Non-uniform Anode Design for High-Temperature Polymer Electrolyte Membrane Fuel Cells with Mitigated Hydrogen Starvation,Energy & Fuels

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Non-uniform Anode Design for High-Temperature Polymer Electrolyte Membrane Fuel Cells with Mitigated Hydrogen Starvation
Energy & Fuels ( IF 5.2 ) Pub Date : 2023-04-17 , DOI: 10.1021/acs.energyfuels.3c00075
Huan Xu _{1,

2,

3} , Zhangxun Xia _{1,

3} , Mu Sun _{1,

2,

3} , Zinan Zhang _{1,

2,

3} , Jicai Huang _{1,

3} , Huanqiao Li _{1,

3} , Fenning Jing _{1,

3} , Dexin Feng ₄ , Suli Wang _{1,

3} , Gongquan Sun _{1,

3}

Affiliation

Hydrogen starvation is one of the major challenges for practical application of fuel cells, which could seriously deteriorate the reliability and safety of the system with the occurrence of voltage reversal. High-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) fed with reformate hydrogen are more liable to suffer from fuel starvation as a result of reduced hydrogen proportion and poisoning impurity of CO. To conquer this inconvenience, here, in this work, a non-uniform catalyst layer with a hydrogen storage function of palladium was developed according to the in-plane distribution characteristics of hydrogen. With the in situ storage and release of hydrogen within the lattice of palladium, fuel could be replenished at the site close to the outlet where fuel starvation could occur. As a result, the utilization of hydrogen is greatly promoted, and the voltage reversal caused by fuel starvation is also prohibited.

中文翻译：

用于缓解氢气不足的高温聚合物电解质膜燃料电池的非均匀阳极设计

氢气匮乏是燃料电池实际应用面临的主要挑战之一，随着电压反接的发生，会严重降低系统的可靠性和安全性。以重整氢为原料的高温聚合物电解质膜燃料电池 (HT-PEMFC) 由于氢比例降低和 CO 杂质中毒，更容易出现燃料不足的情况。为了克服这种不便，在此，在这项工作中，根据氢的面内分布特性，开发了钯的具有储氢功能的非均匀催化剂层。随着原地通过在钯晶格内储存和释放氢气，可以在靠近可能发生燃料不足的出口处补充燃料。从而大大促进了氢气的利用，也禁止了因燃料不足而引起的电压反接。

更新日期：2023-04-17

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