Cooperative Design of Magnesium Ions with Cations or Anions in 2D VS<sub>2</sub> Electrodes.
basic_science · Level V
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- Record sourced from PubMed, PMID 40878029.
- Also identified by DOI 10.1021/acs.nanolett.5c03419.
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Abstract
Two-dimensional vanadium disulfide (VS<sub>2</sub>) is widely used in electrode materials for aqueous batteries but still suffers from limited capacity and rate. We designed an interlayer reaction based on VS<sub>2</sub> in synergy of Mg<sup>2+</sup> with conventional cations or anions (H<sup>+</sup>, NH<sub>4</sub><sup>+</sup>, OH<sup>-</sup>, NO<sub>3</sub><sup>-</sup>, F<sup>-</sup>, Cl<sup>-</sup>, and SO<sub>4</sub><sup>2-</sup>) (dividing these ions' workings into dual-ion batteries, Mg<sup>2+</sup>-anion co-(de)intercalation, and gap-filling). Relatively more suitable paired ions were recommended for each of the three mechanisms. Furthermore, combined with molecular dynamic simulation and experiments, the effectiveness of Mg<sup>2+</sup>/Cl<sup>-</sup> co-(de)intercalation in enhancing battery performance was verified. This work provides a new dimension for optimizing battery performance.