Three-dimensional hollow fiber type of carbon nanotube electrode for enhanced ion adsorption capacityopen access
- Authors
- Lee, Mi-Young; Kim, Heeyoung; Kim, Jong-Oh; Kang, Seoktae
- Issue Date
- Sep-2017
- Publisher
- DESALINATION PUBL
- Keywords
- Carbon nanotubes; Three-dimensional electrode; Hollow fiber type of carbon nanotube network; Capacitive deionization
- Citation
- DESALINATION AND WATER TREATMENT, v.90, pp.46 - 53
- Indexed
- SCIE
SCOPUS
- Journal Title
- DESALINATION AND WATER TREATMENT
- Volume
- 90
- Start Page
- 46
- End Page
- 53
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/3497
- DOI
- 10.5004/dwt.2017.21185
- ISSN
- 1944-3994
- Abstract
- In this study, a hollow fiber type of carbon nanotube (HF-CNT) network was fabricated as an electrode material for the improved ion removal in capacitive deionization (CDI). The Raman spectrum proved that the HF-CNT electrode synthesized by wet spinning and subsequent calcination techniques was composed of a porous CNT network. The Brunauer-Emmett-Teller surface area of the HF-CNT was 55.6 m(/)(2)g, and specific capacitance was 23.8 F/g with excellent electrical stability in repeated current-voltage cycling. Accordingly, the HF-CNT electrode showed considerable electrosorption capacity of 58.2 mg/g (18.9 mg/cm(3)) in an NaCl concentration of 500 mg/L at 1.2 V. The excellent electrochemical properties of the HF-CNT could be attributed to reduced resistance for ion transport and adsorption by its unique structure. In this study, the three-dimensional HF-CNT was confirmed as a new type of electrode in CDI, with excellent durability and high ion adsorption capacity.
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