【Research Background】
In recent years, rechargeable lithium-ion batteries (LIBs) have frequently appeared in every corner of people‘s daily lives. Unfortunately, limited lithium resources and expensive prices severely hamper the further development of lithium. Sodium ion batteries (SIBs) have attracted widespread attention as potential substitutes for lithium ion batteries in the field of large-scale energy storage due to their rich sodium reserves and similar charge storage mechanisms on the earth.
[Achievement Profile]
Recently, the team of Professor Wu Songping from the School of Chemistry and Chemical Engineering of South China University of Technology published a research paper on the academic journal Chemistry Select, titled Hybrid Charge-Storage Route to Nb2CTx MXene as Anode for Sodium-Ion Batteries. The article reported a Nb2C MXene-based Sodium ion batteries have contributed to the further application of Nb2C in sodium ion batteries.
[Picture and text guide]
Figure 1. Basic physical characterization of Nb2C MXene
Figure 2. Nb2C-based half-cell performance test.
Figure 3. Analysis of related capacity contribution analysis.
Figure 4. Full-cell assembly test based on Na3V2 (PO4) 3 and Nb2C.
[Summary of this article]
Two-dimensional Nb2CTx MXene was synthesized by hydrothermal method and freeze-dried. For SIBs, 2D Nb2CTx MXene provides a stable reversible capacity of 102 mAh / g at a rate of 1.0 A / g after 500 cycles in a half-cell, and at a rate of 100 mA / g after 50 charge-discharge cycles in a full battery Capacity of 181 mAh / g. This unique layered structure can be fully maintained during the charge and discharge process, which accelerates the dynamic diffusion of ions in the two-dimensional layered structure. Therefore, Nb 2 CT x MXene is expected to become a negative electrode material for sodium ion batteries
Literature link
DOI: 10.1002 / slct.201903888
Source: MXene Frontier
