Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode

He, Jiarong; Zhang, Lingzhi

doi:10.1016/j.jallcom.2018.05.286

Cited by 102 publications

(60 citation statements)

References 35 publications

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“…Besides, a series of PAA‐based polymer binders have been developed for Si‐based anodes through polymerization, 85‐88 blending 89‐96 and post‐modification 64,97,98 methods. Deng et al designed a water‐soluble triblock copolymer polydopamine‐polyacrylic‐polyethylene oxide (PDA‐PAA‐PEO) binder for Si anodes via reversible addition fragmentation chain transfer (RAFT) polymerization and a coupling reaction (Figure 6A).…”

Section: Designing Of Polymer Binders For Si‐based Anodesmentioning

confidence: 99%

“…Oh et al first studied the high M w PVA as a potential binder for Si/Gr anodes 99 . In fact, the employing of PVA as binder for Si‐based anodes often involves a branching, 85,100 crosslinking 93,94,101‐103 and modification 104,105 designing, which will be discussed in the following sections. The –COOH and –OH groups are the most important functional groups in many polymer binders for Si‐based anodes.…”

Section: Designing Of Polymer Binders For Si‐based Anodesmentioning

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: Designing Of Polymer Binders For Si‐based Anodesmentioning

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

“…The plots can be divided into three parts: a straight line in low frequencies, which corresponds to Li + diffusion in electrode bulk, and two depressed semicircles in medium and high frequencies which represent the charge transfer resistance ( R ct ) and the solid interfacial resistance ( R SEI ), respectively. [ 43 ] In the 3rd cycle, the 4A‐PAA electrode exhibits smaller R SEI and R ct values (3.2 ± 0.4 and 33.6 ± 1.0 Ω, respectively) compared to those of the PAA electrode (4.0 ± 0.4 and 49.9 ± 1.5 Ω, respectively), indicating the more favorable interfacial property, better uniform distributions, and preferable kinetics of the electrode reactions in the 4A‐PAA electrode. The results also mean that less SEI is formed, and an improved conductive network is acquired by adopting the 4A‐PAA binder to mitigate the volume expansion of the SiO x /graphite during cycling.…”

Section: Resultsmentioning

confidence: 99%

A Four‐Armed Polyacrylic Acid Homopolymer Binder with Enhanced Performance for SiO_x/Graphite Anode

Luo

Zhang

et al. 2020

Macro Materials & Eng

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The large‐scale application of Si‐based anodes is impeded by their fast capacity decay, which is mainly attributed to the huge volume expansion upon cycling. The employment of functional binders is one efficient method to mitigate this issue. In this work, a four‐armed polyacrylic acid (4A‐PAA) homopolymer is explored as a remarkably effective binder for Si‐based anodes. The 4A‐PAA binder is prepared via an atom transfer radical polymerization, followed by ester hydrolysis. Compared to the conventional linear polyacrylic acid (PAA) binder, the 4A‐PAA not only shows enhanced toughness due to its decreased molecular regularity and intramolecular hydrogen bond but also exhibits increased binding strength because of its multidimensional binding structure. As a result, the SiOx/graphite electrode using the 4A‐PAA retains a capacity retention of 89.1% and a capacity of 558.1 mAh g−1 after 200 cycles at 0.16 A g−1, which are superior to the PAA electrode, corresponding to 80.4% and 469.3 mAh g−1, respectively. The improved performance is attributed to the employment of the 4A‐PAA, which mitigates the volume change of the SiOx/graphite anode. This work not only offers a promising binder for Si‐based anodes but also presents a universal solution for other anodes with high volume expansion during cycling.

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“…This issue is indeed well known for acrylate type binders. [ 15b,20 ] Thus, the adhesion and chain flexibility play a synergistic role in realizing the superior adhesion of (deprotect) TBA‐ b ‐BR. The brittle character of the (deprotect) TBA electrode was revealed by the formation of cracks and electrode peeling when subjected to a mandrel bending test using cylindrical mandrels with different diameters (Figure S7, Supporting Information).…”

Section: Figurementioning

confidence: 99%

In Situ Deprotection of Polymeric Binders for Solution‐Processible Sulfide‐Based All‐Solid‐State Batteries

Lee

et al. 2020

Advanced Materials

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Sulfide‐based all‐solid‐state batteries (ASSBs) have been featured as promising alternatives to the current lithium‐ion batteries (LIBs) mainly owing to their superior safety. Nevertheless, a solution‐based scalable manufacturing scheme has not yet been established because of the incompatible polarity of the binder, solvent, and sulfide electrolyte during slurry preparation. This dilemma is overcome by subjecting the acrylate (co)polymeric binders to protection−deprotection chemistry. Protection by the tert‐butyl group allows for homogeneous dispersion of the binder in the slurry based on a relatively less polar solvent, with subsequent heat‐treatment during the drying process to cleave the tert‐butyl group. This exposes the polar carboxylic acid groups, which are then able to engage in hydrogen bonding with the active cathode material, high‐nickel layered oxide. Deprotection strengthens the electrode adhesion such that the strength equals that of commercial LIB electrodes, and the key electrochemical performance parameters are improved markedly in both half‐cell and full‐cell settings. The present study highlights the potential of sulfide‐based ASSBs for scalable manufacturing and also provides insights that protection−deprotection chemistry can generally be used for various battery cells that suffer from polarity incompatibility among multiple electrode components.

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Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode

Cited by 102 publications

References 35 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

A Four‐Armed Polyacrylic Acid Homopolymer Binder with Enhanced Performance for SiO_x/Graphite Anode

In Situ Deprotection of Polymeric Binders for Solution‐Processible Sulfide‐Based All‐Solid‐State Batteries

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Polyvinyl alcohol grafted poly (acrylic acid) as water-soluble binder with enhanced adhesion capability and electrochemical performances for Si anode

Cited by 102 publications

References 35 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

A Four‐Armed Polyacrylic Acid Homopolymer Binder with Enhanced Performance for SiOx/Graphite Anode

In Situ Deprotection of Polymeric Binders for Solution‐Processible Sulfide‐Based All‐Solid‐State Batteries

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A Four‐Armed Polyacrylic Acid Homopolymer Binder with Enhanced Performance for SiO_x/Graphite Anode