Objectives:

• Develop a design for a 1 kW, 28 volt Ni-MH battery with a specific energy of 100 W-hr/kg and an energy density of 250 W-hr/l
• Develop a battery to deliver 5 years life in low-Earth-orbit at 40% depth-of-discharge

Approach:

• Contracting activity with Electro Energy Corporation (EEI)
• Combine advance components and design features and systems level approach to battery design.
• Optional task for hardware delivery.

Features:

• Improve gravimetric and volumetric energy density as compared to state-of-the-art Ni-MH by using lightweight components
• Improve cycle life by increasing stability of negative hydride material
• Reduce battery cost for commercial satellites

Advantages:

• 2X specific energy of the state-of-the-art (SOA) IPV Nickel-Hydrogen (Ni-H₂) battery
• 2.5X the energy density of the SOA IPV Ni-H₂ battery
• 1/5 the cost of Ni-H₂ battery
• Compact batteries for small spacecraft

Applications:

• For future space missions:
  • LEO
  • GEO
  • Planetary Orbiters
  • Landers
• For ground:
  • Commercial consumer spinoffs - lawnmovers, computers, electric vehicles

Customers:

• Space Science
• MTPE
• HEDS
• Commercial
• DOD

[Power & On-Board Propulsion Technology Division]
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For more information, please contact NASA Responsible Official: Michelle A. Manzo, Chief, Electrochemistry Branch (216-433-5261)
Web Curator: Dawn Jenkins SGT, Inc.
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Last Updated: 11/07/2002