α-Fe2O3 multi-shelled hollow microspheres for lithium ion battery anodes with superior capacity and charge retention
Article
Article Title | α-Fe2O3 multi-shelled hollow microspheres for lithium ion battery anodes with superior capacity and charge retention |
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ERA Journal ID | 40780 |
Article Category | Article |
Authors | Xu, Simeng (Author), Hessel, Colin M. (Author), Ren, Hao (Author), Yu, Ranbo (Author), Jin, Quan (Author), Yang, Mei (Author), Zhao, Huijun (Author) and Wang, Dan (Author) |
Journal Title | Energy and Environmental Science |
Journal Citation | 7 (2), pp. 632-637 |
Number of Pages | 6 |
Year | 2014 |
Publisher | The Royal Society of Chemistry |
Place of Publication | United Kingdom |
ISSN | 1754-5692 |
1754-5706 | |
Digital Object Identifier (DOI) | https://doi.org/10.1039/c3ee43319f |
Web Address (URL) | http://pubs.rsc.org/en/Content/ArticleLanding/2014/EE/C3EE43319F#!divAbstract |
Abstract | Multi-shelled α-Fe2O3 hollow microspheres were synthesized using carbonaceous microsphere sacrificial templates and utilized for high capacity anode materials in lithium ion batteries (LIBs). Structural aspects including the shell thickness, number of internal multi-shells, and shell porosity were controlled by synthesis parameters to produce hollow microspheres with maximum lithium capacity and stable cycling behavior. Thin, porous, hollow microspheres with three concentric multi-shells showed the best cycling performance, demonstrating excellent stability and a reversible capacity of up to 1702 mA h g−1 at a current density of 50 mA g−1. The electrode performance is attributed to the large specific surface area and enhanced volumetric capacity of the multi-shelled hollow spheres that provide maximum lithium storage, while the porous thin shells facilitate rapid electrochemical kinetics and buffer mechanical stresses that accompany volume changes during de/lithiation. |
Keywords | cycling performance; electrochemical kinetics; electrode performance; large specific surface areas; lithium-ion battery anodes; reversible capacity; sacrificial templates; synthesis parameters; structural members and shapes; strength of building materials; mechanical properties; alkali metals; data storage, equipment and techniques |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
340604. Electrochemistry | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Science and Technology Beijing, China |
Chinese Academy of Sciences, China | |
Griffith University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4278/-fe2o3-multi-shelled-hollow-microspheres-for-lithium-ion-battery-anodes-with-superior-capacity-and-charge-retention
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