BN nanosheets in-situ mosaic on MOF-5 derived porous carbon skeleton for high-performance lithium-ion batteries

Graphite anode (specific capacity is only 372 mA h g(-1)) for lithium-ion batteries (LIBs) is not enough for high energy and high power density demands. In this work, MOF-5 was used as a precursor to prepare a porous carbon material embedded with BN (Boron Nitride), while B and N elements will enhance the electron transport speed thus improving the conductivity simultaneously. A large specific surface area of 1790.19 m(2) g(-1) was provided with this material because of embedding of lamellar BN, therefore it caused excellent cycling stability and high capacity characteristics in LIBs. The capacity retention is 1290 mA h g(-1) at 200 mA g(-1) and 683 mA h g(-1) at 2000 mA g(-1). This material provides a solution for improving the performance of LIBs, and it can also be a reference for the development in other fields. (C) 2020 Published by Elsevier B.V.

Automated summary

In this study, a porous carbon material embedded with BN was prepared using MOF-5 as a precursor, enhancing electron transport speed and conductivity, leading to high cycling stability and capacity characteristics in LIBs. This material exhibited a large specific surface area and high capacity retention in LIBs.