{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Liu W"],"funding":["National Natural Science Foundation of China (National Science Foundation of China)"],"pagination":["9889"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11564968"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["15(1)"],"pubmed_abstract":["K-containing polyanion compounds hold great potential as anodes for sodium-ion batteries considering their large ion transport channels and stable open frameworks; however, sodium storage behavior has rarely been studied, and the mechanism remains unclear. Here, using a noninterference KTiOPO<sub>4</sub> thin-film model, the Na<sup>+</sup> storage mechanism is comprehensively revealed by in situ/operando spectroscopy, aberration-corrected electron microscopy and density functional theory calculations. We find that incomplete K<sup>+</sup>/Na<sup>+</sup> ion exchange occurs and eventually 0.15 K<sup>+</sup> remains as a pillar to stabilize the tunnel structure. The pillar effect substantially maintains the volume change within 3.9%, much smaller than that of K<sup>+</sup>(Na<sup>+</sup>) in"],"journal":["Nature communications"],"pubmed_title":["Understanding pillar chemistry in potassium-containing polyanion materials for long-lasting sodium-ion batteries."],"pmcid":["PMC11564968"],"funding_grant_id":["52172229, 52072136, 52272201, 52302303 and 51972257"],"pubmed_authors":["Li Y","Liu J","Xia J","Sang X","Hu W","Cui W","Shang J","Yi C","Wang Z","Liu W"],"additional_accession":[]},"is_claimable":false,"name":"Understanding pillar chemistry in potassium-containing polyanion materials for long-lasting sodium-ion batteries.","description":"K-containing polyanion compounds hold great potential as anodes for sodium-ion batteries considering their large ion transport channels and stable open frameworks; however, sodium storage behavior has rarely been studied, and the mechanism remains unclear. Here, using a noninterference KTiOPO<sub>4</sub> thin-film model, the Na<sup>+</sup> storage mechanism is comprehensively revealed by in situ/operando spectroscopy, aberration-corrected electron microscopy and density functional theory calculations. We find that incomplete K<sup>+</sup>/Na<sup>+</sup> ion exchange occurs and eventually 0.15 K<sup>+</sup> remains as a pillar to stabilize the tunnel structure. The pillar effect substantially maintains the volume change within 3.9%, much smaller than that of K<sup>+</sup>(Na<sup>+</sup>) in","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Nov","modification":"2026-07-16T21:48:21.632Z","creation":"2025-04-07T04:30:14.175Z"},"accession":"S-EPMC11564968","cross_references":{"pubmed":["39543206"],"doi":["10.1038/s41467-024-54317-8"]}}