Morphology, composition and electrochemistry of a nano-porous silicon versus bulk silicon anode for lithium-ion batteries

Jiang, Tianchan; Zhang, Ruibo; Yin, Qiyue; Zhou, Wenchao; Dong, Zhixin; Chernova, Natasha A.; Wang, Qi; Omenya, Fredrick; Whittingham, M. Stanley

doi:10.1007/s10853-016-0599-8

Cited by 26 publications

(14 citation statements)

References 31 publications

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“…One potential solution is to reduce the particle size of the cathode material to allow shorter ion diffusion lengths and enhance ingress/egress of Mg 2+ ions by increasing the surface area exposed to the electrolyte. This strategy has been implemented to activate Li + insertion into olivine LiMnPO 4 [ 33,34 ] and to improve the electrochemistry of other Li‐ion [ 35–42 ] as well as Mg electrode materials. [ 43–47 ] Nanomaterials can either be prepared (1) directly through rapid, low‐temperature syntheses that limit the growth of crystallites or (2) by mechanical milling of micron‐sized materials.…”

Section: Introductionmentioning

confidence: 99%

Direct Nano‐Synthesis Methods Notably Benefit Mg‐Battery Cathode Performance

et al. 2020

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Rechargeable magnesium batteries are promising candidates for nextgeneration electrochemical energy storage, but their development is severely hindered by sluggish solid-state diffusion and significant desolvation penalties of the divalent cation. Studies suggest that nano-sized electrode materials alleviate these issues by shortening diffusion lengths and increasing electrode/electrolyte interaction. Here, the effect of particle size and synthetic methodology on the electrochemical performance of four sulfide cathode materials in Mg batteries is investigated: layered TiS 2 , CuS, spinel Ti 2 S 4 , and CuCo 2 S 4 . In these sulfide hosts, the direct preparation of nano-dimensional crystallites is critical to activate or improve electrochemistry. Even promising cathode materials can appear electrochemically inert when micron-sized particles are investigated (e.g., CuCo 2 S 4 ), and mechanical milling leads to surface degradation of active material which severely limits performance. However, nano-sized CuCo 2 S 4 prepared directly reaches a capacity nearly double that of ball-milled material and delivers 350 mAh g −1 at 60 °C. This work provides synthetic considerations which may be crucial in the discovery and design of novel Mg cathode materials, so that promising candidates are not overlooked. By extension, in oxide materials where Mg 2+ diffusion is expected to be much more sluggish, this factor is anticipated to be even more important when screening for new hosts.

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Section: Introductionmentioning

confidence: 99%

Direct Nano‐Synthesis Methods Notably Benefit Mg‐Battery Cathode Performance

et al. 2020

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“…[28] Jiang et al confirmed that porous Si powder enhances cycling stability compared to standard Si powder. [29] Demirkan et al improved the cycling stability by using low density thin film Si to increase the porosity of the film. [30] A combination of the approaches to adjust the morphology of Si for stable cycling in LIB is necessary in order to use the potential of the high specific capacity of Si.…”

Section: Doi: 101002/aenm201701705mentioning

confidence: 99%

Laser Porosificated Silicon Anodes for Lithium Ion Batteries

Sämann

Kelesiadou

Hosseinioun

et al. 2017

Advanced Energy Materials

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This study presents the first laser porosificated silicon anode for lithium‐ion batteries. The pulsed laser induced pore creation improves the cycling stability of the d = 210 nm thick sputtered thin film anodes compared to plain Si. Galvanostatic cycling with a charge capacity limited to C = 932 mAh g−1 and a 2C current rate shows a stable cycling for more than N = 600 cycles. After N = 3000 cycles the laser porosificated and crystallized Si has a remaining capacity of C3000 > 120 mAh g−1. Postmortem scanning electron microscopy images after N = 3000 cycles prove that the laser porosification reduces cracks in the active layer.

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“…Among these additives, content of the silicon in nature is abundant, and its theoretical capacity attains 4200 mAh/g. Recently, Many Si‐based materials have been successfully synthesized to improve the cycling performance due to the synergy effect between active materials and silicon . Graphene is often used in LIB anode material because of its advantages of large surface area, good electrical conductivity, and high electron mobility .…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Many Si-based materials have been successfully synthesized to improve the cycling performance due to the synergy effect between active materials and silicon. [15][16][17] Graphene is often used in LIB anode material because of its advantages of large surface area, good electrical conductivity, and high electron mobility. [18][19][20] In addition, graphene-supported silicon composites exhibited not only more excellent cycling performance, but also higher specific capacity.…”

Section: Introductionmentioning

confidence: 99%

Preparation and electrochemical properties of graphene‐supported Si‐TiO₂ nanospheres as anode material for Li‐ion batteries

Wang

Jiang

et al. 2018

Surface & Interface Analysis

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Graphene‐supported Si‐TiO2 (Si‐Ti‐GE) composites have been synthesized by a simple polymerization and sintering method. In the Si‐Ti‐GE composites, many small Si‐TiO2 particles are scattered on the graphene sheet, which can mitigate the agglomeration of the material and further reduce the particle size. The initial discharge capacities of Si‐TiO2, Si‐Ti‐GE‐1, Si‐Ti‐GE‐2, and Si‐Ti‐GE‐3 are 336.9, 337.2, 339.8, and 356.6 mAh g−1 at the current density of 200 mA g−1, respectively. The discharge rate capacities of TiO2, Si‐TiO2, and Si‐Ti‐GE‐3 composites retain 57.5%, 41.7%, and 82.1% at the current density from 100 to 400 mA g−1, respectively. Therefore, the introduction of graphene not only could facilitate the Li+ diffusion and electron transport but also could make better electrical conductivity.

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Morphology, composition and electrochemistry of a nano-porous silicon versus bulk silicon anode for lithium-ion batteries

Cited by 26 publications

References 31 publications

Direct Nano‐Synthesis Methods Notably Benefit Mg‐Battery Cathode Performance

Direct Nano‐Synthesis Methods Notably Benefit Mg‐Battery Cathode Performance

Laser Porosificated Silicon Anodes for Lithium Ion Batteries

Preparation and electrochemical properties of graphene‐supported Si‐TiO₂ nanospheres as anode material for Li‐ion batteries

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Morphology, composition and electrochemistry of a nano-porous silicon versus bulk silicon anode for lithium-ion batteries

Cited by 26 publications

References 31 publications

Direct Nano‐Synthesis Methods Notably Benefit Mg‐Battery Cathode Performance

Direct Nano‐Synthesis Methods Notably Benefit Mg‐Battery Cathode Performance

Laser Porosificated Silicon Anodes for Lithium Ion Batteries

Preparation and electrochemical properties of graphene‐supported Si‐TiO2 nanospheres as anode material for Li‐ion batteries

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Preparation and electrochemical properties of graphene‐supported Si‐TiO₂ nanospheres as anode material for Li‐ion batteries