3D Network Binder via In Situ Cross‐Linking on Silicon Anodes with Improved Stability for Lithium‐Ion Batteries

Li, Pengcheng; Chen, Gen; Lin, Yifan; Chen, Fashen; Chen, Long; Zhang, Ning; Cao, Yijun; Ma, Renzhi; Liu, Xiaohe

doi:10.1002/macp.201900414

Cited by 30 publications

(32 citation statements)

References 48 publications

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“… 138 The glycerol crosslinked PEDOT: PSS (GP) binder showed greatly enhanced peeling force and superior conductivity, leading to improved cycling and rate performances (1951.5 mA h g −1 after 200 cycles at 0.5 A g −1 and 804 mA h g −1 at a high current of 8.0 A g −1 ) of SiNP anodes containing no conductive additive. Maleic anhydride crosslinked corn starch 139 or CMC 140 binders have been demonstrated to be promising binders for the Si‐based anodes (Figure 12B). Besides, Song et al employed the inorganic sodium borate to crosslink CMC, making the obtained binder with strong ability to buffer the volume change of Si particles and maintain the integrity of overall electrode (Figure 12C).…”

Section: Designing Of Polymer Binders For Si‐based Anodesmentioning

confidence: 99%

“…Other esterification reaction between -OH and sulfonic acid, 138 anhydride, 139,140 or boronic acid 141,142 groups can also be employed to fabricate the covalently crosslinked polymer binders for Si-based anodes. Qian et al reported an crosslinked conductive binder for SiNP anodes by thermally crosslinking PEDOT: PSS and glycerol at 180 C (Figure 12A).…”

Section: Covalently Crosslinked Polymer Bindersmentioning

confidence: 99%

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Advances of polymer binders for silicon‐based anodes in high energy density lithium‐ion batteries

Zhao

Yue²,

Li³

et al. 2021

InfoMat

221

151

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Conventional lithium‐ion batteries (LIBs) with graphite anodes are approaching their theoretical limitations in energy density. Replacing the conventional graphite anodes with high‐capacity Si‐based anodes represents one of the most promising strategies to greatly boost the energy density of LIBs. However, the inherent huge volume expansion of Si‐based materials after lithiation and the resulting series of intractable problems, such as unstable solid electrolyte interphase layer, cracking of electrode, and especially the rapid capacity degradation of cells, severely restrict the practical application of Si‐based anodes. Over the past decade, numerous reports have demonstrated that polymer binders play a critical role in alleviating the volume expansion and maintaining the integrity and stable cycling of Si‐based anodes. In this review, the state‐of‐the‐art designing of polymer binders for Si‐based anodes have been systematically summarized based on their structures, including the linear, branched, crosslinked, and conjugated conductive polymer binders. Especially, the comprehensive designing of multifunctional polymer binders, by a combination of multiple structures, interactions, crosslinking chemistries, ionic or electronic conductivities, soft and hard segments, and so forth, would be promising to promote the practical application of Si‐based anodes. Finally, a perspective on the rational design of practical polymer binders for the large‐scale application of Si‐based anodes is presented.

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Section: Designing Of Polymer Binders For Si‐based Anodesmentioning

confidence: 99%

Section: Covalently Crosslinked Polymer Bindersmentioning

confidence: 99%

Advances of polymer binders for silicon‐based anodes in high energy density lithium‐ion batteries

Zhao

Yue²,

Li³

et al. 2021

InfoMat

221

151

View full text Add to dashboard Cite

show abstract

“…Besides, the binder plays a crucial role in high‐capacity alloy‐typed anodes. [ 20‐23 ] And there have been excellent cases through optimizing the binders in achieving high electrochemical performance Si anodes, [ 24 ] such as cross‐linking network polymer, [ 25‐27 ] self‐healing binders, [ 28‐30 ] and conductive binders. [ 31,32 ] Moreover, it is accepted that the SEI layer is formed on the surface of anode electrode under low potential due to electrolyte decomposition during the initial cycles.…”

