Tin Oxide/Graphene Aerogel Nanocomposites Building Superior Rate Capability for Lithium Ion Batteries

Fan, Linlin; Li, Xifei; Cui, Yanhua; Xu, Hui; Zhang, Xianfa; Xiong, Dongbin; Yan, Bo; Wang, Yufen; Li, Dejun

doi:10.1016/j.electacta.2015.07.080

Cited by 43 publications

(15 citation statements)

References 51 publications

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“…Meanwhile, the linear relationship between I p and v 1/2 indicates that the reaction kinetics is controlled by the Na + diffusion process. [15c], The Na + coefficient is evaluated by the Randles–Sevcik equation

I_{normalp} = 2.69 \times 10^{5} n^{3 / 2} A D^{1 / 2} v^{1 / 2} C_{0}

where I p is the peak current, n is the charge–transfer number, A is the geometric area of electrode, C 0 is the concentration of Na + in the solution, v is the potential scan rate, and D is the diffusion coefficient of Na + . According to Equation , the Na + diffusion coefficients of a‐SnO 2 /GA and c‐SnO 2 /GA are estimated as 1.958 × 10 −16 and 9.747 × 10 −17 cm 2 s −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Controlled SnO₂ Crystallinity Effectively Dominating Sodium Storage Performance

Fan

Yan

et al. 2016

Advanced Energy Materials

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The exploration of sodium ion batteries (SIBs) is a profound challenge due to the rich sodium abundance and limited supply of lithium on earth. Here, amorphous SnO2/graphene aerogel (a‐SnO2/GA) nanocomposites have been successfully synthesized via a hydrothermal method for use as anode materials in SIBs. The designed annealing process produces crystalline SnO2/graphene aerogel (c‐SnO2/GA) nanocomposites. For the first time, the significant effects of SnO2 crystallinity on sodium storage performance are studied in detail. Notably, a‐SnO2/GA is more effective than c‐SnO2/GA in overcoming electrode degradation from large volume changes associated with charge–discharge processes. Surprisingly, the amorphous SnO2 delivers a high specific capacity of 380.2 mAh g−1 after 100 cycles at a current density of 50 mA g−1, which is almost three times as much as for crystalline SnO2 (138.6 mAh g−1). The impressive electrochemical performance of amorphous SnO2 can be attributed to the intrinsic isotropic nature, the enhanced Na+ diffusion coefficient, and the strong interaction between amorphous SnO2 and GA. In addition, amorphous SnO2 particles with the smaller size better function to relieve the volume expansion/shrinkage. This study provides a significant research direction aiming to increase the electrochemical performance of the anode materials used in SIBs.

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I_{normalp} = 2.69 \times 10^{5} n^{3 / 2} A D^{1 / 2} v^{1 / 2} C_{0}

Section: Resultsmentioning

confidence: 99%

Controlled SnO₂ Crystallinity Effectively Dominating Sodium Storage Performance

Fan

Yan

et al. 2016

Advanced Energy Materials

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196

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“…Various SnO 2 nanostructures and their carbon-based composites [21][22][23][24][25][26][27][28][29][30]have been designed to overcome the above-mentioned drawbacks. However, reducing the size of SnO 2 to nanoscale can only avoid fracture for just dozens of cycles because the nanoscale SnO 2 particles will re-agglomeration in the electrode.…”

mentioning

confidence: 99%

Fabrication of voids-involved SnO2@C nanofibers electrodes with highly reversible Sn/SnO2 conversion and much enhanced coulombic efficiency for lithium-ion batteries

Xie

Xia

et al. 2016

Journal of Power Sources

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Despite their potential application in lithium-ion battery electrodes, one apparent disadvantage for SnO 2based materials is that the electrodes sufferlow coulombic efficiency especially for the initial cycle, which originates from the irreversible conversion of SnO 2 to Sn, the formation of solid electrolyte interphase and the other possible side reactions. Here we design a novel nanofiber structure in which SnO 2 nanoparticles are well separated and confined by inner porous carbon framework and then hooped by outer carbon shell. The resultant SnO 2 /voids@C nanofibers electrode displays not only a high reversible capacity of 986mAh g-1 at 200 mA g-1 after 200 cycles, but also a high initial coulombic efficiency of 73.5%.It has been shown that such a rational design can efficiently reduce the side reactions and promote the reversible conversion of Sn to SnO 2 for both half and full cells.

