Hetero-assembly of a Li4Ti5O12 nanosheet and multi-walled carbon nanotube nanocomposite for high-performance lithium and sodium ion batteries

摘要: A nanocomposite composed of crystalline Li4Ti5O12 (LTO) nanosheets and multi-walled carbon nanotubes (denoted as LTO/MWCNTs) is prepared for lithium/sodium storage via a facile hetero-assembly process driven by the screening effect electrostatic repulsion following thermal treatment. The morphology microstructure characterizations reveal that LTO are embedded in highly porous electrically conductive MWCNT network, thereby producing robust inner-connected architectures. Owing to improved electron ion transportation during electrochemical reaction rendered unique integrated architecture two-dimensional MWCNTs, exhibits excellent lithium sodium performances. For batteries, anode delivers reversible capacity 149.7 mA h g−1 at 10C after 500 cycles. As it has 82 5C. LTO/MWCNT great potential high-performance material dual applications batteries.