Boron-activated ruthenium nanoparticles for hydrogen oxidation reaction in anion exchange membrane fuel cells

IF 11.5 Q1 CHEMISTRY, PHYSICAL Chem Catalysis Pub Date : 2024-12-13 DOI:10.1016/j.checat.2024.101197

Yingdan Cui, Yian Wang, Fei Yang, Weiwei Chen, Guimei Liu, Shangqian Zhu, Xiaoyi Qiu, Fei Xiao, Gongjin Chen, Yan Sun, Mohammad Farhadpour, Dong Su, William E. Mustain, Yoonseob Kim, Minhua Shao

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Abstract

The sluggish reaction kinetics of the hydrogen oxidation reaction (HOR) in alkaline media hinders the applications of anion exchange membrane fuel cells (AEMFCs). This study focuses on developing a high-performance catalyst for alkaline HOR: namely, Ru nanoparticles with a B-doped surface supported on B-doped carbon (B-Ru/BC). It delivers an outstanding exchange current density of 0.855 mA cm⁻²_PGM normalized by an electrochemical active surface area, 3 times that of commercial Pt/C and comparable to that of commercial PtRu/C, and exhibits significantly improved CO tolerance in alkaline media. Notably, the B-Ru/BC catalyst demonstrates impressive durability and achieves a peak power density of 1.5 W cm⁻² in AEMFCs, surpassing commercial PtRu/C. Theoretical calculations revealed the positive effects of B doping on the enhanced activity and durability of B-Ru/BC. This research introduces an organics-free synthesis method for cost-effective B-Ru/BC catalysts, aiming to propel the commercialization of AEMFCs and contribute to the advancement of sustainable energy technologies.

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负离子交换膜燃料电池中用于氢氧化反应的硼活化钌纳米颗粒

碱性介质中氢氧化反应（HOR）反应动力学缓慢，阻碍了阴离子交换膜燃料电池（aemfc）的应用。本研究的重点是开发一种高性能碱性HOR催化剂：即b掺杂碳（B-Ru/BC）表面掺杂的Ru纳米颗粒。经电化学活性表面积标准化后，该材料具有0.855 mA cm - 2PGM的交换电流密度，是商用Pt/C的3倍，与商用PtRu/C相当，并且在碱性介质中具有显著提高的CO耐受性。值得注意的是，B-Ru/BC催化剂表现出令人印象深刻的耐久性，在aemfc中实现了1.5 W cm−2的峰值功率密度，超过了商用PtRu/C。理论计算表明，B掺杂对B- ru /BC活性和耐久性的增强有积极作用。本研究介绍了一种低成本的无有机物合成B-Ru/BC催化剂的方法，旨在推动aemfc的商业化，并为可持续能源技术的发展做出贡献。

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来源期刊

Chem Catalysis

CiteScore

10.50

自引率

6.40%

发文量

期刊介绍： Chem Catalysis is a monthly journal that publishes innovative research on fundamental and applied catalysis, providing a platform for researchers across chemistry, chemical engineering, and related fields. It serves as a premier resource for scientists and engineers in academia and industry, covering heterogeneous, homogeneous, and biocatalysis. Emphasizing transformative methods and technologies, the journal aims to advance understanding, introduce novel catalysts, and connect fundamental insights to real-world applications for societal benefit.