US2010330426A1PendingUtilityA1
Electrode Active Material and Method of Making The Same
Individually held — no corporate assignee on recordPriority: Dec 19, 2002Filed: Aug 31, 2010Published: Dec 30, 2010
Est. expiryDec 19, 2022(expired)· nominal 20-yr term from priority
H01M 2300/0037H01M 4/58C04B 2235/449H01M 4/5825C04B 2235/3262C01P 2002/72C04B 2235/3272C04B 2235/3277C04B 35/447C04B 2235/3203H01M 10/052H01M 4/382H01M 4/582C04B 2235/441H01M 4/136C04B 2235/3251C04B 2235/3206C04B 2235/3244C04B 2235/3239Y02E60/10
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Claims
Abstract
The invention provides an electrochemical cell which includes a first electrode and a second electrode which is a counter electrode to said first electrode, and an electrolyte material interposed there between. The first electrode includes an alkali metal phosphorous compound doped with an element having a valence state greater than that of the alkali metal.
Claims
exact text as granted — not AI-modified1 . A battery, comprising:
a first electrode comprising a compound represented by the general nominal formula:
[A a ,D d ]M m (XY 4 ) p Z e ,
wherein:
(i) A comprises at least one alkali metal, and 0<a≦9;
(ii) D is at least one element with a valence state of ≧2+, and 0<d≦1;
(iii) M comprises at least one redox active element, M is substituted by a stiochiometric amount of whereby M+[M m-u D v ] wherein u=v and 1≦m≦3;
(iv) XY 4 is selected from the group consisting of X′[O 4-x , Y′ x ], X′[O 4-y , Y′ 2y ], X″S 4 , [X′″ z , X′ 1-z ]O 4 , and mixtures thereof, wherein:
(a) X′ and X′″ are each independently selected from the group consisting of P, As, Sb, Si, Ge, V, S, and mixtures thereof;
(b) X″ is selected from the group consisting of P, As, Sb, Si, Ge, V, and mixtures thereof;
(c) Y′ is selected from the group consisting of a halogen, S, N, and mixtures thereof; and
(d) 0≦x≦3, 0≦y≦2, 0≦z≦1, and 1≦p≦3; and
(v) Z is selected from the group consisting of OH, a halogen, and mixtures thereof, and 0≦e≦4; wherein A, D, M, X, Y, Z, a, d, m, p, e, x, y and z are selected so as to maintain electroneutrality of the compound;
a second counter-electrode; and
an electrolyte.
2 . The battery of claim 1 , wherein A is Li.
3 . The battery of claim 1 , wherein D is a transition metal.
4 . The battery of claim 3 , wherein D is selected from the group consisting of Nb, Zr, Ti, Ta, Mo, and W.
5 . The battery of claim 1 , wherein D is selected from the group consisting of Mg, Zr and Nb.
6 . The battery of claim 1 , wherein A is partially substituted by D by isocharge substitution.
7 . The battery of claim 6 , wherein the compound is represented by the general nominal formula [A a-f ,D d ]M m (XY 4 ) p Z e , wherein f=d.
8 . The battery of claim 6 , wherein the compound is represented by the general nominal formula [A a-f ,D d ]M m (XY 4 ) p Z e , wherein f≠d.
9 . The battery of claim 1 , wherein A is partially substituted by D by aliovalent substitution.
10 . The battery of claim 9 , wherein the compound is represented by the general nominal formula
[
A
a
-
f
V
A
,
D
d
V
D
]
M
m
(
XY
4
)
p
Z
e
,
wherein f=d, V A is the oxidation state of A and V D is the oxidation state of D.
11 . The battery of claim 9 , wherein the compound is represented by the general nominal formula
[
A
a
-
f
V
A
,
D
d
V
D
]
M
m
(
XY
4
)
p
Z
e
,
wherein f≠d, V A is the oxidation state of A and V D is the oxidation state of D.
12 . The battery of claim 1 , wherein M is selected from the group consisting of Ti 2+ , V 2+ , Cr 2+ , Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , Mo 2+ , Si 2+ , Sn 2+ , and Pb 2+ .
13 . The battery of claim 1 , wherein M is selected from the group consisting of Ti 3+ , V 3+ , Cr 3+ , Mn 3+ , Fe 3+ , Co 3+ , Ni 3+ , Mo 3+ , and Nb 3+ .
14 . The battery of claim 1 , wherein M=MI n MII o , 0<o+n≦3 and 0<o,n, wherein MI and MII are each independently selected from the group consisting of redox active elements and non-redox active elements, wherein at least one of MI and MII is redox active.
15 . The battery of claim 1 , wherein MI is selected from the group consisting of Ti 2+ , V 2+ , Cr 2+ , Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , Mo 2+ , Si 2+ , Sn 2+ , Pb 2+ , and mixtures thereof and MII is selected from the group consisting of Be 2+ , Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ , Zn 2+ , Cd 2+ , Ge 2+ , and mixtures thereof.
16 . The battery of claim 1 , wherein M=M1 q M2 r , M3 s , wherein:
(a) M1 is a redox active element with a 2+ oxidation state; (b) M2 is selected from the group consisting of redox and non-redox active elements with a 1+ oxidation state; (c) M3 is selected from the group consisting of redox and non-redox active elements with a 3+ oxidation state; and (d) at least one of p, q and r is greater than 0, and at least one of M1, M2, and M3 is redox active.
17 . The battery of claim 1 , wherein XY 4 is selected from the group consisting of PO 4 , AsO 4 , SbO 4 , SiO 4 , GeO 4 , VO 4 , SO 4 , and mixtures thereof
18 . The battery of claim 1 , wherein p=1.
19 . The battery of claim 1 , wherein p=3.
20 . The battery of claim 1 , wherein XY 4 is PO 4 .Join the waitlist — get patent alerts
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