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Movable type printing method to synthesize high-entropy single-atom catalysts.

Peng Rao1, Yijie Deng2, Wenjun Fan3

  • 1State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China.

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Researchers developed a novel printing method to create high-entropy single-atom catalysts with up to eleven metals. These advanced catalysts show superior performance for the oxygen reduction reaction compared to platinum.

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Area of Science:

  • Materials Science
  • Catalysis
  • Nanotechnology

Background:

  • Synthesizing catalysts with multiple single metal atoms is challenging.
  • Controllable anchoring of multiple isolated metal atoms offers significant scientific and technological opportunities.

Purpose of the Study:

  • To present a general route for synthesizing high-entropy single-atom catalysts with tunable multicomponent.
  • To demonstrate the utility of these catalysts in the oxygen reduction reaction.

Main Methods:

  • Developed a movable type printing method for anchoring multiple single metal atoms.
  • Utilized porous nitride-doped carbon supports.
  • Synthesized various high-entropy single-atom catalysts by adjusting printing templates and carbonization parameters.

Main Results:

  • Successfully anchored up to eleven metals as highly dispersed single-atom centers.
  • Demonstrated tunable multicomponent catalysts using the same method.
  • Quinary high-entropy single-atom catalysts (FeCoNiCuMn) exhibited superior activity and durability for oxygen reduction reaction compared to commercial Pt/C.

Conclusions:

  • The developed method provides a general route for creating diverse high-entropy single-atom catalysts.
  • This work expands the family of single-atom catalysts and opens avenues for highly efficient, multi-compositional catalysts.