Facile, Water-Based, Direct–Deposit Fabrication of Hybrid Silicon Assemblies for Scalable and High–Performance Li–ion Battery Anodes

Shoorideh, Ghazal; Kim, Yong Seok; Joo, Yong Lak

doi:10.1016/j.electacta.2016.11.062

Cited by 5 publications

(2 citation statements)

References 59 publications

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“…More information about process and morphology of directly deposited fibers can be found in our previous work. 46 To the best of our knowledge, this is the first time that electrochemical performances of GNRs and their parent CNTs are compared in conjunction with that of silicon, without the addition of any carbon black in the system.…”

Section: Introductionmentioning

confidence: 98%

Harvesting Interconductivity and Intraconductivity of Graphene Nanoribbons for a Directly Deposited, High-Rate Silicon-Based Anode for Li-Ion Batteries

Shoorideh

Berry

et al. 2018

ACS Appl. Energy Mater.

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Batteries for high-rate applications such as electric vehicles need to be efficient at mobilizing charges (both electrons and ions). To this end, choice of the conductive carbon in the electrode can make a significant difference in the performance of the electrode. In this work, graphene nanoribbons (GNRs) are explored as conductive pathways for a silicon-based anode. Water-based electrospinning is employed to directly deposit poly(vinyl alcohol) (PVA)−silicon−graphene nanoribbon composite fibers on a copper current collector. The size of the employed GNRs dictates their placement: either inside each fiber (small GNRs) or as a bridge between multiple fibers (large GNRs). Galvanostatic charge/discharge cycles reveal that fibers with GNRs have higher capacity and overall retention compared to those with corresponding precursor carbon nanotubes (CNTs). To further distinguish the effectiveness of GNRs as the conductive agent, samples with two GNRs and their parent CNTs were subject to rate-capability tests. Fibers with large GNR inclusions exhibit an excellent performance at fast rates (1400 mAh g −1 at 12.6 A g −1 ). For both pairs, enhancement in the performance of GNRs over CNTs grows with increasing rates. Finally, a small amount of large GNRs (1 wt %) is blended with small GNRs in the fibers to create synergy between intra-and interconductivity provided by small and large GNRs, respectively. The resulting fiber mat exhibits the same capacity as that of only small GNRs, even at a current rate that is 4 times higher (300 mAh g −1 at 21 A g −1 ).

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Section: Introductionmentioning

confidence: 98%

Harvesting Interconductivity and Intraconductivity of Graphene Nanoribbons for a Directly Deposited, High-Rate Silicon-Based Anode for Li-Ion Batteries

Shoorideh

Berry

et al. 2018

ACS Appl. Energy Mater.

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“…Gas-assisted electrospinning (Figure 1) provides a highly tuneable platform to fabricate sub-micron fibers from solution by synergistically combining an electric field and high-speed air. [58][59][60][61][62] In this work, we report the development of micron-scale composite polyacrylonitrile(PAN)/ceramic/NIPEI electrospun fibers capable of demonstrating excellent water rejection, enhanced CO 2 capture capacity, and fast absorption kinetics. While there are examples in the literature [63][64][65][66][67][68][69][70] of electrospun fibers for CO 2 capture, including some using amine-based sorbents as the capture agent, our unique incorporation of hydrophobic ceramic materials for enhanced water rejection addresses both of these issues simultaneously via encapsulation of an effective amine-based sorbent material within highly hydrophobic electrospun polymer-ceramic hybrid fibers.…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of Nanoparticle Organic Hybrid Materials within Electrospun Hydrophobic Polymer/Ceramic Fibers for Enhanced CO₂ Capture

Kersey

Lee

et al. 2023

Adv Funct Materials

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Liquid‐like nanoparticle organic hybrid materials (NOHMs) consisting of a silica core with ionically grafted branched polyethyleneimine chains (referred to as NIPEI) are encapsulated within submicron‐scale polyacrylonitrile (PAN)/polymer‐derived‐ceramic electrospun fibers. The addition of a room‐temperature curable, liquid‐phase organopolysilazane (OPSZ) ceramic precursor to the PAN/NOHM solution enhances the internal dispersion of NOHMs and forms a thin ceramic sheath layer on the fiber exterior, shielding the hydrophilic NIPEI to produce near‐superhydrophobic non‐woven fiber mats with contact angles exceeding 140°. 60:40 loadings of NOHMs to PAN/OPSZ can be reliably achieved with low OPSZ percentages required, and up to 4:1 NOHM:polymer loadings are possible before losing hydrophobicity. These fibers demonstrate up to ≈2 mmol CO2 g−1 fiber capture capacities in a pure CO2 atmosphere through the nonwoven fibrous networks and the permeability of the OPSZ shell. The hybrid fibers additionally show enhanced capture kinetics under pure CO2 and 400 ppm CO2 conditions, indicating their promising application as a direct air capture platform.

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Tailoring the structure of silicon-based materials for lithium-ion batteries via electrospinning technology

et al. 2021

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Facile, Water-Based, Direct–Deposit Fabrication of Hybrid Silicon Assemblies for Scalable and High–Performance Li–ion Battery Anodes

Cited by 5 publications

References 59 publications

Harvesting Interconductivity and Intraconductivity of Graphene Nanoribbons for a Directly Deposited, High-Rate Silicon-Based Anode for Li-Ion Batteries

Harvesting Interconductivity and Intraconductivity of Graphene Nanoribbons for a Directly Deposited, High-Rate Silicon-Based Anode for Li-Ion Batteries

Encapsulation of Nanoparticle Organic Hybrid Materials within Electrospun Hydrophobic Polymer/Ceramic Fibers for Enhanced CO₂ Capture

Tailoring the structure of silicon-based materials for lithium-ion batteries via electrospinning technology

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Facile, Water-Based, Direct–Deposit Fabrication of Hybrid Silicon Assemblies for Scalable and High–Performance Li–ion Battery Anodes

Cited by 5 publications

References 59 publications

Harvesting Interconductivity and Intraconductivity of Graphene Nanoribbons for a Directly Deposited, High-Rate Silicon-Based Anode for Li-Ion Batteries

Harvesting Interconductivity and Intraconductivity of Graphene Nanoribbons for a Directly Deposited, High-Rate Silicon-Based Anode for Li-Ion Batteries

Encapsulation of Nanoparticle Organic Hybrid Materials within Electrospun Hydrophobic Polymer/Ceramic Fibers for Enhanced CO2 Capture

Tailoring the structure of silicon-based materials for lithium-ion batteries via electrospinning technology

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Encapsulation of Nanoparticle Organic Hybrid Materials within Electrospun Hydrophobic Polymer/Ceramic Fibers for Enhanced CO₂ Capture