{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Guo X"],"funding":["Priority Academic Program Development of Jiangsu Higher Education Institutions","Changjiang scholars program of the Ministry of Education","China Postdoctoral Science Foundation","National Natural Science Foundation of China","Natural Science Foundation of Jiangsu Province"],"pagination":["e2206084"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9896072"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["10(4)"],"pubmed_abstract":["Silicon suboxide (SiO<sub>x</sub> ) has attracted widespread interest as Li-ion battery (LIB) anodes. However, its undesirable electronic conductivity and apparent volume effect during cycling impede its practical applications. Herein, sustainable rice husks (RHs)-derived SiO<sub>2</sub> are chosen as a feedstock to design SiO<sub>x</sub> /iron-nitrogen co-doped carbon (Fe-N-C) materials. Using a facile electrospray-carbonization strategy, SiO<sub>x</sub> nanoparticles (NPs) are encapsulated in the nitrogen-doped carbon (N-C) frameworks decorating atomically dispersed iron sites. Systematic characterizations including high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and X-ray absorption fine structure (XAFS) verify the existence of Fe single atoms and typical coordination environment. Benefiting from its structural and compositional merits, the SiO<sub>x</sub> /Fe-N-C anode delivers significantly improved discharge capacity of 799.1 mAh g<sup>-1</sup> , rate capability, and exceptional durability, compared with pure SiO<sub>2</sub> and SiO<sub>x</sub> /N-C, which has been revealed by the density functional theory (DFT) calculations. Additionally, the electrochemical tests and in situ X-ray diffraction (XRD) analysis reveal the oxidation of Li<sub>x</sub> Si phase and the storage mechanism. The synthetic strategy is universal for the design and synthesis of metal single atoms/clusters dispersed N-C frameworks encapsulated SiO<sub>x</sub> NPs. Meanwhile, this work provides impressive insights into developing various LIB anode materials suffering from inferior conductivity and huge volume fluctuations."],"journal":["Advanced science (Weinheim, Baden-Wurttemberg, Germany)"],"pubmed_title":["Embedding Atomically Dispersed Iron Sites in Nitrogen-Doped Carbon Frameworks-Wrapped Silicon Suboxide for Superior Lithium Storage."],"pmcid":["PMC9896072"],"funding_grant_id":["U1904215","2022M722686","Q2018270","BK20200044"],"pubmed_authors":["Li W","Liu Y","Guo X","Li Q","Xu H","Pang H","Shi Y"],"additional_accession":[]},"is_claimable":false,"name":"Embedding Atomically Dispersed Iron Sites in Nitrogen-Doped Carbon Frameworks-Wrapped Silicon Suboxide for Superior Lithium Storage.","description":"Silicon suboxide (SiO<sub>x</sub> ) has attracted widespread interest as Li-ion battery (LIB) anodes. However, its undesirable electronic conductivity and apparent volume effect during cycling impede its practical applications. Herein, sustainable rice husks (RHs)-derived SiO<sub>2</sub> are chosen as a feedstock to design SiO<sub>x</sub> /iron-nitrogen co-doped carbon (Fe-N-C) materials. Using a facile electrospray-carbonization strategy, SiO<sub>x</sub> nanoparticles (NPs) are encapsulated in the nitrogen-doped carbon (N-C) frameworks decorating atomically dispersed iron sites. Systematic characterizations including high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and X-ray absorption fine structure (XAFS) verify the existence of Fe single atoms and typical coordination environment. Benefiting from its structural and compositional merits, the SiO<sub>x</sub> /Fe-N-C anode delivers significantly improved discharge capacity of 799.1 mAh g<sup>-1</sup> , rate capability, and exceptional durability, compared with pure SiO<sub>2</sub> and SiO<sub>x</sub> /N-C, which has been revealed by the density functional theory (DFT) calculations. Additionally, the electrochemical tests and in situ X-ray diffraction (XRD) analysis reveal the oxidation of Li<sub>x</sub> Si phase and the storage mechanism. The synthetic strategy is universal for the design and synthesis of metal single atoms/clusters dispersed N-C frameworks encapsulated SiO<sub>x</sub> NPs. Meanwhile, this work provides impressive insights into developing various LIB anode materials suffering from inferior conductivity and huge volume fluctuations.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Feb","modification":"2026-03-31T10:59:06.931Z","creation":"2025-04-19T13:31:40.469Z"},"accession":"S-EPMC9896072","cross_references":{"pubmed":["36470654"],"doi":["10.1002/advs.202206084"]}}