Supperlattice-Like Structure: Ordered Mass Transfer Endowing High Quality Output of Fuel Cell

Authors

Jian Wang, a Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
Wen-Hui Xuan, a Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
Qian He, a Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
Jing-Xia Jiang, a Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
Yuan-Yuan Zhou, a Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
Yao Nie, b Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China
Qiang Liao, c Institute of Engineering Thermophysics, School of Energy and Power Engineering Chongqing University, Chongqing, China
Min-Hua Shao, d Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong
Wei Ding, a Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, ChinaFollow
Zi-Dong Wei, a Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, ChinaFollow

Corresponding Author

Wei Ding(dingwei128@cqu.edu.cn);
Zi-DongWei(zdwei@cqu.edu.cn)

Abstract

The current or voltage fluctuation in fuel cell operation is harmful to the fuel cell system and power application equipment. Here, we report a technique to eliminate such a fluctuation by the aid of new type of catalysts, superlattice-like mesoporous PtCo catalysts. The current fluctuation in fuel cells catalyzed by two invented catalysts are fixed at as low as 25 mA·cm⁻² with a power of 0.75 W·cm⁻² or 120 mA·cm⁻² with a power of 1.01 W·cm⁻², and no noticeable current decay was detected over 100 h. By contrast, a cell catalyzed by conventional Pt/C catalysts with the same Pt loading delivered a current fluctuation as large as 180 mA·cm⁻² even at low power output of 0.30 W·cm⁻², which also showed 32% current decay rate in 50 h. The superlattices-like mesoporous structure not only enhances the mass transfer and depresses the water flooding but also effectively increases the Pt utilization within its 3D carbon frameworks. Its power output was as high as 11.69 W·mg_Pt⁻¹ _(MEA), which is 46.1% higher than the 2025 target of DOE, USA, 8.0 W·mg_Pt⁻¹_(MEA).

Graphical Abstract

Keywords

Quality output; Superlattices-like; PtCo alloy; Mass transport; ORR

DOI Link

https://doi.org/10.13208/j.electrochem.2215003

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Publication Date

2023-01-28

Online Available Date

2022-10-08

Revised Date

2022-07-24

Received Date

2022-05-31

Recommended Citation

Jian Wang, Wen-Hui Xuan, Qian He, Jing-Xia Jiang, Yuan-Yuan Zhou, Yao Nie, Qiang Liao, Min-Hua Shao, Wei Ding, Zi-Dong Wei. Supperlattice-Like Structure: Ordered Mass Transfer Endowing High Quality Output of Fuel Cell[J]. Journal of Electrochemistry, 2023 , 29(1): 2215003.
DOI: 10.13208/j.electrochem.2215003
Available at: https://jelectrochem.xmu.edu.cn/journal/vol29/iss1/7