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Ultrastretchable carbon nanotube composite electrodes for flexible lithium-ion batteries
Authors
Shoushan Fan
Kaili Jiang
+6 more
Ju Li
Qunqing Li
Yufeng Luo
Jiaping Wang
Hengcai Wu
Yang Yu
Publication date
5 May 2020
Publisher
'Royal Society of Chemistry (RSC)'
Doi
Cite
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
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Last time updated on 19/12/2021