About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage 2023
|
Presentation Title |
D-11: Reversible Aqueous Formate-based Na-CO2 Battery Enabled through Earth-abundant Nanoporous Metals |
Author(s) |
Jintao Fu, Eric Detsi |
On-Site Speaker (Planned) |
Jintao Fu |
Abstract Scope |
Metal-CO2 battery is a promising approach towards reducing greenhouse gas emission. State-of-the-art Li-CO2 battery possesses high cell voltage and energy density; however, its discharge products (usually solid Li2CO3 and carbon) will aggregate on the cathode surface resulting in large overpotential during subsequent charging. One solution to this issue is to convert the discharge products from insulating solids into soluble liquids: recently reports have shown the feasibility by using nanoporous Pd as bifunctional electrocatalyst to reversibly convert CO2 into formic acid in aqueous electrolyte. Despite the low charge overpotential reported, Pd is novel and costly, which hinders the scale-up application. In this talk, I will present our results on Na-CO2 system (Na is more abundant and cheaper than Li) where Earth-abundant nanoporous materials, i.e., nanoporous Sn, is used as electrocatalyst towards reversible CO2 reduction and formic acid oxidation, with Na metal as anode and NASICON as solid-state electrolyte. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Nanotechnology, Sustainability |