CrystEngComm

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Nitrogen-doped (N-doped) TiO 2 /SnO 2 heterostructured microspheres with exposed mirror-like plane {001} facets were successfully fabricated by a conventional hydrothermal method and easy impregnation treatment. The morphology, structure and photocatalytic properties of the N-doped TiO 2 /SnO 2 heterostructure were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, and transient photocurrent response. Characterization results indicated that in situ formed SnO 2 nanoparticles were uniformly grafted onto N-TiO 2 microspheres of ca. 2.0 μm in size. The mirror-like {001} surface of these microspheres was covered by square-shaped crystalline facets ca. 0.6 μm long. The formation of a heterojunction between SnO 2 and N-TiO 2 microspheres enhanced the separation efficiency of photogenerated electron-hole pairs and the light-harvesting capability, which significantly improved the photocatalytic performance. Furthermore, N-doped TiO 2 /SnO 2 heterostructured microspheres with highly reactive {001} facets were used as a stable photocatalyst for the highest photocatalytic activity for bisphenol A degradation under UV and visible light irradiation compared with pristine TiO 2 and N-TiO 2 . This result can be attributed to the unique structure and synergistic effect of the dominant mirror-like plane {001} facets, N doping and heterostructured interface. This study provides new possibilities for the development of TiO 2 with a dominant {001} facet-based heterostructure for environmental purification.

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“…The properties of LIBs greatly depend on the electrode materials used [7,8]. Graphite is the most widely used anode material in commercial Li-ion batteries.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, intercalation/deintercalation of titania offers good cycling stability, low volume expansion during charging/ discharging, and increased safety by virtue of the high Li-insertion potential (1.6-1.8 V vs. Li + /Li) [1,3,[12][13][14]. Unfortunately, in comparison with conventional anode materials, TiO 2 has a relatively low theoretical capacity of around 335 mAh g −1 , and intrinsically slow transport kinetics for both electrons and Li ions, which prevents this material from achieving optimal electrochemical performance [1,5,8,13,14]. The electrochemical application of titania depends strongly on its crystal structure, crystallite size, surface area, and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Titanium dioxide/graphene oxide composite and its application as an anode material in non-flammable electrolyte based on ionic liquid and sulfolane

Kurc

Siwińska-Stefańska

Jakóbczyk

et al. 2016

J Solid State Electrochem

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A composite of aminosilane-grafted TiO 2 (TA) and graphene oxide (GO) was prepared via a hydrothermal process. The TiO 2 /graphene oxide-based (TA/GO) anode was investigated in an ionic liquid electrolyte (0.7 M lithium bis(trifluoromethanesulfonyl)imide (LiNTf 2 )) in ionic liquid (N-methyl-N-propylpyrrolidinium bis(trifluoromethanesulfonyl)imide (MPPyrNTf 2 )) at room temperature and in sulfolane (1 M lithium hexafluorophosphate (LiPF 6 ) in tetramethylene sulfolane (TMS)). Scanning and transmission electron microscopy (SEM and TEM) observations of the anode materials suggested that the electrochemical intercalation/deintercalation process in the ionic liquid electrolyte with vinylene carbonate (VC) leads to small changes on the surface of TA/GO particles. The addition of VC to the electrolyte (0.7 M LiNTf 2 in MPPyrNTf 2 + 10 wt.% VC) considerably increases the anode capacity. Electrodes were tested at different current regimes in the range 5-50 mA g . The decrease in anode capacity with increasing current rate was interpreted as the result of kinetic limits of electrode operation. A much lower capacity was observed for the system TA/GO│1 M LiPF 6 in TMS + 10 wt.% VC│Li.

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Submicron-sized mesoporous anatase TiO2 beads with trapped SnO2 for long-term, high-rate lithium storage

Cited by 15 publications

References 32 publications

Self-Supported Amorphous SnO₂/TiO₂ Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Self-Supported Amorphous SnO₂/TiO₂ Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Construction of N-doped TiO₂/SnO₂heterostructured microspheres with dominant {001} facets for enhanced photocatalytic properties

Titanium dioxide/graphene oxide composite and its application as an anode material in non-flammable electrolyte based on ionic liquid and sulfolane

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Submicron-sized mesoporous anatase TiO2 beads with trapped SnO2 for long-term, high-rate lithium storage

Cited by 15 publications

References 32 publications

Self-Supported Amorphous SnO2/TiO2 Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Self-Supported Amorphous SnO2/TiO2 Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Construction of N-doped TiO2/SnO2heterostructured microspheres with dominant {001} facets for enhanced photocatalytic properties

Titanium dioxide/graphene oxide composite and its application as an anode material in non-flammable electrolyte based on ionic liquid and sulfolane

Contact Info

Product

Resources

About

Self-Supported Amorphous SnO₂/TiO₂ Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Self-Supported Amorphous SnO₂/TiO₂ Nanocomposite Films with Improved Electrochemical Performance for Lithium-Ion Batteries

Construction of N-doped TiO₂/SnO₂heterostructured microspheres with dominant {001} facets for enhanced photocatalytic properties