Anchoring 1T/2H MoS<sub>2</sub> nanosheets on carbon nanofibers containing Si nanoparticles as a flexible anode for lithium–ion batteries

Du, Xianping; Huang, Ying; Feng, Zhenhe; Wang, Jiaming; Duan, Zhiliang; Sun, Xu

doi:10.1039/d2qm00742h

Cited by 10 publications

(4 citation statements)

References 55 publications

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“…As expected, the biomimetic AGO−Si/C electrode, under various mass loading of 1.6, 2.9, 3.5 and 4.1 mg cm −2 , can deliver the impressive areal-capacity of 3.5, 6.9, 7.4, and 10.0 mAh cm −2 , respectively (Figure 4b). It should be noticed that the maximum areal−capacity of biomimetic AGO−Si/C electrode is markedly superior to previous reported Si-based anodes [41][42][43][44][45][46][47][48][49][50][51][52] (Figure 4c; Table S1, Supporting Information). Due to the fast electron/ion migration within 3Dinterweaved carbon architecture, the AGO−Si/C electrode delivers high areal-capacities of 2.2, 2, 1.5, and 1.1 mAh cm −2 under different areal current densities of 0.25, 0.5, 1.25, and 2.5 mA cm −2 , respectively (Figure 4d; Figure S10a, Supporting Information).…”

Section: Electrochemical Performancementioning

confidence: 61%

Biomimetics‐Inspired Architecture Enables the Strength–Toughness of Ultrahigh‐Loading Silicon Electrode

Sun,

Wang,

Zhou

et al. 2024

Adv Funct Materials

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Silicon (Si), as one of the most promising anode candidates, is expected to improve the energy density of Li−ion batteries due to its high specific capacity (≈4200 mAh g−1). However, the cyclic performance of Si anode is unsatisfactory for practical usage due to its inadequate toughness when exceeding the mass loading beyond 2 mg cm−2, which triggers unceasing electrode breakage. Here, a biomimetic Si electrode is created by interconnecting vertically aligned graphene oxide sheets with conductive carbon nanotubes (AGO−Si/C). Unlike reported structures, the AGO−Si/C electrode exhibits superior interlaminar toughness owing to its unique crumpling architecture of reversible interlayer slipping. The elastic structure releases the accumulative lithiation stress of Si nanoparticles to address the degraded inactivation. Thus, the AGO−Si/C electrode shows long−lived cycles by toughening the structure, allowing the fabrication of very thick loading (4.1 mg cm−2) with an impressive areal capacity of 10.0 mAh cm−2. This discovery offers an easily scalable method for graphite/Si anode with high areal capacity that exceeds the commercial−level of 5 mAh cm−2.

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Section: Electrochemical Performancementioning

confidence: 61%

Biomimetics‐Inspired Architecture Enables the Strength–Toughness of Ultrahigh‐Loading Silicon Electrode

Sun,

Wang,

Zhou

et al. 2024

Adv Funct Materials

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“…The C 1s spectrum could be divided into three peaks at 284.8, 286, and 288.6 eV, assigned to the C–C, C–O, and CO bond, respectively, indicating that the carbon source was encapsulated well on the SiO x particles after the pyrolysis process (Figure c). , The O 1s spectrum could be decomposed into the Co–O bond, Si–O bond, C–O bond, and CO bond (Figure d), and the metal Co–O bond further revealed that the metal oxide CoO was fabricated successfully. The Si 2p spectrum could be deconvoluted into Si 1+ , Si 2+ , Si 3+ , and Si 4+ in SiO x (Figure e). , As it is seen from the Co 2p high-resolution XPS spectra (Figure f), the two peaks at 780.2 and 796.2 eV were associated with Co 2p 3/2 and Co 2p 1/2 and the two peaks at 786.6 and 802.2 eV belonged to the satellite peaks of Co 2p 3/2 and Co 2p 1/2 , respectively. The above experimental results could fully demonstrate that the porous structure of the SiO x @C@CoO composite was obtained.…”

Section: Results and Discussionmentioning

confidence: 84%

“…The Si 2p spectrum could be deconvoluted into Si 1+ , Si 2+ , Si 3+ , and Si 4+ in SiO x (Figure 3e). 40,41 As it is seen from the Co 2p high-resolution XPS spectra (Figure 3f), the two peaks at 780.2 and 796.2 eV were associated with Co 2p 3/2 and Co 2p 1/2 and the two peaks at 786.6 and 802.2 eV belonged to the satellite peaks of Co 2p 3/2 and Co 2p 1/2 , respectively. The above experimental results could fully demonstrate that the porous structure of the SiO x @C@CoO composite was obtained.…”

Section: Resultsmentioning

confidence: 85%

Carbon Layer and CoO Nanosheet Dual-Encapsulated SiO_x Particles for Ultra-High Specific Capacity Lithium-Ion Batteries

