CONDUCTIVE LITHIUM STORAGE ELECTRODE

• Main Authors: CHIANG, YET-MING, ANDERSSON, ANNA, M, BLOKING, JASON, T, CHUNG, SUNG-YOON
• Format: Patent
• Language: English; French
• Published: 10.07.2003
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

A compound comprising a composition A.(M'1−aM"a)y(XD 4 )z, ,(M'1−aM"a)y (DXD4)z, or Ax,(M'1−aM''a</s b>)y(X2D7)z, and have values such that x, plus y(l −a) times a formal valence or valences of M', plus ya times a formal valence or valence of M", is equal to z times a formal valence of the XD4, X2D7, or DXD4 group; or a compound comprising a composition (A1−aM"a)xM'y (XD4)z, (A1−aM"a)xM'y (DXD4)z (A1−aM"a)xM'< sb>y(X2D7)z and have values such that (1−a)x plus the quantity ax times the formal valence or valences of M" plus y times the formal valence or valences of M' is equal to z times the formal valence of the XD4, X2D7 or DXD4 group. In the compound, A is at least one of an alkali metal and hydrogen, M' is a first−row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M" any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001 < a ≤ 0.1, and x, y, and z are greater than zero. The compound can have a conductivity at 27° C of at least about 10−8 S cm. The compound can be a doped lithium phosphate that can intercalate lithium or hydrogen. The compound can be used in an electrochemical device including electrodes and storage batteries and can have a gravimetric capacity of at least about 80 mAh g while being charged discharged at greater than about C rate of the compound. A compound comprising a composition A.M'1-aM"ayXD4z, ,M'1-aM"ayDXD4z, or Ax,M'1-aM''ayX2D7z, and have values such that x, plus yl -a times a formal valence or valences of M', plus ya times a formal valence or valence of M", is equal to z times a formal valence of the XD4, X2D7, or DXD4 group or a compound comprising a composition A1-aM"axM'yXD4z, A1-aM"axM'yDXD4z A1-aM"axM'yX2D7z and have values such that 1-ax plus the quantity ax times the formal valence or valences of M" plus y times the formal valence or valences of M' is equal to z times the formal valence of the XD4, X2D7 or DXD4 group. In the compound, A is at least one of an alkali metal and hydrogen, M' is a first-row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M" any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001 < a <= 0.1, and x, y, and z are greater than zero. The compound can have a conductivity at 27° C of at least about 10-8 S/cm. The compound can be a doped lithium phosphate that can intercalate lithium or hydrogen. The compound can be used in an electrochemical device including electrodes and storage batteries and can have a gravimetric capacity of at least about 80 mAh/g while being charged/discharged at greater than about C rate of the compound. L'invention concerne un composé comprenant une composition Ax(M'1-aM''a)y(XD4)z, Ax(M'1-aM''a)y(DXD4)z ou Ax(M'1-aM''a)y(X2D7)z, et possédant des valeurs telles que x, plus y(1-a) fois une ou plusieurs valences formelles de M', plus ya fois une ou plusieurs valences formelles de M'', étant égale à z fois une valence formelle des groupes XD4, X2D7 ou DXD4 ; ou un composé comprenant une composition A1-a(M''a) xM'y)y(XD4)z, A1-a(M''a) xM'y)y(DXD4)z Ax(M'1- A1-a(M''a) xM'y)yX2D7)z et possèdent des valeurs telles que (1-a)x plus la quantité ax fois la ou les valences formelles de M'' plus y fois la ou les valences formelles de M' étant égale à z fois la valence formelle des groupes XD4, X2D7 ou DXD4. Dans le composé de l'invention, A représente au moins un métal alcalin et un hydrogène, M' représente un métal de transition de première ligne, X représente au moins un composé parmi le phosphore, le soufre, l'arsenic, le molybdénum, et le tungstène, M'' représente un des groupes de métal IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB et VIB, B représente au moins un composé parmi l'oxygène, l'azote, le carbone ou un halogène, 0,0001 < a </= 0,1, et x, y et z étant supérieurs à 0. Le composé de l'invention peut présenter une conductivité à 27 DEG C d'au moins environ 10-8 S/cm. Ce composé peut être un phosphate de lithium dopé pouvant intercaler du lithium ou de l'hydrogène et pouvant être utilisé dans un dispositif électrochimique comprenant des électrodes et des batteries de stockage. Le composé possède enfin une capacité gravimétrique d'au moins environ 80 mAh/g lorsqu'il est chargé/déchargé à un débit C supérieur au composé.