scalable synthesis of silicon-nanolayer-embedded graphite for

Nanofabrication by thermal plasma jets: From

2019/2/19Scalable synthesis of silicon nanowires by a pulse-modulated induction thermal plasma (PM-ITP) jet. (a) Schematic of the process. (b) Photo of the as-produced samples. (c) X-ray diffraction spectrum. (d) FE-SEM image of silicon nanowires. (d) TEM image of a

Design and Synthesis of Nanostructured Materials for

The silicon etch pit array is finally obtained after removal of the polymer template through ultrasonication in toluene []. The resulting etched features on the silicon surface can be functionalized with other materials (e.g., gold nanoparticles), allowing for the20, 21].

Graphene on the Verge of Delivering on its Potential

The approach uses a modified deposition method that removes the need for the transfer processes commonly applied in most large area graphene synthesis methods. Therefore, the graphene can be produced in a uniform, single layer directly on a wide range of substrates, including silicon, silicon carbide, sapphire, gallium nitride, and other semiconductor-compatible substrates.

Facile mechanochemical synthesis of non

Accepted Manuscript Facile mechanochemical synthesis of non-stoichiometric silica-carbon composite for enhanced lithium storage properties Bo Zhang, Hongwei Wang, Chang Liu, Dejun Li, Hyun-Kyung Kim, Chris Harris, Cheng-yen Lao, Amr Abdelkader, Kai Xi

Carbon nanotube

Chirality and mirror symmetry A nanotube is chiral if it has type (n,m), with m 0 and m ≠ n; then its enantiomer (mirror image) has type (m,n), which is different from (n,m).This operation corresponds to mirroring the unrolled strip about the line L through A1 that makes an angle of 30 degrees clockwise from the direction of the u vector (that is, with the direction of the vector u+v).

Eco

Eco-friendly synthesis of SiO2 nanoparticles confined in hard carbon: A promising material with unexpected mechanism for Li-ion batteries Cristina Nita a, b, Julien Fullenwarth c, d, Laure Monconduit c, d, Jean-Marc Le Meins a, Philippe Fioux a, Julien Parmentier a, Camelia Matei Ghimbeu a, d, *

Synthesis and functionalization of graphene and

2016/2/4Graphene is a two-dimensional material with amazing characteristics, which grant it the title "wonder material". It has grabbed appreciable attention due to its exceptional electrical, optical, thermal, and mechanical properties. Because of these interesting properties, graphene has found its way into a wide variety of biosensing applications. It has been used as a transducer in

Research : 한양대학교 에너지공학과 김한수교수님 연구실

The scalable sol–gel process can open up a new avenue for the versatile preparation of porous SiO x lithium storage materials. 1.3 Dual-size silicon nanocrystal-embedded SiO x nanocomposites as high-capacity lithium storage materials

ScholarWorks: Scalable synthesis of silicon

Title Scalable synthesis of silicon-nanolayer-embedded graphite for high-energy lithium-ion batteries Author Ko, Minseong; Chae, Sujong; Ma, Jiyoung; Kim, Namhyung; Lee, Hyun-Wook; Cui, Yi; Cho, Jaephil Issue Date 2016-08 Publisher NATURE PUBLISHING

Towards high energy density lithium battery anodes:

Silicon and lithium metal are considered as promising alternatives to state-of-the-art graphite anodes for higher energy density lithium batteries because of their high theoretical capacity. However, significant challenges such as short cycle life and low coulombic efficiency have seriously hindered their pr Most popular 2018-2019 energy articles

PNNL, GM team develops design principle for stable

2017/4/28Recently, Si-nanolayer-embedded graphite prepared using the chemical vapor deposition of Si on graphite was reported to have ~517 mAh/g specific capacity and 96% capacity retention over 100 cycles with 50-cycle end-of-life swelling of ~38%.

[PDF] Robust Pitch on Silicon Nanolayer–Embedded

Notably, pitch-coated silicon nanolayer–embedded graphite (SG) exhibits superior capacity retention (81.9%) compared to that of acetylenecoated SG (66%) over 200 cycles in a full-cell by effectively mitigating volume expansion, even under industrial electrode

Engineering Empty Space between Si Nanoparticles for Lithium

2018/8/1developed a low-cost and scalable synthesis method. The process flow is described in Figure 2a (see Experimental details in Supporting Information). First, Si nanoparticles were mixed with inexpensive silicon dioxide precursor solution (tetraethox

