Cell and method of producing the same
AssigneeSharp Kabushiki Kaisha
InventorTetsuya Yoneda
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Abstract
A cell having a cell and a method of producing a cell element which includes a positive electrode and a negative electrode with a separator sandwiched therebetween and an electrolyte absorbed in the cell element is, characterized in that the separator in the cell is composed of a mixture of a binder the volume of which can be increased with the penetration of the electrolyte and an insulating support having an insulating property, the mixture being penetrated with the electrolyte, wherein the separator is so designed as to have a larger size than the outer periphery of the positive electrode and/or the negative electrode.
Claims16
A cell having a cell element which comprises a positive electrode, a negative electrode, a separator sandwiched between the positive and negative electrodes, and an electrolyte wherein the electrodes and the separator are formed from powdered materials which have been compressed, wherein the separator comprises a mixture of an insulating support and a binder which swells upon absorption of the electrolyte so that the separator has a larger outer periphery size than the outer periphery of the positive electrode and/or the negative electrode, and wherein the ratio of the binder to the insulating support in the separator is 1:1 to 1:4 by weight.
Dependencies are inferred from the claim text.