Effect of Particle Size and Surface Treatment on Si/Graphene Nanocomposite Lithium-Ion Battery Anodes

Cen, Yinjie; Qin, Qingwei; Sisson, Richard D.; Liang, Jianyu

doi:10.1016/j.electacta.2017.08.139

Cited by 24 publications

(15 citation statements)

References 21 publications

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“…3 Ideal process for the preparation of EVA/clay adhesive sheets LAP rather than the others. This trend of the initial specific capacity decreasing with the particle size is inconsistent with other published studies and can be attributed to the increased aggregation in small nanoparticles (Cen et al 2017;Liu et al 2005). Additionally, the zeta potential result is presented in Fig.…”

Section: Cone Calorimetric Test (Cct)contrasting

confidence: 86%

Thermal property and flame retardancy comparisons based on particle size and size distribution of clays in ethylene vinyl acetate (EVA) adhesive sheets for cross-laminated timber (CLT)

et al. 2019

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Cross-laminated timber (CLT) is widely used as a building material, and recent interest in this material has increased rapidly due to environmental problems. For instance, the phenol resorcinol formaldehyde (PRF) used as an adhesive in CLT can release toxic gases during a fire, resulting in adverse health effects. These properties cause concern regarding the use of CLT as a building material and restrict its use. In this study, the effects of the particle size and size distribution of clays on the thermal properties and flame retardancy of composites were investigated. Ethylene vinyl acetate (EVA)/clay adhesive sheets were prepared to substitute for the PRF that is used to cohere the timber in CLT. To increase the dispersibility of clay inside the EVA matrix, the clays were organically treated using cetyltrimethylammonium bromide (CTAB), and the interlayer spacing was determined via X-ray diffraction. In addition, the EVA/clay adhesive sheets presented a broad peak due to their good dispersion. As the clay contents increasingly degraded, the thermal properties, such as the degradation temperature and final residue, of the EVA/clay adhesive sheets enhanced. However, the adhesive sheets showed continuous improvement only for a specific particle size and size distribution due to the difference in the degree of organic treatment. The results from cone calorimetry showed a decrease in the heat release rate (HRR) as the clay content increased. With respect to the flame retardancy of EVA/clay adhesive sheets, clay with a large particle size is more effective than clay with a small particle size, while the size distribution does not have a strong influence.

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Section: Cone Calorimetric Test (Cct)contrasting

confidence: 86%

Thermal property and flame retardancy comparisons based on particle size and size distribution of clays in ethylene vinyl acetate (EVA) adhesive sheets for cross-laminated timber (CLT)

et al. 2019

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“…The peaks at 15.02°, 28.19°, 32.12°, 41.88°, 49.96°, and 52.45°, could be ascribed to the (001), (100), (101), (102), (110) and (111) planes of SnS 2 , respectively . The characteristic peaks at 28.44°, 47.30°, 56.12°, 69.13°, and 76.37° were assigned to the (111), (220), (311), (400), and (331) planes of Si, respectively . No additional diffraction peaks were observed, indicating that no other crystalline impurities were formed.…”

Section: Resultsmentioning

confidence: 94%

“…The silicon nanoparticles were soaked for one hour in a piranha solution heated to 80 °C (H 2 SO 4 /H 2 O 2 =3:1 v / v ). The silicon nanoparticles were then successively washed with deionized water and ethanol three times by centrifugation and dried in a vacuum oven at 80 °C for 12 h to obtain silicon nanoparticles with surface‐modified hydroxyl groups …”

Section: Methodsmentioning

confidence: 99%

Si@SnS₂–Reduced Graphene Oxide Composite Anodes for High‐Capacity Lithium‐Ion Batteries

Dai

Liao

et al. 2019

ChemSusChem

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One of the key challenges for the development of lithium‐ion batteries is the preparation of high‐performance anode materials. In this paper, a micro/nanostructured Si@SnS2‐rGO composite is reported in which Si nanoparticles with a particle size of 30 nm are electrostatically anchored on a 3D reduced graphene oxide (rGO) network and mixed with SnS2. The step‐wise lithiation/delithiation of SnS2 provided space‐constraining effects to accommodate volume expansion and particle aggregation, thereby alleviating the volume expansion of Si during cycling as well as enhancing the structural stability, whereas the rGO in the 3D network stabilized the composite. The composite had a high specific capacity of 1480.1 mAh g−1 after 200 cycles at a current density of 200 mA g−1 and a high stability at rates of 200–3000 mA g−1. The capacity attenuation after cycling was only 89.18 %. A stable specific capacity (425.5 mAh g−1) was achieved after 600 cycles at a current density of 3000 mA g−1. Therefore, the micro/nanostructured Si@SnS2‐rGO composite is a promising anode material for use in lithium‐ion batteries.

