Ilmenite Nanotubes for High Stability and High Rate Sodium-Ion Battery Anodes
Citations Over TimeTop 10% of 2017 papers
Abstract
To solve the problem of large volume change and low electronic conductivity of earth-abundant ilmenite used in rechargeable Na-ion batteries (SIBs), an anode of tiny ilmenite FeTiO3 nanoparticle embedded carbon nanotubes (FTO⊂CNTs) has been successfully proposed. By introducing a TiO2 shell on metal-organic framework (Fe-MOF) nanorods by sol-gel deposition and subsequent solid-state annealing treatment of these core-shell Fe-MOF@TiO2, such well-defined FTO⊂CNTs are obtained. The achieved FTO⊂CNT electrode has several distinct advantages including a hollow interior in the hybrid nanostructure, fully encapsulated ultrasmall electroactive units, flexible conductive carbon matrix, and stable solid electrolyte interface (SEI) of FTO in cycles. FTO⊂CNT electrodes present an excellent cycle stability (358.8 mA h g-1 after 200 cycles at 100 mA g-1) and remarkable rate capability (201.8 mA h g-1 at 5000 mA g-1) with a high Coulombic efficiency of approximately 99%. In addition, combined with the typical Na3V2(PO4)3 cathode to constitute full SIBs, the assembled FTO⊂CNT//Na3V2(PO4)3 batteries are also demonstrated with superior rate capability and a long cycle life.
Related Papers
- → Prelithiated Surface Oxide Layer Enabled High-Performance Si Anode for Lithium Storage(2019)102 cited
- → Towards a stable Li–CO2 battery: The effects of CO2 to the Li metal anode(2019)81 cited
- → SiOx/C anodes with high initial coulombic efficiency through the synergy effect of pre-lithiation and fluoroethylene carbonate for lithium-ion batteries(2021)46 cited
- → Effect of anode and cathode flow field geometry on passive direct methanol fuel cell performance(2015)20 cited
- → High Energy Density Lithium Battery(2018)1 cited