Elucidation of the electrolyte volatile phenomenon of MCFC by the visualization technique

可视化技术阐明MCFC电解质挥发现象

基本信息

  • 批准号:
    18560217
  • 负责人:
  • 金额:
    $ 2.53万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2006
  • 资助国家:
    日本
  • 起止时间:
    2006 至 2007
  • 项目状态:
    已结题

项目摘要

Volatilization of molten salt is one of the factors to control the performance of Molten Carbonate Fuel Cells (MCFC). The power of MCFC deteriorates for which the long time operation of MCFC causes the depletion of the electrolyte and this electrolyte volatile matter blocks exhaust pipe. However, most researchers are not interested in this problem in spite of serious problem. One of the reasons is that it is difficult to analyze it because the carbonate is strong alkalinity. Therefore, we proposed the method by which an electrolyte volatile phenomenon in the cell can be observed by a non-contact image measurement technique. We use MCFC single cell's frame which has an observation window and an irradiation window. As a result, we elucidate the volatile phenomenon of (Li+K)/CO_3. Although the volatile matters of (Li+K)/CO_3 in anode are produced with a cellular reaction, (Li+K)/CO_3 in cathode is hardly volatiled with cell reaction. Moreover, we elucidate the electrolyte volatile phenomenon of (Li+Na)/CO_3. Although the volatile matter with cell reaction cannot be observed, the volatile matter which does not depend on the cell reaction was sometimes confirmed. Generally, (Li+Na)/CO_3 electrolyte is hardly volatile more than (Li+K)/CO_3 electrolyte. We confirmed the advantage of (Li+Na)/CO_3 electrolyte by observing the inside cell by a non-contact image measurement technique under the cell operating condition. However, a large amount of electrolytes that originated in the leakage from the wet seal part are discharged beginning immediately after operation and lasting until about one week later on the Li/Na electrolyte. Therefore, because the Li/Na electrolyte hardly permeates into the pores of an electrode, a poor assembly accuracy of the gap between an electrode and a separator, an overfilling of electrolyte and a large flow-rate immediately after start-up should be avoided.
熔盐挥发是控制熔融碳酸盐燃料电池(MCFC)性能的因素之一。MCFC的功率劣化是由于MCFC长时间运行导致电解液耗尽,这种电解液挥发物堵塞排气管。然而,尽管存在严重的问题,但大多数研究人员对此问题并不感兴趣。其中一个原因是由于碳酸盐是强碱性的,所以分析起来很困难。因此,我们提出了一种非接触式图像测量技术来观测电解液挥发现象的方法。我们使用的是MCFC单细胞框架,它有一个观察窗和一个照射窗。因此,我们解释了(Li+K)/CO_3的挥发现象。虽然阳极中的(Li+K)/CO_3挥发物是通过细胞反应产生的,但阴极中的(Li+K)/CO_3几乎不随电池反应而挥发。此外,我们还解释了(Li+Na)/CO_3的电解液挥发现象。虽然没有观察到与电池反应有关的挥发物质,但有时可以证实挥发物质不依赖于电池反应。一般来说,(Li+Na)/CO_3电解液几乎不比(Li+K)/CO_3电解液挥发。利用非接触式图像测量技术,在电池工作状态下对电池内部进行了观察,证实了(Li+Na)/CO_3电解液的优越性。然而,从湿密封部分泄漏而来的大量电解液在手术后立即开始释放,并持续到大约一周后在Li/Na电解液上。因此,由于Li/Na电解液几乎不渗透到电极的孔中,因此应避免电极与隔板之间的间隙装配精度差、电解液装满过多和启动后立即出现大流量。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Volatilization behavior of Li/Na carbonate as an electrolyte in MCFC-An electrolyte leakage from a wet seal part by visualization technique-
MCFC中作为电解质的碳酸锂/钠的挥发行为-通过可视化技术观察湿密封部分的电解质泄漏-
  • DOI:
  • 发表时间:
    2007
  • 期刊:
  • 影响因子:
    0
  • 作者:
    K.Sugiura;M.Soga;M.Yamauchi;K.Tanimoto
  • 通讯作者:
    K.Tanimoto
MCFCの電解質揮発現象のその場観察
MCFC中电解液挥发现象的原位观察
Volatilization behavior of Li/Na carbonate as an electrolyte in MCFC
MCFC中碳酸锂/钠电解质的挥发行为
Visualization of electrolyte volatile phenomenon in DIR-MCFC
  • DOI:
    10.1016/j.jpowsour.2006.01.007
  • 发表时间:
    2006-07
  • 期刊:
  • 影响因子:
    9.2
  • 作者:
    K. Sugiura;Tadakatsu Yodo;M. Yamauchi;K. Tanimoto
  • 通讯作者:
    K. Sugiura;Tadakatsu Yodo;M. Yamauchi;K. Tanimoto
Comparison between volatile phenomenon of(Li+Na)/CO_3 and volatile phenomenon of(Li+K)/CO_3 by visualization technique in MCFC
MCFC中(Li Na)/CO_3和(Li K)/CO_3挥发现象的可视化比较
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SUGIURA Kimihiko其他文献

SUGIURA Kimihiko的其他文献

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{{ truncateString('SUGIURA Kimihiko', 18)}}的其他基金

Elucidation of the degradation factor distribution in one cell on Polymer Electrolyte Fuel Cells
阐明聚合物电解质燃料电池中单个电池的退化因子分布
  • 批准号:
    20560206
  • 财政年份:
    2008
  • 资助金额:
    $ 2.53万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Evaluation of volatile behavior and the volatilization volume of molten salt in DIR-MCFC by the image measurement technique
利用图像测量技术评价DIR-MCFC中熔盐的挥发行为和挥发量
  • 批准号:
    15560193
  • 财政年份:
    2003
  • 资助金额:
    $ 2.53万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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