Integrated structure of tin-based anodes enhancing high power density and long cycle life for lithium ion batteries

Chen, Lei and Weng, Yuehua and Meng, Yiming and Dou, Fei and An, Zhongxun and Song, Pingan ORCID: https://orcid.org/0000-0003-1082-652X and Chen, Guorong and Zhang, Dengsong (2020) Integrated structure of tin-based anodes enhancing high power density and long cycle life for lithium ion batteries. ACS Applied Energy Materials, 3 (9). pp. 9337-9347.


Abstract

Tin-based materials have been considered as promising anode materials due to their advantages including high specific capacity, abundant resources, and low toxicity. Unfortunately, it has remained an intractable challenge for reasonable design with improved power density and long-term cycle performance for Li ion batteries because of the huge irreversible volume change during the alloying/dealloying process. Herein, an integrated electrode is designed by in situ growing SnSSe on the graphene sheet, followed by self-assembly and multiscale coated with conductive carbonized polyacrylonitrile. Pleasantly, dynamic evolution of integrated electrode thickness during cycles is in situ monitored by dilatometer, which exhibits effectively suppression of the thickness change to a low level with great reversibility (38.2% expansion ratio) compared with the pristine SnSSe electrode (161.8% expansion ratio) in the first cycle. Moreover, the electrochemical impedance of the integrated electrode shows a great stability after 500 cycles. As a result, the integrated electrode of SnSSe/GR@C shows a great rate performance (518.4 mA h g–1 at 5.0 A g–1) and stable cycle life (capacities retention of 107.1% at 5.0 A g–1 after 850 cycles). This work offers an innovative strategy for the development of high-performance tin-based anodes.


Statistics for USQ ePrint 40991
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 01 Feb 2021 03:11
Last Modified: 10 Feb 2021 05:55
Uncontrolled Keywords: lithium ion battery, tin-based anode, volume expansion, integrated electrode, high power
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
03 Chemical Sciences > 0302 Inorganic Chemistry > 030203 Inorganic Green Chemistry
Fields of Research (2020): 40 ENGINEERING > 4018 Nanotechnology > 401807 Nanomaterials
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280105 Expanding knowledge in the chemical sciences
28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
Identification Number or DOI: doi.org/10.1021/acsaem.0c01688
URI: http://eprints.usq.edu.au/id/eprint/40991

Actions (login required)

View Item Archive Repository Staff Only