Confining Flat Ru Islands into TiO2 Lattice with the Coexisting Ru–O–Ti and Ru–Ti Bonds for Ultra‐Stable Hydrogen Evolution at Amperometric Current Density and Hydrogen Oxidation at High Potential
2024

Ultra-Stable Hydrogen Production with Ru@TiO2

publication Evidence: high

Author Information

Author(s): Chen Luyun, Li Chunlei, Liu Mengling, Dai Ziruo, Wang Haibin, Zhou Xuan, Zhao Qiuping, Cong Yuanyuan

Primary Institution: Lanzhou University of Technology

Hypothesis

Can embedding flat Ru islands into a TiO2 lattice improve hydrogen evolution and oxidation reactions?

Conclusion

The F-Ru@TiO2 electrocatalyst demonstrates exceptional performance in hydrogen evolution and oxidation reactions, achieving low overpotentials and high stability.

Supporting Evidence

  • F-Ru@TiO2 shows a low HER overpotential of 74 mV at 1000 mA cm−2.
  • F-Ru@TiO2 can tolerate the HER current density of 1000 mA cm−2 for 100 hours.
  • F-Ru@TiO2 achieves an ultrahigh mass activity of 3155 A gRu −1 for HOR.
  • F-Ru@TiO2 maintains stable performance at high anodic potential up to 0.5 V versus RHE.

Takeaway

Scientists created a special material that helps make hydrogen energy more efficiently and lasts a long time without breaking down.

Methodology

The study involved synthesizing flat Ru islands embedded in TiO2 and testing their electrocatalytic performance for hydrogen reactions.

Digital Object Identifier (DOI)

10.1002/advs.202410881

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