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“…This process can modify the surface of the Si nanoparticles, that is, the hydroxyl groups are grafted on the surface of the Si nanoparticles to form Si-OH. Second, after adding APTES to it and going through the hydrolysis process of APTES, the siloxane group of APTES is easily grafted onto the Si nanoparticles with-OH end caps [31][32][33]. Then, the APTES functionalized Si nanoparticles were directly diffused in the urea-dissolved GO hydrosol by ultrasonic treatment, and CNF was added thereto.…”

Section: Structure and Morphologymentioning

confidence: 99%

Synthesis and Electrochemical Performance of Electrostatic Self-Assembled Nano-Silicon@N-Doped Reduced Graphene Oxide/Carbon Nanofibers Composite as Anode Material for Lithium-Ion Batteries

Cong¹,

Park²,

Jo³

et al. 2021

Preprint

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We report a self-assembly synthesis of silicon nanoparticles/nitrogen-doped reduced graphene oxide/ carbon nanofiber (Si@N-doped rGO/CNF) composites as potential high-performance anodes for rechargeable lithium-ion batteries (LIB) through the electrostatic attraction between amino and carboxyl groups. Nitrogen atoms generate a large number of vacancies or defects on the graphite plane, providing additional transmission channels for the diffusion of lithium ions, and improving the conductivity of the electrode. Carbon nanofiber (CNF) can help maintain the stability of the electrode structure and prevent silicon nanoparticles from falling off the electrode, prevent silicon nanoparticles from being directly exposed to the electrolyte, and can form a stable solid electrolyte interface (SEI) film. The three-dimensional conductive structure composed of Si, nitrogen atom-doped reduced graphene oxide (N-doped rGO), and CNF can effectively buffer the volume changes of silicon nanoparticles, shorten the transmission distance of lithium ions (Li+) and electrons, and make the electrode have good conductivity and stability in mechanical properties. In addition, compared with the Si@N-doped rGO and Si/rGO/CNF composite electrode, the Si@N-doped rGO/CNF composite electrode shows good cycle performance and rate capability, and its reversible specific capacity can reach 1418.8 mAh/g. The capacity retention rate is 64.7%, and the coulomb efficiency is 95%.

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Effect of Particle Size and Surface Treatment on Si/Graphene Nanocomposite Lithium-Ion Battery Anodes

Cited by 24 publications

References 21 publications

Thermal property and flame retardancy comparisons based on particle size and size distribution of clays in ethylene vinyl acetate (EVA) adhesive sheets for cross-laminated timber (CLT)

Thermal property and flame retardancy comparisons based on particle size and size distribution of clays in ethylene vinyl acetate (EVA) adhesive sheets for cross-laminated timber (CLT)

Si@SnS₂–Reduced Graphene Oxide Composite Anodes for High‐Capacity Lithium‐Ion Batteries

Synthesis and Electrochemical Performance of Electrostatic Self-Assembled Nano-Silicon@N-Doped Reduced Graphene Oxide/Carbon Nanofibers Composite as Anode Material for Lithium-Ion Batteries

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Effect of Particle Size and Surface Treatment on Si/Graphene Nanocomposite Lithium-Ion Battery Anodes

Cited by 24 publications

References 21 publications

Thermal property and flame retardancy comparisons based on particle size and size distribution of clays in ethylene vinyl acetate (EVA) adhesive sheets for cross-laminated timber (CLT)

Thermal property and flame retardancy comparisons based on particle size and size distribution of clays in ethylene vinyl acetate (EVA) adhesive sheets for cross-laminated timber (CLT)

Si@SnS2–Reduced Graphene Oxide Composite Anodes for High‐Capacity Lithium‐Ion Batteries

Synthesis and Electrochemical Performance of Electrostatic Self-Assembled Nano-Silicon@N-Doped Reduced Graphene Oxide/Carbon Nanofibers Composite as Anode Material for Lithium-Ion Batteries

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Si@SnS₂–Reduced Graphene Oxide Composite Anodes for High‐Capacity Lithium‐Ion Batteries