Fabrication and Characterization of Silicon electrode on Micro-textured PLA/Copper template for lithium secondary batteries
- Fabrication and Characterization of Silicon electrode on Micro-textured PLA/Copper template for lithium secondary batteries
- 류욱연; 김정섭; 이중기
- Micro-textured PLA; Electrical conductivity; ECR-MOCVD; Lithium secondary batteries
- Issue Date
- 2012 한국전지학회 춘계학술대회
- Micro-patterning technique is essential for not only fabricating micro-electronic and display devices but also texturing electrode materials. Meanwhile, photolithography has usually used for this purpose, but it is extremely expensive and generally consumes large amounts of energy and materials. Thus, we are suggesting a simple and economic micro-patterning technique for texturing the electrode of Li-ion secondary battery. We used a mixture of good and poor solvents in order to control micro-textured of Poly lactic acid (PLA) surface, which was also characterized by polarizing microscope (POM) and scanning electron microscopy (SEM). And then the micro-textured PLA was used as a template for the deposition of silicon film through using Electron Cyclotron Resonance-Chemical Vapor Deposition (ECR-CVD). Electrochemical impedance spectroscopy and cyclic voltammetry were used to characterize the films. As a result of this experiment, electric resistance at interface can be reduced through uniform micro-texturing of silicone electrode on Cu electron collector. Moreover, reaction rate can be increased due to uniform electric field through the electrode. Therefore, this method is well repeatable, low-cost and has potential for practical application. The significance of this process also lies in that it will greatly broaden the range of electrode materials.
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