Cited 8 time in webofscience Cited 8 time in scopus

Ag/MnO2 Composite Sheath-Core Structured Yarn Supercapacitors

Title
Ag/MnO2 Composite Sheath-Core Structured Yarn Supercapacitors
Authors
Kim, Ji HwanChoi, ChangsoonLee, Jae Myeongde Andrade, Monica JungBaughman, Ray H.Kim, Seon Jeong
DGIST Authors
Choi, Changsoon
Issue Date
2018-09
Citation
Scientific Reports, 8
Type
Article
Article Type
Article
Keywords
ELECTROCHEMICAL ENERGY-STORAGECARBON NANOTUBE YARNSOLID-STATEFLEXIBLE SUPERCAPACITORSMICRO-SUPERCAPACITORELECTRONIC TEXTILESFIBERSCAPACITORHYBRIDSYSTEM
ISSN
2045-2322
Abstract
One-dimensional (1D) yarn or fiber-based supercapacitors that have small diameter, volume and high mechanical strength are needed due to the demands on power source for wearable electronics, micro-devices, and implantable medical devices. The composite sheath is fabricated on a commercially available CNT yarn substrate by alternating depositions of MnO2 and Ag layers. Synergistic effect of high loading level of pseudocapacitive MnO2 and reasonably improved rate-capability are achieved. In the composite sheath, the interconnected networks provide electrical contact between MnO2 aggregates and adjacent Ag layer. The conductive Ag inter layers shorten the solid-state charge diffusion length in the MnO2. Moreover, generated electrons during the charge/discharge process can be collected rapidly by the adjacent Ag layer, therefore, the great extents of MnO2 could be loaded onto the surface of CNT core fiber electrode without a significant rate-capability degradation. Due to the high MnO2 loading level, the composite sheath-core yarn supercapacitor showed excellent specific areal capacitance (322.2 mF/cm2) and according energy density (18.3 µWh/cm2). © 2018, The Author(s).
URI
http://hdl.handle.net/20.500.11750/9346
DOI
10.1038/s41598-018-31611-2
Publisher
Nature Publishing Group
Related Researcher
Files:
There are no files associated with this item.
Collection:
Smart Textile Convergence Research Group1. Journal Articles


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