Ultrastretchable carbon nanotube composite electrodes for flexible lithium-ion batteries
Name
C8NR05241G.pdf
Description
Accepted version
Size
1.66 MB
Format
Adobe PDF
Checksum (MD5)
10d30eea17198cf6e88aff59ced2cf94
Author(s)
Yu, Yang
Luo, Yufeng
Wu, Hengcai
Jiang, Kaili
Li, Qunqing
Fan, Shoushan
Li, Ju
Wang, Jiaping
Date Issued
2018
Journal
Nanoscale
Publisher
Royal Society of Chemistry (RSC)
Version
Author's final manuscript
Abstract
© 2018 The Royal Society of Chemistry. Ultra-stretchable carbon nanotube (CNT) composite electrodes for lithium-ion batteries are fabricated by coating CNT films and active material powders on biaxially pre-strained polydimethylsiloxane (PDMS) substrates. The wrinkled structures that form during the pre-straining and release process extend along the strain axis to protect the CNT composite structures from fracture. The CNT composites demonstrate excellent stability and high durability with resistance increase of less than 12% after 2000 cycles at 150% strain. Both CNT/Li4Ti5O12 (LTO) anodes and CNT/Li(Ni1/3Co1/3Mn1/3)O2 (NCM) cathodes maintain excellent electrochemical properties at cyclic 150% strain in different axes. The full lithium-ion battery consisting of the stretchable CNT/LTO anode and CNT/NCM cathode is able to withstand 150% strain in different axes without large decreases in performance. Stretchable batteries fabricated by the scalable, highly efficient, and low-cost biaxial pre-strain process with excellent durability and electrochemical properties will have potential applications in flexible devices.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1039/C8NR05241G
