Improved performance in micron-sized silicon anodes by in situ polymerization of acrylic acid-based slurry

Qi, Li; Shi, Tongfei; Yoshitake, Hideya; Wang, Hongyu

doi:10.1039/c6ta05650d

Cited by 49 publications

(36 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In situ polymerization of crosslinkable monomers can be an effective method to fabricate the crosslinked polymer binders for Si‐based anodes 149‐152 . Liu et al introduced a highly stretchable crosslinked polyacrylamide (PAM) hydrogel binder for Si anodes by in situ free radical polymerization of acrylamide monomer and bifunctional N,N‐methylenebisacrylamide (MBAA) monomer (Figure 15A).…”

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

207

151

View full text Add to dashboard Cite

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.

show abstract

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

207

151

View full text Add to dashboard Cite

show abstract

“…Indeed, PAAd isplays good selfhealing properties as it contains ah igh concentration of carboxyl functional groups. [17,41,[49][50][51][52] These measurements clearly showedt hat the Si composite electrode film prepared with the PVDF binderh as ah igher resistance to stress and ah igher elastic modulus, but its low elongation indicates that the composite is too brittle compared to those containing PAAa nd Na-CMC. On the contrary,t he composite electrode film with PAN is very ductile, and am ore robust electrode could be expected in the electrochemical cycling tests.…”

Section: Mechanical Properties Of Common Composite Electrodef Ilmsmentioning

confidence: 94%

“…The tensile stress/elongation and elastic modulusm easurements were performedwith composite films, whereas the adhesion strengthtests were performed with the composite films and current collector. [17,41,[49][50][51][52] These measurements clearly showedt hat the Si composite electrode film prepared with the PVDF binderh as ah igher resistance to stress and ah igher elastic modulus, but its low elongation indicates that the composite is too brittle compared to those containing PAAa nd Na-CMC. Hence, on this basis, compositescontaining PAA, Na-CMC,and PANwould be interesting choices;h owever,i th as been also reported [45][46][47][48] that the regenerativen ature of the bindinga dditives after fracture could be another crucial feature.…”

Section: Mechanical Properties Of Common Composite Electrodef Ilmsmentioning

confidence: 99%

“…The better adhesion of the PAAc omposite can be ascribed to the presence of ah igh concentration of hydroxy groups, as this leads to as tronger attachment to the current collector through hydrogen bonding. [17,41,[50][51][52] However,f or the PAN-based composite, ah igher proportion of binder could also contributet ot he highera dhesion strength measured. The adhesion strength to the current collector contributes to the electrical connection between the composite electrode material and the current collector and influences the electrochemical performance of the battery.…”

Section: Mechanical Properties Of Common Composite Electrodef Ilmsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of the Formulations of Silicon‐Based Composite Anodes on their Mechanical, Storage, and Electrochemical Properties

Assresahegn

Bélanger

2017

ChemSusChem

View full text Add to dashboard Cite

In this work, the effects of the formulation of silicon-based composite anodes on their mechanical, storage, and electrochemical properties were investigated. The electrode formulation was changed through the use of hydrogenated or modified (through the covalent attachment of a binding additive such as polyacrylic acid) silicon and acetylene black or graphene sheets as conducting additives. A composite anode with a covalently grafted binder had the highest elongation without breakages and strong adhesion to the current collector. These mechanical properties depend significantly on the conductive carbon additive used and the use of graphene sheets instead of acetylene black can improve elongation and adhesion significantly. After 180 days of storage under ambient conditions, the electronic conductivity and discharge capacity of the modified silicon electrode showed much smaller decreases in these properties than those of the hydrogenated silicon composite electrode, indicating that the modification can result in passivation and a constant composition of the active material. Moreover, the composite Si anode has a high packing density. Consequently, thin-film electrodes with very high material loadings can be prepared without decreased electrochemical performance.

show abstract

“…Meanwhile, nano-sized Si is easy to reunite because of its large surface area and surface energy, but is difficult to achieve during production in a large-scale application [ 18 ]. Compared with nano-sized silicon, micrometre-sized silicon is a good choice [ 19 – 21 ].…”

Section: Introductionmentioning

confidence: 99%

Waterborne polyurethane as a carbon coating for micrometre-sized silicon-based lithium-ion battery anode material

Yan¹,

Huang²,

Zheng³

et al. 2018

R. Soc. open sci.

View full text Add to dashboard Cite

Waterborne polyurethane (WPU) is first used as a carbon-coating source for micrometre-sized silicon. The remaining nitrogen (N) and oxygen (O) heteroatoms during pyrolysis of the WPU interact with the surface oxide on the silicon (Si) particles via hydrogen bonding (Si–OH⋯N and Si–OH⋯O). The N and O atoms involved in the carbon network can interact with the lithium ions, which is conducive to lithium-ion insertion. A satisfactory performance of the Si@N, O-doped carbon (Si@CNO) anode is gained at 25 and 55°C. The Si@CNO anode shows stable cycling performance (capacity retention of 70.0% over 100 cycles at 25°C and 60.3% over 90 cycles at 55°C with a current density of 500 mA g−1) and a superior rate capacity of 864.1 mA h g−1 at 1000 mA g−1 (25°C). The improved electrochemical performance of the Si@CNO electrode is attributed to the enhanced electrical conductivity and structural stability.

show abstract

Improved performance in micron-sized silicon anodes by in situ polymerization of acrylic acid-based slurry

Abstract: The interactions between silicon particles and polymeric binders are a key factor during the course of manufacturing high-capacity Si anodes for lithium-ion batteries.

Cited by 49 publications

References 59 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

Effects of the Formulations of Silicon‐Based Composite Anodes on their Mechanical, Storage, and Electrochemical Properties

Waterborne polyurethane as a carbon coating for micrometre-sized silicon-based lithium-ion battery anode material

Contact Info

Product

Resources

About