Hermetically sealed storage battery

Claim 2

An electric storage battery having a positive electrode comprising a grid of titanium, a thin layer of nickel on the titanium, a dense layer of lead over the nickel and a coating of lead peroxide on said lead; a negative electrode comprising a grid of stainless steel, a thin layer of nickel on the stainless steel, a dense plating of lead on the nickel, a porous spongy coating of lead on said plated lead, and an electrolyte of sulfuric acid.

Claim 3

AN ELECTRIC STORAGE BATTERY HAVING A POSITIVE ELECTRODE COMPRISING A GRID OF TITANIUM, A THIN LAYER OF NICKEL ON THE TITANIUM, A DENSE LAYER OF LEAD OVER THE NICKEL AND A COATING OF LEAD PEROXIDE ON SAID LEAD, A NEGATIVE ELECTRODE COMPRISING A GRID OF STAINLESS STEEL, A THIN LAYER OF NICKEL ON THE STAINLESS STEEL, A DENSE PLATING OF LEAD ON THE NICKEL, A POROUS SPONGY

Claim 4

AN ELECTRIC STORAGE BATTERY HAVING A POSITIVE ELECTRODE COMPRISING A GRID OF TITANIUM, A THIN LAYER OF NICKEL ON THE TITANIUM, A DENSE LAYER OF LEAD OVER THE NICKEL AND A COATING OF LEAD PEROXIDE ON SAID LEAD, A NEGATIVE ELECTRODE COMPRISING A GRID OF STAINLESS STEEL, A THIN LAYER OF NICKEL ON THE STAINLESS STEEL, A DENSE PLATING OF LEAD ON THE NICKEL, A POROUS SPONGY

Claim 5

A hermetically sealed rechargeable cell comprising a container housing a positive electrode having a base of nickel plated titanium, a plating of lead over the nickel surface and a coating of lead peroxide over said lead; a negative electrode having a base of stainless steel of the type consisting preponderently of iron and the balance substantially all chromium and nickel; a thick nickel plate over the stainless steel and a coating of porous spongy lead over said nickel surface; a spacer between said electrodes filled with an electrolyte of gelled sulfuric acid containing in the order of 1% titanyl sulfate dissolved therein, a resin impermeable and electrolyte inert plastic film tightly wrapped around said electrodes and spacers and sealing the same, said sealed unit being hermetically sealed by encapsulation in an epoxy resin serving to maintain the cell elements in pressure contact, said plastic film preventing contact of the epoxy resin with the electrolyte and reaction therewith.

Claim 6

A hermetically sealed rechargeable cell comprising a container housing a positive electrode having a base of nickel plated titanium, a plating of lead over the nickel surface and a coating of lead peroxide over said lead; a negative electrode having a base of stainless steel of the type consisting preponderently of iron and the balance substantially all chromium and nickel; a thick nickel plate over the stainless steel and a coating of porous spongy lead over said nickel surface; a spacer between said electrodes filled with an electrolyte of gelled sulfuric acid containing in the order of 1% titanyl sulfate dissolved therein, a resin impermeable and electrolyte inert plastic film tightly wrapped around said electrodes and spacers and sealing the same, said sealed unit being hermetically sealed by encapsulation in an epoxy resin serving to maintain the cell elements in pressure contact, said plastic film preventing contact of the epoxy resin with the electrolyte and reaction therewith.

Claim 7

An electric storage battery having a positive electrode comprising a grid of titanium; a first thin layer of one of the metals nickel and cobalt on said titanium; a second layer of dense plated lead over said first layer; and a coating of lead peroxide electro-formed from a lead oxide mixture bonded to said second layer; a negative electrode comprising a grid of stainless steel having a thin layer of one of the metals nickel and cobalt and a dense plating of lead thereover; a porous spongy coating of lead on said dense plated lead; and an electrolyte consisting preponderently of sulfuric acid having a small amount of titanyl sulfate dissolved therein.

Claim 8

An electric storage battery having a positive electrode comprising a grid of titanium; a first thin layer of one of the metals nickel and cobalt on said titanium; a second layer of dense plated lead over said first layer; and a coating of lead peroxide electro-formed from a lead oxide mixture bonded to said second layer; a negative electrode comprising a grid of stainless steel having a thin layer of one of the metals nickel and cobalt and a dense plating of lead thereover; a porous spongy coating of lead on said dense plated lead; and an electrolyte consisting preponderently of sulfuric acid having a small amount of titanyl sulfate dissolved therein.

Claim 9

An electric storage battery according to claim 1 in which the sulfuric acid electrolyte contains a small amount of titanyl sulfate dissolvEd therein to inhibit attack on the titanium grid by said electrolyte.

Claim 10

An electric storage battery according to claim 1 in which the sulfuric acid electrolyte contains a small amount of titanyl sulfate dissolved therein to inhibit attack on the stainless steel grid by said electrolyte.

Claim 11

An electric storage battery according to claim 1 wherein the electrolyte is in the form of a gel and substantially immobilized.

Claim 12

An electric storage battery according to claim 1 wherein the positive electrode grid is composed of expanded titanium metal.

Claim 13

An electric storage battery according to claim 1 wherein the negative electrode grid is composed of expanded stainless steel.

Claim 14

An electric storage battery according to claim 1 wherein said battery is hermetically sealed.