Vulcanized polyisoprene-graft-maleic anhydride as an efficient binder for silicon anodes in lithium-ion batteries

Bolloju, Satish; Chang, Ya‐Sian; Sharma, Santosh U.; Hsu, Ming-Feng; Lee, Jyh-Tsung

doi:10.1016/j.electacta.2022.140390

Cited by 10 publications

(10 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A reduction peak appears at 0.1 V during the first scan in the CV performance of Si@CMSG, which was attributed to the formation of Li x Si. Correspondingly, an obvious oxidation peak was generated at 0.6 V, which was caused by the delithiation of Li x Si . Two reduction peaks at the positions of 0.7 and 1.1 V were ascribed to the formation of the SEI layer and the decomposition of the additive FEC in the electrolyte, which disappeared in the subsequent scans …”

Section: Resultsmentioning

confidence: 97%

Carboxymethyl Three-Dimensional Cross-Linked Biopolymer Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries

Cai

Shao

et al. 2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Dramatic volume changes of silicon anode materials lead to the pulverization and shedding of active materials, which hinders their further practical application. Silicon binders can greatly relieve the volumetric expansion issue and improve the cycle life. Herein, a natural three-dimensional cross-linked biopolymer gum, Sa-son seed gum (SG), is modified by carboxymethylation and applied to silicon anodes as a binder to implement long-term stable cycling. The modified Sa-son seed gum (CMSG) provides a strong interfacial binding force with silicon particles to adapt to the volume change due to their rich carboxyl and hydroxyl groups. Meanwhile, the introduction of the carboxymethyl group of the binder increases the water solubility resulting in a feasible process for a uniform electrode. The CMSG binder exhibits high mechanical strength and long-lasting interfacial adhesivity to stabilize the electrode integrity of silicon anodes. The Si@CMSG electrode shows a high initial Coulombic efficiency (ICE) of 89.67% and a reversible capacity of 2060 mAh/g after 240 cycles at a current density of 0.84 A/g. Furthermore, electrochemical impedance spectroscopy (EIS) indicates that the CMSG binder can effectively reduce interfacial impedance, increase the ion diffusion rate, and reduce electrode polarization.

show abstract

Section: Resultsmentioning

confidence: 97%

Carboxymethyl Three-Dimensional Cross-Linked Biopolymer Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries

Cai

Shao

et al. 2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…To explore the electrochemical performance of the PAA-Dex 9 binder, the CR2032 half-cells were assembled. Figure a shows the first three CV curves of the SiO x @PAA-Dex 9 electrode at a scan rate of 0.1 mV s –1 between 0.01 and 2.0 V. In the first CV curve, the cathodic peak at approximately 0.01 V can be attributed to the formation of the Li–Si alloy, corresponding to the first lithiation process, and the anodic peak at 0.54 V corresponds to the dealloying in the delithiation process. − In the second and third discharge process, the new peaks located at 0.15 and 0.13 V are ascribed to the generation of Li x Si between amorphous Si and Li + . During the second and third charge processes, two oxidation peaks at 0.38 and 0.52 V can be found in the delithiation process, corresponding to Li x Si and amorphous Si.…”

Section: Resultsmentioning

confidence: 99%

In Situ Prepared Three-Dimensional Covalent and Hydrogen Bond Synergistic Binder to Boost the Performance of SiO_x Anodes for Lithium-Ion Batteries

Long

Liao

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Polymer binders play an important role in enhancing the electrochemical performance of silicon-based anodes to alleviate the volume expansion for lithium-ion batteries. It is difficult for common one-dimensional (1D) linear binders to limit the volume expansion of a silicon-based electrode when combined with silicon-based particles with scant binding points. Therefore, it is necessary to design a three-dimensional (3D) network structure, which has multiple binding points with the silicon particles to dissipate the mechanical stress in the continuous charge and discharge circulation. Here, a covalent and hydrogen bond synergist 3D network green binder (poly(acrylic acid) (PAA)−dextrin 9 (Dex 9 )) was prepared by the simple in situ thermal condensation of a onedimensional liner binder PAA and Dex in the electrode fabrication process. The optimized SiO x @PAA-Dex 9 electrode exhibits an initial Coulombic efficiency (ICE) of 82.4% at a current density of 0.2 A g −1 . At a high current density of 1 A g −1 , it retains a capacity of 607 mAh g −1 after 300 cycles, which is approximately twice as high as that of the SiO x @PAA electrode. Furthermore, the results of in situ electrochemical dilatometry (ECD) and characterization of electrode structures demonstrate that the PAA-Dex 9 binder can effectively buffer the huge volume change and maintain the integrity of the SiO x electrodes. The research overcomes the low electrochemical stability difficulty of the 3D binder and sheds light on developing the simple fabrication procedure of an electrode.

