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US 12,304,825 B2Granted
Low vacancy Fe-substituted Mn-based prussian blue analogue
AssigneeNatron Energy, Inc.
InventorsAshenafi Damtew Mamuye, Daniel Friebel, Aniruddh Shrivastava
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Abstract
A system and method implementing and manufacturing transition metal cyanide coordination compounds (TMCCC) comprising Na, Fe, Mn, C, H, N, S, and O, wherein the TMCCC have 0-14% hexacyanometallate vacancies such as for application in electrochemical cells, including sodium ion secondary batteries; further including both sodium and potassium with and without sulfate.
Claims9
An electrochemical device, comprising:
- an electrically-conductive structure including a TMCCC represented by Formula II:
- Nab1Kb2Rbb3Csb4Frb5Tia1Va2Cra3Mna4Fea5COa6Nia7Cua8Zna9Caa10Mga11[R(CN)6]c vacr n(H2O)j(SO4) (Formula II);
- wherein R(CN)6 is a coordination complex selected from the group consisting of hexacyanoferrate, hexacyanocobaltate, hexacyanochromate, and hexacyanomanganate;
- wherein vac identifies an R(CN)6 vacancy;
- wherein ay, y=1 to 11, represent transition metal parameters;
- wherein bx, x=1 to 5 represent alkali metal parameters;
- wherein for each element of a first set of alkali metal parameters {b1, b2}, {b1, b2}>0;
- wherein for each element of a second set of alkali metal parameters {b3, b4, b5}, 0≤{b3, b4, b5};
- wherein for each element of the set {b1, b2, b3, b4, b5}, {b1, b2, b3, b4, b5}≤2;
- wherein b1+b2+b3+b4+b5≤2;
- wherein for each element of the set {a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11}, 0≤{a1, a2, a3, a6, a7, a8, a9, a10, a11}≤1;
- wherein for each element of the set {a4, a5}>0;
- wherein 0<c≤1;
- wherein 0≤r≤0.25;
- wherein 0≤j;
- wherein c+r=1;
- wherein 0≤n;
- and
- wherein b1>b2.
16 more elements
An electrochemical device, comprising:
- an electrically-conductive structure including a TMCCC represented by Formula II:
- Nab1Kb2Rbb3Csb4Frb5 Tia1Va2Cra3Mna4Fea5COa6Nia7Cua8Zna9Caa10Mga11[R(CN)6]c vacr n(H2O)j(SO4) (Formula II);
- wherein R(CN)6 is a coordination complex selected from the group consisting of hexacyanoferrate, hexacyanocobaltate, hexacyanochromate, and hexacyanomanganate;
- wherein vac identifies an R(CN)6 vacancy;
- wherein ay, y=1 to 11, represent transition metal parameters;
- wherein bx, x=1 to 5 represent alkali metal parameters;
- wherein for each element of a first set of alkali metal parameters {b1, b2}, {b1, b2}>0;
- wherein for each element of a second set of alkali metal parameters {b3, b4 b5}, 0≤{b3, b4, b5};
- wherein for each element of the set {b1, b2, b3, b4, b5}, {b1, b2, b3, b4, b5}≤2;
- wherein b1+b2+b3+b4+b5≤2;
- wherein for each element of the set {a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11}, 0≤{a1, a2, a3, a6, a7, a8, a9, a10, a11}≤1;
- wherein for each element of the set {a4, a5}>0;
- wherein 0<c≤1;
- wherein 0≤r≤0.25;
- wherein 0≤j;
- wherein c+r=1;
- wherein 0≤n;
- wherein j>0.
15 more elements
An electrochemical device, comprising:
- an electrically-conductive structure including a TMCCC represented by Formula II:
- Nab1Kb2Rbb3Csb4Frb5Tia1Va2Cra3Mna4Fea5COa6Nia7Cua8Zna9Caa10Mga11[R(CN)6]c vacr n(H2O)j(SO4) (Formula II);
- wherein R(CN)6 is a coordination complex selected from the group consisting of hexacyanoferrate, hexacyanocobaltate, hexacyanochromate, and hexacyanomanganate;
- wherein vac identifies an R(CN)6 vacancy;
- wherein ay, y=1 to 11, represent transition metal parameters;
- wherein bx, x=1 to 5 represent alkali metal parameters;
- wherein for each element of a first set of alkali metal parameters {b1, b2}, {b1, b2}>0;
- wherein for each element of a second set of alkali metal parameters {b3, b4, b5}, 0≤{b3, b4, b5};
- wherein for each element of the set {b1, b2, b3, b4, b5}, {b1, b2, b3, b4, b5}≤2;
- wherein b1+b2+b3+b4+b5≤2;
- wherein for each element of the set {a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11}, 0≤{a1, a2, a3, a6, a7, a8, a9, a10, a11}≤1;
- wherein for each element of the set {a4, a5}>0;
- wherein 0<c≤1;
- wherein 0≤r≤0.25;
- wherein 0≤j;
- wherein c+r=1;
- wherein 0≤n;
- wherein said TMCCC includes a monoclinic structure, a rhombohedral structure, a cubic crystal structure, or mixtures thereof;
- and
- wherein j>0.
17 more elements
Dependencies are inferred from the claim text.