US4060674A — Alkali metal anode-containing cells having electr…

Claim 1

Independent Claim 189 words

In an electrochemical cell which contains an alkali metal anode, a cathode and a non-aqueous electrolyte, the improvement comprising; using as said electrolyte one which consists essentially of: a. an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and b. electrolytically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula: ZMR.sub.n wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the Metal M.

Claim 2

Dependent Claim 189 words

In an electrochemical cell which contains an alkali metal anode, a cathode and a non-aqueous electrolyte, the improvement comprising; using as said electrolyte one which consists essentially of: a. an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and b. electrolytically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula: ZMR.sub.n wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the Metal M.

Claim 3

Dependent Claim 13 words

The cell of claim 1 wherein the cathode comprises a solid cathode-active material.

Claim 4

Dependent Claim 77 words

The cell of claim 2 wherein in the electrolyte, Z is an alkali metal selected from the group consisting of lithium, sodium, and potassium, M is a metal selected from the group consisting of B, Al, P and As, and wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 6 carbon atoms and a phenyl radical.

Claim 5

Dependent Claim 19 words

The cell of claim 3 wherein the cell is a secondary cell and the organic solvent is an ether.

Claim 6

Dependent Claim 50 words

The cell of claim 4 wherein, in the electrolyte, Z is lithium, wherein M is boron, and wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 4 carbon atoms.

Claim 7

Dependent Claim 25 words

The cell of claim 5 wherein said organic solvent is one or more ethers and wherein all of the organic radicals R are methyl radicals.

Claim 8

Dependent Claim 204 words

In an electrochemical cell which includes an anode having at least one alkali metal as its active material, a cathode having a lamellar transition metal chalcogenide as the cathode-active material and an electrolyte composition, the improvement wherein said electrolyte composition consists essentially of: a. an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and b. electrolytically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula: ZMR.sub.n wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the metal M.

Claim 9

Dependent Claim 204 words

In an electrochemical cell which includes an anode having at least one alkali metal as its active material, a cathode having a lamellar transition metal chalcogenide as the cathode-active material and an electrolyte composition, the improvement wherein said electrolyte composition consists essentially of: a. an organic solvent selected from the group consisting of inertly substituted and unsubstituted ethers, sulfones, organic sulfates, organic sulfites, organic nitrates and organic nitrites; and b. electrolytically active alkali metal salts including an electrolytically active amount of an organometallic alkali metal salt having the formula: ZMR.sub.n wherein Z is an alkali metal, wherein M is a metal selected from the group consisting of Zn, Cd, B, Al, Ga, Sn (stannous), In, Tl, P and As, wherein R represents n number of radicals which may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 8 carbon atoms, aryl radicals having 6 to 18 carbon atoms, and alkaryl and aralkyl radicals having 7 to 50 carbon atoms, subject to the proviso that at least one R is an alkyl radical, and wherein n is a numerical value equal to one plus the valence of the metal M.

Claim 10

Dependent Claim 78 words

The electrochemical cell of claim 7, in the electrolyte, wherein Z is an alkali metal selected from the group consisting of lithium, sodium, and potassium, M is a metal selected from the group consisting of B, Al, P and As, and wherein the organic radicals R may be the same or different and are inertly substituted and unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 6 carbon atoms and a phenyl radical.

Claim 11

Dependent Claim 30 words

The electrochemical cell of claim 8 wherein the anode-active material is lithium or alloys thereof, wherein the cathode-active material is titanium disulfide, and wherein, in the electrolyte, Z is lithium.

Claim 12

Dependent Claim 51 words

The electrochemical cell of claim 8 wherein, in the electrolyte, Z is lithium, wherein M is boron and wherein the organic radicals R may be the same or different and are inertly substituted or unsubstituted organic radicals selected from the group consisting of alkyl radicals having 1 to 4 carbon atoms.

Claim 13

Dependent Claim 25 words

The electrochemical cell of claim 8 wherein the concentration of the organometallic alkali metal salt in said solvent is about 0.1 to about 5 moles/liter.

Claim 14

Dependent Claim 15 words

The electrochemical cell of claim 9 wherein said organic solvent is one or more ethers.

Claim 15

Dependent Claim 27 words

The electrochemical cell of claim 10 wherein said organic solvent is one or more ethers and wherein all of the organic radicals R are all methyl radicals.

Claim 16

Dependent Claim 11 words

The electrochemical cell of claim 13 wherein the solvent contains dioxolane.

Claim 17

Dependent Claim 25 words

The electrochemical cell of claim 11 wherein the concentration of the organometallic alkali metal salt in said solvent is about 0.5 to about 3 moles/liter.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-11-28	1981-05-30	1981-11-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-11-28	1985-05-30	1985-11-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-11-28	1989-05-30	1989-11-29	$7700.00	Window Closed / Lapsed

Alkali metal anode-containing cells having electrolytes of organometallic-alkali metal salts and organic solvents

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