About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Industry
|
| Presentation Title |
Hierarchical Porous Ni-Co-Based Electrodes via Additive Manufacturing and Surface Nanostructuring |
| Author(s) |
Hao Wang, Qiang Li, Min Liu, Tadashi Fujieda, Akihiko Chiba |
| On-Site Speaker (Planned) |
Hao Wang |
| Abstract Scope |
Self-supported three-dimensional electrodes are attractive for supercapacitors because they can integrate electrical conduction, ion-transport pathways, and large active surface area without relying on thick slurry coatings. In this study, we propose a hierarchical porous Ni-Co-based electrode fabricated by combining laser powder bed fusion (L-PBF), dealloying, and oxidation of a Ni-Co-Al precursor alloy. L-PBF was used to form a designed macroporous metallic scaffold, while Al was introduced as a sacrificial element for subsequent selective dissolution. The dealloying process is expected to generate a nanoporous Ni-Co-rich surface on the conductive scaffold, and oxidation can further convert this surface into electrochemically active Ni-Co oxide phases. The presentation will discuss the manufacturability of the Ni-Co-Al precursor, the evolution of surface morphology and phase constitution after dealloying and oxidation, and preliminary electrochemical characterization, including cyclic voltammetry, galvanostatic charge-discharge, and impedance measurements, for evaluating its potential as a supercapacitor electrode material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Electrometallurgy, Copper / Nickel / Cobalt |