Synthesis of monodispersed SnO2@C composite hollow spheres for lithium ion battery anode applications

Chen, Yunjie; Huang, Qizhao; Wang, J.; Wang, Qian; Xue, Junmin

doi:10.1039/c1jm13572d

Cited by 64 publications

(52 citation statements)

References 36 publications

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“…A slightly higher capacity than theoretical capacity observed in the present study is ascribed to N-doping of the carbon and presence of the defect sites, which usually helps to intercalate more Li + ions into the carbon network [27]. This electrochemical performance is still superior to that reported for carbon-coated SnO 2 materials [12,15,17,23,24] without nitrogen doping. For example, after 50 cycles at 100 mA/g, Chou et al [15] and Chen et al [12] found reversible capacity of 502 mAhg À1 with 90 wt% SnO 2 loading and 495 mA h g À1 with 74 wt% SnO 2 content; whereas, Wang et al [23] achieved 390 mA h g À1 at 200 mA/g after 100 cycles with core-shell SnO 2 /C anodes.…”

Section: Electrochemical Performancescontrasting

confidence: 57%

“…However, these materials suffer from poor cyclic performance, due to large volume changes during insertion/extraction of Li + , involving the alloying/ dealloying reactions (Sn + 4.4Li + + 4.4e À $ Li 4.4 Sn) [7][8][9]. In order to alleviate the volume strain accompanying the pulverization of the Sn-based electrode materials upon cycling, carbon incorporation into the anode architecture has been studied extensively, for instance, encapsulation of nanoparticles in hollow carbon spheres [10][11][12], core-shell structures [13,14], carbon-coated nanoparticles [15][16][17] and nanostructured composites with carbon [18][19][20][21]; however all of these configurations are not without challenges.…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen-doped Carbon-coated SnxOy (x = 1 and y = 0 and 2) Nanoparticles for Rechargeable Li-Ion Batteries

Ara

Chitturi

Salley

et al. 2015

Electrochimica Acta

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Keywords:Lithium-ion battery tin tin oxide nitrogen-doped carbon-coating anode A B S T R A C T Polyacrylonitrile was used as a precursor to coat N-doped carbon (NC) on Sn x O y (x = 1 and y = 0 and 2) nanoparticles. The effect of NC coating on electrochemical performance of Sn x O y anodes was investigated. Fine dispersion of metal nanoparticles coated with carbon was observed from microscopic analysis. Systematic studies were performed to understand the electrochemical behavior as well as Li-ion battery performance of the prepared materials. Noticeable capacity improvements for NC-SnO 2 and NCSn were achieved over carbon-coated particles reported previously in the literature. Among the investigated materials, 50 wt% NC-SnO 2 nanoparticles exhibited the best reversible capacity of 621 mA h g À1 while 60 wt% NC-Sn exhibited the highest capacity of 450 mA h g À1 at 100 mA/g after 50 cycles. Electrochemical studies revealed that the carbon shell can effectively increase the stability of the active materials and improve the cycling performance for lithium-ion batteries. NC-protected Sn nanoparticles were also synthesized using poly(vinylpyrrolidone) as a precursor and this material exhibited a significantly high discharge capacity of 650 mA h g À1 at 100 mA/g after 50 cycles. The studies performed on the Sn-based anodes show the potential of carbon content/coating level and metal particle size for improved Li-ion battery performance.

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Section: Electrochemical Performancescontrasting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Nitrogen-doped Carbon-coated SnxOy (x = 1 and y = 0 and 2) Nanoparticles for Rechargeable Li-Ion Batteries

Ara

Chitturi

Salley

et al. 2015

Electrochimica Acta

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“…Carbon decoration for anode and cathode materials has been proven to improve the electronic conductivity of electrodes [21,22]. Indeed, composite nanomaterials have been used as electrode materials in LIBs due to enhanced electrical conductivity and reduced internal stress, which both improve the total electrical performance of LIBs [18,[23][24][25][26][27][28]. Therefore, it is better to combine the small SnO 2 NPs with other materials to protect the inner SnO 2 NPs.…”

Section: Introductionmentioning

confidence: 98%

Sub-100nm hollow SnO2@C nanoparticles as anode material for lithium ion batteries and significantly enhanced cycle performances

Yang

Zhou

Mei

et al. 2015

Chinese Chemical Letters

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“…Making a flexible LIB requires the development of soft electrode containing electrochemical-active materials, such as metal oxide nanoparticles for cathodes and nanocarbons for anodes, while flexible supercapacitor requires electrodes with high surface area for electro double layer capacitance (EDLC) or high electrochemical activity for pseudocapacitance [16][17][18][19]. There has been a great number of research works on the development of electrode materials designed for LIBs and supercapacitors in regular use conditions, in which conventional electrodes fabricated on metal substrates are applied, and tremendous achievements have been accomplished [13,[20][21][22][23][24][25][26][27]. But the researches on the flexible electrode for the application in the soft or bendable LIB and supercapacitors have just been carried out in the very recent years.…”

Section: Introductionmentioning

confidence: 99%

Chemical Routes to Graphene-Based Flexible Electrodes for Electrochemical Energy Storage

Liu¹,

Xue²

2014

Green Energy and Technology

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Due to their many fascinating properties and low-cost preparation by chemical reduction method, particular attention has been paid to the graphene-based materials in the application of energy storage devices. In the present chapter, we focus on the latest work regarding the development of flexible electrodes for batteries and supercapacitors based on graphene as well as graphene-based composites. To begin with, graphene as the sole or dominant part of flexible electrode will be discussed, involving its structure, relationship between structure and performance, and strategies to improve their performances; The next major section deals with graphene as conductive matrix for flexible electrode, the role of graphene to offer efficient electrically conductive channels and flexible mechanical supports will be discussed. Another role of graphene in flexible electrode is as active additives to improve the performance of cellulose and carbon nanofiber papers, examples will be given and such strategy is promising for further reducing the cost of flexible electrodes. Finally, prospects and further developments in this exciting field of graphene-based flexible energy storage devices will be also suggested.

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Synthesis of monodispersed SnO2@C composite hollow spheres for lithium ion battery anode applications

Cited by 64 publications

References 36 publications

Nitrogen-doped Carbon-coated SnxOy (x = 1 and y = 0 and 2) Nanoparticles for Rechargeable Li-Ion Batteries

Nitrogen-doped Carbon-coated SnxOy (x = 1 and y = 0 and 2) Nanoparticles for Rechargeable Li-Ion Batteries

Sub-100nm hollow SnO2@C nanoparticles as anode material for lithium ion batteries and significantly enhanced cycle performances

Chemical Routes to Graphene-Based Flexible Electrodes for Electrochemical Energy Storage

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