DataVXChemistry of MaterialsPaper
journal article·2019-05-14

Structural Recovery of Highly Oxidized Single-Walled Carbon Nanotubes Fabricated by Kneading and Electrochemical Applications

Joong Tark Han, Joon Young Cho, Jung Hoon Kim, Jeong In Jang, Jun Suk Kim, Hye Jeong Lee, Jong Hwan Park, Ji Su Chae, Kwang Chul Roh, Wonki Lee, Jun Yeon Hwang, Ho Young Kim, Hee Jin Jeong, Seung Yol Jeong, Geon-Woong Lee

Chemistry of Materials· Volume 31· Issue 9
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Source abstract

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.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Carbon Nanotubes in Composites · Supercapacitor Materials and Fabrication · Graphene research and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Nano Hybrid Technology Research Center, Creative and Fundamental Research Division, Korea Electrotechnology Research Institute (KERI), Changwon 51543, Republic of Korea

Department of Electro-Functionality Materials Engineering, University of Science and Technology (UST), Changwon 51543, Republic of Korea

Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea

Energy Materials Center, Korea Institute of Ceramic Engineering & Technology (KICET), Jinju 52851, Republic of Korea

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju 55324, Republic of Korea

Funding

Ministry of Science, ICT and Future Planning · Korea Electrotechnology Research Institute

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