Transition metal hydroxy-anion electrode materials for lithium-ion battery cathodes
AssigneeArizona Board of Regents, A Body Corporate of the State of Arizona Acting for and On Behalf of Arizona State University
InventorCandace Chan
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Abstract
A transition metal hydroxy-anion electrode material for lithium-ion battery cathodes includes the charge-neutral structure Mx(OH)n(XO4)m, where M is one or more transition metals, x is the total number of transition metal atoms, X is sulfur or phosphorus, and x, n, and m are integers. (OH)n(XO4)m is a hydroxysulfate or hydroxyphosphate, and M can be one or more (e.g., a solid solution of) transition metals selected from the group consisting of copper, iron, manganese, nickel, vanadium, cobalt, zinc, chromium, and molybdenum. A lithium-ion battery may have a cathode including Mx(OH)n(XO4)m as a cathode material, and an electronic device may include a lithium-ion battery having a cathode including Mx(OH)n(XO4)m as a cathode material.
Claims22
An electrode for a lithium-ion battery, the electrode comprising a polyanion material including Mx(OH)n(XO4)m, wherein M is one or more transition metals, x is the total number of transition metal atoms, X is sulfur or phosphorus, and x, n, and m are integers, and wherein the polyanion material has a non-tavorite structure.
A method of forming an electrode for a lithium-ion battery, the method comprising:
- preparing a composition comprising a polyanion material including Mx(OH)n(XO4)m, wherein M is one or more transition metals, x is the total number of transition metal atoms, X is sulfur or phosphorus, and x, n, and m are integers, wherein the polyanion material has a non-tavorite structure;
- and
- disposing the composition on a current collector to form the electrode.
Dependencies are inferred from the claim text.