Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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The Charge-Discharge Performance of $Li/MoS_2$ Battery with liquid Electrolyte of Tetra(ethylene glycol] Dimethyl Ether[TEGDME]

TEGDME 액체 전해질을 사용한 $Li/MoS_2$ 전지의 충.방전 특성

  • Kwon, Jeong-Hui (I-Oabe Center, ReCAPT, School of Materials Science and Engineering) ;
  • Ryu, Ho-Suk (PRC for Nano-Morphic Biological Energy Conversion and Storage) ;
  • Kim, Ki-Won (I-Oabe Center, ReCAPT, School of Materials Science and Engineering) ;
  • Ahn, Jou-Hyeon (Departrnent of Chemical and Biological Engineering, Gyeongsang National University) ;
  • Jeong, Yong-Su (Korea Institute of Materials science) ;
  • Lee, Kun-Hwan (Korea Institute of Materials science) ;
  • Ahn, Hyo-Jun (I-Oabe Center, ReCAPT, School of Materials Science and Engineering)
  • 권정희 (경상대학교 나노.신소재공학과, 아이큐브 사업단) ;
  • 류호석 (경상대학교 PRC-NBECS) ;
  • 김기원 (경상대학교 나노.신소재공학과, 아이큐브 사업단) ;
  • 안주현 (경상대학교 생명화학공학과) ;
  • 정용수 (한국기계연구원) ;
  • 이건환 (한국기계연구원) ;
  • 안효준 (경상대학교 나노.신소재공학과, 아이큐브 사업단)
  • Published : 2009.06.30
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Abstract

We investigated the electrochemical properties of lithium/molybdenum sulfide(Li/MoS$_2$) using tetra (ethylene glycol) dimethyl ether(TEGDME) electrolyte. The Li/TEGDME/MoS$_2$ cell showed the first discharge capacity of 288mAhg$^{-1}$. From the XRD, SEM results of the MOS$_2$ electrode in various cut-off voltage during charge-discharge process, MoS$_2$ partly changed into Li$_2$S and Mo during discharge and Li$_2$S partly recovered into MOS$_2$ and Li during charge. Full charged MOS$_2$ electrode showed lump shape of big size, which might be related to agglomerate of MoS$_2$ particles. Therefore, the degradation might be related to decrease of active material for electrochemical reaction by agglomeration of MOS$_2$.

Keywords

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