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Low-platinum, self-supported hexa-high-entropy-alloy anode for high-performance direct glycerol fuel cells

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Listed:
  • Zhang, Han
  • Miao, Lingling
  • Zhao, Na
  • Zhao, Qianxi
  • Shi, Yaoan
  • Wang, Wei

Abstract

High-entropy-alloys (HEAs) based catalytic electrodes exhibit adjustable compositions, abundant active sites, and efficient electron transfer properties, making them to be good candidates for a wide range of electrocatalytic reactions in renewable energy related technologies. Herein, a self-supported catalytic electrode based on a hexa-element HEAs, loaded onto carbon cloth (PtCuMoMnNiFe-NPs/CC), was developed for glycerol oxidation reactions (GOR) as the anode in direct glycerol fuel cells (DGFCs). It is noteworthy that the results indicate that the configurational entropy of as-prepared HEAs on PtCuMoMnNiFe-NPs/CC is 12.65R, conforming the good formation of high-entropy materials. The electrochemical results showed that the peak current density of GOR for PtCuMoMnNiFe-NPs/CC and Pt/C electrodes reached 0.124 mA cm−2 and 0.042 mA cm−2, respectively. Obviously, the PtCuMoMnNiFe-NPs/CC electrode exceeded that of Pt/C electrode by nearly 195.2 %. Furthermore, in a 500-cycle durability test, the PtCuMoMnNiFe-NPs/CC also demonstrated better current retention (67.7 %) compared to Pt/C, demonstrating good stability for long-term use in renewable energy systems. Notably, when used as anodes in DGFCs, the PtCuMoMnNiFe-NPs/CC is 29.99 mW cm−2 which is outperformed the Pt/C electrode by nearly 105 %. This study would offer a promising strategy for developing advanced low-Pt HEAs materials in energy-related applications.

Suggested Citation

  • Zhang, Han & Miao, Lingling & Zhao, Na & Zhao, Qianxi & Shi, Yaoan & Wang, Wei, 2025. "Low-platinum, self-supported hexa-high-entropy-alloy anode for high-performance direct glycerol fuel cells," Renewable Energy, Elsevier, vol. 245(C).
    • Handle: RePEc:eee:renene:v:245:y:2025:i:c:s0960148125004896
    DOI: 10.1016/j.renene.2025.122827
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