Section: Introductionmentioning

confidence: 99%

β‐cyclodextrin as Lithium‐ion Diffusion Channel with Enhanced Kinetics for Stable Silicon Anode

Chen

Zhang

et al. 2020

Energy & Environ Materials

Self Cite

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Silicon (Si) is regarded as a promising anode material for next‐generation lithium‐ion batteries due to its ultrahigh theoretical capacity. However, the drastic volume change and the continuous solid electrolyte interphase (SEI) formation during the lithiation/delithiation process seriously hinder its practical application as commercial anodes. Herein, macrocyclic beta‐cyclodextrin (β‐CD) has been designed as the diffusion channel for lithium ions at the molecular scale. The diameter of molecular channel is approximately comparable with the solvated lithium ions, which enables the transport of lithium ions and prevents the penetration of solvent molecules. Moreover, the addition of β‐CD changes the formation behavior of SEI layer and stabilizes the Si nanoparticles. The enhanced electrochemical performances in terms of fast kinetics and improved stability have been achieved. The Si anode with the particularly selected lithium‐ion diffusion channel and stabilized SEI layer exhibits a high reversible capability of 2 562 mAh g−1 after 50 cycles at the current density of 500 mA g−1, 1 944 mAh g−1 after 200 cycles at the current density of 1 A g−1, and high rate performance. The novel strategy of molecular channel for lithium‐ion diffusion offers new insights into the design of alloy‐typed anode electrodes with high capacity for lithium‐ion batteries.

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“…The Fourier‐transform infrared (FTIR) spectra of all the MP−Si@C composites in the 400–4000 cm −1 wavenumber range are presented in Figure 1(d). Moreover, the characteristic absorption peaks for the vibration of the Si−Si and Si−O−Si bonds at 451 and at 1053 cm −1 , respectively, and the absorption bands corresponding to the vibration of the C−H, C=C, and C−C bonds were observed in the FTIR spectra of the MP−Si@C composites in the wavenumber range of 1100–2200 cm −1 [33,34] …”

Section: Resultsmentioning

confidence: 94%

Facile Fabrication of Highly Porous 3D Sponge‐Like Si@C Composites as High‐Performance Anode Materials for Lithium‐Ion Batteries

Min

Nazir

et al. 2022

Batteries & Supercaps

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In this work, we synthesized highly porous 3D sponge‐like mesoporous (MP)‐Si@C composites using mass‐scalable method. The optimized MP−Si@C 1 composite electrode, provided a reversible capacity of 1887 mAh g−1 after 100 discharge−charge cycles with capacity retention of 83 % at the rate of 0.1 C. At high C‐rate the MP−Si@C 1 anode provided reversible capacity of 910 mAh g−1 after 1000 cycles. The MP−Si@C 1/LCO full cell provide a discharge capacity of 1515 mAh g−1 and it works well for 100 cycles. This outstanding electrochemical behavior of the MP−Si@C 1 composite electrode was accredited to the exclusive structure of interconnected Si nanoparticles and the presence of the outer C thin layer. The carbon layer served as a shield, an effective buffer layer to house the extreme volume expansion issue of Si during continuous cycling. The excellent performance of the MP−Si@C 1 composite demonstrated its high applicability as potential anode material for next‐generation LIBs.

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3D Network Binder via In Situ Cross‐Linking on Silicon Anodes with Improved Stability for Lithium‐Ion Batteries

Cited by 30 publications

References 48 publications

Advances of polymer binders for silicon‐based anodes in high energy density lithium‐ion batteries

Advances of polymer binders for silicon‐based anodes in high energy density lithium‐ion batteries

β‐cyclodextrin as Lithium‐ion Diffusion Channel with Enhanced Kinetics for Stable Silicon Anode

Facile Fabrication of Highly Porous 3D Sponge‐Like Si@C Composites as High‐Performance Anode Materials for Lithium‐Ion Batteries

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