Effect of sodium salt in poly(ethylene oxide) electrolyte on initial discharge capacity of Na/poly(ethylene oxide)/S battery
- Authors
- Kim, Icpyo; Kweon, Jeong-Hui; Park, Jinyoung; Kim, Ki-Won; Ahn, In-Shup; Cho, Kwon-Koo; Ahn, Jou-Hyeon; Wang, Guoxiu; Ryu, Ho-Suk; Ahn, Hyo-Jun
- Issue Date
- Aug-2016
- Publisher
- KOREAN ASSOC CRYSTAL GROWTH, INC
- Keywords
- organic compounds; microstructure; electrochemical properties; ionic conductivity; energy storage
- Citation
- JOURNAL OF CERAMIC PROCESSING RESEARCH, v.17, no.8, pp 799 - 802
- Pages
- 4
- Indexed
- SCI
SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF CERAMIC PROCESSING RESEARCH
- Volume
- 17
- Number
- 8
- Start Page
- 799
- End Page
- 802
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/15350
- ISSN
- 1229-9162
2672-152X
- Abstract
- To investigate the effects of sodium salt in a poly(ethylene oxide) (PEO) electrolyte on the initial discharge properties of a Na/S cell, various concentrations of NaCF3SO3 from 0.1 to 2.0 m were added to the electrolyte. Scanning electron microscopy and differential scanning calorimetry results showed a continuous decrease in the crystallinity of the PEO electrolyte with increasing amounts of sodium salt. The ionic conductivity of the PEO electrolyte at 70 degrees C increased with increasing sodium salt concentration up to 0.33 m, at which point the highest ionic conductivity of 1.732 x 10(-4) S cm(-1) was obtained. However, the ionic conductivity decreased at 2.0 m sodium salt. The same trend was seen in the initial discharge capacity, in that the highest value of 435 mAh g(-1) was achieved at a sodium salt concentration of 0.33 m. These results demonstrate that 0.33 m of sodium salt is the optimum composition for Na/S batteries.
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Collections - 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles

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