Facile synthesis of polynorbornene-based binder through ROMP for silicon anode in lithium-ion batteries

Preman, Anjali N.; Lim, Ye Eun; Lee, Seungjae; Kim, Seokjun; Kim, Il Tae; Ahn, Suk‐kyun

doi:10.1007/s11814-023-1428-9

Cited by 3 publications

(2 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The electrochemical properties of the Si electrodes containing 15 wt % of the binders were investigated via galvanostatic cycling studies in a half-cell; the results are shown in Figure and Table S2. An electrolyte solution containing FEC (10%) was used to promote the formation of a stable SEI layer. − All samples were initially evaluated at an active material loading of ∼0.5 mg cm –2 . The initial Coulombic efficiency (ICE) of the Si electrode depends strongly on the molar composition of the binder, and the use of copolymers containing higher UR contents leads to lower ICEs (Figure a,b).…”

Section: Resultsmentioning

confidence: 99%

Self-Healable Poly(Acrylic Acid) Binder toward Optimized Electrochemical Performance for Silicon Anodes: Importance of Balanced Properties

Preman,

Vo,

Choi

et al. 2023

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

Si is a promising anode for high-energy lithium-ion batteries, but its severe capacity decay due to volume changes remains a challenge. To address this, we synthesized a series of acrylic copolymer binders with randomly distributed carboxylic acid (CA) and n-butyl carbamate (BC) groups. CA groups ensure good adhesion to the Si surface, while BC groups provide self-healing as well as a wide range of thermal and mechanical properties. By fine-tuning the content of these functional groups, we optimize the mechanical, adhesion, and self-healing properties, and electrolyte uptake of the binders to maximize their electrochemical performance. The Si electrode with a binder containing 68 mol % CA groups and 32 mol % BC groups achieves a high initial discharge capacity of 3628 mA h g −1 , with an initial Coulombic efficiency (ICE) of 84%. This electrode also displays a discharge capacity of 2334 mA h g −1 after 100 cycles at 0.5 A g −1 , surpassing the performance of a Si-poly(acrylic acid) electrode (3171 mA h g −1 at the first cycle, ICE of 86%, and 1367 mA h g −1 at the 100th cycle at 0.5 A g −1 ). Through a systematic investigation of the structure−property−electrochemical performance relationship, we prioritize the desired properties of the binder to enable the development of high-performance Si anodes.

show abstract

Section: Resultsmentioning

confidence: 99%

Self-Healable Poly(Acrylic Acid) Binder toward Optimized Electrochemical Performance for Silicon Anodes: Importance of Balanced Properties

Preman,

Vo,

Choi

et al. 2023

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In electrode slurries, polymers play a role not only as a binder modifying the coating characteristics of the slurries and enhancing the mechanical integrity of the electrodes, but also as a dispersant influencing the structure and dispersion state of particles through their interactions [15][16][17][18] . Since the structure of the electrode slurries significantly impacts the microstructure and characteristics of dried electrodes, it becomes imperative to gain a clear understanding of the role of polymers as a dispersant.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Molecular Weight of Carboxymethyl Cellulose on the Dispersion of Silicon Suspensions Investigated by the Ultrasonic Degradation Method

Kim,

Ahn

2024

J. Soc. Rheol., Jpn

View full text Add to dashboard Cite

This study investigates the influence of the molecular weight of carboxymethyl cellulose (CMC) on the dispersion characteristics of silicon (Si) particles in Si/CMC model suspensions. The chain length of CMC is systematically adjusted, ranging from approximately 77 kDa to 281 kDa using the ultrasonic degradation method and characterized through the Mark-Houwink relation and gel permeation chromatography. Our findings confirm that decreasing CMC chain length enhances the dispersion of silicon particles by suppressing bridging flocculation, leading to a rapid reduction in the size of silicon agglomerates. The critical molecular weight required to disperse silicon particles with their primary size is found to be 190 kDa. This study highlights the benefits of utilizing low-molecular-weight CMC as a dispersant to effectively improve the dispersion of Si/CMC suspensions. Through a systematic exploration of the agglomeration behavior of silicon particles with varying molecular weight of CMC, valuable insights are provided regarding the optimal molecular weight necessary to mitigate severe agglomeration of silicon particles. We anticipate that this study contributes to the optimization and design of dispersants, thereby enhancing both the dispersion quality and the performance of silicon-containing electrodes.

show abstract

Better together: integrating adhesion and ion conductivity in composite binders for high-performance silicon anodes

Preman,

Aswale,

Salunkhe

et al. 2025

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Facile synthesis of polynorbornene-based binder through ROMP for silicon anode in lithium-ion batteries

Cited by 3 publications

References 59 publications

Self-Healable Poly(Acrylic Acid) Binder toward Optimized Electrochemical Performance for Silicon Anodes: Importance of Balanced Properties

Self-Healable Poly(Acrylic Acid) Binder toward Optimized Electrochemical Performance for Silicon Anodes: Importance of Balanced Properties

The Effect of Molecular Weight of Carboxymethyl Cellulose on the Dispersion of Silicon Suspensions Investigated by the Ultrasonic Degradation Method

Better together: integrating adhesion and ion conductivity in composite binders for high-performance silicon anodes

Contact Info

Product

Resources

About