A water-soluble binary conductive binder for Si anode lithium ion battery

Zheng, Mengdan; Wang, Chenxu; Xu, Yisheng; Li, Keqiang; Liu, Dong

doi:10.1016/j.electacta.2019.02.080

Cited by 47 publications

(29 citation statements)

References 39 publications

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“… 193 The continuous electrically conductive PANI network and the strong binding between Si particles and PANI network by the phytic acid crosslinker enabled the superior stable cycling of SiNP anodes (90% capacity retention after 5000 cycles at a current density of 6.0 A g −1 , as shown in Figure 26B). Besides, the PAA crosslinked PANI, 194 carboxyl group functionalized PANI 195 and polyvinyl pyrrolidone (PVP) functionalized PANI 196 were reported to show improved electrolyte uptake, mechanical properties and adhesive strength, and capability to maintain the integrity of electrode, enabling the Si anodes with greatly enhanced cycling performance and stability. Liu et al found that the star‐structured PANI binder is more benefit for improving cycling performance of Si anodes compared to the crosslinked and linear PANI binder 197 …”

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

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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%

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

“…Because of environmental concerns watersoluble binders for active masses in secondary batteries are gaining growing attention. A copolymer of polyvinylpyrrolidone and PANI has been reported for use in a silicon electrode for lithium-ion batteries (Zheng et al 2019). Evidence of hydrogen bonding between the comonomers was somewhat unusually taken as proof of true copolymerization (for a critical examination see also Holze 2011).…”

Section: Auxiliary Components and Functionsmentioning

confidence: 99%

Intrinsically conducting polymers and their combinations with redox-active molecules for rechargeable battery electrodes: an update

Kondratiev

Holze

2021

Chem. Pap.

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Intrinsically conducting polymers and their copolymers and composites with redox-active organic molecules prepared by chemical as well as electrochemical polymerization may yield active masses without additional binder and conducting agents for secondary battery electrodes possibly utilizing the advantageous properties of both constituents are discussed. Beyond these possibilities these polymers have found many applications and functions for various further purposes in secondary batteries, as binders, as protective coatings limiting active material corrosion, unwanted dissolution of active mass ingredients or migration of electrode reaction participants. Selected highlights from this rapidly developing and very diverse field are presented. Possible developments and future directions are outlined.

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“…The uniform and commercially viable CCI, as far as we know, has never been achieved. The solution‐based process represents a potentially scalable preparation method toward practical industrial manufacturing, which is totally different with the magnetron sputtering or plasma‐gas‐aggregation‐type cluster beam deposition, etc 14. In contrast to the impractical combination with noble metals, this feasible synthesis method allows the product to exhibit a fading rate of only 0.068% for 1000 cycles and an aerial capacity of 4.78 mAh cm −2 after 280 cycles based on pure Si particles.…”

Section: Introductionmentioning

confidence: 99%

Accommodation of Silicon in an Interconnected Copper Network for Robust Li‐Ion Storage

Liu

Sun

Yuan

et al. 2020

Adv Funct Materials

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Silicon (Si)‐based materials are one of the most promising anodes to be applied in rechargeable lithium ion batteries. However, the active Si/electrolyte interface causes continuous side reactions and poor conductivity, which significantly decreases the cycling stability. Cu is the only metallic current collector that has been known to promote electron conduction and lithium‐ion transfer without alloying reaction occurrence. However, to the best current knowledge, scalable interface engineering incorporating Cu has not been reported. Herein, this conductive Cu interface (CCI) is constructed through a self‐assembly carbothermic reduction method to achieve efficient protection of Si/electrolyte interfaces while allowing for fast Li+ diffusion. The energy barrier of lithium‐ion diffusion through Cu is calculated to be 0.1965 eV, which is much lower than that through Au, Fe, and Ni films. Benefiting from the enhanced interfacial protection and kinetics of Si with CCI, a fading rate of only 0.068% is maintained for 1000 cycles and an aerial capacity of 4.78 mAh cm−2 is achieved after 280 cycles, which is comparable to the industry standards required for practical application.

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A water-soluble binary conductive binder for Si anode lithium ion battery

Cited by 47 publications

References 39 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

Intrinsically conducting polymers and their combinations with redox-active molecules for rechargeable battery electrodes: an update

Accommodation of Silicon in an Interconnected Copper Network for Robust Li‐Ion Storage

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