Rational

2020/6/2Abstract Silicon-based anodes are promising anode materials for lithium-ion batteries. However, during the charge–discharge processes, the huge volume change of silicon leads to the repeated formation of solid-electrolyte interphase layer, structure fracture and loss of electric contact, which seriously limits their practical applications. In this paper, a rational design combining graphite

Facile synthesis of graphitic carbons__

Springer Science+Business Media B.V. 2012 Abstract A facile and potentially scalable synthesis route to obtain SnO2–carbon composites was developed. SnO2 nanoparticles were deposited on the surface of two types of graphitic carbon: (a) commercial porous graphite (HG)

Mechanochemical Synthesis of Catalytic Materials

Mechanochemical synthesis offers a straightforward, scalable, and often more sustainable route for the synthesis of catalytic materials. Key advantages of mechanochemically‐assisted preparations include operation without a need for additives (e.g., solvents, templates, surfactants) and post‐synthetic treatments in many cases.

Synthesis and functionalization of graphene and

2016/2/4Graphene is a two-dimensional material with amazing characteristics, which grant it the title "wonder material". It has grabbed appreciable attention due to its exceptional electrical, optical, thermal, and mechanical properties. Because of these interesting properties, graphene has found its way into a wide variety of biosensing applications. It has been used as a transducer in

Graphene on the Verge of Delivering on its Potential

The approach uses a modified deposition method that removes the need for the transfer processes commonly applied in most large area graphene synthesis methods. Therefore, the graphene can be produced in a uniform, single layer directly on a wide range of substrates, including silicon, silicon carbide, sapphire, gallium nitride, and other semiconductor-compatible substrates.

Scalable synthesis of nanoporous silicon microparticles for highly

nanoporous silicon delivers a higher initial reversible capacity and initial Coulombic efficiency compared to commercial Si nan oparticles (3,033 mAh/g vs. 2,418 mAh/g, 84.3% vs. 73.1%). Synthesis is highly scalable, and a yield of 90.4% is achieved for the

EU H2020 Project LIB

To tackle these critical problems, a new concept to achieve facile, cost effective, green, and scalable synthesis of Si/carbon nanohybrid anode is proposed. By reducing Si particle size to the range below 10 nm and homogeneous embedding of Si nanoparticles into carbon buffer matrix, the volume change and associated stress can be effectively accommodated to improve the cyclability of the LIBs.

Scalable synthesis of silicon

leads to homogeneous silicon and carbon coating. f,g, SEM images of cross-sectional SGC hybrids (f) and silicon nanolayer (g) on the graphite surface. h, STEM images for elemental mapping by energy-dispersive spectroscopy. i, High-resolution TEM image at the interfacial region of the SGC hybrid, with

Scalable synthesis of silicon

Existing anode technologies are approaching their limits, and silicon is recognized as a potential alternative due to its high specific capacity and abundance. However, to date the commercial use of silicon has not satisfied electrode calendering with limited binder content comparable to commercial graphite anodes for high energy density. Here we demonstrate the feasibility of a next

Graphene production techniques

A rapidly increasing list of graphene production techniques have been developed to enable graphene's use in commercial applications. Isolated 2D crystals cannot be grown via chemical synthesis beyond small sizes even in principle, because the rapid growth of phonon density with increasing lateral size forces 2D crystallites to bend into the third dimension.

Energies

Novel core-shell structure hard carbon/Si-carbon composites are prepared, and their electrochemical performances as an anode material for lithium-ion batteries are reported. Three different types of shell coating are applied using Si-carbon, Si-carbon black-carbon and Si-carbon black-carbon/graphite nanosheets. It appears that the use of n-Si/carbon black/carbon composite particles in place of

Silicon/Carbon Nano

To tackle these critical problems, a new concept to achieve facile, cost effective, green, and scalable synthesis of Si/carbon nanohybrid anode is proposed. By reducing Si particle size to the range below 10 nm and homogeneous embedding of Si nanoparticles into carbon buffer matrix, the volume change and associated stress can be effectively accommodated to improve the cyclability of the LIBs.

Research progress on Si/C composites as anode for lithium

Abstract: Silicon based anode materials with high specific capacity, low voltage plateau, environmental friendliness and abundant resources, are expected to replace graphite for the next generation lithium-ion batteries with high energy density. However, the

Graphene on the Verge of Delivering on its Potential

The approach uses a modified deposition method that removes the need for the transfer processes commonly applied in most large area graphene synthesis methods. Therefore, the graphene can be produced in a uniform, single layer directly on a wide range of substrates, including silicon, silicon carbide, sapphire, gallium nitride, and other semiconductor-compatible substrates.

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