Highly Reversible Lithiation of Additive Free T‐Nb2O5 for a Quarter of a Million Cycles
Sean Cade Wechsler,
Alexander Gregg,
Morgan Stefik
Abstract:Fast energy storage via intercalation requires quick ionic diffusion and often results in pseudocapacitive behavior. The cycling stability of such energy storage materials remains understudied despite the relevance to lifetime cost. Orthorhombic niobium oxide (T‐Nb2O5) is a rapid ion intercalation material with a theoretical capacity of 201.7 mAh g−1 (Li2Nb2O5) and good cycling stability due to the minimal unit cell strain during (de)intercalation. Prior reports of T‐Nb2O5 cycling between 1.3–3.1 V versus Li/L… Show more
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