NEGATIVE ELECTRODE ACTIVE MATERIAL FOR ENERGY STORAGE DEVICES AND METHOD FOR MAKING THE SAME
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United States of America Patent
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Issued Date -
Sep 4, 2014
app pub date -
Feb 12, 2014
filing date -
Mar 1, 2013
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Abandoned
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Abstract
The described embodiments provide an energy storage device that includes a positive electrode including a material that stores and releases ion, a negative electrode including Nb-doped TiO2(B), and a non-aqueous electrolyte containing lithium ions. The described embodiments provide a method including the steps of combining at least one titanium compound and at least one niobium compound in ethylene glycol to form a precursor solution, adding water into the precursor solution to induce hydrolysis and condensation reactions, thereby forming a reaction solution, heating the reaction solution to form crystallized particles, collecting the particles, drying the collected particles, and applying a thermal treatment at a temperature >350° C. to the dried particles to obtain Nb-doped TiO2(B) particles.
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