Fluoride-based hydrogen bond chemistry in a layered double hydroxide cathode toward high-performance aqueous NH₄⁺ storage.

ABSTRACT: In aqueous ammonium-ion storage, hydrogen bonds play a pivotal role in the reversible insertion/extraction of NH₄⁺ within transition metal oxides/hydroxides. Although fluorine (F) is known for its strong electronegativity and potential to form robust hydrogen bonds with NH₄⁺, its specific influence on NH₄⁺ storage remains unexplored. Herein, we systematically investigate the effects of F-based hydrogen bond chemistry within a layered double hydroxide matrix, where F species are introduced and subsequently partially removed via an electrochemical method. Our findings demonstrate that while increasing F doping content accelerates NH₄⁺ diffusion due to F's strong electronegativity, it also triggers crystal

SUBMITTER: Sun FF 

PROVIDER: S-EPMC11873911 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature