Journal ArticleDOI
Micro-sized Si-C Composite with Interconnected Nanoscale Building Blocks as High-Performance Anodes for Practical Application in Lithium-Ion Batteries
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In this paper, a Si-C nanocomposites (e.g., nanowires, nanotubes, or nanoparticles) has been used to improve the capacity and cycling stability of high-energy-density lithium-ion batteries.Abstract:
The emerging markets of electric vehicles (EV) and plug-in hybrid electric vehicles (PHEV) generate a tremendous demand for low-cost lithium-ion batteries (LIBs) with high energy and power densities and long cycling life. [ 1–4 ] The development of such LIBs requires development of low cost, high energy-density cathode and anode materials. Conventional anode materials in commercial LIBs are primarily synthetic graphite-based materials with a capacity of ∼ 370 mAh/g. [ 5 ] Improvements in anode performance, particularly in anode capacity, are essential to achieving high energy densities in LIBs for EV and PHEV applications. Silicon has been intensively pursued as the most promising anode material for high-energy-density LIBs because of its high specifi c capacity ( > 3500 mAh/g) and abundance. [ 6 ] Despite its high capacity, Si suffers from fast capacity fading caused by its large volume change ( > 300%) during lithiation/delithiation and the serious issues stemming from this volume change, e.g., unstable solid electrolyte interphase (SEI) and disintegration (cracking and crumbling) of the electrode structure. [ 7 , 8 ] The development of Si-C nanocomposites (e.g., nanowires, nanotubes, or nanoparticles) has been widely studied. [ 9–18 ] These nanocomposites proved to be an effective method of improving capacity and cycling stability, since nano-sized Si can alleviate fracture during volume changes and the contact between Si and carbon can maintain electrical contact and improve conductivity of the nanocomposites. However, practical application of nano-sized Si materials in LIBs is diffi cult. First, achieving a high tap density is important for fabrication of high-energy LIBs for EVs and PHEVs, because it offers a high volumetric energy density. Unfortunately, the tap density of nano-sized materials is generally low, which in turn holds down their volumetric capacity. [ 19 ] Furthermore, preparation of nano-sized Si either requires chemical/physical vapor deposition or involves complicated processes, leading to costly, low-yield synthesis that is diffi cult to scale up to practical levels. [ 20–22 ] To date, the abundance of Si has not been fully capitalized upon due to lackread more
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Journal ArticleDOI
Interpenetrated Gel Polymer Binder for High-Performance Silicon Anodes in Lithium-ion Batteries
Jiangxuan Song,Mingjiong Zhou,Mingjiong Zhou,Ran Yi,Terrence Xu,Mikhail L. Gordin,Duihai Tang,Zhaoxin Yu,Michael Regula,Donghai Wang +9 more
TL;DR: In this article, an interpenetrated gel polymer binder for high-performance silicon anodes is created through in-situ crosslinking of water-soluble poly(acrylic acid) (PAA) and polyvinyl alcohol (PVA) precursors.
Journal ArticleDOI
Nonfilling Carbon Coating of Porous Silicon Micrometer-Sized Particles for High-Performance Lithium Battery Anodes
TL;DR: A nonfilling carbon-coated porous silicon microparticle (nC-pSiMP) that contains accurate void space to accommodate Si expansion while not losing packing density, which allows for a high volumetric capacity and simple and scalable production.
Journal ArticleDOI
Surface and Interface Engineering of Silicon-Based Anode Materials for Lithium-Ion Batteries
Wei Luo,Xinqi Chen,Xinqi Chen,Yuan Xia,Chen Miao,Lianjun Wang,Qingqing Wang,Wei Li,Jianping Yang +8 more
TL;DR: In this paper, the recent progress in surface and interface engineering of silicon-based anode materials such as coreshell, yolk-shell, sandwiched structures and their applications in lithium-ion batteries are reviewed.
Journal ArticleDOI
Solution combustion synthesis of metal oxide nanomaterials for energy storage and conversion
TL;DR: This review summarizes the synthesis of various metal oxide nanomaterials and their applications for energy conversion and storage, including lithium-ion batteries, supercapacitors, hydrogen and methane production, fuel cells and solar cells, and some novel concepts such as reverse support combustion, self-combustion of ionic liquids, and creation of oxygen vacancies are presented.
Interpenetrated Gel Polymer Binder for High Performance Silicon Anodes in Lithium-Ion Batteries
TL;DR: In this paper, an interpenetrated gel polymer binder for high-performance silicon anodes is created through in-situ crosslinking of water-soluble poly(acrylic acid) (PAA) and polyvinyl alcohol (PVA) precursors.
References
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High-performance lithium battery anodes using silicon nanowires
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TL;DR: The theoretical charge capacity for silicon nanowire battery electrodes is achieved and maintained a discharge capacity close to 75% of this maximum, with little fading during cycling.
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Lithium Batteries and Cathode Materials
TL;DR: This paper will describe lithium batteries in more detail, building an overall foundation for the papers that follow which describe specific components in some depth and usually with an emphasis on the materials behavior.
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Battery materials for ultrafast charging and discharging
Byoungwoo Kang,Gerbrand Ceder +1 more
TL;DR: It is shown that batteries which obtain high energy density by storing charge in the bulk of a material can also achieve ultrahigh discharge rates, comparable to those of supercapacitors.