A mechanically robust self-healing binder for silicon anode in lithium ion batteries

Chen, Hao; Wu, Zhenzhen; Su, Zhong; Chen, Su; Chen, Yan; Al‐Mamun, Mohammad; Tang, Yongbing; Zhang, Shanqing

doi:10.1016/j.nanoen.2020.105654

Cited by 186 publications

(145 citation statements)

References 31 publications

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“…Moreover, the high Young's modulus of SPEs can stabilize the solid electrolyte interphase (SEI) layer during cycling. (3) The safety concerns can also be eliminated as there is no leakage in SPEs. As the major challenge for SPEs is ionic conductivity, considerable efforts have continuously been made toward solving this issue.…”

Section: Lithium-sulfur Batteriesmentioning

confidence: 99%

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

et al. 2021

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Solid polymer electrolytes (SPEs) have become increasingly attractive in solidstate lithium-ion batteries (SSLIBs) in recent years because of their inherent properties of flexibility, processability, and interfacial compatibility. However, the commercialization of SPEs remains challenging for flexible and highenergy-density LIBs. The incorporation of functional additives into SPEs could significantly improve the electrochemical and mechanical properties of SPEs and has created some historical milestones in boosting the development of SPEs. In this study, we review the roles of additives in SPEs, highlighting the working mechanisms and functionalities of the additives. The additives could afford significant advantages in boosting ionic conductivity, increasing ion transference number, improving high-voltage stability, enhancing mechanical strength, inhibiting lithium dendrite, and reducing flammability. Moreover, the application of functional additives in high-voltage cathodes, lithium-sulfur batteries, and flexible lithium-ion batteries is summarized. Finally, future research perspectives are proposed to overcome the unresolved technical hurdles and critical issues in additives of SPEs, such as facile fabrication process, interfacial compatibility, investigation of the working mechanism, and special functionalities.

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Section: Lithium-sulfur Batteriesmentioning

confidence: 99%

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

et al. 2021

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“…For superior self-healing, self-healing binders are reported in recent years ( Xu et al, 2018 ; Zhang et al, 2018 ; Chen et al, 2021 ). Zhang et al prepared a quadruple hydrogen-bonded supramolecular binder PAA-UPy through covalently integrating a small amount of ureido-pyrimidinone (UPy) moieties with PAA ( Zhang et al, 2018 ).…”

Section: Binders In Si-based Anodesmentioning

confidence: 99%

Progress of Binder Structures in Silicon-Based Anodes for Advanced Lithium-Ion Batteries: A Mini Review

et al. 2021

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Silicon (Si) has been counted as the most promising anode material for next-generation lithium-ion batteries, owing to its high theoretical specific capacity, safety, and high natural abundance. However, the commercial application of silicon anodes is hindered by its huge volume expansions, poor conductivity, and low coulombic efficiency. For the anode manufacture, binders play an important role of binding silicon materials, current collectors, and conductive agents, and the binder structure can significantly affect the mechanical durability, adhesion, ionic/electronic conductivities, and solid electrolyte interface (SEI) stability of the silicon anodes. Moreover, many cross-linked binders are effective in alleviating the volume expansions of silicon nanosized even microsized anodic materials along with maintaining the anode integrity and stable electrochemical performances. This mini review comprehensively summarizes various binders based on their structures, including the linear, branched, three-dimensional (3D) cross-linked, conductive polymer, and other hybrid binders. The mechanisms how various binder structures influence the performances of the silicon anodes, the limitations, and prospects of different hybrid binders are also discussed. This mini review can help in designing hybrid polymer binders and facilitating the practical application of silicon-based anodes with high electrochemical activity and long-term stability.

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“…Generally, binders only occupy a small mass percentage of the composite electrodes, and therefore, the engineering of these polymer components is a cost-efficient approach to improve the performance of the active materials, including Si anodes materials [15][16][17][18]. In particular, the binders in Si electrodes play a crucial role as binders can accommodate the dramatic volume change of silicon active materials [19].…”

Section: Introductionmentioning

confidence: 99%

Organic Solvent Free Process to Fabricate High Performance Silicon/Graphite Composite Anode

et al. 2021

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Cycling stability is a key challenge for application of silicon (Si)-based composite anodes as the severe volume fluctuation of Si readily leads to fast capacity fading. The binder is a crucial component of the composite electrodes. Although only occupying a small amount of the total composite mass, the binder has major impact on the long-term electrochemical performance of Si-based anodes. In recent years, water-based binders including styrene-butadiene rubber (SBR) and carboxymethyl cellulose (CMC) have attracted wide research interest as eco-friendly and low-cost alternatives for the conventional poly(vinylidene difluoride) (PVDF) binder in Si anodes. In this study, Si-based composite anodes are fabricated by simple solid mixing of the active materials with subsequent addition of SBR and CMC binders. This approach bypasses the use of toxic and expansive organic solvents. The factors of binder, silicon, and graphite materials have been systematically investigated. It is found that the retained capacities of the anodes are more than 440 mAh/g after 400 cycles. These results indicate that organic solvent free process is a facile strategy for producing high performance silicon/graphite composite anodes.

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A mechanically robust self-healing binder for silicon anode in lithium ion batteries

Cited by 186 publications

References 31 publications

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

Progress of Binder Structures in Silicon-Based Anodes for Advanced Lithium-Ion Batteries: A Mini Review

Organic Solvent Free Process to Fabricate High Performance Silicon/Graphite Composite Anode

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