A method for improving the performance of an electrocatalytic nitrate reduction ammonia synthesis system by modifying electrode materials with ionic liquids
By modifying the surface of metal oxide electrode materials with ionic liquids, the electrocatalytic nitrate reduction to ammonia synthesis system was optimized, solving the problem of competition in the hydrogen evolution reaction and achieving a highly efficient ammonia synthesis effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2022-09-22
- Publication Date
- 2026-06-19
AI Technical Summary
In the current electrocatalytic reduction of nitrate to ammonia, the hydrogen evolution reaction is highly competitive, resulting in low Faraday efficiency and ammonia production rate. There is a lack of research on effective ionic liquid-modified electrode materials.
A simple impregnation method was used to modify the surface of a metal oxide electrode material with ionic liquid. The electrocatalytic reduction of nitrate to ammonia synthesis system was optimized by linear sweep voltammetry and constant potential electrolysis.
At electrolysis potentials of -0.7 and -1.1 V vs RHE, the Faraday efficiency and ammonia production rate reached 84% and 27.21 mg h⁻¹ mg⁻¹, respectively, which improved the selectivity of the catalyst and the ammonia production rate.
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Figure CN117779057B_ABST