Electrochemical cell employing a fine carbon additive
OwnerAkiya Kozawa, Shunzo Mase +1inventors
InventorsAkiya Kozawa, Shunzo Mase, Atsushi Sato
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Abstract
An electrochemical cell such as a lead acid cell, wherein fine carbon particles with or without an organic material is disposed in the electrolyte of the cell, deposited on the surface of the electrically active material of the cell and/or dispersed within the electrically active material of the cell.
Claims19
In an electrochemical cell comprising an electrochemically active material and an electrolyte wherein the improvement comprises an organic fine carbon composition comprising carbon and hydrophilic organic materials in the form of composite particles having a size between 0.08 to 0.3 .mu.m and said particles are disposed within the electrochemical cell.
A process for producing an organic fine carbon composition comprising carbon and hydrophilic organic materials in the form of composite particles for use in electrochemical cells comprising the step of producing a pasty mixture of carbon particles sized between 0.01 to 0.08 .mu.m and an organic polymer in a liquid and then grinding the pasty mixture with a sufficient force to produce a homogeneous organic fine carbon composition composed of carbon and organic materials in the form of composite particles sized between 0.08 to 0.3 .mu.m.
In an electrochemical cell comprising an electrochemically active material and an electrolyte wherein the improvement comprises ultra fine carbon particles having an average size of less than 0.08 .mu.m and disposed on the surface of the electrochemically active material or dispersed into the electrolyte of the cell.
Dependencies are inferred from the claim text.