Journal ArticleDOI
Micro-sized Si-C Composite with Interconnected Nanoscale Building Blocks as High-Performance Anodes for Practical Application in Lithium-Ion Batteries
Reads0
Chats0
TLDR
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
Citations
More filters
Journal ArticleDOI
Improved adhesion of cross-linked binder and SiO2-coating enhances structural and cyclic stability of silicon electrodes for lithium-ion batteries
Sun Sen,Donglin He,Ping Li,Liu Ying,Qi Wan,Qiwei Tan,Zhiwei Liu,An Fuqiang,Gaoxiang Gong,Xuanhui Qu +9 more
TL;DR: In this article, a cross-linked polyacrylic acid and glycerol (PAA-GL) binder is synthesized in situ and a surface coating of silicon dioxide is obtained on silicon nanoparticles (Si@SiO2), both of which together construct a strong electrode.
Journal ArticleDOI
Hollow Silicon–Tin Nanospheres Encapsulated by N-Doped Carbon as Anode Materials for Lithium-Ion Batteries
TL;DR: The hollow mesoporous silicon-tin nanohybrids modified through the homogeneous N-doped carbon matrix were purposely designed and triumphantly synthesized as anode materials of high-performance lithi...
Journal ArticleDOI
Rapid fabrication of a novel Sn–Ge alloy: structure–property relationship and its enhanced lithium storage properties
Shufen Fan,Linda Y. Lim,Linda Y. Lim,Yee Yan Tay,Stevin S. Pramana,Xianhong Rui,Majid Kabiri Samani,Qingyu Yan,Beng Kang Tay,Michael F. Toney,Huey Hoon Hng +10 more
TL;DR: In this article, a rapid solidification and high throughput melt spinning process was developed for the fabrication of new Sn-Ge alloys as anodes for high capacity lithium-ion batteries.
Journal ArticleDOI
In situ coating of nitrogen-doped graphene-like nanosheets on silicon as a stable anode for high-performance lithium-ion batteries
Hongwei Mi,Hongwei Mi,Yongliang Li,Peiyang Zhu,Xiaoyan Chai,Lingna Sun,Haitao Zhuo,Qianling Zhang,Chuanxin He,Jianhong Liu,Jianhong Liu +10 more
TL;DR: In this paper, a facile one-step carbon-thermal method was proposed to coat Si nanoparticles with nitrogen-doped (Ndoped) graphene-like nanosheets derived from a liquid polyacrylonitrile (LPAN) precursor.
Journal ArticleDOI
Unique walnut-shaped porous MnO2/C nanospheres with enhanced reaction kinetics for lithium storage with high capacity and superior rate capability
Shaozhuan Huang,Yi Cai,Jun Jin,Jing Liu,Yu Li,Hong-En Wang,Li-Hua Chen,Tawfique Hasan,Bao-Lian Su,Bao-Lian Su,Bao-Lian Su +10 more
TL;DR: Su et al. as discussed by the authors realized a program for Changjiang Scholars and Innovative Research Team (IRT_15R52) of Chinese Ministry of Education, which was realized in the frame of a study of TEM analysis.
References
More filters
Journal ArticleDOI
Building better batteries
TL;DR: Researchers must find a sustainable way of providing the power their modern lifestyles demand to ensure the continued existence of clean energy sources.
Journal ArticleDOI
Nanostructured materials for advanced energy conversion and storage devices
Antonino S. Aricò,Peter G. Bruce,Bruno Scrosati,Jean-Marie Tarascon,Jean-Marie Tarascon,Walter van Schalkwijk +5 more
TL;DR: This review describes some recent developments in the discovery of nanoelectrolytes and nanoeLECTrodes for lithium batteries, fuel cells and supercapacitors and the advantages and disadvantages of the nanoscale in materials design for such devices.
Journal ArticleDOI
High-performance lithium battery anodes using silicon nanowires
Candace K. Chan,Hailin Peng,Gao Liu,Kevin McIlwrath,Xiao Feng Zhang,Robert A. Huggins,Yi Cui +6 more
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.