Huang

Yuan

et al. 2023

Energy Fuels

Self Cite

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Silicon-based (Si-based) materials have attracted considerable attention due to their extremely high specific capacity, while the huge volume change up to 400% during cycling severely limits their widespread use. Silicon-oxygen (SiO x ) anode materials, belonging to silicon-based materials, are considered to be more promising anode materials for practical applications due to their lower volume expansion without losing the high capacity. However, the existence of the volume expansion and the poor electrical conductivity of SiO x anode materials cannot be ignored. The encapsulation of SiO x particles by introducing a conductive carbon layer can greatly alleviate the volume expansion issue and improve the conductivity of the composites. In addition, to further boost the lithium storage capacity of the composites, the SiO x @ C@CoO composites were obtained by an electrostatic self-assembly of CoO nanosheets onto the surface of SiO x @C materials. The introduction of CoO nanosheets increased the specific surface area of the composites, thereby enlarging the contact area with active Li + and reducing the ion/electron transport radius, which in turn improved the lithium storage capacity of the composites. The final SiO x @C@CoO composite has an excellent electrochemical performance, with a reversible capacity of 1120 mAh g −1 after 100 cycles at 0.2 A g −1 .

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“…Du et al [30] demonstrated that the Si@CNF@1T/2H MoS2 electrode shows promising potential for flexible and free-standing anode materials for LIBs, exhibiting good rate capability, cycle performance, and a high initial coulombic efficiency (ICE) of 94.5%. Shu et al [31] confirmed the lithiated MoS2 phase change through DFT and ab initio molecular dynamics (AIMD) simulations.…”

Section: Introductionmentioning

confidence: 99%

Multiphase MoS2 Monolayer: A Promising Anode Material for Mg-Ion Batteries

Panjulingam

Lakshmipathi

2023

Preprint

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Given the potential availability, non-toxicity, and environmental acceptability of alternatives to lithium-ion batteries (LIBs), secondary batteries utilizing magnesium (Mg) ions have garnered significant attention. Numerous recent studies have focused on identifying suitable anode materials for post-lithium-ion batteries, particularly magnesium-ion batteries. In this context, we conducted a theoretical investigation using density functional theory (DFT) and ab initio molecular dynamics (AIMD) simulations to examine the 2D multiphase (1T/2H-MoS2) anode material. Our observations confirmed the efficacy of this material as an anode. The results highlight its exceptional stability, high binding energy, enhanced metallic characteristics following Mg adsorption, theoretical specific capacity, and remarkably low diffusion barriers. Notably, the anode material exhibits an ultralow energy barrier of 0.05 eV, surpassing that of extensively studied 2D materials. By employing a wide range of Mg2+ concentration during the charging process, we achieved a high specific capacity of 1339 mAh g− 1 ions, coupled with an average operating voltage of 0.13 V. These findings provide valuable insights for the experimental design of exceptional anode materials.

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Anchoring 1T/2H MoS₂ nanosheets on carbon nanofibers containing Si nanoparticles as a flexible anode for lithium–ion batteries

Abstract: Silicon-based (Si) materials have received exceptional attention as the most promising fall-back option for lithium-ion batteries (LIBs) due to their high specific capacity. Regrettably, the huge volume variation, inferior intrinsic...

Cited by 10 publications

References 55 publications

Biomimetics‐Inspired Architecture Enables the Strength–Toughness of Ultrahigh‐Loading Silicon Electrode

Biomimetics‐Inspired Architecture Enables the Strength–Toughness of Ultrahigh‐Loading Silicon Electrode

Carbon Layer and CoO Nanosheet Dual-Encapsulated SiO_x Particles for Ultra-High Specific Capacity Lithium-Ion Batteries

Multiphase MoS2 Monolayer: A Promising Anode Material for Mg-Ion Batteries

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Anchoring 1T/2H MoS2 nanosheets on carbon nanofibers containing Si nanoparticles as a flexible anode for lithium–ion batteries

Abstract: Silicon-based (Si) materials have received exceptional attention as the most promising fall-back option for lithium-ion batteries (LIBs) due to their high specific capacity. Regrettably, the huge volume variation, inferior intrinsic...

Cited by 10 publications

References 55 publications

Biomimetics‐Inspired Architecture Enables the Strength–Toughness of Ultrahigh‐Loading Silicon Electrode

Biomimetics‐Inspired Architecture Enables the Strength–Toughness of Ultrahigh‐Loading Silicon Electrode

Carbon Layer and CoO Nanosheet Dual-Encapsulated SiOx Particles for Ultra-High Specific Capacity Lithium-Ion Batteries

Multiphase MoS2 Monolayer: A Promising Anode Material for Mg-Ion Batteries

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Product

Resources

About

Anchoring 1T/2H MoS₂ nanosheets on carbon nanofibers containing Si nanoparticles as a flexible anode for lithium–ion batteries

Carbon Layer and CoO Nanosheet Dual-Encapsulated SiO_x Particles for Ultra-High Specific Capacity Lithium-Ion Batteries