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US 6,333,127 B1Granted
Electrochemical cell and cell assembly process
AssigneeEveready Battery Company, Inc.
InventorLewis F. Urry
Life of this patent
Estimating the term…
Abstract
An electrochemical cell and method of assembling electrochemical cell having a container, an anode, a cathode, and a separator. The anode includes rounded zinc flakes coated on one surface with an absorbent gelling agent and disposed in the container. An electrolyte solution is added to the container so that at least some of the electrolyte is absorbed by the absorbent gelling agent. In addition, the zinc flakes, which may be disk-shaped, are oriented substantially perpendicular to side walls of the separator.
Claims31
An electrochemical cell comprising:
- a container;
- a first electrode disposed in said container;
- a second electrode disposed in said container and having an electrochemically active material, said electrochemically active material including a plurality of flakes coated on at least one surface with an absorbent gelling agent, wherein said flakes are substantially disk-shaped;
- and
- an electrolyte disposed in said container, wherein at least some of said electrolyte is absorbed by said absorbent gelling agent.
2 more elements
An electrochemical cell comprising:
- a container;
- a first electrode disposed in said container;
- a second electrode disposed in said container and having an electrochemically active material, said electrochemically active material including a plurality of flakes coated on at least one surface with an absorbent gelling agent, wherein said flakes are substantially disk shaped and have a diameter to thickness aspect ratio of at least ten;
- and
- an electrolyte disposed in said container, wherein at least some of said electrolyte is absorbed by said absorbent gelling agent.
2 more elements
An electrochemical cell comprising:
- a container;
- a first electrode disposed in said container;
- a second electrode disposed in said container and having an electrochemically active material, said electrochemically active material including a plurality of flakes coated on at least one surface with an absorbent gelling agent;
- an electrolyte disposed in said container, wherein at least some of said electrolyte is absorbed by said absorbent gelling agent;
- and
- a separator disposed between said first and second electrodes, wherein said flakes have a substantially planar surface oriented substantially perpendicular to an upstanding wall of said separator.
3 more elements
An electrochemical cell comprising:
- a container;
- a first electrode disposed in said container;
- a second electrode disposed in said container and having an electrochemically active material, said electrochemically active material including a plurality of flakes coated on at least one surface with an absorbent gelling agent;
- an electrolyte disposed in said container, wherein at least some of said electrolyte is absorbed by said absorbent gelling agent;
- and
- a layer of paper disposed between said electrochemically active material and said absorbent gelling agent.
3 more elements
An electrochemical cell comprising:
- a container;
- a first electrode disposed in said container;
- a separator disposed against said first electrode;
- and
- a second electrode disposed in said container and having an electrochemically active material, said electrochemically active material including a plurality of flakes having a substantially planar body, wherein said plurality of flakes are oriented substantially perpendicular to a wall of said separator.
2 more elements
A process of assembling an electrochemical cell, comprising the steps of:
- disposing a first electrode in a container;
- disposing a separator in said container and against a surface of said first electrode;
- providing a plurality of electrochemically active flakes;
- coating an absorbent gelling agent on at least one surface of said electrochemically active flakes;
- disposing said coated flakes in said container;
- orientating said flakes so that said flakes are substantially perpendicular to side walls of said separator;
- and
- disposing electrolyte solution in said separator so that the gelling agent absorbs at least some of the electrolyte solution.
5 more elements
A process of assembling an electrochemical cell, comprising the step of:
- disposing a first electrode in a container;
- disposing a separator in said container and against the surface of said first electrode;
- applying an absorbent gelling agent on a surface of an electrochemical active material;
- forming said electrochemically active material into a plurality of flakes, wherein said flakes are substantially disk-shaped;
- disposing said plurality of flakes of electrochemically active material in said container to provide a second electrode;
- and
- disposing electrolyte solution in said separator so that the gelling agent absorbs at least some of the electrolyte solution.
4 more elements
A process of assembling an electrochemical cell, comprising the steps of:
- disposing a first electrode in a container;
- disposing a separator in said container and against the surface of said first electrode;
- applying an absorbent gelling agent on a surface of an electrochemically active material;
- forming said electrochemically active material into a plurality of flakes, wherein said electrochemically active material comprises zinc;
- disposing said plurality of flakes of electrochemically active material in said container to provide a second,electrode;
- and
- disposing electrolyte solution in said separator so that the gelling agent absorbs at least some of the electrolyte solution, wherein said step of forming said electrochemically active flakes includes the steps of:
- forming a sheet of zinc material;
- applying said absorbent gelling agent to a surface of said zinc sheet;
- and
- punching out disk-shaped zinc flakes from said sheet.
8 more elements
A process of assembling an electrochemical cell, comprising the steps of:
- disposing a first electrode in a container;
- disposing a separator in said container and against the surface of said first electrode;
- applying an absorbent gelling agent on a surface of an electrochiemically active material;
- forming said electrochemically active material into a plurality of flakes;
- disposing said plurality of flakes of electrochemically active material in said container to provide a second electrode;
- vibrating said container to orient said flakes substantially perpendicular to a separator wall between said first and second electrodes;
- and
- disposing electrolyte solution in said separator so that the gelling agent absorbs at least some of the electrolyte solution.
5 more elements
Dependencies are inferred from the claim text.