About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
Oriented Nanoporous Metal via Reduction-induced Decomposition |
Author(s) |
Congcheng Wang, Qing Chen |
On-Site Speaker (Planned) |
Congcheng Wang |
Abstract Scope |
The interface-controlled dissolution kinetics in dealloying generates invariantly randomly oriented pores at nanoscales. We show that in a dealloying-analogy, reduction-induced decomposition, the high rate of selective dissolution reaches the limit of diffusion in the liquid solution, and thereby aligns the nanoporous structure with the propagation of reaction. The underlying mechanism is explained via in-situ measurements of instantaneous reaction rates and activation energies. We further demonstrate that with a flow field guiding the ingression of the solution, we can manipulate the structural orientation to create complex orientation patterns for applications as electrodes in flow cells. |
Proceedings Inclusion? |
Undecided |
Keywords |
Nanotechnology, Phase Transformations, Energy Conversion and Storage |