Stationary Full Li-Ion Batteries with Interlayer-Expanded V6O13 Cathodes and Lithiated Graphite Anodes

摘要

Here we report a Li-metal-free full battery, using interlayer-expanded V6O13 ultra -thin nanosheets and prelithiated graphite for cathodes and anodes, respectively. This full Li-ion battery exhibits a superior specific capacity of 233 mAh g (1) at a current density of 100 mAg (1) and 91% capacity retention after 500 cycles. Our first -principle calculations reveal that the interlayer-expansion is induced by the interaction between V6013 and water which breaks interlayer V-O bonds and forms hydroxyls. The unique structure provides short lithium -ion diffusion path, excellent charge transport, abundant binding sites and volume flexibility for Li- intercalation/deintercalation, thus leading to high capability (280 mAh g (1)) and cycling performance (capacity retain 96.1% at 2.4 A g (1) for 1000 cycles). Using novel prelithiation process, the Li-metal-free full cells with high controllability and performance is expected to contribute significantly to the development of safe, green, and powerful energy storage devices. (C) 2016 Elsevier Ltd. All rights reserved.