Enhanced cycling stability of silicon anode by in situ polymerization of poly(aniline-co-pyrrole)

Wang, Qingtao; Li, Ruirong; Dong, Yu; Zhou, Xiaozhong; Li, Jian; Lei, Ziqiang

doi:10.1039/c4ra07674e

Cited by 11 publications

(7 citation statements)

References 30 publications

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“…Tao et al [ 17 ] prepared hollow core-shell structured Si/C nanocomposites to adapt for the large volume change. In addition, many Si-based materials were modified by new binder or conductive polymer [ 19 – 21 ], carbonaceous materials, such as amorphous carbon [ 22 , 23 ], carbon nanotubes [ 24 ], graphite [ 25 , 26 ], and graphene [ 27 – 32 ]. Graphene has been applied in LIBs in recent years, mainly due to its outstanding flexibility, electrical conductivity, and excellent mechanical strength [ 33 – 36 ].…”

Section: Introductionmentioning

confidence: 99%

A Tremella-Like Nanostructure of Silicon@void@graphene-Like Nanosheets Composite as an Anode for Lithium-Ion Batteries

et al. 2016

Nanoscale Res Lett

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Graphene coating is receiving discernable attention to overcome the significant challenges associated with large volume changes and poor conductivity of silicon nanoparticles as anodes for lithium-ion batteries. In this work, a tremella-like nanostructure of silicon@void@graphene-like nanosheets (Si@void@G) composite was successfully synthesized and employed as a high-performance anode material with high capacity, cycling stability, and rate capacity. The Si nanoparticles were first coated with a sacrificial SiO2 layer; then, the nitrogen-doped (N-doped) graphene-like nanosheets were formed on the surface of Si@SiO2 through a one-step carbon-thermal method, and the SiO2 layer was removed subsequently to obtain the Si@void@G composite. The performance improvement is mainly attributed to the good conductivity of N-doped graphene-like nanosheets and the unique design of tremella nanostructure, which provides a void space to allow for the Si nanoparticles expanding upon lithiation. The resulting electrode delivers a capacity of 1497.3 mAh g−1 at the current density of 0.2 A g−1 after 100 cycles.

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Section: Introductionmentioning

confidence: 99%

A Tremella-Like Nanostructure of Silicon@void@graphene-Like Nanosheets Composite as an Anode for Lithium-Ion Batteries

et al. 2016

Nanoscale Res Lett

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“…This observation seems interesting and agrees to the obtained better electrochemical performance of Si‐nGO as follows. According to the previous reports, the inclined line in the low‐frequency region represents the lithium diffusion impedance, while the depressed semicircle is attributed to the overlap between the SEI film and the interfacial charge transfer impedance ,. The core‐shell structure and the thin nGO sheets improve both the electronic and Li + conductivity of Si‐nGO.…”

Section: Resultsmentioning

confidence: 86%

Nano Graphene Shell for Silicon Nanoparticles: A Novel Strategy for a High Stability Rechargeable Battery Anode

Ramachandran¹,

SarojiniAmma

Varatharajan

et al. 2018

ChemistrySelect

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Many strategies have been adapted to improve the stability of silicon (Si) based anodes, one of the widely studied methods is to make Si-graphene (SiÀ Gr) materials, all have adapted the sandwiched structure of SiÀ Gr or Si-graphene oxide (Si-GO) where Si nanoparticles (NP) are sandwiched between Gr based materials. Herein, we report a simple strategy to achieve SiÀ Gr based anode with a different structure than that of the intercalated structure, which is expected to provide better stability to the SiÀ Gr based anode, i. e. a core-shell structure. This core-shell structure based on a Si-nanographene oxide (Si-nGO) delivers an initial reversible specific capacity of ∼ 2000 mAhg À 1 and stability of � 250 cycles with 80% capacity retention at an active material (AM) AM mass loading of 1.5 mg cm À 2 , and at ∼ 2.0 mg cm À 2 , ∼ 160 cycles stability was achieved, which is one of the best reported values, meanwhile, intercalated Si-graphene oxide (Si-GO) exhibited only < 50 cycles stability at ∼ 2.0 mg cm À 2 mass loading. Higher current rate performance of Si-nGO was ∼ 70% retention of the initial capacity at 5 C, whereas Si-GO retention was < 25% at 5 C. Thus a change in the structure of SiÀ Gr based anode has improved the stability remarkably and shows that it is a promising strategy towards achieving electrode material for advanced lithium-ion batteries (LIBs).

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“…Conductive polymers are the obvious choice in this case and as such, polyaniline (PANi) coatings have been studied by several groups [58,60,61] . H. Lin et al.…”

Section: Organic Coatingsmentioning

confidence: 99%

Engineering of Silicon Core‐Shell Structures for Li‐ion Anodes

Rage

Delbègue

Louvain

et al. 2021

Chemistry A European J

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The amount of silicon in anode materials for Li‐ion batteries is still limited by the huge volume changes during charge‐discharge cycles. Such changes lead to the loss of electrical contacts, as well as mechanical and surface electrolyte interphase (SEI) instabilities, strongly reducing the cycle life. Core‐shell structures have attracted a vast research interest due to the possibility of modifying some properties with a judicious choice of the shell. It is, for example, possible to improve the electronic conductivity and ionic diffusion, or buffer volume variations. This review gives a comprehensive overview of the recent developments and the different strategies used for the design, synthesis and electrochemical performance of silicon‐based core‐shells. It is based on a selection of the main types of silicon coatings reported in the literature, including carbon, inorganic, organic and double‐layer coatings, Finally, a summary of the advantages and drawbacks of these different types of core‐shells as anode materials for Li‐ion batteries and some insightful suggestions in regards to their use are provided.

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Enhanced cycling stability of silicon anode by in situ polymerization of poly(aniline-co-pyrrole)

Abstract: Poly(aniline-co-pyrrole)-encapsulated Si nanoparticles composite anode material were prepared by an in situ chemical oxidation polymerization method.

Cited by 11 publications

References 30 publications

A Tremella-Like Nanostructure of Silicon@void@graphene-Like Nanosheets Composite as an Anode for Lithium-Ion Batteries

A Tremella-Like Nanostructure of Silicon@void@graphene-Like Nanosheets Composite as an Anode for Lithium-Ion Batteries

Nano Graphene Shell for Silicon Nanoparticles: A Novel Strategy for a High Stability Rechargeable Battery Anode

Engineering of Silicon Core‐Shell Structures for Li‐ion Anodes

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