HySelect Documents

Tested Short SDE Stack

May 20, 2025

This document is Deliverable D3.7. Efforts to improve and test the SO2 depolarized electrolyser (SDE) prototype were made at Aalto University. The aim was to enhance the current design of the SDE setup with better plate coatings, optimized membrane materials, and a refined configuration. Our plan involved integrating these improvements and conducting over 50 hours of rigorous testing to evaluate the performance of the five-cell stack. The deliverable aimed at validating the improvements and ensuring the prototype was ready for future applications. Significant improvements were made at systemic level that include changes in gas analysis system, optimization of catholyte flows, reduction in sulfuric acid concentration, etc.

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