A Free Volume-Based Viscoplastic Model for Amorphous Silicon Electrode of Lithium-Ion Battery …
Lithiated Si during electrochemical cycling is present in amorphous phases with possible chemical formulas of Li 12 Si 7, Li 7 Si 3, Li1 3 Si 4, and Li 22 Si 5. 19 The viscoplastic constitutive relationships used for the plastic flow of lithiated Si by Cui et al. 10 and Zhao et al. 8 do not consider the fundamental mechanisms controlling the plastic …
Electrochemical characteristics of amorphous silicon …
Electrochemical characteristics of amorphous silicon carbide film as a lithium-ion battery anode† X. D. Huang * a, F. Zhang a, X. F. Gan a, Q. A. Huang a, J. Z. Yang * b, P. T. Lai c and W. M. Tang * d a Key Laboratory …
Crystalline-amorphous core-shell silicon nanowires for high capacity and high current battery electrodes …
Silicon is an attractive alloy-type anode material for lithium ion batteries because of its highest known capacity (4200 mAh/g). However silicon''s large volume change upon lithium insertion and extraction, which causes pulverization and capacity fading, has limited its applications. Designing nanosc …
While nanostructural engineering holds promise for improving the stability of high-capacity silicon (Si) anodes in lithium-ion batteries (LIBs), challenges like complex …
There are three types of solar panels that are widely available for use in photovoltaic systems, (1) monocrystalline, (2) polycrystalline, and (3) amorphous thin-film. Each type of panel has its advantages and disadvantages. The primary differences between these
Silicon/Graphite/Amorphous Carbon Composites as Anode …
5 · Silicon/Graphite/Amorphous Carbon Composites as Anode Materials for Lithium-Ion Battery with Enhanced Electrochemical Performances. ... and the intersection with …
Amorphous silicon dioxide-based composites for high-performance Li-ion battery …
To design high performance SiO 2-based anodes for Li-ion batteries (LIBs), an amorphous SiO 2-FeSi-graphite (a-SiO 2 /FeSi/G) composite was synthesized by a simple solid state synthetic method using SiO, Fe, and graphite powders. The a-SiO 2 /FeSi/G composite was comprised of well dispersed amorphous SiO 2 and tiny (5–10 nm …
23 · Amorphous Silicon (a-Si) Amorphous silicon is well-suited for low-light environments due to its ability to absorb light across a broad spectrum, including the visible range. Its performance in diffused light conditions makes it …
Recent advances of silicon-based solid-state lithium-ion batteries ...
The amorphous Si thin-film electrodes were prepared by the plasma-enhanced chemical vapor deposition (PECVD), which can deliver a specific capacity of …
Amorphous silicon honeycombs as a binder/carbon-free, thin-film Li-ion battery …
Amorphous silicon thin films with honeycombed structures have been prepared using a self-assembled monolayer of polystyrene spheres as the template. The as-prepared thin films may serve as a good anode candidate for thin …
Modeling the delamination of amorphous-silicon thin film anode for lithium-ion battery …
Sputter-deposited amorphous silicon thin films on metallic copper current collectors are widely studied as lithium-ion anode systems. Electrochemical results indicate these electrodes exhibit near theoretical capacity for first few cycles; however delamination at the thin film–current collector interface causes rapid capacity fade leading to poor …
Amorphous Materials for Lithium‐Ion and Post‐Lithium‐Ion …
Amorphous silicon nitride (Si 3 N 4) has been used as a functional filler for solid polymer electrolytes, resulting in excellent battery performance (Figure 6c). This is because its high dielectric constant facilitates the uniform lithium plating via a screening effect.
