在没有膜的直接甲醇燃料电池 (DMFC) 中优化多个反应物
Iesti Hajar Hanapi1, Siti Kartom Kamarudin1,2, Azran Mohd Zainoodin1
1Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia.
Micromachines
|June 28, 2023
概括
没有膜的直接甲醇燃料电池 (DMFC) 使用双电解质和双氧化剂 (氧和过氧化) 显示出更好的性能. 这种方法提高了功率密度,并解决了传统燃料电池的挑战.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 能源转换 能源转换
背景情况:
- 传统的燃料电池面临着膜管理,成本和水平衡方面的挑战.
- 没有膜的燃料电池为便携式电源应用提供了一个有希望的替代方案.
- 目前的无膜系统通常使用单个电解质,限制了性能优化.
研究的目的:
- 为了提高没有膜的直接甲醇燃料电池 (DMFC) 的性能.
- 研究使用双电解质和双氧化剂 (氧和过氧化).
- 分析燃料和电解质度对燃料利用的影响.
主要方法:
- 在酸性,性和双介质条件下对没有膜的DMFC进行系统测试.
- 评估单和双氧化剂系统,包括氧和过氧化.
- 优化燃料和电解质度以研究燃料利用率和功率密度.
主要成果:
- 燃料利用率随着燃料度的增加而下降,但随着电解质度达到2M而改善.
- 在双电解质系统中,使用双氧化剂实现了15.5mW cm-2的初始功率密度.
- 优化的系统性能达到了30mW cm-2,比单个电解质配置显著改善.
结论:
- 双电解质与双氧化剂 (氧和H2O2) 相结合,显著提高了没有膜的DMFC性能.
- 优化的双电解质,双氧化剂系统为高性能便携式电源提供了可行的途径.
- 这项研究强调了多反应物系统的潜力,以克服单电解质无膜燃料电池的局限性.
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