• 제목/요약/키워드: Lithium Electrode

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Fabrication of petroleum pitch/polymer composite binder for anode material in lithium-ion battery (리튬이온 배터리용 음극 합금/폴리머 복합체 바인더 패브릭)

  • Hyeon Taek Jeong
    • Journal of the Korean Applied Science and Technology
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    • v.40 no.6
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    • pp.1191-1200
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    • 2023

  • The lithium ion battery has applied to various fields of energy storage systems such as electric vehicle and potable electronic devices in terms of high energy density and long-life cycle. Despite of various research on the electrode and electrolyte materials, there is a lack of research for investigating of the binding materials to replace polymer based binder. In this study, we have investigated petroleum pitch/polymer composite with various ratios between petroleum pitch and polymer in order to optimize the electrochemical and physical performance of the lithium-ion battery based on petroleum pitch/polymer composite binder. The electrochemical and physical performances of the petroleum pitch/polymer composite binder based lithium-ion battery were evaluated by using a charge/discharge test, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and universal testing machine (UTM). As a result, the petroleum pitch(MP-50)/polymer(PVDF) composite (5:5 wt % ratio) binder based lithium-ion battery showed 1.29 gf mm-1 of adhesion strength with 144 mAh g-1 of specific dis-charge capacity and 93.1 % of initial coulombic efficiency(ICE) value.

  • https://doi.org/10.12925/jkocs.2023.40.6.1191 인용 PDF

Electrical Properties of Traveling-wave Coplanar Waveguide Transmission Line with a Abruptly broken Input-Output-taper for $LiNbO_3$Optical Modulator Electrode (급격히 꺾인 Taper를 갖는 Traveling-wave Coplanar Waveguide형 $LiNbO_34$전기광학변조기 전송선로의 전기적 특성)

  • 정운조;김성구
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.13 no.12
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    • pp.1051-1057
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    • 2000

  • A traveling-wave CPW(coplanar waveguide) electrode with abruptly broken input/output-taper for LiNbO$_3$optical modulator was designed and fabricated. The electrical characteristics of traveling-wave electrode on z-cut LiNbO$_3$crystal with SiO$_2$buffer layers were measured by network analyzer. To confirm the possibility of the electro-optic modulator electrode, detailed calculations of the impedance, microwave effective index and attenuation constants are presented as a function of the microwave electrode thickness, but the buffer layer thickness is fixed as 1${\mu}{\textrm}{m}$. These characteristics are discussed from the viewpoint of the device optimization and are expected to be design guides for the LiNbO$_3$modulator’s electrodes.

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