Dual-functionalized coating engineering toward buffering mechanical stress of the Si anode

Zhang, X.; Fang, Tingting; Gao, Yunzhi; Liao, Lixia; Ma, Ting; Gao, Shuai; Wang, Mingchuan

doi:10.1016/j.mtener.2020.100561

Cited by 8 publications

(9 citation statements)

References 60 publications

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“…presented a simple and controlled approach for fabricating a yolk‐shell Si@V−C−M composite with two protective shell layers based on the above concerns. The novelty of this architecture was that the outside MoS 2 shell may act as a mechanical stress shielding layer, ensuring a stable interface, while the inner polyvinylpyrrolidone (PVP) derived carbon shell can offer inner void spaces, reducing the volume change of the Si core [102] . Hanyang Gao et al.…”

Section: Different Structural and Morphological Modifications Of Si−c...mentioning

confidence: 99%

“…The novelty of this architecture was that the outside MoS 2 shell may act as a mechanical stress shielding layer, ensuring a stable interface, while the inner polyvinylpyrrolidone (PVP) derived carbon shell can offer inner void spaces, reducing the volume change of the Si core. [102] Hanyang Gao et al have created a scalable Si@TiO 2 @C structure (SA-SiTC) based on core-shell Si@TiO 2 nano. The carbon filler and TiO 2 layer can effectively control the SEI film cracking, thus ensuring the mechanical stability of SA-SiTC.…”

Section: Yolk Shell Structurementioning

confidence: 99%

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Recent Research Progress of Silicon‐Based Anode Materials for Lithium‐Ion Batteries

Chen

et al. 2022

ChemistrySelect

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Silicon (Si)‐based materials have become one of the most promising anode materials for lithium‐ion batteries due to their high energy density, but in practice, lithium ions embedded in Si anode materials can lead to a maximum volume expansion of nearly three times, which can cause material chalking and shedding, thus affecting the battery cycle life, while the poor electrical conductivity of Si as a semiconductor material also restricts its further development. A lot of research has been carried out based on these problems. This paper reviews the recent research in three aspects: binder, Si surface structure function, and Si carbon composites, summarizes the research lines, methods, and problems of different Si‐based materials, and gives an outlook on their future research.

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Section: Different Structural and Morphological Modifications Of Si−c...mentioning

confidence: 99%

Section: Yolk Shell Structurementioning

confidence: 99%

Recent Research Progress of Silicon‐Based Anode Materials for Lithium‐Ion Batteries

Chen

et al. 2022

ChemistrySelect

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“…It has been demonstrated that the electrochemical performance of silicon can be effectively improved by blocking the direct contact between silicon and electrolyte through surface coating modification. In addition to the coating of carbon materials, there are many other coating materials, such as metals, [105–112] metal silicide, [113–115] metal oxides, [116–127] metal sulfides, [37,128–134] silicon oxides, [135–145] and others [146–150] . The coating can exist in a tough or flexible form to buffer the volume expansion of silicon during cycling.…”

Section: Si/metallic or Nonmetallic Compositesmentioning

confidence: 99%

“…In recent years, metal sulfides have attracted the attention of researchers because their theoretical capacity exceeds that of commercial carbonaceous materials. 2D layered transition metal dichalcogenides (TMDs) with a graphite‐like structure, such as molybdenum disulfide (MoS 2 ), [37,129–131] tin disulfide (SnS 2 ), [132] and tungsten disulfide (WS 2 ), [133,154–155] have been widely used as anode materials [130] . Since graphene‐like layered MoS 2 can be very homogeneously blended with carbonaceous materials, combining these two materials is considered as an effective strategy to improve the electrochemical performance of LIBs anodes [128] .…”

Section: Si/metallic or Nonmetallic Compositesmentioning

confidence: 99%

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Research Progress on Coating Structure of Silicon Anode Materials for Lithium‐Ion Batteries

Liu

Guan

et al. 2021

ChemSusChem

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Silicon, which has been widely studied by virtue of its extremely high theoretical capacity and abundance, is recognized as one of the most promising anode materials for the next generation of lithium‐ion batteries. However, silicon undergoes tremendous volume change during cycling, which leads to the destruction of the electrode structure and irreversible capacity loss, so the promotion of silicon materials in commercial applications is greatly hampered. In recent years, many strategies have been proposed to address these shortcomings of silicon. This Review focused on different coatings materials (e. g., carbon‐based materials, metals, oxides, conducting polymers, etc.) for silicon materials. The role of different types of materials in the modification of silicon‐based material encapsulation structure was reviewed to confirm the feasibility of the protective layer strategy. Finally, the future research direction of the silicon‐based material coating structure design for the next‐generation lithium‐ion battery was summarized.

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Insights into Electrode Architectures and Lithium‐Ion Transport in Polycrystalline V₂O₅ Cathodes of Solid‐State Batteries

Hui¹

2023

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Polymer‐based solid‐state batteries (SSBs) have received increasing attentions due to the absence of interfacial problems in sulfide/oxide‐type SSBs, but the lower oxidation potential of polymer‐based electrolytes greatly limits the application of conventional high‐voltage cathode such as LiNixCoyMnzO2 (NCM) and lithium‐rich NCM. Herein, this study reports on a lithium‐free V2O5 cathode that enables the applications of polymer‐based solid‐state electrolyte (SSE) with high energy density due to the microstructured transport channels and suitable operational voltage. Using a synergistic combination of structural inspection and non‐destructive X‐ray computed tomography (X‐CT), it interprets the chemo–mechanical behavior that determines the electrochemical performance of the V2O5 cathode. Through detailed kinetic analyses such as differential capacity and galvanostatic intermittent titration technique (GITT), it is elucidated that the hierarchical V2O5 constructed through microstructural engineering exhibits smaller electrochemical polarization and faster Li‐ion diffusion rates in polymer‐based SSBs than those in the liquid lithium batteries (LLBs). By the hierarchical ion transport channels created by the nanoparticles against each other, superior cycling stability (≈91.7% capacity retention after 100 cycles at 1 C) is achieved at 60 in polyoxyethylene (PEO)‐based SSBs. The results highlight the crucial role of microstructure engineering in designing Li‐free cathodes for polymer‐based SSBs.

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Dual-functionalized coating engineering toward buffering mechanical stress of the Si anode

Cited by 8 publications

References 60 publications

Recent Research Progress of Silicon‐Based Anode Materials for Lithium‐Ion Batteries

Recent Research Progress of Silicon‐Based Anode Materials for Lithium‐Ion Batteries

Research Progress on Coating Structure of Silicon Anode Materials for Lithium‐Ion Batteries

Insights into Electrode Architectures and Lithium‐Ion Transport in Polycrystalline V₂O₅ Cathodes of Solid‐State Batteries

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Dual-functionalized coating engineering toward buffering mechanical stress of the Si anode

Cited by 8 publications

References 60 publications

Recent Research Progress of Silicon‐Based Anode Materials for Lithium‐Ion Batteries

Recent Research Progress of Silicon‐Based Anode Materials for Lithium‐Ion Batteries

Research Progress on Coating Structure of Silicon Anode Materials for Lithium‐Ion Batteries

Insights into Electrode Architectures and Lithium‐Ion Transport in Polycrystalline V2O5 Cathodes of Solid‐State Batteries

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Insights into Electrode Architectures and Lithium‐Ion Transport in Polycrystalline V₂O₅ Cathodes of Solid‐State Batteries