Growth of Ultrafine SnO 2  Nanoparticles within Multiwall Carbon Nanotube Networks: Non-Solution Synthesis and Excellent Electrochemical Properties as Anodes for Lithium Ion Batteries

Li, Yudong; Lu, Xuan; Wang, Hongkang; Xie, Chong; Yang, Guang; Niu, Chunming

doi:10.1016/j.electacta.2015.08.078

Cited by 56 publications

(19 citation statements)

References 42 publications

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“…Electrochemical properties of the SnO 2 /MoO 3-x nanocomposite have been investigated and compared with those of the bare SnO 2 nanoparticles. Figure 3a shows cyclic voltammetry (CV) curves of bare SnO 2 electrodes in the initial several cycles, providing similar profiles such as reported in literature previously for SnO 2 [36][37][38]. In the first cathodic scan, the peak at 0.8 V is attributed to the reduction of SnO 2 into metallic Sn and Li 2 O, accompanied by the formation of solid electrolyte interphase (SEI), which further evolves into peaks at around 1.0 V in the following CV cycles.…”

supporting

confidence: 86%

Hydrothermal Synthesis of SnO2 Embedded MoO3-x Nanocomposites and Their Synergistic Effects on Lithium Storage

Cao

Wang

et al. 2016

Electrochimica Acta

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We demonstrate a facile hydrothermal synthesis of SnO 2 /MoO 3-x nanocomposites with ultrafine SnO 2 crystallites uniformly embedded into an amorphous MoO 3-x matrix, which demonstrate superior electrochemical performance as anodes for lithium ion batteries, including long-term cycling stability (953 mA h/g after 100 cycles at 200 mA/g), high rate capability (668.0 mA h/g after 1000 cycles at 1000 mA/g) and high initial Coulombic efficiency (81.3% at 200 mA/g). Synergistic effects of the both components SnO 2 and MoO 3-x on the lithium storage are revealed by electrochemical characterization and supported by TEM and XPS analysis performed at the different discharge/charge states of the respective electrodes. SnO 2 nanocrystallites confined within the amorphous MoO 3-x matrix efficiently buffer the volume changes of Li-Sn alloying-dealloying upon cycling, while the metallic Mo in situ generated by a conversion reaction of MoO 3-x promotes the reversible reaction SnO 2 + Li + ↔ Sn + Li 2 O. In addition, the amorphous MoO 3-x with bulk or surface defects allows for a better lithium insertion and thus enhanced capacity.

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confidence: 86%

Hydrothermal Synthesis of SnO2 Embedded MoO3-x Nanocomposites and Their Synergistic Effects on Lithium Storage

Cao

Wang

et al. 2016

Electrochimica Acta

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“…With increase of the reaction time, an increase in the T d (by 6,9,13,13,14, and 17 8C, shown in Table III) is also observed. The results of GPC (Table II) indicate the enhanced thermal performance is not due to the increase of molecular weight.…”

Section: Molecular Weight and Pdi Of Pmma Copolymer And Polymer Extrmentioning

confidence: 74%

Study on morphology, molecular weight and thermal properties of composite microspheres prepared by controlling feeding ways and reaction time

Zhao

Jiang

Zhu

et al. 2017

J of Applied Polymer Sci

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The application of composite microspheres closely lies on their morphology and properties. In this work, carbon nanotubes (CNTs) reinforced composite microspheres were prepared via in situ polymerization: methyl methacrylate was selected as matrix to copolymerize with cationic comonomer 2-(methacryloyloxy)ethyltrimethyl ammonium chloride, using CNTs as nanofillers to fabricate composite microspheres. The morphology, molecular weight, and thermal properties of obtained composite microspheres with different monomer feeding ways (batch polymerization and dropwise monomer feeding procedure) and reaction time (1-6 h) were investigated. The results revealed that dropwise monomer feeding procedure leaded to remarkably decreased diameter of composite microspheres. Compared with polymer microspheres, the addition of CNTs resulted in earlier formation of composite microspheres. When the reaction time was controlled for 1-6 h, the morphology of the composite microspheres underwent a shape change from deformed particles to spherical structure. Although reaction time had no significant effect on molecular weight, the thermal property was gradually improved with increase of reaction time. For ensuring the effectiveness of the produced composite microspheres and tailoring them for any specific application, our investigation shows significant reference value on choosing feeding ways and controlling reaction time to obtain different morphology microspheres.

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“…This can be explained by countering effect of carbon crystallization induced at higher temperature. two prominent peaks at 2θ=26.7° and 42.3° appear in MWCNTs (Figure 3a), which can be indexed to the (002) and (100) reflections of graphite [43,44]. After deposition of Si, no new XRD peaks can be observed except for the significantly broadened (002) peak for MWCNTs (Figure 3b).…”

Section: Resultsmentioning

confidence: 99%

Interfacial engineering of Si/multi-walled carbon nanotube nanocomposites towards enhanced lithium storage performance

Jiang

Wang

et al. 2016

Carbon

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Investigation of interfacial reactions between Si and multi-walled carbon nanotubes (MWCNTs) and their effect on lithium storage properties has not yet been reported. Herein, deposition of amorphous Si nanoparticles on MWCNTs is reported by a low pressure chemical vapor deposition. The structural and interfacial evolutions upon high-temperature annealing are systematically investigated, and the results show that Si nanoparticles gradually react with MWCNTs from interfacial regions by forming Si-C bonds with increasing annealling temperature, and Si nanoparticles completely convert into SiC by reacting with the interfacical carbon atoms at 1200 o C. When examined as anode materials for lithium ion batteries, the Si/MWCNTs with partial interfacial SiC demonstrate the best lithium storage properties, owing

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Growth of Ultrafine SnO 2 Nanoparticles within Multiwall Carbon Nanotube Networks: Non-Solution Synthesis and Excellent Electrochemical Properties as Anodes for Lithium Ion Batteries

Cited by 56 publications

References 42 publications

Hydrothermal Synthesis of SnO2 Embedded MoO3-x Nanocomposites and Their Synergistic Effects on Lithium Storage

Hydrothermal Synthesis of SnO2 Embedded MoO3-x Nanocomposites and Their Synergistic Effects on Lithium Storage

Study on morphology, molecular weight and thermal properties of composite microspheres prepared by controlling feeding ways and reaction time

Interfacial engineering of Si/multi-walled carbon nanotube nanocomposites towards enhanced lithium storage performance

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