Si nanowires grown by Al-catalyzed plasma-enhanced chemical vapor deposition: synthesis conditions, electrical properties and application to lithium battery anodes

Toan, Le Duc; Moyen, Eric; Zamfir, Mihai Robert; Joe, Jemee; Kim, Young Woo; Pribat, Didier

doi:10.1088/2053-1591/3/1/015003

Cited by 10 publications

(10 citation statements)

References 37 publications

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“…374 In other studies the incorporation of high amounts of metal atoms from the seed in the Si NW host lattice can be expected on the basis of follow-up papers describing successful incorporation, but metal incorporation has not been discussed and direct proof via quantitative characterization methods is missing in these reports. 379,389,396,397,416,425 The incorporation of Au in Si from the seed is also not mentioned in most reports, even though Au concentrations in Si NWs can be in the range of the solid solubility of ∼1 × 10 17 cm −3 (∼2 × 10 −4 atom %) 234 which is significant for the electronic performance since Au introduces deep-level traps. 342 A report on doping of Si NWs with Au slightly beyond the expected thermodynamic limit via self-seeding can be found in literature.…”

Section: Metastable Group IV Nanostructuresmentioning

confidence: 99%

“…Reports describing surface accumulation and clustering without any sign of homogeneous incorporation or proper determination of heteroatomic species in the Si lattice are omitted, even though conductivities and electrical properties have been determined . In other studies the incorporation of high amounts of metal atoms from the seed in the Si NW host lattice can be expected on the basis of follow-up papers describing successful incorporation, but metal incorporation has not been discussed and direct proof via quantitative characterization methods is missing in these reports. ,,,,, …”

Section: Metastable Group IV Nanostructuresmentioning

confidence: 99%

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Metastable Group IV Allotropes and Solid Solutions: Nanoparticles and Nanowires

2020

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In the past decades, group IV nanowires and nanoparticles have been the subject of extensive research. Beside tremendous progress in morphological control and integration in advanced device architectures, research on allotropes and metastable compositions has gained considerable interest. Several new approaches now allow the controlled formation of specific allotropes in the nanostructured form as well as chemical compositions not attainable by traditional synthesis protocols. The conditions applied to form these metastable solid solutions and allotropes are usually far from thermodynamic equilibrium or rely on unconventional templates. The increased interest in the field of metastable group IV nanostructures arises from their altered physical properties, including tunable, direct bandgaps with energies equivalent to the near- to mid-infrared spectral region as described for materials such as Ge1–x Sn x and hexagonal Si1–x Ge x . The implementation of these material characteristics in complementary metal oxide semiconductor (CMOS) processes are desirable for applications in electronics, optoelectronics, sensors, optics, etc. but also their use as nonsurface bound nanoparticles in sensing, nanobiotechnology and nanomedicine can offer additional opportunities. This review article highlights both the important advancements and still open questions for the continued development of these nanoscaled materials for next-generation device concepts.

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Section: Metastable Group IV Nanostructuresmentioning

confidence: 99%

Section: Metastable Group IV Nanostructuresmentioning

confidence: 99%

Metastable Group IV Allotropes and Solid Solutions: Nanoparticles and Nanowires

2020

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“…Recently Toan et Al has used highly doped silicon nanowire produced by Alcatalyzed plasma-enhanced chemical vapor deposition, as lithium-ion battery anodes, they show a good cycling behavior during the first 65 charge-discharge cycles, the electrode capacity was still 1400 mAh.g −1 after 150 cycles at 0.1°C. They attribute this degradation to the delamination of the SiNWs from the stainless steel substrate on which they were grown [88].…”

Section: Anodes Of Li-ion Batteriesmentioning

confidence: 99%

Nanowires: a new pathway to nanotechnology-based applications

et al. 2016

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“…7−14 These combined challenges make pure silicon anodes almost impractical for any near-term application unless the fundamental issues are addressed. 10−12 There has been an intense research to mitigate volume change during cycling, such as producing Si-nanoparticles (NPs), 7,10,13−15 aligned Si-nanowires/nanotubes, 9,16−19 dispersing silicon into an active (such as carbon)/inactive (e.g., SiO 2 ) matrix, 20−29 silicon-based thin films, 30−34 free standing Si–C electrodes, and different morphologies of silicon. 35−41 Taking benefit of high conductivity of carbon and high-capacity silicon, recent reports demonstrate that carbon–silicon nanocomposites can circumvent the issues associated with silicon and improve the overall electrochemical performance of Si-anode for Li-ion batteries.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Silicon–Carbon 3D Electrode Architectures for High-Performance Lithium-Ion Batteries

et al. 2018

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Silicon is an attractive anode material for lithium-ion batteries. However, silicon anodes have the issue of volume change, which causes pulverization and subsequently rapid capacity fade. Herein, we report organic binder and conducting diluent-free silicon–carbon 3D electrodes as anodes for lithium-ion batteries, where we replace the conventional copper (Cu) foil current collector with highly conductive carbon fibers (CFs) of 5–10 μm in diameter. We demonstrate here the petroleum pitch (P-pitch) which adequately coat between the CFs and Si-nanoparticles (NPs) between 700 and 1000 °C under argon atmosphere and forms uniform continuous layer of 6–14 nm thick coating along the exterior surfaces of Si-NPs and 3D CFs. The electrodes fabricate at 1000 °C deliver capacities in excess of 2000 mA h g –1 at C/10 and about 1000 mA h g –1 at 5 C rate for 250 cycles in half-cell configuration. Synergistic effect of carbon coating and 3D CF electrode architecture at 1000 °C improve the efficiency of the Si–C composite during long cycling. Full cells using Si–carbon composite electrode and Li 1.2 Ni 0.15 Mn 0.55 Co 0.1 O 2- based cathode show high open-circuit voltage of >4 V and energy density of >500 W h kg –1 . Replacement of organic binder and copper current collector by high-temperature binder P-pitch and CFs further enhances energy density per unit area of the electrode. It is believed that the study will open a new realm of possibility for the development of Li-ion cell having almost double the energy density of currently available Li-ion batteries that is suitable for electric vehicles.

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Si nanowires grown by Al-catalyzed plasma-enhanced chemical vapor deposition: synthesis conditions, electrical properties and application to lithium battery anodes

Cited by 10 publications

References 37 publications

Metastable Group IV Allotropes and Solid Solutions: Nanoparticles and Nanowires

Metastable Group IV Allotropes and Solid Solutions: Nanoparticles and Nanowires

Nanowires: a new pathway to nanotechnology-based applications

Nanostructured Silicon–Carbon 3D Electrode Architectures for High-Performance Lithium-Ion Batteries

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