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A concurrently optimization of H and OH binding energies in atomically Ni anchored Ru/RuO2 nanosheet driving high CO-tolerant hydrogen oxidation catalysis

Author

Listed:
  • Liangbin Liu

    (Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM)
    Xiamen University)

  • Lujie Jin

    (Soochow University)

  • Renjie Ren

    (Wuhan University)

  • Wei Yan

    (Xiamen University)

  • Nan Fang

    (Xiamen University)

  • Yujin Ji

    (Soochow University)

  • Youyong Li

    (Soochow University)

  • Lin Zhuang

    (Wuhan University)

  • Qingyu Kong

    (St-Aubin)

  • Zhiwei Hu

    (Nothnitzer Strasse 40)

  • Qi Shao

    (Soochow University)

  • Xiaoqing Huang

    (Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM)
    Xiamen University)

Abstract

The development of highly active and CO-tolerant hydrogen oxidation reaction (HOR) electrocatalysts is of great significance for alkaline exchange membrane fuel cells (AEMFCs). Here, the designed atomically Ni anchored Ru/RuO2 heterostructure nanosheets (NiSA-Ru@RuO2 NSs/C) exhibit enhanced activity and stability for HOR in alkaline media. The optimized electrocatalyst delivers a high CO-tolerant durability with 92.3% retention in the 1000 ppm CO concentration after 5000 s test. Moreover, the anode catalyst NiSA-Ru@RuO2 NSs/C assembled AEMFCs output a peak power density (PPD) and specific PPD of 1.76 W cm−2 and 17.6 W mgPGM−1 under the H2/O2 condition and performed a long-term stability with negligible decay for 100 h at 0.5 A cm−2 for the AEMFCs. The relative mechanism studies reveal that the Ru/RuO2 heterostructure nanosheet and dispersed Ni single atoms have optimized the *H and *OH adsorption simultaneously and weaken the *CO adsorption. Our work may offer a significant guideline on the rational design of high-performance HOR electrocatalyst for energy-related applications.

Suggested Citation

  • Liangbin Liu & Lujie Jin & Renjie Ren & Wei Yan & Nan Fang & Yujin Ji & Youyong Li & Lin Zhuang & Qingyu Kong & Zhiwei Hu & Qi Shao & Xiaoqing Huang, 2025. "A concurrently optimization of H and OH binding energies in atomically Ni anchored Ru/RuO2 nanosheet driving high CO-tolerant hydrogen oxidation catalysis," Nature Communications, Nature, vol. 16(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63998-8
    DOI: 10.1038/s41467-025-63998-8
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