상세 보기
- Kim, Icpyo;
- Kweon, Jeong-Hui;
- Park, Jinyoung;
- Kim, Ki-Won;
- Ahn, In-Shup;
- ... Cho, Kwon-Koo;
- ... Wang, Guoxiu;
- ... Ryu, Ho-Suk;
- ... Ahn, Hyo-Jun;
- 외 1명
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0초록
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.
키워드
- 제목
- Effect of sodium salt in poly(ethylene oxide) electrolyte on initial discharge capacity of Na/poly(ethylene oxide)/S battery
- 저자
- 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
- 발행일
- 2016-08
- 유형
- Article
- 권
- 17
- 호
- 8
- 페이지
- 799 ~ 802