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Sodium-Modulated, AMTEC Electrode Deposition

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
22632
Program Year/Program:
1994 / SBIR
Agency Tracking Number:
22632
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
ADVANCED MODULAR POWER SYSTEMS
4370 Varsity Drive Ann Arbor, MI 48108
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1994
Title: Sodium-Modulated, AMTEC Electrode Deposition
Agency: NASA
Contract: N/A
Award Amount: $69,872.00
 

Abstract:

A key component in the Alkali Metal Thermal to Electric Converter (AMTEC) is the electrode that is generally sputter deposited on the beta"-alumina solid electrolyte (BASE). Electrode deposition, as it is now practiced however, is a random process that covers active sites on the BASE and places many electrode pore openings at inactive sites. This proposal describes a novel fabrication process for improving electrode components of AMTEC cells. Exchange current densities will be increased by 500% at the BASE/electrode interface by selectively exposing all of the active sodium sites to the 3-phase electrode-BASE-sodium vapor boundary. The new process will selectively deposit the electrode only on the inactive sites of the BASE using the charge sensitive properties of the BASE to control where the electrode is deposited. This leaves the active sites of the BASE conduction plane at the electrode edges. This process will use the common electrode materials, Mo, W(Rh,Pt) and/or TiN. If successful, this process can increase the power output of an AMTEC cell by 50% without increasing the size or weight

Principal Investigator:

Robert C. Svedberg
3136774260

Business Contact:

Small Business Information at Submission:

Advanced Modular Power Systems
4667 Freedom Drive Ann Arbor, MI 48108

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No