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相关概念视频

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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向使用硫酸聚 ((pentafluorostyrene) 的高温燃料电池发展.

Theresa Stigler1,2, Sebastian Auffarth1,2, Maximilian Wagner1,3

  • 1Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IET-2), Cauerstr. 1, 91058 Erlangen, Germany. th.stigler@fz-juelich.de.

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概括
此摘要是机器生成的。

研究人员开发了一种新的混合聚合物膜,其中含有酸和硫酸组. 这种先进的材料在高温下显示出比Nafion N211更高的质子导电性.

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科学领域:

  • 聚合物化学 聚合物化学
  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学

背景情况:

  • 质子交换膜 (PEM) 对燃料电池技术至关重要.
  • PEM燃料电池的高温运行需要具有增强质子导电性和稳定性的膜.
  • 像Nafion N211这样的传统膜在120°C以上的温度下面临限制.

研究的目的:

  • 合成一种新型的混合聚合物材料,其中包含酸和硫酸功用组.
  • 从这种混合聚合物与胺醇聚合物混合制造和表征一种机械稳定的膜.
  • 在高温下评估新膜的质子导电性.

主要方法:

  • 在SNAr Michaelis-Arbuzov和para-fluoro-thiol反应中,在一个多 (pentafluorostyrene) 骨干上合成混合聚合物.
  • 将混合聚合物与胺醇聚合物混合在一起,形成一个复合膜.
  • 在超过120°C的温度下进行机械稳定性测试和质子导电性测量.

主要成果:

  • 成功制造出一种机械稳定的混合聚合物膜.
  • 膜的质子导电率高达Nafion N211的三倍.
  • 特别是在120°C以上的温度下观察到更好的性能.

结论:

  • 开发的混合聚合物膜为高温燃料电池应用提供了一个有前途的替代方案.
  • 酸和硫酸部分的组合有助于在高温下优异的质子传输.
  • 这种材料的进步可能会导致更高效,更强大的燃料电池系统.