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    • 7. 发明申请
    • Direct methanol fuel cell having reduced crossover of methanol and comprising a layer of material for controlling the diffusion rate of fuel
    • 直接甲醇燃料电池具有降低的甲醇交换并且包括用于控制燃料扩散速率的材料层
    • US20070026286A1
    • 2007-02-01
    • US11394650
    • 2006-03-31
    • Chan-Hwa ChungWoo-Jae KimHoo-Gon ChoiYoung-Kwan LeeSung-Min ChoJae-Do Nam
    • Chan-Hwa ChungWoo-Jae KimHoo-Gon ChoiYoung-Kwan LeeSung-Min ChoJae-Do Nam
    • H01M8/02H01M8/10
    • H01M8/1011H01M8/04186H01M8/04197H01M8/04208H01M2250/30Y02B90/18Y02E60/523
    • The present invention relates to a direct methanol fuel cell having reduced methanol crossover, which comprises a layer of material for controlling the diffusion rate of fuel. More particularly, it relates to a direct methanol fuel cell in which the material for controlling the diffusion rate of fuel is interposed between an anode and a fuel reservoir or positioned within the fuel reservoir, and thus, the diffusion rate of methanol is reduced even when using high concentration methanol fuel, such that the injected methanol is completely reacted in a catalyst layer so as to fundamentally reduce unreacted methanol, thereby suppressing the methanol crossover phenomenon and exhibiting high power density. In the inventive direct methanol fuel cell, the diffusion rate of fuel is controlled using the fuel diffusion rate-controlling material so as to suppress the methanol crossover phenomenon, thereby increasing energy density and output density. Also, since a high methanol concentration of aqueous methanol fuel is used in the inventive fuel cell, the fuel cell can be used for a long period of time even with a small amount of fuel, and the volume of the fuel reservoir can be reduced, thus making it easy to miniaturize the fuel cell. According to the invention, the performance of all kinds of direct methanol fuel cells can be improved and the fuel cells can be used as electric power sources for small-sized portable electronic products, such as portable phones, PDAs, and notebook computers.
    • 本发明涉及具有降低的甲醇交叉的直接甲醇燃料电池,其包括用于控制燃料扩散速率的材料层。 更具体地说,本发明涉及一种直接甲醇燃料电池,其中用于控制燃料扩散速率的材料介于阳极和燃料容器之间或者位于燃料储存器内,因此即使当甲醇燃料电池的扩散速率 使用高浓度甲醇燃料,使得注入的甲醇在催化剂层中完全反应,从根本上减少未反应的甲醇,从而抑制甲醇交叉现象并表现出高的功率密度。 在本发明的直接甲醇燃料电池中,使用燃料扩散速率控制材料控制燃料的扩散速率,以抑制甲醇交叉现象,从而增加能量密度和输出密度。 此外,由于在本发明的燃料电池中使用高甲醇浓度的甲醇水溶液,所以即使使用少量的燃料也能够长时间使用燃料电池,并且可以减少燃料容积的体积, 从而容易使燃料电池小型化。 根据本发明,可以提高各种直接甲醇燃料电池的性能,并且燃料电池可以用作便携式电话,PDA和笔记本电脑等小型便携式电子产品的电力来源。
    • 8. 发明授权
    • Method for surface-treating printed circuit board and printed circuit board
    • 印刷电路板和印刷电路板表面处理方法
    • US08915419B2
    • 2014-12-23
    • US13524701
    • 2012-06-15
    • Su Jin LeeHye In KimYoung Kwan LeeChang Kyung WooJe Kyoung Kim
    • Su Jin LeeHye In KimYoung Kwan LeeChang Kyung WooJe Kyoung Kim
    • B23K31/02B23K1/20H05K3/28H05K3/34H05K3/26
    • H05K3/282H05K3/26H05K3/3484H05K2203/095
    • Disclosed herein are a method for surface-treating a printed circuit board and a printed circuit board including a surface treatment layer. The method includes: plasma-treating a surface of a printed circuit board; treating the plasma-treated substrate with an organic solderability preserve; performing heat treatment on the substrate treated with the organic solderability preserve; printing a solder paste on the substrate subjected to the heat treatment; reflowing the solder paste printed substrate to fix the solder paste; and deflux washing the resulting substrate.According to the present invention, the discoloration problem due to oxidation of copper can be solved by performing heat treatment under predetermined conditions after treatment with an organic solderability preserve. Therefore, the present invention can meet various multi-reflow processes, as compared with products of the related art.
    • 这里公开了一种表面处理印刷电路板和包括表面处理层的印刷电路板的方法。 该方法包括:等离子体处理印刷电路板的表面; 用有机可焊性保存处理等离子体处理的基板; 对用有机可焊性保持剂处理的基材进行热处理; 在经过热处理的基板上印刷焊膏; 回流焊膏印刷基板以固定焊膏; 并且对所得到的底物进行去焊洗涤。 根据本发明,由于铜的氧化引起的变色问题可以通过在有机可焊性保存处理后在预定条件下进行热处理来解决。 因此,与现有技术的产品相比,本发明可以满足各种多回流工艺。