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Tin‐containing graphite for sodium‐ion batteries and hybrid capacitors
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Palaniselvam, Thangavelu, Babu, Binson, Moon, Hyein, Hasa, Ivana, Santhosha, Aggunda L., Goktas, Mustafa, Sun, Ya‐Nan, Zhao, Li, Han, Bao‐Hang, Passerini, Stefano, Balducci, Andrea and Adelhelm, Philipp (2021) Tin‐containing graphite for sodium‐ion batteries and hybrid capacitors. Batteries & Supercaps, 4 (1). pp. 173-182. doi:10.1002/batt.202000196 ISSN 2566-6223.
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Batteries Supercaps - 2020 - Palaniselvam - Tin‐Containing Graphite for Sodium‐Ion Batteries and Hybrid Capacitors.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (3767Kb) | Preview |
Official URL: https://doi.org/10.1002/batt.202000196
Abstract
The limited Na-storage capacity of graphite anodes for sodium-ion batteries (∼110 mAh g−1) is significantly enhanced by the incorporation of nanosized Sn (17 wt%). The composite (SntGraphite), prepared by simple annealing of graphite with SnCl2, shows a specific capacity of 223 mAh g−1 (at 50 mA g−1) combined with excellent cycle life (i. e., 96 % of capacity retention after 2,200 cycles at 1 A g−1) and initial Coulomb efficiency (90 %). The combined storage of sodium in graphite (by solvent co-intercalation) and Sn (by alloy formation) is followed by in situ X-ray diffraction and in situ electrochemical dilatometry (ECD). While the additional tin almost doubles the electrode capacity, its contribution to the electrode expansion (∼3 %) is surprisingly small. The use of SntGraphite as anode for sodium-ion hybrid capacitors with activated carbon as cathode provides a maximum energy and power density of ∼93 Wh kg−1 and 7.8 kW kg−1, with a capacity retention of ∼80 % after 8,000 cycles.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Sodium ion batteries, Sodium ion batteries -- Materials, Sodium ion batteries -- Design and construction, Anodes, Capacitors, Graphite, Tin, Tin alloys | ||||||||||||||||||
Journal or Publication Title: | Batteries & Supercaps | ||||||||||||||||||
Publisher: | Wiley | ||||||||||||||||||
ISSN: | 2566-6223 | ||||||||||||||||||
Official Date: | 5 January 2021 | ||||||||||||||||||
Dates: |
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Volume: | 4 | ||||||||||||||||||
Number: | 1 | ||||||||||||||||||
Page Range: | pp. 173-182 | ||||||||||||||||||
DOI: | 10.1002/batt.202000196 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Date of first compliant deposit: | 22 March 2023 | ||||||||||||||||||
Date of first compliant Open Access: | 22 March 2023 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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