| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing and Kinetic Phenomena: From Thin Films and Micro/Nano Systems to Advanced Manufacturing
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| Presentation Title |
Adventures in the World of Nanocarbons: From CNf Mats to SACs on CNFs for Exceptional Electrochemical Water Splitting |
| Author(s) |
Gilbert Daniel Nessim |
| On-Site Speaker (Planned) |
Gilbert Daniel Nessim |
| Abstract Scope |
In 2014, we reported the growth of a large mat of CNFs from the delamination of a thin film stack of Ni/Pd/Ti from the substrate during the thermal process. To avoid using the costly Pd, we found that Au and Ag worked and delivered an interesting surprise: the Ni formed single atom catalysts on the surface of the CNFs. We tested the performance of this material as a water splitting electrode. These non-PGM electrodes showed exceptional OER and HER performance: endurance for 20,000 cycles with negligible change in overpotential at higher currents, low onset overpotentials of 305 mV @ 10 mAcm-2 for OER and 40 mV @ 17 mAcm-2 for HER with current density of 100 mAcm-2 reached at the low overpotential of 195 mV. This original and simple synthesis delivering SACs@nanocarbon could pave the way for developing high performance, non-PGM, electrodes for many electrocatalytic applications beyond water splitting. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Energy Conversion and Storage, Nanotechnology |