Journal ArticleDOI
Si-Encapsulating Hollow Carbon Electrodes via Electroless Etching for Lithium-Ion Batteries
Yuwon Park,Nam-Soon Choi,Sangjin Park,Seung Hee Woo,Soojin Sim,Bo Yun Jang,Seung M. Oh,Soojin Park,Jaephil Cho,Kyu Tae Lee +9 more
Reads0
Chats0
TLDR
In this article, the void structure in Si-encapsulating hollow carbons is optimized in order to minimize the volume expansion of Si-based anodes and improve electrochemical performance, which is more advanced due to the improved electrical contact between carbon and Si.Abstract:
Remarkable improvements in the electrochemical performance of Si materials for Li-ion batteries have been recently achieved, but the inherent volume change of Si still induces electrode expansion and external cell deformation. Here, the void structure in Si-encapsulating hollow carbons is optimized in order to minimize the volume expansion of Si-based anodes and improve electrochemical performance. When compared to chemical etching, the hollow structure is achieved via electroless etching is more advanced due to the improved electrical contact between carbon and Si. Despite the very thick electrodes (30 ∼ 40 μm), this results in better cycle and rate performances including little capacity fading over 50 cycles and 1100 mA h g−1 at 2C rate. Also, an in situ dilatometer technique is used to perform a comprehensive study of electrode thickness change, and Si-encapsulating hollow carbon mitigates the volume change of electrodes by adoption of void space, resulting in a small volume increase of 18% after full lithiation corresponding with a reversible capacity of about 2000 mA h g−1.read more
Citations
More filters
Journal ArticleDOI
Li-ion battery materials: present and future
TL;DR: In this article, a review of the key technological developments and scientific challenges for a broad range of Li-ion battery electrodes is presented, and the potential/capacity plots are used to compare many families of suitable materials.
Journal ArticleDOI
A pomegranate-inspired nanoscale design for large-volume-change lithium battery anodes
TL;DR: The design is inspired by the structure of a pomegranate, where single silicon nanoparticles are encapsulated by a conductive carbon layer that leaves enough room for expansion and contraction following lithiation and delithiation, resulting in superior cyclability and Coulombic efficiency.
Journal ArticleDOI
Challenges and Recent Progress in the Development of Si Anodes for Lithium-Ion Battery
TL;DR: In this paper, the authors focus on the challenges and recent progress in the development of Si anodes for lithium-ion battery, including initial Coulombic efficiency, areal capacity, and material cost, which call for more research effort and provide a bright prospect for the widespread applications of silicon anodes in the future lithium ion batteries.
Journal ArticleDOI
High‐Capacity Anode Materials for Lithium‐Ion Batteries: Choice of Elements and Structures for Active Particles
Naoki Nitta,Gleb Yushin +1 more
TL;DR: In this paper, the periodic table is used to explore how the choice of anode material affects rate performance, cycle stability, Li-ion insertion/extraction potentials, voltage hysteresis, volumetric and specific capacities, and other critical parameters.
Journal ArticleDOI
High-Capacity Anode Materials for Sodium-Ion Batteries
TL;DR: In this paper, a comprehensive overview of selected anode materials with high reversible capacities that can increase the energy density of Na-ion batteries is presented with a view to suggesting promising strategies for improving their electrochemical performance.
References
More filters
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
Stable cycling of double-walled silicon nanotube battery anodes through solid-electrolyte interphase control
Hui Wu,Gerentt Chan,Jang Wook Choi,Jang Wook Choi,Ill Ryu,Yan Yao,Matthew T. McDowell,Seok Woo Lee,Ariel Jackson,Yuan Yang,Liangbing Hu,Yi Cui,Yi Cui +12 more
TL;DR: It is shown that anodes consisting of an active silicon nanotube surrounded by an ion-permeable silicon oxide shell can cycle over 6,000 times in half cells while retaining more than 85% of their initial capacity.
Journal ArticleDOI
Electrochemical lithiation of tin and tin-based intermetallics and composites
Martin Winter,Jürgen Besenhard +1 more
TL;DR: In this article, an overview on lithium alloys and lithium alloying metals for use as anodes in ambient temperature rechargeable lithium batteries is given, with a brief introduction about advantages and drawbacks of lithium alloy anodes and a chronological review of their development.
Journal ArticleDOI
A Major Constituent of Brown Algae for Use in High-Capacity Li-Ion Batteries
Igor Kovalenko,Bogdan Zdyrko,Alexandre Magasinski,Benjamin Hertzberg,Zoran Milicev,Ruslan Burtovyy,Igor Luzinov,Gleb Yushin +7 more
TL;DR: It is shown that mixing Si nanopowder with alginate, a natural polysaccharide extracted from brown algae, yields a stable battery anode possessing reversible capacity eight times higher than that of the state-of-the-art graphitic anodes.
Journal ArticleDOI
Silicon Nanotube Battery Anodes
TL;DR: The capacity in a Li-ion full cell consisting of a cathode of LiCoO2 and anode of Si nanotubes demonstrates a 10 times higher capacity than commercially available graphite even after 200 cycles.