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Anti-pulverization intermetallic Fe–Sn anchored on N-doped carbon anode boosted superior power and stable lithium storage
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Chen, Ming, Yang, Ke, Dong, Boxu, Zhou, Qinnan, Zhang, Yuchi, Zhu, Yuedan, Iqbal, Asma, Liu, Xuejiao, Yan, Changyu, Low, CheeTongJohn and Qian, Xuefeng (2023) Anti-pulverization intermetallic Fe–Sn anchored on N-doped carbon anode boosted superior power and stable lithium storage. Journal of Power Sources, 553 . 232272. doi:10.1016/j.jpowsour.2022.232272 ISSN 0378-7753.
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Official URL: https://doi.org/10.1016/j.jpowsour.2022.232272
Abstract
Tin (Sn) anode suffers from considerable volume deformation, generating vast dilatation-induced stresses leading to pulverization for lithium-ion batteries (LIBs). Herein, the Sn–Fe–C composite anode material with a jujube cake-like structure where Sn/FeSn2 metalcore anchored on an N-doped carbon matrix is constructed. During the lithiation process, the intermetallic Fe–Sn (FeSn2) generates Fe nanoparticles, which are uniformly distributed in the Sn matrix to relieve internal stress and create a conductive network, thus enhancing electron conduction and ion diffusion kinetics. In addition, the N-doped carbon matrix maintains the material structural integrity and improves overall conductivity. Consequently, the Sn–Fe–C anode delivers a high reversible 400 mAh g−1 over 1100 cycles at 5 A g−1 (capacity retention of up to 90.9%) and rate performance (237 mAh g−1 at 20 A g−1). Sn–Fe–C anode pairs with porous carbon (PC) cathode to assemble lithium-ion capacitors (Sn–Fe–C || PC LICs), which show a maximum energy density of 203.8 Wh kg−1, an excellent power density of 23925.3 W kg−1, and energy retention rate of 72.9% after 18,000 cycles at 1 A g−1. The Sn–Fe–C material as an anti-pulverization anode could be a potential application for high-performance LIBs and LICs in the future.
| Item Type: | Journal Article | ||||||||||||||||||||||||
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||||||||||||||
| SWORD Depositor: | Library Publications Router | ||||||||||||||||||||||||
| Journal or Publication Title: | Journal of Power Sources | ||||||||||||||||||||||||
| Publisher: | Elsevier S.A. | ||||||||||||||||||||||||
| ISSN: | 0378-7753 | ||||||||||||||||||||||||
| Official Date: | 1 January 2023 | ||||||||||||||||||||||||
| Dates: |
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| Volume: | 553 | ||||||||||||||||||||||||
| Number of Pages: | 8 | ||||||||||||||||||||||||
| Article Number: | 232272 | ||||||||||||||||||||||||
| DOI: | 10.1016/j.jpowsour.2022.232272 | ||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||||||||
| Copyright Holders: | Elsevier B.V. | ||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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