Amorphous silicon nitride induced high dielectric constant toward long-life solid lithium metal battery …
Amorphous silicon nitride with high dielectric constant enhances the uniform lithium electrodeposition by screening electric potential at high current density. The reduction product from the in-situ reaction between lithium anode and silicon nitride is beneficial to interfacial chemistry, especially the in-situ formed LiSi 2 N 3 shows a better …
Silicon oxides: a promising family of anode materials for lithium-ion batteries …
1. Introduction With high energy density, long lifespan, and environmental friendliness, lithium-ion batteries (LIBs) represent one of the most attractive energy storage devices and are playing more and more important roles in modern society. 1–9 They have already conquered the markets of portable electronics, such as cell phones, laptops, and digital …
Macroporous Directed and Interconnected Carbon Architectures Endow Amorphous Silicon …
Fabricating low-strain and fast-charging silicon-carbon composite anodes is highly desired but remains a huge challenge for lithium-ion batteries. Herein, we report a unique silicon-carbon composite fabricated by uniformly dispersing amorphous Si nanodots (SiNDs) in carbon nanospheres (SiNDs/C) that are welded on the wall of the …
Quantifying lithium loss in amorphous silicon thin-film …
Silicon-based anodes for use in lithium-ion batteries are promising, but their fast degradation is not fully understood. Bao et al. apply gas titration chromatography for trapped Li-Si alloy quantification, …
PHOTOVOLTAIC ENERGY CONVERSION: THEORY, PRESENT AND FUTURE SOLAR CELLS A.E. Dixon, in Solar Energy Conversion II, 1981Amorphous Silicon Cells Amorphous silicon solar cells are normally prepared by glow discharge, sputtering or by evaporation, and because of the methods of preparation, this is a particularly promising …
Constructing Pure Si Anodes for Advanced Lithium Batteries
Subsequently, we outline guidelines for advancing pure silicon anodes to incorporate high mass loading and high energy density. Importantly, these advancements …
Excimer Laser-Annealing of Amorphous Silicon Layers
Modeling the Lithium-Ion Battery Corrosion Protection Battery Modeling Modeling and Simulation in Fuel Cell Development Excimer Laser-Annealing of Amorphous Silicon Layers J. Förster, and H. Vogt Institute of Electronic Components and …
Crystalline-Amorphous Core−Shell Silicon Nanowires for High Capacity and High Current Battery …
Silicon is an attractive alloy-type anode material for lithium ion batteries because of its highest known capacity (4200 mAh/g). However silicon''s large volume change upon lithium insertion and extraction, which causes pulverization and capacity fading, has limited its applications. Designing nanoscale hierarchical structures is a novel …
Experimental Study on Sodiation of Amorphous Silicon for Use as Sodium-Ion Battery …
Experimental Study on Sodiation of Amorphous Silicon for Use as Sodium-Ion Battery Anode Author links open overlay panel Chek-Hai Lim a, Tzu-Yang Huang a, Pei-Sian Shao a, Jen-Hao Chien a, Yu-Ting Weng a, Hsin-Fu …
Experimental Study on Sodiation of Amorphous Silicon for Use as Sodium-Ion Battery …
SEM analysis indicated a wide range of morphologies for the a-Si powders prepared using different synthetic methods.Exposing the lithiated Si powder to ambient air, as in the case of a-Si AQ, helped extracting Li in the form of Li 2 O. Dissolving the resulting Li 2 O in aqueous HCl solution resulted in the formation of porous bulky particles, as …
Redox process and lithiation mechanism of amorphous vanadium-silicon materials as lithium-ion battery …
V 2 O 5-TeO 2 (VT) is a vanadium-based amorphous lithium-ion battery (LIB) anode material that exhibits a high specific energy, but its low-capacity retention rate and low conductivity limit its widespread application. Different amounts of …
Amorphous silicon dioxide-based composites for high …
The amorphous SiO 2-based composite contains dual matrices of inactive FeSi and conducting graphite. • The amorphous SiO 2-based composite is tested for its …
Advances in 3D silicon-based lithium-ion microbatteries
Three-dimensional silicon-based lithium-ion microbatteries have potential use in miniaturized electronics that require independent energy storage. Here, their developments are discussed in terms ...
Fast-charging high-energy lithium-ion batteries via ...
Nature Communications - It is desirable to develop fast-charging batteries retaining high energy density. Here, the authors report a hybrid anode via incorporation of …
Recent advances of silicon-based solid-state lithium-ion batteries
Anode, as one of most crucial components in battery system, plays a key role in electrochemical properties of SSBs, especially to the energy density [7, 16].Graphite is a commercially successful anode active material with a low lithiation potential (∼0.1 V vs. Li/Li +) and excellent cycling stability. ...
Molecular Dynamics Simulations of Interfacial Lithium–Silicon Interdiffusion in Lithium-Ion-Battery …
Since the initial demonstration that amorphous silicon (a-Si) can serve as a high-energy anode for lithium (Li)-ion batteries, substantial efforts have been made to enhance its fast-charging capability. However, the presence of electrolytes, carbon black and binder, combined with the porous microstructure of the electrode makes it difficult to …
Amorphous shear band formation in crystalline Si-anodes governs ...
Herein, we investigate the degradation behaviour of silicon-based anodes in Li-ion batteries in full-cell configuration up to prolonged electrochemical cycling, …
Realistic Atomistic Structure of Amorphous Silicon from Machine …
Amorphous silicon (a-Si) is a fundamental and widely studied noncrystalline material, with applications ranging from photovoltaics and thin-film transistors to electrodes in batteries s atomic-scale structure is traditionally approximated in a Zachariasen-like picture with all atoms in locally "crystal-like", tetrahedral environments, …
