• Title/Summary/Keyword: 리튬망간산화물

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Preparation of PVC-LMO Beads Using Dimethyl Sulfoxide Solvent and Adsorption Characteristics of Lithium Ions (다이메틸설폭시화물 용매를 사용한 PVC-LMO 비드의 제조와 리튬 이온 흡착 특성)

  • You, Hae-Na;Lee, Dong-Hwan;Lee, Min-Gyu
    • Clean Technology
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    • v.20 no.2
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    • pp.154-159
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    • 2014

  • In this study, PVC-LMO beads were prepared by immobilizing lithium manganese oxide (LMO) with poly vinyl chloride (PVC) diluted in dimethyl sulfoxide (DMSO) solvent on behalf of N-methyl-2-pyrrolidone (NMP). XRD analysis confirmed that LMO was immobilized well in PVC-LMO beads. The diameter of PVC-LMO beads synthesized by DMSO was about 4 mm. The adsorption experiments of lithium ions by PVC-LMO beads were conducted batchwise. The maximum adsorption capacity obtained from Langmuir model was 21.31 mg/g. The adsorption characteristics of lithium ions by PVC-LMO beads was well described by the pseudo-second-order kinetic model. It was considered that the internal diffusion was the rate controlling step.

  • https://doi.org/10.7464/ksct.2014.20.2.154 인용 PDF KSCI

Electrochemical Properties of Carbon/Manganese Oxide Composite Air Cathode for Lithium-Air Batteries (리튬-공기전지용 탄소/망간산화물 복합구조 공기극의 전기화학적 특성)

  • Lee, Sun-Young;Cha, Eun-Hee;Mho, Sun-Il;Ju, Jeh-Beck;Cho, Won-Il
    • Journal of the Korean Electrochemical Society
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    • v.15 no.3
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    • pp.198-205
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    • 2012

  • Carbon-supported manganese oxide composite were fabricated as an air cathode material for Li-air batteries by hydrothermal method. The composite materials of carbon and manganese oxide were investigated by the implementation of X-ray diffraction, FE-SEM and BET surface area measurer. The manganese oxide synthesized at $170^{\circ}C$ for 12 h has a rod like shape morphology with 40-50 nm long in size. A Lithium-air battery with coin type, of which electrodes are composed of cathode composite materials synthesized $170^{\circ}C$-12 h and lithium metal anode, reveals its first discharge capacity of 3,852 mAh/g and four discharge-charge cycles.

  • https://doi.org/10.5229/JKES.2012.15.3.198 인용 PDF KSCI