US 7,435,402 B2Granted

Method and apparatus for preparation of spherical metal carbonates and lithium metal oxides for lithium rechargeable batteries

AssigneeU Chicago Argonne LLC

InventorsSun-Ho Kang, Khalil Amine

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Abstract

A number of materials with the composition Li1+xNiαMnβCoγM′δO2−zFz (M′=Mg,Zn,Al,Ga,B,Zr,Ti) for use with rechargeable batteries, wherein x is between about 0 and 0.3, α is between about 0.2 and 0.6, β is between about 0.2 and 0.6, γ is between about 0 and 0.3, δ is between about 0 and 0.15, and z is between about 0 and 0.2. Adding the above metal and fluorine dopants affects capacity, impedance, and stability of the layered oxide structure during electrochemical cycling. Another aspect of the invention includes materials with the composition Li1+xNiαCoβMnγM′δOyFz (M′=Mg,Zn,Al,Ga,B,Zr,Ti), where the x is between 0 and 0.2, the α between 0 and 1, the β between 0 and 1, the γ between 0 and 2, the δ between about 0 and about 0.2, the y is between 2 and 4, and the z is between 0 and 0.5.

Claims4

Dependent claims

A method of preparing a mixed nickel-cobalt-manganese carbonate comprising the steps of:

dissolving in distilled water about 0.01M to about 2M of a metal solution comprising:
a nickel compound selected from the group consisting of Ni-acetate, Ni-nitrate, Ni-sulfate and combinations thereof;
a cobalt compound selected from the group consisting of Co-acetate, Co-nitrate, Co-sulfate, and combinations thereof;
and
a manganese compound chosen from the group consisting of Mn-acetate, Mn-nitrate, Mn-sulfate, and combinations thereof;
adding the metal solution to an aqueous solution of about 0.1M to about 5M of a carbonate chosen from the group consisting of ammonium hydrogen carbonate, sodium carbonate and combinations thereof;
aging the precipitates in the solution at a temperature increased from about 20° C. to about 65° C. wherein the solution is reacted at each temperature for about 1 h to about 24 h.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/903,514Filed 30 Jul 2004 · continuation in part
Priority: 1 Nov 2002
Published: US 2005/0058588 A117 Mar 2005
Granted: 14 Oct 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

H01M 4/582
Of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures,…:…
C01G 45/1228
Manganates or manganites with trivalent manganese, tetravalent manganese or mixtures thereof: of the type -, e.g. LiMnO2 or LiO2
C01G 51/50
Containing manganese: of the type n-, e.g. LiO2 or LiO2
C01G 53/502
Of the type n-, e.g. LiO2 or LiO2: containing lithium and cobalt

Family

Application60/423,347Us provisional application · filed 1 Nov 2002
Application10/699,484Parent of this continuation-in-part · filed 31 Oct 2003
US 2005/0058588 A1Pre-grant publication · published 17 Mar 2005
US 7,205,072 B2Parent of this continuation-in-part
US 2004/0091779 A1Published application
US 7,435,402 B2This patent

From the US filing history. Foreign family members aren’t listed.