About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
Magnesium as a Zero- or Negative-Emissions Fuel for Shipping and Aerospace |
Author(s) |
Hongyi Sun, Yi Jie Wu, Jake Scarponi, Adam C. Powell, Jagannath Jayachandran |
On-Site Speaker (Planned) |
Hongyi Sun |
Abstract Scope |
Magnesium and its hydride are potential zero- or negative-emissions transportation fuels due to high energy density, abundance particularly in sea water, low oxide and hydroxide toxicity, and reaction with CO₂. It is economical to produce MgO or Mg(OH)₂ from sea water or desalination concentrate, and to produce Mg metal using electrical energy with zero direct emissions. This talk will focus on two applications of Mg as a transportation fuel. For shipping, it will review progress on magnesium-air fuel cells, and introduce a new class of fuel cell which overcomes past limitations. For aerospace, a slurry of ~1 μm MgH₂ powder in liquid hydrocarbon fuel is both pumpable and slow to oxidize in air, with higher energy density than jet fuel (though lower specific energy) and fast combustion kinetics due to MgH₂ particle bursting; MgO nanoparticle emissions react with atmospheric CO₂ and water to form dilute MgCO₃ rain. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Magnesium, Sustainability |