Air cathode structure manufacture

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865438

Momyer, William R ^[1]; Littauer, Ernest L ^[2]

---

1. Palo Alto, CA
2. Los Altos Hills, CA

An improved air cathode structure for use in primary batteries and the like. The cathode structure includes a matrix active layer, a current collector grid on one face of the matrix active layer, and a porous, nonelectrically conductive separator on the opposite face of the matrix active layer, the collector grid and separator being permanently bonded to the matrix active layer. The separator has a preselected porosity providing low IR losses and high resistance to air flow through the matrix active layer to maintain high bubble pressure during operation of the battery. In the illustrated embodiment, the separator was formed of porous polypropylene. A thin hydrophobic film is provided, in the preferred embodiment, on the current collecting metal grid.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Lockheed Missiles & Space Company, Inc. (Sunnyvale, CA)
• Patent Number(s): US 4514474
• OSTI ID: 865438
• Country of Publication: United States
• Language: English

Related Subjects

air
cathode
structure
manufacture
improved
primary
batteries
matrix
active
layer
current
collector
grid
porous
nonelectrically
conductive
separator
opposite
permanently
bonded
preselected
porosity
providing
losses
resistance
flow
maintain
bubble
pressure
operation
battery
illustrated
embodiment
formed
polypropylene
hydrophobic
film
provided
preferred
collecting
metal
cathode structure
matrix active
current collector
electrically conductive
preferred embodiment
air flow
active layer
air cathode
bubble pressure
collector grid
current collecting
collecting metal
hydrophobic film
metal grid
conductive separator
/429/