A Redox-Mediated Iron-Air Fuel Cell for Sustainable and Scalable Power Generation,Advanced Energy Materials

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A Redox-Mediated Iron-Air Fuel Cell for Sustainable and Scalable Power Generation
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-08-27 , DOI: 10.1002/aenm.202301868
Mengqi Gao ₁ , Yuxi Song ₁ , Xuan Zou ₁ , Manohar Salla ₁ , Hang Zhang ₁ , Zhiyu Wang ₁ , Shiqiang Huang ₁ , Qing Wang _{1,

2}

Affiliation

Pursuing carbon neutrality has invigorated extensive investigations into sustainable and cost-effective power sources. Iron-air batteries (IAB) have emerged as a promising option due to their high energy density, low cost, and environmental friendliness. However, conventional IABs grapple with issues such as electrode passivation, low round-trip energy efficiency, and parasitic hydrogen evolution. This study introduces a redox-mediated iron-air fuel cell (RM-IAFC) to surmount these limitations. The RM-IAFC employs a pair of redox mediators, respectively, in anolyte and catholyte tanks, enabling the iron oxidation and oxygen reduction reaction processes to be liberated from the electrodes. This configuration decouples energy storage and power generation, allowing fast refueling and offering operation flexibility and scalability while eliminating the need for expensive catalysts. With these salient features, the RM-IAFC paves the way for sustainable and scalable power generation, particularly for stationary applications.

中文翻译：

用于可持续和可扩展发电的氧化还原介导的铁空气燃料电池

追求碳中和激发了对可持续和具有成本效益的能源的广泛研究。铁空气电池（IAB）由于其高能量密度、低成本和环境友好而成为一种有前途的选择。然而，传统的 IAB 面临着电极钝化、低往返能量效率和寄生析氢等问题。本研究引入了氧化还原介导的铁空气燃料电池（RM-IAFC）来克服这些限制。RM-IAFC 在阳极电解液和阴极电解液罐中分别采用一对氧化还原介体，使铁氧化和氧还原反应过程能够从电极中释放出来。这种配置将能量存储和发电分离，允许快速补充燃料并提供操作灵活性和可扩展性，同时消除对昂贵催化剂的需求。凭借这些显着特征，RM-IAFC 为可持续和可扩展的发电铺平了道路，特别是对于固定应用。

更新日期：2023-08-27

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