在质子交换膜燃料电池和水电解中用于材料和大规模运输的气体扩散层之间的相似之处和差异
Tao Zhang1, Ling Meng1, Chengcheng Chen2
1Huangpu Hydrogen Energy Innovation Center, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 18, 2024
概括
本综述比较了质子交换膜燃料电池 (PEMFC) 和水电解 (PEMWE) 的气体扩散层 (GDL). 它强调了物质差异和大规模运输的挑战,如水泛滥和泡效应.
科学领域:
- 能能源技术 能能源技术
- 电化学能量转换 电化学能量转换
背景情况:
- 质子交换膜燃料电池 (PEMFC) 和质子交换膜水电解 (PEMWE) 是关键的能源设备.
- 虽然催化剂层和膜得到了充分的研究,但PEMFC和PEMWE中的气体扩散层 (GDL) 仍然较少.
- 在PEMFC和PEMWE系统中,GDL对于高效运行至关重要.
研究的目的:
- 为了比较GDL在PEMFC和PEMWE中的材料和大规模运输特性.
- 确定这些互补技术的GDL要求中的关键差异和相似之处.
- 为优化未来能系统的GDL设计提供见解.
主要方法:
- 基于工作条件的GDL材料的比较分析.
- 讨论PEMFC和PEMWE特有的大众运输限制.
- 对图像技术和模拟进行审查,以了解GDL性能.
- 检查水淹和气泡管理的结构设计解决方案.
主要成果:
- 碳GDL面临高电位PEMWE阳极的腐蚀问题,有利于金属替代品.
- PEMFC容易受到水淹没的影响,而PEMWE则受到泡形成的影响.
- 材料选择和结构设计对于减轻大规模运输问题至关重要.
- 先进的成像和模拟工具有助于理解GDL行为.
结论:
- 在GDL材料要求和大众运输挑战方面,PEMFC和PEMWE之间存在显著的差异.
- 优化GDL设计,考虑材料特性和结构,对于推进这两种技术至关重要.
- 这一审查为未来的能源应用GDL的研究和开发提供了基础.
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