Project Title:

Bipolar Silver Metal Hydride Battery

94-1	10.03	2699

Bipolar Silver Metal Hydride Battery

Abstract:

The silver metal hydride (Ag-MH) battery system offers the 
potential of high energy density, sealed operation and safety for 
manned space applications. Conventional silver-zinc (Ag-Zn) 
batteries are only capable of 50-100 cycles before failure. The 
object of this project is to develop the technology to build Ag-MH 
batteries capable of hundreds of cycles and energy density greater 
than 125 Wh/kg at the cell level and 100 Wh/kg at the battery 
level, which would make this type of battery suitable 
for manned space applications. 
Electro Energy Inc. has successfully pioneered a bipolar nickel-
metal hydride (Ni-MH) battery. The bipolar design is patent 
pending. This novel packaging approach along with optimized 
components is proposed to demonstrate the viability of such a 
system for space applications.  

The main commercial application of this program would be in 
the utilization of the metal hydride electrode and bipolar 
batter,v packaging technology to other rechargeable batteries 
whose potential applications range from portable appliances to 
electric vehicles. Specialty small capacity commercial 
applications for Ag-MH batteries will also exist in cases 
where the expense of silver can be justified to achieve 
reduced weight and volume products.

KEY WORDS

Electro Energy, Inc.
Shelter Rock Lane
Danbury, CT  06810