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Salen-Based Conjugated Microporous Polymers for Efficient Oxygen Evolution Reaction.

Wei Zhou1, Li Yang2,3, Fu-Yu Zhou1

  • 1Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|April 14, 2020
PubMed
Summary
This summary is machine-generated.

Conjugated microporous polymers with salen show excellent performance as non-noble metal electrocatalysts for the oxygen evolution reaction (OER). These materials offer a promising avenue for energy storage and conversion applications.

Keywords:
electrocatalysisironligand effectsoxygen evolution reactionpolymers

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Developing efficient non-noble metal electrocatalysts for the oxygen evolution reaction (OER) is crucial for advancing energy storage and conversion technologies.
  • Current research focuses on identifying novel materials that can overcome the limitations of precious metal catalysts.

Purpose of the Study:

  • To investigate conjugated microporous polymers (CMPs) incorporating salen as novel electrocatalysts for the OER.
  • To evaluate the catalytic performance and understand the underlying mechanisms of these salen-based CMPs.

Main Methods:

  • Synthesis of salen-incorporated conjugated microporous polymers (salen-CMPs).
  • Electrochemical characterization of the OER performance, including overpotential and Tafel slope.
  • Density Functional Theory (DFT) and Grand Canonical Monte Carlo (GCMC) calculations to elucidate structure-property relationships.

Main Results:

  • The best performing catalyst, salen-CMP-Fe-3, demonstrated a low Tafel slope of 63 mV dec⁻¹ and an overpotential of 238 mV at 10 mA cm⁻².
  • Computational studies confirmed the intrinsic catalytic activity of the salen moiety and the beneficial pore enrichment effect.
  • Salen-based CMPs exhibited outstanding electrocatalytic properties for the OER.

Conclusions:

  • Conjugated microporous polymers incorporating salen are effective non-noble metal electrocatalysts for the oxygen evolution reaction.
  • The synergistic effect of the salen moiety and the porous structure contributes to the enhanced catalytic activity.
  • This study highlights metal-coordinated porous polymers as a promising class of materials for efficient electrocatalysis.