A novel textile-like carbon wrapping for high-performance silicon anodes in lithium-ion batteries

Kim, Jong Min; Guccini, Valentina; Kim, Dong-Won; Oh, Jiseop; Park, Seungman; Jeon, Youngmoo; Hwang, Tae‐Kon; Salazar-Alvarez, Germán; Piao, Yuanzhe

doi:10.1039/c8ta01414k

Cited by 50 publications

(36 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As seen clearly, FEC exhibits a degradation process at 1.33 V, prior to the reduction peak at 0.64 V of EC-based electrolyte . SiO has two redox pairs at 0.13 V/∼0 V during lithiation and 0.3 V/0.5 V during delithiation, corresponding to the two-stage reversible (de)alloying of (Li x )Si. − The (de)lithiation of graphite shows a sharp cathodic peak at ∼0 V and an anodic peak at 0.23 V, overlapping with that of SiO. In addition, the intensity of the reversible redox peaks increases with cycles especially for the FEC-based electrolyte, indicating the positive role of FEC in the activation of SiO.…”

Section: Resultsmentioning

confidence: 92%

“…The EIS spectra are associated with the interfacial resistance (R sei ), charge transfer resistance (R ct ), and Warburg diffusion impedance (W z ) from high to low frequency. 32 Generally, the interfacial R sei increased with cycles while the charge transfer R ct decreased with cycles, corresponding to the activation process of the SiO electrode. The resistance of R sei and R ct in FEC-based electrolyte are obviously smaller than those in EC-based electrolyte, indicating the positive role of FEC in accelerating the charge transport process.…”

Section: Resultsmentioning

confidence: 94%

See 1 more Smart Citation

Effect of Fluoroethylene Carbonate on Solid Electrolyte Interphase Formation of the SiO/C Anode Observed by In Situ Atomic Force Microscopy

Zhao

Wang

Liu

et al. 2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Silicon oxide-based materials are promising anode materials for the real application in lithium-ion batteries. The solid electrolyte interphase is vital for the cyclability and rate capability of the electrode material. Here, in this study, the effect of fluoroethylene carbonate (FEC) as the well-known electrolyte additive on the interface film formation of the commercial SiO/C anode was investigated. The potential-dependent morphology of the SEI layer were obtained via in situ atomic force microscopy (AFM) for the first two cycles and ex situ AFM for the 10th, 30th, and 50th cycles. The morphology analysis was complemented by the chemical composition evolution by ex situ X-ray photoelectron spectroscopy and Young's modulus calculation via PeakForce quantitative nanomechanical mapping of AFM. The results indicated a dense, compact, and stiff SEI layer on the surface of SiO/C in FEC-based electrolyte, in contrast to the scattered and thin SEI layer in ethylene carbonate-based electrolyte.

show abstract

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 94%

Effect of Fluoroethylene Carbonate on Solid Electrolyte Interphase Formation of the SiO/C Anode Observed by In Situ Atomic Force Microscopy

Zhao

Wang

Liu

et al. 2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…In addition, the hybridization of Si nanoparticles and 1D carbon could be facilely realized by utilizing cellulose as the precursor of 1D carbon, by virtue of its low cost, abundance, renewability, and porous nature. For examples, Kim et al prepared a textile‐like C–Si hybrid by pyrolysis of a mixture of cellulose nanofibers and Si nanoparticles . The pyrolyzed nanofibers endowed the hybrid with a wide‐range carbonaceous network and a porous structure, thus facilitating the electron and ion transport and contributing to the improved electrochemical performance.…”

Section: Dimensional Design Upon Nano‐simentioning

confidence: 99%

Dimensionally Designed Carbon–Silicon Hybrids for Lithium Storage

Zhang

Kong

et al. 2018

Adv Funct Materials

161

112

View full text Add to dashboard Cite

Silicon, as one of the most promising candidates for next-generation lithium-ion batteries (LIB), is intensively researched. Although various efforts is devoted to addressing major issues of silicon anodes, the intrinsic low conductivity and tremendous volume change still hinder its further real practical applications. Constructing carbon-silicon hybrid materials is regarded as the powerful strategy to improve the electrochemical lithium storage performance of silicon, in which the component dimensional variations and the dimensional hybridization way play critical roles in improving lithium storage performances. Carbon-silicon hybrids are classified herein, based on dimensional variations of silicon and carbon, and the latest representative progresses on carbon-silicon hybrids following such classifications are elaborated, with emphasis on the involved dimensional design formulas, the resultant synergistic effects, and the potential in performance enhancement. To conclude, the future directions and prospects in the field are discussed, providing insight into the rational design and scalable construction of advanced carbon-silicon hybrids and electrode systems for practical LIB.

show abstract

“…[2][3] During the past decade, there has been a strong shift of focus onto alloy anode candidates which achieve some of the highest absolute specific capacity figures, such as silicon (Si), tin (Sn), and germanium (Ge). [4][5] To date, only limited success has been attained for Al-based anodes due to the issues that are not yet resolved, including significant mechanical strain, 6 brittleness of the β-LiAl, [7][8] and electrode pulverization during delithiation. [9][10] Our previous study suggests that the Al/LiAl/Al (α/β/α) phase transformations might be intrinsically challenging to utilize due to the formation of nanopores, which cause a loss of electrolyte due to secondary SEI formation on the large surface area.…”

Section: Introductionmentioning

confidence: 99%

Aluminum Foil Anodes for Li-ion Rechargeable Batteries: The Role of Li Solubility within β-LiAl

Zheng

Kramer

Mönig

et al. 2021

Preprint

View full text Add to dashboard Cite

Li-ion battery (LIB) electrodes contain a substantial amount of electrochemically inactive materials, including binder, conductive agent, and current collectors. These extra components significantly dilute the specific capacity of whole electrodes, and thus have led to efforts to utilize foils, e.g., Al, as the sole anode material. Interestingly, the literature has many reports of fast degradation of Al electrodes, where less than a dozen cycles can be achieved. However, in some studies, Al anodes demonstrate stable cycling life with several hundred cycles. In this work, we present a successful pathway for enabling long-term cycling of simple Al foil anodes: β-LiAl phase grown from Al foil (α-Al) exhibits a cycling life of 500 cycles with a ~96% capacity retention when paired with a commercial cathode. The excellent performance stems from strategic utilization of the Li solubility range of β-LiAl that can be (de-)lithiated without altering its crystal structure. This solubility range at room temperature is determined to be ~6 at%. Consequently, this design circumvents the critical issues associated with the α/β/α phase transformations, such as volume change, mechanical strain, and nanopore formation. Application-wise, the maturity of aluminum industry, combined with excellent sustainability prospects, makes this anode an important option for future devices.

show abstract

A novel textile-like carbon wrapping for high-performance silicon anodes in lithium-ion batteries

Abstract: A novel textile-like carbon wrapping is a better alternative to conventional conformal carbon coating.

Cited by 50 publications

References 59 publications

Effect of Fluoroethylene Carbonate on Solid Electrolyte Interphase Formation of the SiO/C Anode Observed by In Situ Atomic Force Microscopy

Effect of Fluoroethylene Carbonate on Solid Electrolyte Interphase Formation of the SiO/C Anode Observed by In Situ Atomic Force Microscopy

Dimensionally Designed Carbon–Silicon Hybrids for Lithium Storage

Aluminum Foil Anodes for Li-ion Rechargeable Batteries: The Role of Li Solubility within β-LiAl

Contact Info

Product

Resources

About