Si@S‐doped C anode with high cycling stability using PVA‐<i>g</i>‐PAA water soluble binder for lithium‐ion batteries

Zhang, Congcong; Su, Jing; Hu, Jinlong; Zhang, Lingzhi

doi:10.1002/app.48764

Cited by 6 publications

(10 citation statements)

References 40 publications

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“…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

226

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

226

151

View full text Add to dashboard Cite

show abstract

“…Later, we reported the synthesis of PVA grafted PAA (PVA-g-PAA) via a free radical polymerization for Si and Si/C anode. [28][29] Binder with excellent stretch capability is extremely important to implement the long term cycling for Si anode required for practical applications. [12][13][14] However, the binders mentioned above lack enough stretch capability to efficiently accommodate the large volume changes of Si particles over cycling.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, we reported a composite of lithiated PAA and terpene resin as a water soluble binder for LiFePO 4 cathode, 27 which demonstrates some advantages of lithiated PAA, such as, extra lithium‐ion compensation for lithium‐ion loss, and strong adhesion capability due to the carboxylate functional groups. Later, we reported the synthesis of PVA grafted PAA (PVA‐g‐PAA) via a free radical polymerization for Si and Si/C anode 28–29 . Binder with excellent stretch capability is extremely important to implement the long term cycling for Si anode required for practical applications 12–14 .…”

Section: Introductionmentioning

confidence: 99%

Partially lithiated ternary graft copolymer with enhanced elasticity as aqueous binder for Si anode

Liu

Zhang

2020

J of Applied Polymer Sci

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Partially lithiated ternary graft copolymers were synthesized through free radical graft polymerization of acrylic acid (AA), lithium acrylate (LiAA) and hydroxyethyl acrylate (HEA) onto polyvinyl alcohol (PVA). With optimized feeding molar ratio of AA/LiAA/HEA (2:1:2), the ternary graft copolymer with partial lithiation shows the best flexibility, elasticity and adhesion strength comparing to PVA-g-PAA and PVA-g-P(AA-HEA) when used as aqueous binder for Si anode. The Si anode using PVA-g-P(AA-LiAA-HEA) with the optimized molar ratio of AA-LiAA-HEA exhibits better cycling stability and rate performance, delivering a capacity of 2265 mAh g −1 with a capacity retention of 82.4% after 200 cycles at 1A g −1. Even at a high current of 10 A g −1 , the Si electrode still obtained a high capacity of 1300 mAh g −1 .

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“…With the rapid developments of (hybrid) electric vehicles, portable electronics, and renewable energy storage system, graphite anode materials are no longer able to meet the growing requirements of practical applications, due to the limited theoretical capacity of 372 mAh·g −1 1,2 . Therefore, many attentions have been paid on the development of various anode materials for the next‐generation lithium batteries with high specific capacities and long cyclic life.…”

Section: Introductionmentioning

confidence: 99%

Si/CNTs@melamine‐formaldehyde resin‐based carbon composites and its improved energy storage performances

Zhao

Zhang

Xian

2020

J of Applied Polymer Sci

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In this paper, Si/carbon nanotubes@melamine-formaldehyde resin (MFR)based carbon (Si/CNTs@C) composites have been fabricated by surface modification, electrostatic self-assembly, cross-linking of MFR under hydrothermal treatment and further carbonization. The microstructure of the Si/CNTs@C composites was characterized, and the effects of CNTs content in Si/CNTs@C composites on their electrochemical performances were also investigated in detail. The results indicate Si/CNTs@C composites as anode materials of Liion batteries exhibit better high-rate and cycling performances compared to Si and Si@MFR-based carbon composites. Notably, Si/CNTs@C composites with 10.4 wt% CNTs show specific capacities of 1900, 1879, 1,688, 1,394, 1,189 mAhÁg −1 at 0.2, 0.5, 1, 2, and 3 AÁg −1 , respectively. Even at 4 and 5 AÁg −1 , their capacities still reach 970 and 752 mAhÁg −1 , respectively. Moreover, they deliver a reversible capacity of 1,184 mAhÁg −1 at 0.5 AÁg −1 after 100 cycles. Therefore, the reasonable structure is of great significance for enhancing the electrochemical performances of Si-based composites.

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Si@S‐doped C anode with high cycling stability using PVA‐g‐PAA water soluble binder for lithium‐ion batteries

Cited by 6 publications

References 40 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

Partially lithiated ternary graft copolymer with enhanced elasticity as aqueous binder for Si anode

Si/CNTs@melamine‐formaldehyde resin‐based carbon composites and its improved energy storage performances

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