화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.31, No.4, 297-301, July, 2007
Export Citation
Organic Clay가 첨가된 고분자 복합 전해질의 제조 및 전기화학적 성질
Preparation and Electrochemical Properties of Polymeric Composite Electrolytes Containing Organic Clay Materials
김석, 황은주, 이재락, 김형일1, 박수진2, †
  • 한국화학연구원 화학소재연구부
  • 1충남대학교 정밀공업화학과
  • 2인하대학교 화학과
Seok Kim, Eun-Ju Hwang, Jea-Rock Lee, Hyung-Il Kim1, and Soo-Jin Park2, †
  • Advanced Materials Division, Korea Research Institute of Chemical Technology, Yusung, Deajeon 305-600, Korea
  • 1Department of Industrial Chemistry, Chungnam National University, 220, Gung-dong, Yuseong, Daejeon 305-764, Korea
  • 2Department of Chemistry, Inha University, 253, Nam-gu, Incheon 402-751, Korea
E-mail:
초록
본 연구에서는 poly(ethylene oxide)(PEO), 가소제인 ethylene carbonate(EC), 리튬염인 LiClO4 그리고 Na+-MMT/organic MMT를 이용하여 고분자/층상 실리카 나노복합재료(polymer/(layered silicate) nanocomposites, PLSN)를 제조하였으며, organic MMT의 첨가에 따른 고분자 매트릭스에 미치는 영향을 이온전도도를 통하여 관찰하였다. 리튬전지의 전해질로서의 응용을 위해, Na+를 양이온으로 갖는 순수한 MMT(Na+-MMT)를 유기화한 nanoclay(organic-MMT)를 사용하였다. 그 결과, 층간 거리 및 소수성이 증가하며 이와 같은 특성은 PEO와의 나노복합체를 형성할 때 MMT의 박리 거동에 영향을 미치는 것을 확인할 수 있었다. 또한, 이온전도도에서는 organic MMT가 순수한 Na+-MMT보다 우수함을 나타내었으며, methyl dihydrogenated tallow ammonium으로 개질된 MMT(MMT-20A)를 첨가하였을 때 가장 높은 이온전도도를 보였다.
In this work, polymer/(layered silicate) nanocomposites (PLSN) based on poly(ethylene oxide) (PEO), ethylene carbonate (EC) as a plasticizer, lithium salt (LiClO4), and sodium montmorillonite (Na+-MMT) or organic montmorillonite (organic MMT) clay were fabricated. And the effects of organic MMT on the polymer matrix were investigated as a function of ionic conductivity. For the application to electrolytes an Li batteries, polymer electrolytes containing the organic nanoclays were used in this work. As a result, the spacing between layers and hydrophobicity of the organic nanoclays were increased, affecting on the exfoliation behaviors of the MMT layers in clay/PEO nanocomposites. From ion-conductivity results, the organic-MMT showed higher values than those of Na+-MMT, and the MMT-20A sample that was treated by methyl dihydrogenated tallow ammonium, showed the highest conductivity in this system.
Keywords:polymer/(layered silicate) nanocomposites;poly(ethylene oxide);organic montmorillonite;ionic conductivity
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