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Electrostatic decatalysis through coulombic screening.

Bhojkumar Nayak1, Abdul Raafik Arattu Thodika2, Hemanga Pradhan1

  • 1Department of Chemistry, Indian Institute of Science Education and Research, Pune Dr Homi Bhabha Road Pune 411008 India musthafa@iiserpune.ac.in.

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|February 4, 2026
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Summary
This summary is machine-generated.

Electrostatic decatalysis uses coulombic forces to improve ammonia electrosynthesis selectivity and efficiency. This method enhances substrate enrichment and offers significant energy savings, showing broad applicability in electrochemical processes.

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Area of Science:

  • Electrochemistry
  • Catalysis
  • Surface Science

Background:

  • Parasitic reactions often limit selectivity in electrochemical processes.
  • Controlling interfacial electrostatics is key to modulating catalytic outcomes.
  • Ammonia electrosynthesis requires efficient and selective catalytic methods.

Purpose of the Study:

  • To demonstrate electrostatic decatalysis for selective electrochemical reactions.
  • To enhance ammonia electrosynthesis via interfacial electrostatic modulation.
  • To investigate the role of coulombic interactions in catalytic selectivity.

Main Methods:

  • Utilizing molecular dynamics simulations to analyze electrostatic screening and substrate enrichment.
  • Experimentally reconfiguring interfacial electrostatic landscapes.
  • Measuring faradaic efficiency and current densities for ammonia electrosynthesis.

Main Results:

  • Achieved site- and flux-selective modulation of competing reactions.
  • Observed a nearly sevenfold enhancement in substrate enrichment factors.
  • Increased ammonia's faradaic efficiency more than twofold.
  • Demonstrated energy savings exceeding 50% compared to conventional methods.

Conclusions:

  • Electrostatic decatalysis effectively screens parasitic chemistry, enhancing catalytic selectivity.
  • The approach shows broad, pH-insensitive applicability for electrochemical process optimization.
  • Coulombic forces offer a universal strategy for improving electrochemical synthesis.