Coulombic-hinderance regulation on pyrovanadates for practicable calcium-ion batteries: a solid-solution strategy.

ABSTRACT: Pyrovanadates are considered a promising host material for the reversible intercalation of highly charged Ca²⁺ ions due to their favorable layered structure and the presence of rich interstitial confined species. However, in calcium-ion battery (CIB) systems, the diffusion kinetics of the Ca²⁺ ions are slower, and the electrostatic interactions are stronger (compared to Li⁺), which limits the effectiveness of pyrovanadate's structural advantages. In this study, we employ an allelic reconfiguration strategy to develop novel solid-solution phase pyrovanadate materials, specifically Zn_3-xCu _х (OH)₂V₂O₇·2H₂O (x = 0, 1, 1.5). By incorporating 'twin' isotopic Cu elements from the adjacent ds-block, we

SUBMITTER: Cao JM 

PROVIDER: S-EPMC12023857 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature