Nano Letters · 2008 · 620 citations · 23 references
Natural SciencesMaterials EngineeringMaterials ScienceInorganic ChemistryMaterials ChemistryNanomaterialsBattery MaterialsCathode MaterialsElectrochemical Energy StorageElectrode MaterialsEnergy StorageMetal Oxide NanomaterialsCharge StorageCharge Storage MaterialsGalvanostatic TestingHydrothermal SynthesisLithium-ion BatteriesLithium-ion Battery Cathode MaterialsSpinel CathodesStorage Capacity
Spinel LiMn2O4 is a low-cost, environmentally friendly, and highly abundant material for Li-ion battery cathodes. Here, we report the hydrothermal synthesis of single-crystalline beta-MnO2 nanorods and their chemical conversion into free-standing single-crystalline LiMn2O4 nanorods using a simple solid-state reaction. The LiMn2O4 nanorods have an average diameter of 130 nm and length of 1.2 microm. Galvanostatic battery testing showed that LiMn2O4 nanorods have a high charge storage capacity at high power rates compared with commercially available powders. More than 85% of the initial charge storage capacity was maintained for over 100 cycles. The structural transformation studies showed that the Li ions intercalated into the cubic phase of the LiMn2O4 with a small change of lattice parameter, followed by the coexistence of two nearly identical cubic phases in the potential range of 3.5 to 4.3 V.
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Nanostructured materials for advanced energy conversion and storage devices
A.S. Aricò, Peter G. Bruce, Bruno Scrosati et al. · Nature Materials · 2005 · 8.8K citations
Natural Sciences, Materials Engineering, Materials Science +16
Electrodes with High Power and High Capacity for Rechargeable Lithium Batteries
Kisuk Kang, Ying Shirley Meng, Julien Bréger et al. · Science · 2006 · 2.6K citations
Natural Sciences, Materials Engineering, Materials Science +17