Quantitative Regulation of Interlayer Space of NH₄ V₄ O₁₀ for Fast and Durable Zn²⁺ and NH₄ ⁺ Storage.

ABSTRACT: Layered vanadium-based oxides are the promising cathode materials for aqueous zinc-ion batteries (AZIBs). Herein, an in situ electrochemical strategy that can effectively regulate the interlayer distance of layered NH₄ V₄ O₁₀ quantitatively is proposed and a close relationship between the optimal performances with interlayer space is revealed. Specifically, via increasing the cutoff voltage from 1.4, 1.6 to 1.8 V, the interlayer space of NH₄ V₄ O₁₀ can be well-controlled and enlarged to 10.21, 11.86, and 12.08 Å, respectively, much larger than the pristine one (9.5 Å). Among them, the cathode being charging to 1.6 V (NH₄ V₄ O₁₀ -C1.6), demonstrates the best Zn²⁺ storage performance

SUBMITTER: Li S 

PROVIDER: S-EPMC10037961 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature