In-situ Grown SnS2 Nanosheets on rGO as an Advanced Anode Material for Lithium and Sodium Ion Batteries

Chen, Hezhang; Bao, Zhenmin; Zhang, Jiafeng; Yu, Wanjing; Zheng, Junchao; Ding, Zhiying; Li, Hui; Liu, Ming; Bengono, D. A. Mifounde; Chen, Shunan; Tong, Hengqing

doi:10.3389/fchem.2018.00629

Cited by 43 publications

(20 citation statements)

References 49 publications

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“…The graphene and reduced graphene oxide (rGO) have been extensively used for energy storage and conversion applications, especially in lithium-ion batteries, owing to their unique two-dimensional structures with excellent flexibility, mechanical strength, chemical stability, and thermal and electronic conductivities (Rong et al, 2014;Deng et al, 2016;Ahn et al, 2019;Riyanto et al, 2019). Both graphene and rGO materials have been demonstrated to act as reliable supporting and buffering matrixes to improve electrochemical performance of high-capacity anode materials, such as SnO 2 and Si, by accommodating their drastic volume changes during the lithium storage (Jiang et al, 2017;Ma et al, 2017;Chen et al, 2018;Deng et al, 2019). Tri-dimensional hybrid materials consisting of graphene (or rGO) sheets and active anode particles can be served as promising free-standing anodes with free conductive additives and binders.…”

Section: Introductionmentioning

confidence: 99%

Free-Standing SnO2@rGO Anode via the Anti-solvent-assisted Precipitation for Superior Lithium Storage Performance

et al. 2019

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Metal oxides have been attractive as high-capacity anode materials for lithium-ion batteries. However, oxide anodes encounter drastic volumetric changes during lithium ion storage through the conversion reaction and alloying/dealloying processes, leading to rapid capacity decay and poor cycling stability. Here, we report a free-standing SnO 2 @reduced graphene oxide (SnO 2 @rGO) composite anode, in which SnO 2 nanoparticles are tightly wrapped within wrinkled rGO sheets. The SnO 2 @rGO sheet is assembled in high porosity via an anti-solvent-assisted precipitation of dispersed SnO 2 nanoparticles and graphene oxide sheets in the distilled water, followed by the filtration and post-annealing processes. Significantly enhanced lithium storage performance has been obtained of the SnO 2 @rGO anode compared with the bare SnO 2 anode material. A high charge capacity above 700 mAh g −1 can be achieved with a satisfying 95.6% retention after 50 cycles at a current density of 500 mA g −1 , superior to reserved 126 mAh g −1 and a much lower 16.8% retention of the bare SnO 2 anode. XRD pattern and HRTEM images of the cycled SnO 2 @rGO anode material verify the expected oxidation of Sn to SnO 2 at the fully-charged state in the 50th cycle. In addition, FESEM and TEM images reveal the well-preserved free-standing structure after cycling, which accounts for high reversible capacity and excellent cycling stability of such a SnO 2 @rGO anode. This work provides a promising SnO 2-based anode for high-capacity lithium-ion batteries, together with an effective fabrication adoptable to prepare different free-standing composite materials for device applications.

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Section: Introductionmentioning

confidence: 99%

Free-Standing SnO2@rGO Anode via the Anti-solvent-assisted Precipitation for Superior Lithium Storage Performance

et al. 2019

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“…Moreover, surface coating with conductive material can increase the electronic conductivity between particles (Wang et al, 2010;Fathollahi et al, 2015;Ahn et al, 2019) and provide paths in all directions for the fast transmission of electrons (Wang et al, 2009;Jang et al, 2011;Fan et al, 2014). Graphene with high electrical conductivity has been adopted to improve the cycling stability and rate capability of cathode material (Ding et al, 2010;Zhou et al, 2011;Shi et al, 2012;Tang et al, 2012;Chen et al, 2018;Wang et al, 2018). Ding et al (2010) prepared nano-structured LiFePO 4 /graphene using co-precipitation and sintering at 700 • C for 18 h under argon flow.…”

Section: Introductionmentioning

confidence: 99%

One-Step Microwave Synthesis of Micro/Nanoscale LiFePO4/Graphene Cathode With High Performance for Lithium-Ion Batteries

Liu

Yan

et al. 2020

Front. Chem.

