| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
High Performance Electrocatalysts for Anion-Exchange Membrane Electrolyzer Through Acoustic Cavitation |
| Author(s) |
Harpreet Singh, Arpit Thomas |
| On-Site Speaker (Planned) |
Harpreet Singh |
| Abstract Scope |
Water electrolysis is a promising technique for producing high-purity, clean hydrogen. Alkaline water electrolysis (AWE) is well-established, while proton exchange membrane water electrolysis (PEMWE) is more efficient. However, PEMWE's high cost and AWE's limited current density are significant drawbacks. Recent efforts to combine AWE and PEMWE benefits have led to anion-exchange membrane water electrolysis (AEMWE). Although promising, AEMWE requires significant advancements for large-scale commercial viability. Herein, we present the first demonstration of acoustic cavitation assisted electrochemical deposition (ACE) for synthesizing highly active and durable nano-porous NiMn//NiFe oxyhydroxide catalysts for AEMWE operated at large current densities. The AEMWE cell with ACE deposited NiMn//NiFe oxyhydroxide catalysts showcased very low potential, along with minimum degradation after prolonged testing of 1000 hours. The outstanding performance of ACE synthesized catalysts is attributed to favourable morphological and chemical changes along with enhanced intrinsic reactivity on exposure to extreme localized temperature and strain during acoustic cavitation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, Other |