Energy storage system uses movable permeable tapes with cathode and electrolyte material that is drawn across an anode to produce electric power. The system features long shelf life, high efficiency, and flexible operation

Gruber, A.

Kafesjian, R. R.

English

NASA Technical Reports Server

Tapes 
March 1966	 Brief 66-10098 
00	
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U. S. space 
program and to encourage their commercial application. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
New Energy Storage Concept Uses Tapes 
Drive Sprockets
0
The problem: 
To develop an energy storage system competitive 
with existing battery and fuel cell systems. 
The solution: 
A system of movable permeable tapes with cathode 
and electrolyte material that may be drawn across an 
anode to produce electric power. The system features 
very long shelf life, high efficiency of electrolyte 
material utilization, and flexible operation.
How it's done: 
The present energy storage device is a dual tape 
system in which a roll of separator tape is coated on 
one side with silver peroxide in a water-soluble poly-
meric binder. A dispenser wets the second tape with 
an electrolyte solution, such as 30% to 40% aqueous 
KOH. The two tapes are drawn between two 
electrodes by a spring driven take-up mechanism. One 
electrode is made of zinc and acts as an anode, while 
the other is made of an inert conductive material such 
(continued overleaf) 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States 	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19660000098 2020-03-11T17:35:15+00:00Z
as silver and acts as a cathode. When the cam is 
rotated 900 to the left, it presses the anode against the 
tapes, which are in turn pressed against the cathode to 
provide good physical contact between the tapes, and 
the anode and cathode. 
Notes: 
1. A cathode utilization of 85% was attained at high 
current density (150 amp/ft2), and approached 
100% at lower current densities. 
2. The system has operated within the following 
parameters: 
Current Density	 up to 200 amp/ft2 
Tape Speed	 0.2 to 1.5 in/mm 
Electrode Contact Pressure 0.1 to 0.8 lb/in2 
Electrolyte Feed Rate	 0.15 to 0.3 cc/mm
Relatively incompatible couples can be used be-
cause activation takes place just prior to discharge. 
Patent status: 
Title to this invention has been waived under the 
provisions of the National Aeronautics and Space 
Act (42 U.S.C. 2457 (f)), to Monsanto Research 
Corporation, Everett 49, Massachusetts. 
Source: A. Gruber and Ralph R. Kafesjian
of Monsanto Research Corp. 
under contract to

Lewis Research Center
(Lewis-239)
0
. 
Brief 66-10092	 Category 02


New energy storage concept uses tapes

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