Designing of hierarchical mesoporous/macroporous silicon-based composite anode material for low-cost high-performance lithium-ion batteries

Cui, Min; Wang, Lin; Guo, Xianwei; Wang, Errui; Yang, Yubo; Wu, Tianhao; He, Di; Liu, Shiqi; Yu, Haijun

doi:10.1039/c8ta11684a

Cited by 56 publications

(25 citation statements)

References 42 publications

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“…X‐ray diffraction (XRD) was used to examine the phase purity and crystallographic structure of the p‐SiNSs and p‐SiNSs@C composites. XRD pattern of p‐SiNSs can be indexed to a polycrystalline phase (Figure a, black curve) . All the p‐SiNSs@C composites exhibit very consistent XRD pattern with p‐SiNSs, suggesting that the main structure of Si remained unchanged during the acid washing and growing carbon process.…”

Section: Resultsmentioning

confidence: 92%

Catalytic Growth of Graphitic Carbon‐Coated Silicon as High‐Performance Anodes for Lithium Storage

Shi

Nie

et al. 2019

Energy Tech

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Although silicon is considered as one of the most promising anode materials in next‐generation lithium‐ion batteries, large volumetric expansion during cycling hampers its practical application. The fabrication of silicon/carbon composites is an effective way to improve electrical conductivity and inhibit electroactive material delaminating from the current collector. Herein, a graphitic carbon‐coated porous silicon nanospheres (p‐SiNSs@C) composite is prepared through a chemical vapor deposition (CVD) technique by using the magnesiothermic reduction by‐product MgO as a template and catalyst. With the template of in situ generation of MgO, the p‐SiNSs@C material is obtained in a very short time. Due to the graphitic carbon shell and porous structure inside the silicon nanospheres, the obtained p‐SiNSs@C, with 8 min carbon growing time (p‐SiNSs@C‐2), deliver a high initial reversible capacity of 2220 mAh g−1 at 0.1 A g−1 and respectable rate capability. Furthermore, the p‐SiNSs@C‐2//LiCoO2 Li‐ion full cell displays a high energy density of ≈409 Wh kg−1 and good cycling performance. The high performance of the p‐SiNSs@C‐2 composite can be attributed to the synergistic effect of nanoscale‐sized Si, porous structure, and stable carbon shell.

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Section: Resultsmentioning

confidence: 92%

Catalytic Growth of Graphitic Carbon‐Coated Silicon as High‐Performance Anodes for Lithium Storage

Shi

Nie

et al. 2019

Energy Tech

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“…Rice husks porous silicon anode with the reversible capacity of 345 mAh g −1 remained after 100 cycles at 50 mA g −1 . Perlite porous silicon anode delivered a high reversible capacity of 1547 mAh g −1 and excellent cycling stability (85% capacity retention after 600 discharge‐charge cycles) at a current density of 358 mA g −1 (0.1 C) as well as good rate performance (778 mAh g −1 at 2 C) and diatomaceous earth porous silicon anode capacity retention can reach 99.5% after 200 cycles, and the reversible capacity can reach 534.3 mA h g −1 even at 500 mA g −1 …”

Section: Suitable Structural Design Of Silicon Anodementioning

confidence: 99%

Silicon Anodes for High‐Performance Storage Devices: Structural Design, Material Compounding, Advances in Electrolytes and Binders

Hou

Yang

2020

ChemNanoMat

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Silicon has an extremely high theoretical capacity, a low voltage platform, and abundant natural reserves. It is considered to be one of the most promising anode materials for lithium-ion batteries. However, there are still many problems with silicon as an anode material for lithium-ion batteries. During the lithiation/delithiation of silicon, a huge volume expansion occurs, causing the silicon particles to pulverize and the capacity to drop sharply. Furthermore, the continuous increase in the silicon surface solid electrolyte interphase (SEI) films and the poor conductivity of silicon affect the specific capacity of the battery. Means to improve silicon-based anodes with regard to electrode cycling performance and electrode capacity include structural design, composite preparation, or improvements in electrolytes and binders (for example, designing silicon nanomaterials of different dimensions from 0D to 3D, including silicon nanoparticles, nanowires, nanorods, thin films, porous silicon, and core-shell structures). Silicon has been combined with different materials to buffer its own volume expansion, resulting in excellent performance. In addition, the design of a reasonable electrolyte solution, as well as the development of a selfhealing binder is one of the main methods to improve Sibased anodes. In recent years, sodium/potassium ion batteries have been increasingly studied, and silicon and sodium/potassium can be alloyed. The corresponding theoretical capacity can reach 954 mAh g À 1 and 955 mAh g À 1 , respectively. Advances in silicon-based anodes for sodium/ potassium ion storage are summarized herein.ductility. [25] It can increase the conductivity of silicon and adapt to the large volume expansion of silicon. In addition, some are compounded with silicon or metal or metal oxides. Such as copper, silver, tin oxide and titanium oxide. [39][40][41][42][43][44] In addition to changing the silicon's own morphological structure and preparing composite materials, the design and selection of electrolytes and binders is to improve the performance of silicon-based electrodes from the outside. By selecting the appropriate electrolytes, the electrode materials can be effectively reduced deterioration. At present, various additive-modified organic solvent electrolytes, ionic liquid electrolytes, and all-solid electrolytes are widely used in silicon-based anodes. [45][46][47][48] In addition, it is widely applicable to the binder polyvinylidene fluoride(PVDF) of lithium ion battery electrode materials, but

