Silicon-based 3D electrodes for high power lithium-ion battery

Zheng, Yijing; Smyrek, Peter; Rakebrandt, J.-H.; Seifert, Hans Jürgen; Pfleging, Wilhelm; Kübel, Ch.

doi:10.1109/3m-nano.2017.8286308

Cited by 4 publications

(4 citation statements)

References 13 publications

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“…In particular, the increased surface area provides new lithium-ion diffusion pathways, which improves the SDC at elevated C-rates. The reduction of mechanical stresses, particularly for the electrodes containing silicon, is another contributor for increasing SDCs, as was already established by Zheng et al [18]. For most electrodes, SDC decreased with increasing C-rates until a minimum was reached at a C-rate of C/2 or 1C, after which the capacity increased again (Figure 6).…”

Section: Characterization Of the Manufactured Electrodessupporting

confidence: 72%

“…In particular, the increased surface area provides new lithiumion diffusion pathways, which improves the SDC at elevated C-rates. The reduction of mechanical stresses, particularly for the electrodes containing silicon, is another contributor for increasing SDCs, as was already established by Zheng et al [18]. the SDC.…”

Section: Characterization Of the Manufactured Electrodesmentioning

confidence: 56%

“…Laser generated structures in the Si/graphite material are suitable to implement localized porosities, which reduces the residual stresses of the silicon-containing electrodes due to the volume change during electrochemical cycling and thus suppress the delamination of the electrode from the current collector and the resulting crumbling thereof, as well ensures good electrolyte wettability [16]. This approach was already utilized by Zheng et al [5,17,18] for silicon-graphite anodes. Habedank et al [19,20] structured graphite electrodes with blind holes, which also increased the specific discharge capacity.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Silicon Grade and Electrode Architecture on the Performance of Advanced Anodes for Next Generation Lithium-Ion Cells

2021

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To increase the specific capacity of anodes for lithium-ion cells, advanced active materials, such as silicon, can be utilized. Silicon has an order of magnitude higher specific capacity compared to the state-of-the-art anode material graphite; therefore, it is a promising candidate to achieve this target. In this study, different types of silicon nanopowders were introduced as active material for the manufacturing of composite silicon/graphite electrodes. The materials were selected from different suppliers providing different grades of purity and different grain sizes. The slurry preparation, including binder, additives, and active material, was established using a ball milling device and coating was performed via tape casting on a thin copper current collector foil. Composite electrodes with an areal capacity of approximately 1.70 mAh/cm² were deposited. Reference electrodes without silicon were prepared in the same manner, and they showed slightly lower areal capacities. High repetition rate, ultrafast laser ablation was applied to these high-power electrodes in order to introduce line structures with a periodicity of 200 µm. The electrochemical performance of the anodes was evaluated as rate capability and operational lifetime measurements including pouch cells with NMC 622 as counter electrodes. For the silicon/graphite composite electrodes with the best performance, up to 200 full cycles at a C-rate of 1C were achieved until end of life was reached at 80% relative capacity. Additionally, electrochemical impedance spectroscopies were conducted as a function of state of health to correlate the used silicon grade with solid electrolyte interface (SEI) formation and charge transfer resistance values.

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Section: Characterization Of the Manufactured Electrodessupporting

confidence: 72%

Section: Characterization Of the Manufactured Electrodesmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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The Effect of Silicon Grade and Electrode Architecture on the Performance of Advanced Anodes for Next Generation Lithium-Ion Cells

2021

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“…[41,45] Recent progress in laser processing of silicon-based materials for LIBs includes laser drying of electrode films, ultrafast laser ablation to create grid-structured silicon films, laser porosification of silicon thin films, and laser conversion of commercial silicone-based adhesive tapes to silicon oxide thin films. [46][47][48][49][50][51][52][53][54][55] Although the synthesis processes and battery performance such as rate capability have been improved, poor cycle life remains as a serious issue.…”

Section: Introductionmentioning

confidence: 99%

A Rapid, Scalable Laser‐Scribing Process to Prepare Si/Graphene Composites for Lithium‐Ion Batteries

Katsuyama,

Yang,

Thiel

et al. 2024

Small

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Silicon has gained significant attention as a lithium‐ion battery anode material due to its high theoretical capacity compared to conventional graphite. Unfortunately, silicon anodes suffer from poor cycling performance caused by their extreme volume change during lithiation and de‐lithiation. Compositing silicon particles with 2D carbon materials, such as graphene, can help mitigate this problem. However, an unaddressed challenge remains: a simple, inexpensive synthesis of Si/graphene composites. Here, a one‐step laser‐scribing method is proposed as a straightforward, rapid (≈3 min), scalable, and less‐energy‐consuming (≈5 W for a few minutes under air) process to prepare Si/laser‐scribed graphene (LSG) composites. In this research, two types of Si particles, Si nanoparticles (SiNPs) and Si microparticles (SiMPs), are used. The rate performance is improved after laser scribing: SiNP/LSG retains 827.6 mAh g−1 at 2.0 A gSi+C−1, while SiNP/GO (before laser scribing) retains only 463.8 mAh g−1. This can be attributed to the fast ion transport within the well‐exfoliated 3D graphene network formed by laser scribing. The cyclability is also improved: SiNP/LSG retains 88.3% capacity after 100 cycles at 2.0 A gSi+C−1, while SiNP/GO retains only 57.0%. The same trend is found for SiMPs: the SiMP/LSG shows better rate and cycling performance than SiMP/GO composites.

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A comprehensive review of laser processing-assisted 2D functional materials and their specific applications

Vo,

Jeon,

Nguyen

et al. 2024

Materials Today Physics

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Silicon-based 3D electrodes for high power lithium-ion battery

Cited by 4 publications

References 13 publications

The Effect of Silicon Grade and Electrode Architecture on the Performance of Advanced Anodes for Next Generation Lithium-Ion Cells

The Effect of Silicon Grade and Electrode Architecture on the Performance of Advanced Anodes for Next Generation Lithium-Ion Cells

A Rapid, Scalable Laser‐Scribing Process to Prepare Si/Graphene Composites for Lithium‐Ion Batteries

A comprehensive review of laser processing-assisted 2D functional materials and their specific applications

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