Preparation of polypyrrole-coated silicon nanoparticles

La, Hyun-Shil; Park, Ki-Soo; Nahm, Kee-Suk; Jeong, Kyu-Kwan; Lee, Youn-Sik

doi:10.1016/j.colsurfa.2005.07.003

Cited by 27 publications

(15 citation statements)

References 17 publications

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“…Further, conductive polymer binders are typically considerably more mechanically flexible than traditional conductive agents, which make them attractive in electrode compositions where large mechanical changes must be accommodated during cycling ( Figure ) . Polypyrrole (Ppy) has been demonstrated in this manner as an effective conducting binder in cathodes based on a variety of materials including LiMn 2 O 4 , V 2 O 5 , Si, LiV 3 O 8 and LiFePO 4 . Other conductive polymers such as polyaniline have also been employed, with reports suggesting an improved rate capacity and cyclability of the cathode based on LiFePO 4 , LiMnNiO 4 , LiV 3 O 8 and Fe 3 O 4 .…”

Section: Nanocomposite Applications In Lithium Battery Electrodesmentioning

confidence: 99%

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

Srivastava

Schaefer

Yang³

et al. 2013

Advanced Materials

254

200

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Polymer-particle composites are used in virtually every field of technology. When the particles approach nanometer dimensions, large interfacial regions are created. In favorable situations, the spatial distribution of these interfaces can be controlled to create new hybrid materials with physical and transport properties inaccessible in their constituents or poorly prepared mixtures. This review surveys progress in the last decade in understanding phase behavior, structure, and properties of nanoparticle-polymer composites. The review takes a decidedly polymers perspective and explores how physical and chemical approaches may be employed to create hybrids with controlled distribution of particles. Applications are studied in two contexts of contemporary interest: battery electrolytes and electrodes. In the former, the role of dispersed and aggregated particles on ion-transport is considered. In the latter, the polymer is employed in such small quantities that it has been historically given titles such as binder and carbon precursor that underscore its perceived secondary role. Considering the myriad functions the binder plays in an electrode, it is surprising that highly filled composites have not received more attention. Opportunities in this and related areas are highlighted where recent advances in synthesis and polymer science are inspiring new approaches, and where newcomers to the field could make important contributions.

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Section: Nanocomposite Applications In Lithium Battery Electrodesmentioning

confidence: 99%

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

Srivastava

Schaefer

Yang³

et al. 2013

Advanced Materials

254

200

View full text Add to dashboard Cite

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“…Tang and coworkers54 reported the phase morphology and particle structure of a poly(ethyl acrylate)–SiO 2 composite. Poly(ethylene‐2,6‐naphthalate)–SiO 2 ,55 polyimide–SiO 2 ,56 ethylene–propylene–diene‐terpolymer/SiO 2 ,57 polypyrrole– SiO 2 58 hybrids etc. have been prepared.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of core‐shell SiO₂ nanoparticles/poly(3‐aminophenylboronic acid) composites

Zhang

Lee

Reddy

et al. 2007

J of Applied Polymer Sci

314

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SiO 2 /Poly(3-aminophenylboronic acid) (PAPBA) composites were synthesized under different experimental conditions, using ultrasonic irradiation method. Polymerization was carried out in the presence of sodium fluoride and D-fructose to anchor 3-aminophenylboronic acid groups on to SiO 2 surface. The SiO 2 /PAPBA nanocomposite prepared by NaF and D-fructose in the polymerization medium was found to show different morphology, electrical properties, thermal behavior and structural characterization in comparison to the nanocomposites prepared under other conditions. Ultrasonic irradiation minimizes the aggregation of nanosilica and promotes anchoring of PAPBA units over SiO 2 surface. The morphology of PAPBA/ SiO 2 nanocomposite was investigated by using transmission electron microscopy, UV-visible spectroscopy; thermogravimetric analysis, Fourier transform infrared spectroscopy, and X-ray diffraction analysis were used for characterization. Transmission electron microscope of the nanocomposites observation shows that SiO 2 /PAPBA composite, prepared with D-fructose and NaF under ultrasonication has a core-shell morphology. The thermal and crystalline properties of core-shell SiO 2 /PAPBA nanocomposite was prepared via ultrasonication method is different from the SiO 2 /PAPBA nanocomposite prepared via conventional stirring method, in which SiO 2 nanoparticles are submerged in PAPBA. Conductivity of the composite prepared via ultrasonication shows around 0.2 S/cm.

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“…Whereas n-type polymers can be electrochemically doped in this voltage range, p-type polymers cannot. Indeed, several literature reports on p-type binders for Si anodes such as polyaniline, 88 polypyrrole, 89,90 and PEDOT:PSS 91,92 exhibited poor cycling performances in comparison to that of the conventional Si electrodes with conductive carbon agents. Therefore, p-type binders are not generally desirable for Si anodes.…”

Section: P-type Binders Without Dopingmentioning

confidence: 99%

The emerging era of supramolecular polymeric binders in silicon anodes

2018

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Silicon (Si) anode is among the most promising candidates for the next-generation high-capacity electrodes in Li-ion batteries owing to its unparalleled theoretical capacity (4200 mA h g À1 for Li 4.4 Si) that is approximately 10 times higher than that of commercialized graphitic anodes (372 mA h g À1 for LiC 6 ).The battery community has witnessed substantial advances in research on new polymeric binders for silicon anodes mainly due to the shortcomings of conventional binders such as polyvinylidene difluoride (PVDF) to address problems caused by the massive volume change of Si (300%) upon (de)lithiation. Unlike conventional battery electrodes, polymeric binders have been shown to play an active role in silicon anodes to alleviate various capacity decay pathways. While the initial focus in binder research was primarily to maintain the electrode morphology, it has been recently shown that polymeric binders can in fact help to stabilize cracked Si microparticles along with the solid-electrolyte-interphase (SEI) layer, thus substantially improving the electrochemical performance. In this review article, we aim to provide an in-depth analysis and molecular-level design principles of polymeric binders for silicon anodes in terms of their chemical structure, superstructure, and supramolecular interactions to achieve good electrochemical performance. We further highlight that supramolecular chemistry offers practical tools to address challenging problems associated with emerging electrode materials in rechargeable batteries.

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Preparation of polypyrrole-coated silicon nanoparticles

Cited by 27 publications

References 17 publications

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

Synthesis and characterization of core‐shell SiO₂ nanoparticles/poly(3‐aminophenylboronic acid) composites

The emerging era of supramolecular polymeric binders in silicon anodes

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Preparation of polypyrrole-coated silicon nanoparticles

Cited by 27 publications

References 17 publications

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

Synthesis and characterization of core‐shell SiO2 nanoparticles/poly(3‐aminophenylboronic acid) composites

The emerging era of supramolecular polymeric binders in silicon anodes

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Synthesis and characterization of core‐shell SiO₂ nanoparticles/poly(3‐aminophenylboronic acid) composites