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“…The TGA curve of NGAs reveals an initial weeny weight loss (<2%) from room temperature to 200°C, which could be ascribed to the evaporation of physically adsorbed water. Then, the primary weight loss (about 36.5%) between 200 and 650°C can be due to the oxidisation of GA, followed by a constant weight from 650 to 800°C, implying the thorough removal of GA [29]. Therefore, the content of NiCo 2 S 4 in NGAs is estimated to be 63.5%.…”

Section: Resultsmentioning

confidence: 99%

Self‐assembled 3D NiCo ₂ S ₄ nanotubes‐graphene aerogel composites as an excellent anode for Li‐ion batteries

Zhang

Wang

Jiu

et al. 2018

Micro & Nano Letters

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Three-dimensional nickel cobalt sulphide (NiCo 2 S 4) nanotubes-graphene aerogel composites (NGAs) are firstly assembled by an electrostatic interaction between the diallyldimethylammonium chloride-modified NiCo 2 S 4 nanotubes and graphene oxide (GO) sheets, followed by a steerable hydrothermal and freeze-drying process. The final samples are characterised by scanning electron microscope, transmission electron microscopy, X-ray diffraction and Brunauer-Emmett-Teller. The results reveal that the NiCo 2 S 4 nanotubes with a uniform diameter of about 200 nm tightly anchor onto the crumpled surface of graphene sheets and GO sheets self-assemble into an interconnected porous structure. When the composites are evaluated as an anode for lithium-ion batteries (LIBs), presenting an extremely admirable cycling stability (967.5 mAh g −1 after 100 cycles at a current density of 100 mA g −1) and excellent rate capability (as high as 654.7 mAh g −1 at a large rate of at 2000 mA g −1). This work proved that the NGAs may have a great application in LIBs.

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Tin Oxide/Graphene Aerogel Nanocomposites Building Superior Rate Capability for Lithium Ion Batteries

Cited by 43 publications

References 51 publications

Controlled SnO₂ Crystallinity Effectively Dominating Sodium Storage Performance

Controlled SnO₂ Crystallinity Effectively Dominating Sodium Storage Performance

Fabrication of voids-involved SnO2@C nanofibers electrodes with highly reversible Sn/SnO2 conversion and much enhanced coulombic efficiency for lithium-ion batteries

Self‐assembled 3D NiCo ₂ S ₄ nanotubes‐graphene aerogel composites as an excellent anode for Li‐ion batteries

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Tin Oxide/Graphene Aerogel Nanocomposites Building Superior Rate Capability for Lithium Ion Batteries

Cited by 43 publications

References 51 publications

Controlled SnO2 Crystallinity Effectively Dominating Sodium Storage Performance

Controlled SnO2 Crystallinity Effectively Dominating Sodium Storage Performance

Fabrication of voids-involved SnO2@C nanofibers electrodes with highly reversible Sn/SnO2 conversion and much enhanced coulombic efficiency for lithium-ion batteries

Self‐assembled 3D NiCo 2 S 4 nanotubes‐graphene aerogel composites as an excellent anode for Li‐ion batteries

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Controlled SnO₂ Crystallinity Effectively Dominating Sodium Storage Performance

Controlled SnO₂ Crystallinity Effectively Dominating Sodium Storage Performance

Self‐assembled 3D NiCo ₂ S ₄ nanotubes‐graphene aerogel composites as an excellent anode for Li‐ion batteries