Free-standing and flexible CNT/(Fe@Si@SiO2) composite anodes with kernel-pulp-skin nanostructure for high-performance lithium-ion batteries

Zhang, Ming; Li, Lianghan; Jian, Xianlong; Zhang, Sen; Shang, Yuanyuan; Xu, Tingting; Dai, Shuge; Xu, Junmin; Kong, Dezhi; Wang, Ye; Wang, Xinchang

doi:10.1016/j.jallcom.2021.160396

Cited by 31 publications

(14 citation statements)

References 34 publications

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“…The discharge capacity of the composite retains 783.17 mA h·g –1 after 80 cycles at 0.05 A·g –1 . CNTs as a promising support material exhibit good chemical stability and excellent electrical conductivity . However, the problems of poor compatibility and weak adhesion between CNTs and TMS nanoparticles require further improvement to form uniformly distributed and stable composites.…”

Section: Introductionmentioning

confidence: 99%

“…CNTs as a promising support material exhibit good chemical stability and excellent electrical conductivity. 38 However, the problems of poor compatibility and weak adhesion between CNTs and TMS nanoparticles require further improvement to form uniformly distributed and stable composites. Therefore, polydopamine (PDA) was introduced by in situ polymerization on CNTs to form CNTs@PDA composites through the good adhesion of PDA.…”

Section: Introductionmentioning

confidence: 99%

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Amorphous CoMoS₄ Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

et al. 2022

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It is necessary to design an anode material for lithium-ion batteries (LIBs) with good lithium storage capacity. In the present work, the CNTs@PDA/CoMoS4 composite materials were prepared through self-polymerization of dopamine (PDA) and coating on carbon nanotubes and then deposition of CoMoS4 by a hydrothermal method. Benefited from the formation of the coordination bond between the hydroxyl groups of PDA and the metal ions of CoMoS4, the combination between the CNTs@PDA matrix and CoMoS4 nanoparticles is effectively enhanced. As a result, CoMoS4 nanoparticles grow uniformly on the surface of CNTs@PDA, which reduces the diffusion length of Li+ and improves the electronic transmission efficiency. The CNTs@PDA/CoMoS4 as an anode material exhibits outstanding electrochemical properties in terms of a high capacity of 1025.2 mA h·g–1 after 100 cycles at 0.1 A·g–1. Meanwhile, its capacity is 490.3 mA h·g–1 after 200 cycles at 1 A·g–1. The desirable electrochemical properties combined with the stable structure and the facile synthesis route make CNTs@PDA/CoMoS4 composites a potential candidate for high-performance LIBs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Amorphous CoMoS₄ Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

et al. 2022

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“…In addition, synthetic silicon carbon anode composite materials can effectively inhibit the volume expansion of silicon and the formation of a continuous SEI . Meanwhile, carbon additives can also improve the conductivity of the silicon anode materials. ,, One of the most common methods is to employ porous nanoparticles of silicon or amorphous silicon as the base materials and using carbon as the coating layer. ,− Besides, metals and metal oxides can provide abundant lithium-ion transport channels due to their excellent conductivity, which facilitates the transfer of electrons or ions, such as Fe–Cu–Si, Ni–Si, Cu–Si, Ti–Si, Fe–Si, and TiO 2 –Si, − which have attracted much attention. These metal and metal oxides promote the transport of electrons and ions while suppressing the volume expansion of silicon effectively.…”

Section: Introductionmentioning

confidence: 99%

“…4,9,19 One of the most common methods is to employ porous nanoparticles of silicon or amorphous silicon as the base materials and using carbon as the coating layer. 4,20−24 Besides, metals and metal oxides can provide abundant lithium-ion transport channels due to their excellent conductivity, which facilitates the transfer of electrons or ions, 25 such as Fe−Cu− Si, 26 Ni−Si, 27 Cu−Si, 28 Ti−Si, 29 Fe−Si, 30 and TiO 2 −Si, 31−33 which have attracted much attention. These metal and metal oxides promote the transport of electrons and ions while suppressing the volume expansion of silicon effectively.…”

Section: Introductionmentioning

confidence: 99%

Si@C/TiO₂@C/Hollow-C Nanocomposite as a Lithium-Ion Battery Anode Produced by Refining Silicon and Ti–6Al–4V Residuals

Chen

Lin

et al. 2021

ACS Appl. Energy Mater.

