{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["13(12)"],"submitter":["Maiti N"],"pubmed_abstract":["We report a potassium manganese-iron hexacyanoferrate (KMnFeHCF) Prussian blue analog molecular magnet as a promising, low-cost, environmentally friendly cathode for metal-free ammonium-ion aqueous batteries. KMnFeHCF crystallizes in a face-centered cubic structure (Fm3m, lattice constant ≈ 10.19 Å) and exhibits a weak ferromagnetism, with Mössbauer spectroscopy confirming a mixed-valence Fe⁺<sup>3</sup>/Fe⁺<sup>2</sup> states. The material delivers a high specific capacity of ~145 mAh/g at 3 A/g, and ~130 mAh/g at 5 A/g along with excellent coulombic efficiency of 97%. Electrochemical performance is governed by reversible Fe²⁺/Fe³⁺ and Mn²⁺/Mn³⁺ redox transitions supported by the open-framework tunnel-like crystal structure which effectively accommodates structural distortions during ammo"],"journal":["Advanced science (Weinheim, Baden-Wurttemberg, Germany)"],"pagination":["e14287"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12948221"],"repository":["biostudies-literature"],"pubmed_title":["An Advanced High-Performance Ultrafast Ammonium-Ion Aqueous Battery Based on Dual-Metal Redox Open Framework Molecular Magnet."],"pmcid":["PMC12948221"],"pubmed_authors":["Mukadam MD","Meena SS","Maiti N","Bhatt P","Sharma MK","Samanta S"],"additional_accession":[]},"is_claimable":false,"name":"An Advanced High-Performance Ultrafast Ammonium-Ion Aqueous Battery Based on Dual-Metal Redox Open Framework Molecular Magnet.","description":"We report a potassium manganese-iron hexacyanoferrate (KMnFeHCF) Prussian blue analog molecular magnet as a promising, low-cost, environmentally friendly cathode for metal-free ammonium-ion aqueous batteries. KMnFeHCF crystallizes in a face-centered cubic structure (Fm3m, lattice constant ≈ 10.19 Å) and exhibits a weak ferromagnetism, with Mössbauer spectroscopy confirming a mixed-valence Fe⁺<sup>3</sup>/Fe⁺<sup>2</sup> states. The material delivers a high specific capacity of ~145 mAh/g at 3 A/g, and ~130 mAh/g at 5 A/g along with excellent coulombic efficiency of 97%. Electrochemical performance is governed by reversible Fe²⁺/Fe³⁺ and Mn²⁺/Mn³⁺ redox transitions supported by the open-framework tunnel-like crystal structure which effectively accommodates structural distortions during ammo","dates":{"release":"2026-01-01T00:00:00Z","publication":"2026 Feb","modification":"2026-07-16T22:20:41.451Z","creation":"2026-07-11T03:12:13.836Z"},"accession":"S-EPMC12948221","cross_references":{"pubmed":["41537242"],"doi":["10.1002/advs.202514287"]}}