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In this study, micro/nanoscale LiFePO 4 /graphene composites are synthesized successfully using a one-step microwave heating method. One-step microwave heating can simplify the reduction step of graphene oxide and provide a convenient, economical, and effective method of preparing graphene composites. The structural analysis shows that LiFePO 4 /graphene has high phase purity and crystallinity. The morphological analysis shows that LiFePO 4 /graphene microspheres and micron blocks are composed of densely aggregated nanoparticles; the nanoparticle size can shorten the diffusion path of lithium ions and thus increase the lithium-ion diffusion rate. Additionally, the graphene sheets can provide a rapid transport path for electrons, thus increasing the electronic conductivity of the material. Furthermore, the nanoparticles being packed into the micron graphene sheets can ensure stability in the electrolyte during charging and discharging. Raman analysis reveals that the graphene has a high degree of graphitization. Electrochemical analysis shows that the LiFePO 4 /graphene has an excellent capacity, high rate performance, and cycle stability. The discharge capacities are 166.3, 156.1, 143.0, 132.4, and 120.9 mAh g −1 at rates of 0.1, 1, 3, 5, and 10 C, respectively. The superior electrochemical performance can be ascribed to the synergy of the shorter lithium-ion diffusion path achieved by LiFePO 4 nanoparticles and the conductive networks of graphene.

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“…However, two main problems that delay the commercialization process of SnO 2 anodes are poor conductivity and severe volume expansion. Researchers have done a lot of research work to solve these problems, and the most effective strategy at present is to combine with carbon materials (Du et al, 2014; Chen et al, 2018d; Hou et al, 2018; Li et al, 2018), which is indeed a great strategy. The introduction of carbon can limit the size of the material to obtain nanomaterials (Wang et al, 2013; Chen et al, 2018c).…”

Section: Introductionmentioning

confidence: 99%

Heterostructured SnO2-SnS2@C Embedded in Nitrogen-Doped Graphene as a Robust Anode Material for Lithium-Ion Batteries

Bao

Wang

et al. 2019

Front. Chem.

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Tin-based anode materials with high capacity attract wide attention of researchers and become a strong competitor for the next generation of lithium-ion battery anode materials. However, the poor electrical conductivity and severe volume expansion retard the commercialization of tin-based anode materials. Here, SnO 2 -SnS 2 @C nanoparticles with heterostructure embedded in a carbon matrix of nitrogen-doped graphene (SnO 2 -SnS 2 @C/NG) is ingeniously designed in this work. The composite was synthesized by a two-step method. Firstly, the SnO 2 @C/rGO with a nano-layer structure was synthesized by hydrothermal method as the precursor, and then the SnO 2 -SnS 2 @C/NG composite was obtained by further vulcanizing the above precursor. It should be noted that a carbon matrix with nitrogen-doped graphene can inhibit the volume expansion of SnO 2 -SnS 2 nanoparticles and promote the transport of lithium ions during continuous cycling. Benefiting from the synergistic effect between nanoparticles and carbon matrix with nitrogen-doped graphene, the heterostructured SnO 2 -SnS 2 @C/NG further fundamentally confer improved structural stability and reaction kinetics for lithium storage. As expected, the SnO 2 -SnS 2 @C/NG composite exhibited high reversible capacity (1201.2 mA h g −1 at the current rate of 0.1 A g −1 ), superior rate capability and exceptional long-life stability (944.3 mAh g −1 after 950 cycles at the current rate of 1.0 A g −1 ). The results demonstrate that the SnO 2 -SnS 2 @C/NG composite is a highly competitive anode material for LIBs.

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In-situ Grown SnS2 Nanosheets on rGO as an Advanced Anode Material for Lithium and Sodium Ion Batteries

Cited by 43 publications

References 49 publications

Free-Standing SnO2@rGO Anode via the Anti-solvent-assisted Precipitation for Superior Lithium Storage Performance

Free-Standing SnO2@rGO Anode via the Anti-solvent-assisted Precipitation for Superior Lithium Storage Performance

One-Step Microwave Synthesis of Micro/Nanoscale LiFePO4/Graphene Cathode With High Performance for Lithium-Ion Batteries

Heterostructured SnO2-SnS2@C Embedded in Nitrogen-Doped Graphene as a Robust Anode Material for Lithium-Ion Batteries

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