Structural recovery of highly oxidized single-walled carbon nanotubes fabricated by kneading and electrochemical applications

Title
Structural recovery of highly oxidized single-walled carbon nanotubes fabricated by kneading and electrochemical applications
Authors
황준연이원기한중탁조준영김정훈장정인김준석이혜정박종환채지수노광철김호영정희진정승렬이건웅
Keywords
CNT; Structure; oxidation; electrochemistry
Issue Date
2019-05
Publisher
Chemistry of materials
Citation
VOL 31, NO 9-3475
Abstract
Harsh oxidation of 1 nm single-walled carbon nanotubes (SWCNTs) can lead to fatal defect structures, which can jeopardize their mechanical and electrical performances. Here, we show the structural recovery of highly oxidized SWCNTs (Ox-SWCNTs), which were rapidly (within 1 h) oxidized by kneading without forming failure-causing defects inspired by flour dough. The rational oxidation of SWCNTs by kneading debundled the SWCNTs and led to obtaining thermodynamically stable SWCNT solutions in water or even in alcohol without dispersant molecules. Importantly, the structure of the Ox-SWCNTs could be recovered by chemical, thermal, photothermal, or solvothermal reduction, enhancing the electrical conductivity of the Ox-SWCNT films from ∼100 to ∼1000 S cm– 1. These Ox-SWCNTs and chemically reduced Ox-SWCNTs showed high performance in supercapacitors and Li-ion batteries as electrochemical conductors, respectively.
URI
http://pubs.kist.re.kr/handle/201004/69493
ISSN
0897-4756
Appears in Collections:
KIST Publication > Article
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