Scalable room-temperature synthesis of mesoporous nanocrystalline ZnMn2O4 with enhanced lithium storage properties for lithium-ion batteries.
In this work, we put forward a facile yet efficient room-temperature synthetic methodology for the smart fabrication of mesoporous nanocrystalline ZnMn2O4 in macro-quality from the birnessite-type MnO2 phase. A plausible reduction/ion exchange/re-crystallization mechanism is tentatively proposed herein for the scalable synthesis of the spinel phase ZnMn2O4. When utilized as a high-performance anode for advanced Li-ion battery (LIB) application, the as-synthesized nanocrystalline ZnMn2O4 delivered an excellent discharge capacity of approximately 1288 mAh g(-1) on the first cycle at a current density of 400 mA g(-1), and exhibited an outstanding cycling durability, rate capability, and coulombic efficiency, benefiting from its mesoporous and nanoscale structure, which strongly highlighted its great potential in next-generation LIBs. Furthermore, the strategy developed here is very simple and of great importance for large-scale industrial production.
School of Materials Science & Engineering, Anhui University of Technology, Ma'anshan, 243002 (P. R. China); Chinese Academy of Science (CAS), Key Laboratory of Materials for Energy Conversion, Hefei, 230026 (P. R. China). houlr629@163.com.
Changzhou
C
Yuan
Longhai
L
Zhang
Linrui
L
Hou
Lu
L
Zhou
Gang
G
Pang
Lin
L
Lian
batteries; electrochemistry; lithium; mesoporous materials; spinel phases