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“…However, due to the ever‐increasing demands for advanced power sources, the practical LIBs technology cannot meet the long‐range requirements [1a,3] . The most promising solution is to develop high‐capacity electrode materials, [4] and high‐capacity anode materials are one of the most effective ways to achieve this purpose [4a,5] . Silicon (Si) has attracted remarkable attention for the superior theoretical capacity (≈3580 mAh g −1 based on the Li 15 Si 4 alloy at room temperature), low discharge potential (≤450 mV vs. Li/Li + ), and abundant reserves [1a,6] .…”

Section: Introductionmentioning

confidence: 99%

Improving Lithium‐Ion Diffusion Kinetics in Nano‐Si@C Anode Materials with Hierarchical MoS₂ Decoration for High‐Performance Lithium‐Ion Batteries

Gan

Huang

et al. 2021

ChemElectroChem

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A carbon layer on a silicon anode not only acts as a structural buffer to alleviate the tremendous volume expansion of silicon, but also enhances electrical conductivity. However, the carbon layer cannot improve the diffusion kinetics of Li + . Molybdenum disulfide (MoS 2 ) nanosheets are introduced on the outermost layer of yolk-shell silicon@carbon to design urchin-like hierarchical anode materials, which is of great benefit in structural stability. By contrast with the yolk-shell silicon@carbon structure, the diffusion coefficient of Li + is improved, with 3.27 times greater performance during the delithiation processes and 2.04 times greater during the lithiation process with urchin-like hierarchical structure, showing robust diffusion kinetics. Moreover, the MoS 2 nanosheets are able to enhance the delithiation reversibility of Li 15 Si 4 alloy formed during lithiation process. Because the MoS 2 nanosheets promote the structural stability, delithiation reversibility, and diffusion kinetics of Li + during lithiation/delithiation processes, the prepared hierarchical Si@C@MoS 2 composites exhibit a high reversible specific capacity of 1025 mAh g À 1 with a capacity retention of approximately 81 % after 400 cycles at a current density of 1000 mAh g À 1 , and the reversible specific capacity can reach 819 mAh g À 1 even under a high rate of 5000 mA g À 1 .

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Designing of hierarchical mesoporous/macroporous silicon-based composite anode material for low-cost high-performance lithium-ion batteries

Cited by 56 publications

References 42 publications

Catalytic Growth of Graphitic Carbon‐Coated Silicon as High‐Performance Anodes for Lithium Storage

Catalytic Growth of Graphitic Carbon‐Coated Silicon as High‐Performance Anodes for Lithium Storage

Silicon Anodes for High‐Performance Storage Devices: Structural Design, Material Compounding, Advances in Electrolytes and Binders

Improving Lithium‐Ion Diffusion Kinetics in Nano‐Si@C Anode Materials with Hierarchical MoS₂ Decoration for High‐Performance Lithium‐Ion Batteries

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Designing of hierarchical mesoporous/macroporous silicon-based composite anode material for low-cost high-performance lithium-ion batteries

Cited by 56 publications

References 42 publications

Catalytic Growth of Graphitic Carbon‐Coated Silicon as High‐Performance Anodes for Lithium Storage

Catalytic Growth of Graphitic Carbon‐Coated Silicon as High‐Performance Anodes for Lithium Storage

Silicon Anodes for High‐Performance Storage Devices: Structural Design, Material Compounding, Advances in Electrolytes and Binders

Improving Lithium‐Ion Diffusion Kinetics in Nano‐Si@C Anode Materials with Hierarchical MoS2 Decoration for High‐Performance Lithium‐Ion Batteries

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Improving Lithium‐Ion Diffusion Kinetics in Nano‐Si@C Anode Materials with Hierarchical MoS₂ Decoration for High‐Performance Lithium‐Ion Batteries