{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Kobayashi H"],"funding":["Advanced Low Carbon Technology Research and Development Program","Japan Society for the Promotion of Science"],"pagination":["3135-3142"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9933879"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["17(3)"],"pubmed_abstract":["Magnesium rechargeable batteries (MRBs) promise to be the next post lithium-ion batteries that can help meet the increasing demand for high-energy, cost-effective, high-safety energy storage devices. Early prototype MRBs that use molybdenum-sulfide cathodes have low terminal voltages, requiring the development of oxide-based cathodes capable of overcoming the sulfide's low Mg<sup>2+</sup> conductivity. Here, we fabricate an ultraporous (>500 m<sup>2</sup> g<sup>-1</sup>) and ultrasmall (<2.5 nm) cubic spinel MgMn<sub>2</sub>O<sub>4</sub> (MMO) by a freeze-dry assisted room-temperature alcohol reduction process. While the as-fabricated MMO exhibits a discharge capacity of 160 mAh g<sup>-1</sup>, the removal of its surface hydroxy groups by heat-treatment activates it without structural change, improving its discharge capacity to 270 mAh g<sup>-1</sup>─the theoretical capacity at room temperature. These results are made possible by the ultraporous, ultrasmall particles that stabilize the metastable cubic spinel phase, promoting both the Mg<sup>2+</sup> insertion/deintercalation in the MMO and the reversible transformation between the cubic spinel and cubic rock-salt phases."],"journal":["ACS nano"],"pubmed_title":["Ultraporous, Ultrasmall MgMn<sub>2</sub>O<sub>4</sub> Spinel Cathode for a Room-Temperature Magnesium Rechargeable Battery."],"pmcid":["PMC9933879"],"funding_grant_id":["JPMJAL1301","JP20H02436"],"pubmed_authors":["Tominaga Y","Iimura R","Nishimura N","Watanabe H","Ichitsubo T","Kobayashi H","Fukumi Y","Imai H","Mandai T","Nakayama M","Honma I"],"additional_accession":[]},"is_claimable":false,"name":"Ultraporous, Ultrasmall MgMn<sub>2</sub>O<sub>4</sub> Spinel Cathode for a Room-Temperature Magnesium Rechargeable Battery.","description":"Magnesium rechargeable batteries (MRBs) promise to be the next post lithium-ion batteries that can help meet the increasing demand for high-energy, cost-effective, high-safety energy storage devices. Early prototype MRBs that use molybdenum-sulfide cathodes have low terminal voltages, requiring the development of oxide-based cathodes capable of overcoming the sulfide's low Mg<sup>2+</sup> conductivity. Here, we fabricate an ultraporous (>500 m<sup>2</sup> g<sup>-1</sup>) and ultrasmall (<2.5 nm) cubic spinel MgMn<sub>2</sub>O<sub>4</sub> (MMO) by a freeze-dry assisted room-temperature alcohol reduction process. While the as-fabricated MMO exhibits a discharge capacity of 160 mAh g<sup>-1</sup>, the removal of its surface hydroxy groups by heat-treatment activates it without structural change, improving its discharge capacity to 270 mAh g<sup>-1</sup>─the theoretical capacity at room temperature. These results are made possible by the ultraporous, ultrasmall particles that stabilize the metastable cubic spinel phase, promoting both the Mg<sup>2+</sup> insertion/deintercalation in the MMO and the reversible transformation between the cubic spinel and cubic rock-salt phases.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Feb","modification":"2026-03-27T16:37:12.029Z","creation":"2025-04-04T10:36:11.983Z"},"accession":"S-EPMC9933879","cross_references":{"pubmed":["36669094"],"doi":["10.1021/acsnano.2c12392"]}}