Electrosynthesized Metal/Polymer Hybrid: Unlocking Selective Formate Production via CO2Electroreduction

Title

Electrosynthesized Metal/Polymer Hybrid: Unlocking Selective Formate Production via CO2Electroreduction

Creator

Jacob, Evin; Varghese, Anitha

Description

Carbon dioxide reduction via electrochemical means offers a sustainable pathway to mitigate CO2emissions and synthesize value-added chemicals. Here, we report the synthesis and performance of a metal/polymer-carbon paper (CuxOy/PoPD/CFP) electrode prepared via a simple two-step in situ electrodeposition method for the electrochemical CO2reduction reaction (CO2ER). Unlike most reported catalysts that yield multiple liquid products and complicate downstream separation processes, CuxOy/PoPD/CFP selectively produces formate as the sole liquid product across all of the test potentials. The amine-rich and porous PoPD matrix synergistically enhanced CO2capture, provided a conductive scaffold for efficient electron transfer, and facilitated intimate interfacial contact with copper oxides, enabling improved catalytic performance. The catalyst demonstrated an onset potential of ??0.27 V (vs RHE) and achieved a faradaic efficiency of 72.6% for formate with a current density of 6.70 mA/cm2at ?0.80 V (vs RHE). Studies showcased an electrochemically active surface area (ECSA) of 16.625 cm2and a roughness factor of 8.31. The long-duration electrolysis experiment demonstrated stable performance for an extended period, maintaining continuous electrolysis for up to 9.5 h without significant fluctuations or degradation in activity. 2025 American Chemical Society

Source

ACS Sustainable Resource Management;Volume;2;Issue;8;pp.1437-1448

Date

01-01-2025

Publisher

American Chemical Society

Subject

carbon fiber paper electrode; CO₂electroreduction reaction; electrodeposition; metalpolymer hybrid

Coverage

Jacob E., Department of Chemistry, Christ University, Karnataka, Bangalore, 560029, India; Varghese A., Centre for Renewable Energy and Environmental Sustainability, Christ University, Karnataka, Bangalore, 560029, India

Rights

Restricted Access; Hardcopy may be available in the library

Relation

ISSN: 28371445;

Format

online

Language

English

Type

Article

Identifier

https://doi.org/10.1021/acssusresmgt.5c00204

https://www.scopus.com/pages/publications/105021883578?origin=resultslist