A metal oxide nanostructured material and an electrochemical cell comprising the same
AssigneeNanyang Technological University
InventorsPooi See Lee, Xu Wang
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Abstract
A method for preparing a niobium, titanium or vanadium metal oxide nanostructured material is provided. The method comprises providing an aqueous reagent comprising (i) a soluble metal oxalate, and/or (ii) oxalic acid and a metal oxide precursor, adding a buffering agent to the aqueous reagent to form a mixture, and heating the mixture under hydrothermal conditions to obtain the metal oxide nanostructured material. The metal oxide nanostructured material may also be doped with a dopant metal such as titanium to enhance capacity and cycling stability. An electrode comprising the metal oxide nanostructured material, and an electrochemical cell containing the electrode are also provided.
Claims31
A method for preparing a metal oxide nanostructured material, the method comprising
- a) providing an aqueous reagent comprising (i) a soluble metal oxalate, and/or (ii) oxalic acid and a metal oxide precursor,
- b) adding a buffering agent to the aqueous reagent to form a mixture, and
- c) heating the mixture under hydrothermal conditions to obtain the metal oxide nanostructured material.
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A metal oxide nanostructured material prepared by a method comprising
- a) providing an aqueous reagent comprising (i) a soluble metal oxalate and/or (ii) oxalic acid and a metal oxide precursor;
- b) adding a buffering agent to the aqueous reagent to form a mixture, and
- c) heating the mixture under hydrothermal conditions to obtain the metal oxide nanostructured material.
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An electrochemical cell comprising an anode and a cathode, wherein the anode comprises a metal oxide nanostructured material prepared by a method comprising a) providing an aqueous reagent comprising (i) a soluble metal oxalate, and/or (ii) oxalic acid and a metal oxide precursor, b) adding a buffering agent to the aqueous reagent to form a mixture, and c) heating the mixture under hydrothermal conditions to obtain the metal oxide nanostructured material, and the cathode comprises a composite of an electrically conducting polymer and a carbon-based material.
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Dependencies are inferred from the claim text.