• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of green energy >Investigation of titanium liquid/gas diffusion layers in proton exchange membrane electrolyzer cells
【24h】

Investigation of titanium liquid/gas diffusion layers in proton exchange membrane electrolyzer cells

机译：质子交换膜电解槽中钛液/气扩散层的研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In a proton exchange membrane electrolyzer cell (PEMEC), liquid/gas diffusion layer (LGDL) is expected to transport electrons, heat, and reactants/products to and from the catalyst layer with minimum voltage, current, thermal, interfacial, and fluidic losses. In addition, carbon materials, which are typically used in PEM fuel cells (PEMFCs), are unsuitable in PEMECs due to the high ohmic potential and highly oxidative environment of the oxygen electrode. In this study, a set of titanium gas diffusion layers with different thicknesses and porosities are designed and examined coupled with the development of a robust titanium bipolar plate. It has been found that the performance of electrolyzer improves along with a decrease in thickness or porosity of the anode LGDL of titanium woven meshes. The ohmic resistance of anode LGDL and contact resistance between anode LGDL and the anode catalyst play dominant roles in electrolyzer performance, and better performance can be obtained by reducing ohmic resistance. Thin titanium LGDLs with straight-through pores and optimal pore morphologies are recommended for the future developments of low-cost LGDLs with minimum ohmic/transport losses.
机译：在质子交换膜电解槽（PEMEC）中，液体/气体扩散层（LGDL）有望以最小的电压，电流，热，界面和流体损失将电子，热和反应物/产物往返于催化剂层。另外，由于氧电极的高欧姆电位和高氧化环境，通常用于PEM燃料电池（PEMFC）中的碳材料不适用于PEMEC。在这项研究中，设计并检查了一组具有不同厚度和孔隙率的钛气体扩散层，并开发了坚固的钛双极板。已经发现，电解器的性能随着钛编织网的阳极LGDL的厚度或孔隙率的减小而改善。阳极LGDL的欧姆电阻以及阳极LGDL与阳极催化剂之间的接触电阻在电解器性能中起主要作用，并且可以通过降低欧姆电阻来获得更好的性能。对于具有最小欧姆/传输损耗的低成本LGDL的未来发展，建议使用具有直通孔和最佳孔隙形态的薄钛LGDL。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号