About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2026
|
| Presentation Title |
Design of high-strength Cu alloy current collector foils by metal peeling |
| Author(s) |
Ashish Devkota, Aditya Yalamanchili, Ravi Srivatsa Bindiganavile Narasimhan, Prabhakar R. Pagilla, Dinakar Sagapuram |
| On-Site Speaker (Planned) |
Ashish Devkota |
| Abstract Scope |
The design of high-strength current collector foils that can withstand extreme forces, wrinkling, and delamination caused by the active material is critical for enabling next-generation batteries, e.g., Si-based batteries. This study presents a novel technology called metal peeling for making high-strength Cu alloy foils for batteries in a single step. It involves machining a thin layer of material from a cast feedstock using a sharp cutting edge, while simultaneously transporting and coiling to produce a continuous foil. The specific application of peeling to produce foils from age-hardenable Cu-Ni-Si systems with varying Ni/Si atomic ratios from 2-4 will be discussed. Micro-tensile and hardness tests show that tensile strengths up to 750 MPa can be achieved with greater than 40% IACS through optimization of the Ni/Si ratio. Mechanical properties are interpreted using transmission electron microscopy (TEM) in terms of the NiSi precipitate structures and their evolution with alloy chemistry and aging treatments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Mechanical Properties, Characterization |