Mesoporous materials can serve as well-performed electrode candidates for lithium-ion batteries (LIBs). Mesoporous manganese phosphonate (MnP) nanorods are composed of an interconnected network of pores that have high infiltration capacity for electrolyte and less tortuous transport pathways for lithium/electron charge carriers. The mesoporous architecture should also help alleviate stress from volume variation upon lithium intercalation/deintercalation cycles. We used MnP as an LIB anode and observed an initial reversible capacity of 420 mA h g-1 and a modest Coulombic efficiency of 68.7% at a relatively high current density of 144 mA g-1. The reversible capacity stabilizes at 253 mA h g-1 after 100 repetitive cycles, while most of the time, the Coulombic efficiency remains around 100%. The results show that, as a prospective LIB anode, the mesoporous MnP can achieve desirable capacity with decent durability and rate capability.
Bibliographical noteFunding Information:
This work was supported by the Deanship of Scientific Research (DSR), King Abdulaziz University (grant no. KEP-1-130-39), the Australian Research Council (ARC) Future Fellow (grant no. FT150100479), JSPS KAKENHI (grant nos. 17H05393 and 17K19044), and the research funds by Qingdao University of Science and Technology and the Suzuken Memorial Foundation. The authors would like to thank New Innovative Technology (NIT) for helpful suggestions and discussions on materials fabrication.
© 2018 American Chemical Society.
All Science Journal Classification (ASJC) codes
- Materials Science(all)