show abstract

“…Nyquist plots of the cells after formation and after 200 cycles are shown in Figure . The high-frequency intercept is ascribed to the bulk electrolyte resistance of the electrodes ( R s ). , All the Nyquist plots after formation have one suppressed semicircle, which could be a combination of the two semicircles. The semicircle at high frequency could be ascribed to the SEI resistance ( R sei ) and the semicircle at medium frequency relates to the charge transfer resistance ( R ct ) .…”

Section: Resultsmentioning

confidence: 99%

Efficient Utilization of Macropores as Artificial Solid–Electrolyte Interphase Channels for High-Capacity Silicon/Graphite Anode Materials

Bolloju

Abdollahifar

Parthasarathi

et al. 2023

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Porous architectures for silicon/graphite (Si/Gr) composites can buffer the massive volume expansion of Si particles during electrochemical cycling. However, the large surface area derived from the high porosity leads to unavoidable side reactions at the electrode–electrolyte interface, leading to the formation of thick resistive natural solid–electrolyte interphase (SEI). Herein, a simple and scalable route is developed for coating a polymeric artificial SEI (A-SEI) inside the porous architecture for the Si/Gr composite via a facile incipient wetness impregnation (IWI) method. Cross-sectional focused ion beam microscopic results infer that the polymer coating is successful. Polymer coating for the porous matrix as A-SEI induces sufficient porosity as well as prevents excessive electrolyte penetration into the highly porous matrix. Furthermore, it prevents the direct contact of active materials with electrolytes, minimizing the parasitic reactions that form natural SEIs. Consequently, the polymer coating obtained by IWI enables remarkable enhancement in the long-cycle stability of the porous Si/Gr electrode, in contrast to the nonimpregnated electrode displaying capacity roll-over due to excessive SEI formation. Moreover, it is demonstrated that the coating effectively prevents the formation of dendritic lithium plating on the surface of the Si/Gr electrode, thereby enhancing the safety of the battery.

show abstract

Vulcanized polyisoprene-graft-maleic anhydride as an efficient binder for silicon anodes in lithium-ion batteries

Cited by 10 publications

References 55 publications

Carboxymethyl Three-Dimensional Cross-Linked Biopolymer Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries

Carboxymethyl Three-Dimensional Cross-Linked Biopolymer Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries

In Situ Prepared Three-Dimensional Covalent and Hydrogen Bond Synergistic Binder to Boost the Performance of SiO_x Anodes for Lithium-Ion Batteries

Efficient Utilization of Macropores as Artificial Solid–Electrolyte Interphase Channels for High-Capacity Silicon/Graphite Anode Materials

Contact Info

Product

Resources

About

Vulcanized polyisoprene-graft-maleic anhydride as an efficient binder for silicon anodes in lithium-ion batteries

Cited by 10 publications

References 55 publications

Carboxymethyl Three-Dimensional Cross-Linked Biopolymer Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries

Carboxymethyl Three-Dimensional Cross-Linked Biopolymer Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries

In Situ Prepared Three-Dimensional Covalent and Hydrogen Bond Synergistic Binder to Boost the Performance of SiOx Anodes for Lithium-Ion Batteries

Efficient Utilization of Macropores as Artificial Solid–Electrolyte Interphase Channels for High-Capacity Silicon/Graphite Anode Materials

Contact Info

Product

Resources

About

In Situ Prepared Three-Dimensional Covalent and Hydrogen Bond Synergistic Binder to Boost the Performance of SiO_x Anodes for Lithium-Ion Batteries