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TC4 (Ti–6Al–4V) nanoparticles (TC4NPs) and silicon nanoparticles (SiNPs) with a median size of 146 and 51 nm were prepared by sand milling from scrap produced by refining silicon and TC4. The SiNPs and TC4NPs are mixed, carbonized, and leached in different proportions to obtain Si@C/TiO2@C/Hollow-C anode materials. The special structure of the anode materials provided more space for the volume expansion of silicon. The anatase TiO2 in TC4NPs relieves the volume expansion and reduces the transfer impedance, and the lithiated TiO2 can promote the electrical conductivity of the Si@C/TiO2@C/Hollow-C anode during the charge/discharge process. Furthermore, the Si@C/TiO2@C/Hollow-C (SiNPs/TC4NPs = 2:1) electrode delivers excellent rate performance; after cycling at a series of higher current densities, 92% of the original level of the reversible capacity can be maintained. The Si@C/TiO2@C/Hollow-C (SiNPs/TC4NPs = 2:1) anode retains 558 mA h·g–1 after 400 cycles with a large current density of 1000 mA·g–1. The synthesis method of the Si@C/TiO2@C/Hollow-C anode is a low-cost, facile, and nontoxic process, endowing it with the potential for application as energy materials for mass production.

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“…A lot of efforts were directed to the development of more advanced batteries. For example, different approaches for LIB's development were used, such as nanostructured materials [1][2][3][4][5][6][7][8][9][10][11][12][13], the growth of the capacity and voltage of cathode materials [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], hollow and porous and structures [13,[31][32][33][34][35][36][37][38][39][40][41][42][43][44], safety issues, including separator and liquid electrolyte studies [45][46][47][48]…”

Section: Introductionmentioning

confidence: 99%

Synthesis Method and Thermodynamic Characteristics of Anode Material Li3FeN2 for Application in Lithium-Ion Batteries

Popovich

Новиков

Wang³

et al. 2021

Materials

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Li3FeN2 material was synthesized by the two-step solid-state method from Li3N (adiabatic camera) and FeN2 (tube furnace) powders. Phase investigation of Li3N, FeN2, and Li3FeN2 was carried out. The discharge capacity of Li3FeN2 is 343 mAh g−1, which is about 44.7% of the theoretic capacity. The ternary nitride Li3FeN2 molar heat capacity is calculated using the formula Cp,m = 77.831 + 0.130 × T − 6289 × T−2, (T is absolute temperature, temperature range is 298–900 K, pressure is constant). The thermodynamic characteristics of Li3FeN2 have the following values: entropy S0298 = 116.2 J mol−1 K−1, molar enthalpy of dissolution ΔdHLFN = −206.537 ± 2.8 kJ mol−1, the standard enthalpy of formation ΔfH0 = −291.331 ± 5.7 kJ mol−1, entropy S0298 = 113.2 J mol−1 K−1 (Neumann–Kopp rule) and 116.2 J mol−1 K−1 (W. Herz rule), the standard Gibbs free energy of formation ΔfG0298 = −276.7 kJ mol−1.

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Free-standing and flexible CNT/(Fe@Si@SiO2) composite anodes with kernel-pulp-skin nanostructure for high-performance lithium-ion batteries

Cited by 31 publications

References 34 publications

Amorphous CoMoS₄ Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

Amorphous CoMoS₄ Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

Si@C/TiO₂@C/Hollow-C Nanocomposite as a Lithium-Ion Battery Anode Produced by Refining Silicon and Ti–6Al–4V Residuals

Synthesis Method and Thermodynamic Characteristics of Anode Material Li3FeN2 for Application in Lithium-Ion Batteries

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Free-standing and flexible CNT/(Fe@Si@SiO2) composite anodes with kernel-pulp-skin nanostructure for high-performance lithium-ion batteries

Cited by 31 publications

References 34 publications

Amorphous CoMoS4 Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

Amorphous CoMoS4 Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

Si@C/TiO2@C/Hollow-C Nanocomposite as a Lithium-Ion Battery Anode Produced by Refining Silicon and Ti–6Al–4V Residuals

Synthesis Method and Thermodynamic Characteristics of Anode Material Li3FeN2 for Application in Lithium-Ion Batteries

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Amorphous CoMoS₄ Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

Amorphous CoMoS₄ Nanoparticles Attached to CNTs@PDA as High-Performance Anode Materials for Lithium-Ion Batteries

Si@C/TiO₂@C/Hollow-C Nanocomposite as a Lithium-Ion Battery Anode Produced by Refining Silicon and Ti–6Al–4V Residuals