About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2026
|
| Presentation Title |
Effect of Pulse Parameters on Chemical Composition of Electrodeposited Nickel Layers using additive-free Watts Bath on Nanoporous Copper Electrodes |
| Author(s) |
Aishwarya Thotta Jayachandran, Bruno Azeredo |
| On-Site Speaker (Planned) |
Aishwarya Thotta Jayachandran |
| Abstract Scope |
Nickel electrodeposition using additive-free Watts bath is a feasible, economical technique for producing relatively pure nickel coating on Nanoporous Copper (NP-Cu) electrodes without organic contaminants, enhancing their mechanical strength for applications in battery technologies, electrochemical sensors and energy storage. However, this process poses a risk of co-deposition of unwanted species (sulfur and chloride). Using a 3-electrode setup and pulsed current technique, this study investigates the effect of pulse frequency, duty cycle, and peak currents, on the chemical composition of Ni layers deposited onto high-surface-area NP-Cu electrodes (~5 m2/g). Energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) analyses revealed that lower duty cycles (7%) and currents (250mA) promote uniform Ni distribution (~6% atomic concentration) and minimize impurity deposition (<1% atomic concentration of S, Cl) across surface and cross-sections. These conditions preserved the electrode’s porosity and improved its machinability. Further studies involve mechanical testing and surface area analysis. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, Surface Modification and Coatings, Energy Conversion and Storage |