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Related Experiment Video

Updated: May 30, 2025

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

Highly Efficient and Durable Ammonia Electrolysis Cell Using Zirfon Separator.

Haeyong Shin¹, Sang-Mun Jung¹, Young Jin Lim¹

¹Department of Materials Science and Engineering, Pohang University of Science and Technology, Gyeongbuk, 37673, Republic of Korea.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|January 31, 2025

Summary

This study introduces a novel ammonia electrolysis cell (AEC) using a Zirfon separator, overcoming limitations of traditional anion exchange membranes (AEMs). The Zirfon-based AEC demonstrates superior performance and durability under challenging conditions.

Keywords:

ammonia ammonia electrolysis cell ion conductivity operating conditions zirfon

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Area of Science:

Electrochemistry
Materials Science
Chemical Engineering

Background:

Anion exchange membranes (AEMs) are commonly used in ammonia electrolysis but have limitations in pH and ammonia concentration.
Existing AEMs show significant conductivity degradation during operation.

Purpose of the Study:

To introduce and evaluate a novel ammonia electrolysis cell (AEC) utilizing a Zirfon separator.
To assess the performance and durability of Zirfon-based AECs under high pH and ammonia concentrations.

Main Methods:

Fabrication and testing of an ammonia electrolysis cell with a Zirfon separator.
Performance evaluation through current density measurements.
Durability assessment via cycling tests and conductivity degradation analysis.

Main Results:

The Zirfon-based AEC achieved a peak current density of 915 mA cm⁻², the highest reported in AEC literature.
Zirfon separator exhibited significantly less conductivity degradation (14.1%) compared to AEMs (30.2%) during cycling tests.
The Zirfon-based AEC demonstrated superior durability and performance under demanding operating conditions.

Conclusions:

Zirfon separators offer a promising alternative to AEMs for ammonia electrolysis.
Zirfon-based AECs provide enhanced performance and durability, enabling operation under high pH and ammonia concentrations.