When Conductive Carbon Meets Reconstructed Electrocatalyst in Neutral Media

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Abstract
In the field of electrocatalysis, conductive carbon is commonly incorporated to enhance the electrical conductivity of catalyst materials. However, its specific role in systems involving reconstructed electrocatalysts remains poorly understood, largely due to the complex interplay between carbon surface chemistry and the dynamic reconstruction of catalytic materials. Here, we demonstrate that during the oxygen evolution reaction (OER) under neutral conditions, conductive carbon functions not merely as an electron conductor, but as a critical anchoring platform that facilitates catalyst reconstruction, thereby boosting both the activity and stability of perovskite oxide catalysts. Upon reconstruction, the perovskite oxide releases Co/Fe species, which subsequently redeposit onto the carbon matrix. These redeposited species substantially enhance OER activity and stability through the anchoring effect of carbon. This work provides a new strategy for designing highly stable yet dynamically restructuring OER electrocatalysts by using carbon additives with tailored surface properties.
Funding Information
  • Science and Technology Commission of Shanghai Municipality (25CL2902300)
  • Qingyuan Innovation Laboratory (00524006)

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