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Title: Nanocrystal Conversion-Assisted Design of Sn–Fe Alloy with a Core–Shell Structure as High-Performance Anodes for Lithium-Ion Batteries

Abstract

Sn-based alloy materials are strong candidates to replace graphitic carbon as the anode for the next generation lithium-ion batteries because of their much higher gravimetric and volumetric capacity. A series of nanosize Sn yFe alloys derived from the chemical transformation of preformed Sn nanoparticles as templates have been synthesized and characterized. An optimized Sn 5Fe/Sn 2Fe anode with a core–shell structure delivered 541 mAh·g –1 after 200 cycles at the C/2 rate, retaining close to 100% of the initial capacity. Its volumetric capacity is double that of commercial graphitic carbon. It also has an excellent rate performance, delivering 94.8, 84.3, 72.1, and 58.2% of the 0.1 C capacity (679.8 mAh/g) at 0.2, 0.5, 1 and 2 C, respectively. The capacity is recovered upon lowering the rate. The exceptional cycling/rate capability and higher gravimetric/volumetric capacity make the Sn yFe alloy a potential candidate as the anode in lithium-ion batteries. The understanding of Sn yFe alloys from this work also provides insight for designing other Sn–M (M = Co, Ni, Cu, Mn, etc.) system.

Authors:
 [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Binghamton Univ., NY (United States)
Publication Date:
Research Org.:
Binghamton Univ., NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1497932
Alternate Identifier(s):
OSTI ID: 1508832
Grant/Contract Number:  
EE0006852; EE0007765
Resource Type:
Published Article
Journal Name:
ACS Omega
Additional Journal Information:
Journal Volume: 4; Journal Issue: 3; Journal ID: ISSN 2470-1343
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Xin, Fengxia, Zhou, Hui, Yin, Qiyue, Shi, Yong, Omenya, Fredrick, Zhou, Guangwen, and Whittingham, M. Stanley. Nanocrystal Conversion-Assisted Design of Sn–Fe Alloy with a Core–Shell Structure as High-Performance Anodes for Lithium-Ion Batteries. United States: N. p., 2019. Web. doi:10.1021/acsomega.8b03637.
Xin, Fengxia, Zhou, Hui, Yin, Qiyue, Shi, Yong, Omenya, Fredrick, Zhou, Guangwen, & Whittingham, M. Stanley. Nanocrystal Conversion-Assisted Design of Sn–Fe Alloy with a Core–Shell Structure as High-Performance Anodes for Lithium-Ion Batteries. United States. doi:10.1021/acsomega.8b03637.
Xin, Fengxia, Zhou, Hui, Yin, Qiyue, Shi, Yong, Omenya, Fredrick, Zhou, Guangwen, and Whittingham, M. Stanley. Tue . "Nanocrystal Conversion-Assisted Design of Sn–Fe Alloy with a Core–Shell Structure as High-Performance Anodes for Lithium-Ion Batteries". United States. doi:10.1021/acsomega.8b03637.
@article{osti_1497932,
title = {Nanocrystal Conversion-Assisted Design of Sn–Fe Alloy with a Core–Shell Structure as High-Performance Anodes for Lithium-Ion Batteries},
author = {Xin, Fengxia and Zhou, Hui and Yin, Qiyue and Shi, Yong and Omenya, Fredrick and Zhou, Guangwen and Whittingham, M. Stanley},
abstractNote = {Sn-based alloy materials are strong candidates to replace graphitic carbon as the anode for the next generation lithium-ion batteries because of their much higher gravimetric and volumetric capacity. A series of nanosize SnyFe alloys derived from the chemical transformation of preformed Sn nanoparticles as templates have been synthesized and characterized. An optimized Sn5Fe/Sn2Fe anode with a core–shell structure delivered 541 mAh·g–1 after 200 cycles at the C/2 rate, retaining close to 100% of the initial capacity. Its volumetric capacity is double that of commercial graphitic carbon. It also has an excellent rate performance, delivering 94.8, 84.3, 72.1, and 58.2% of the 0.1 C capacity (679.8 mAh/g) at 0.2, 0.5, 1 and 2 C, respectively. The capacity is recovered upon lowering the rate. The exceptional cycling/rate capability and higher gravimetric/volumetric capacity make the SnyFe alloy a potential candidate as the anode in lithium-ion batteries. The understanding of SnyFe alloys from this work also provides insight for designing other Sn–M (M = Co, Ni, Cu, Mn, etc.) system.},
doi = {10.1021/acsomega.8b03637},
journal = {ACS Omega},
number = 3,
volume = 4,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1021/acsomega.8b03637

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