Design of hierarchical buffer structure for silicon/carbon composite as a high-performance Li-ion batteries anode

Liu, Zetao; Du, Juntao; Jia, Huina; Wang, Wenchao; Zhang, Minxin; Ma, Jiangkai; Nie, Yi; Liu, Tianqing; Song, Kedong

doi:10.1007/s10854-021-07500-2

Cited by 9 publications

(5 citation statements)

References 58 publications

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“…This result suggests that, on one side, lower currents facilitate the kinetics of irreversible interfacial processes, whereas on the other side, the kinetics of the reversible (de)alloying process is favored at higher currents. In Table , the main characteristics of the electrodes tested in terms of mass loading, composition, rate capability performance, capacity retention at high specific currents and production of the C buffering matrix, are compared to some Si/C composites recently published. − It is worth noticing that, despite the lower performance with respect to some works present in the literature, the Si/CCDHC composite displays a higher capacity retention when going from slow to high current rates, while maintaining a higher active material mass loading and percentage in the electrode composition than many other materials considered hereby. In addition, the preparation of the CCDHC is kept as simple and sustainable as possible, thus offering promising scale-up opportunities.…”

Section: Resultsmentioning

confidence: 99%

Structural and Interfacial Characterization of a Sustainable Si/Hard Carbon Composite Anode for Lithium-Ion Batteries

Sbrascini

Staffolani

Bottoni

et al. 2022

ACS Appl. Mater. Interfaces

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The effects of a biomass-derived hard carbon matrix and a sustainable cross-linked binder are investigated as electrode components for a silicon-based anode in lithium-ion half-cells, in order to reduce the capacity fade due to volume expansion and shrinkage upon cycling. Ex situ Raman spectroscopy and impedance spectroscopy are used to deeply investigate the structural and interfacial properties of the material within a single cycle and upon cycling. An effective buffering of the volume changes of the composite electrode is evidenced, even at a high Si content up to 30% in the formulation, resulting in the retention of structural and interfacial integrity. As a result, a high capacity performance and a very good rate capability are displayed even at high current densities, with a stable cycling behavior and low polarization effects.

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Section: Resultsmentioning

confidence: 99%

Structural and Interfacial Characterization of a Sustainable Si/Hard Carbon Composite Anode for Lithium-Ion Batteries

Sbrascini

Staffolani

Bottoni

et al. 2022

ACS Appl. Mater. Interfaces

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“…[ 315 ] A composite anode with hierarchical buffer structure coated Si nanoparticles possesses good rate performance. [ 316 ] Therein, resorcinol–formaldehyde resin serves as a structural buffer, conductive layer, and provides quick routes for lithium‐ion diffusion and electron transfer inside. It also accommodates the volume change of Si.…”

Section: Self‐healing Electrodesmentioning

confidence: 99%

Bio‐Inspired Electrodes with Rational Spatiotemporal Management for Lithium‐Ion Batteries

Song,

Li,

Gao

et al. 2024

Advanced Science

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Lithium‐ion batteries (LIBs) are currently the predominant energy storage power source. However, the urgent issues of enhancing electrochemical performance, prolonging lifetime, preventing thermal runaway‐caused fires, and intelligent application are obstacles to their applications. Herein, bio‐inspired electrodes owning spatiotemporal management of self‐healing, fast ion transport, fire‐extinguishing, thermoresponsive switching, recycling, and flexibility are overviewed comprehensively, showing great promising potentials in practical application due to the significantly enhanced durability and thermal safety of LIBs. Taking advantage of the self‐healing core–shell structures, binders, capsules, or liquid metal alloys, these electrodes can maintain the mechanical integrity during the lithiation–delithiation cycling. After the incorporation of fire‐extinguishing binders, current collectors, or capsules, flame retardants can be released spatiotemporally during thermal runaway to ensure safety. Thermoresponsive switching electrodes are also constructed though adding thermally responsive components, which can rapidly switch LIB off under abnormal conditions and resume their functions quickly when normal operating conditions return. Finally, the challenges of bio‐inspired electrode designs are presented to optimize the spatiotemporal management of LIBs. It is anticipated that the proposed electrodes with spatiotemporal management will not only promote industrial application, but also strengthen the fundamental research of bionics in energy storage.

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“…[11][12][13][14][15][16] However, silicon undergoes a volume change of up to 420% during the lithiation and de-lithiation process, which can easily lead to particle fragmentation, loss of electrical contact, and repetitive growth of the solid electrolyte interphase (SEI), resulting in poor electrochemical performance. [17][18][19][20][21][22] Nanosizing is an effective strategy to mitigate the volume expansion of silicon. 23 Nano-silicon particles have unique sizes and surface effects that can relieve the problem of particle fragmentation caused by the volume expansion of silicon during cycling.…”

Section: Introductionmentioning

confidence: 99%

“…11–16 However, silicon undergoes a volume change of up to 420% during the lithiation and de-lithiation process, which can easily lead to particle fragmentation, loss of electrical contact, and repetitive growth of the solid electrolyte interphase (SEI), resulting in poor electrochemical performance. 17–22…”

Section: Introductionmentioning

confidence: 99%

Construction of honeycomb porous silicon as a high-capacity and long-life anode toward Li-ion batteries

Han,

Liu,

Jia

et al. 2024

CrystEngComm

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Design of hierarchical buffer structure for silicon/carbon composite as a high-performance Li-ion batteries anode

Cited by 9 publications

References 58 publications

Structural and Interfacial Characterization of a Sustainable Si/Hard Carbon Composite Anode for Lithium-Ion Batteries

Structural and Interfacial Characterization of a Sustainable Si/Hard Carbon Composite Anode for Lithium-Ion Batteries

Bio‐Inspired Electrodes with Rational Spatiotemporal Management for Lithium‐Ion Batteries

Construction of honeycomb porous silicon as a high-capacity and long-life anode toward Li-ion batteries

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