Scalable chemical approach to prepare crystalline Mn_2V_2O_7 nanoparticles: introducing a new long-term cycling cathode material for lithium-ion battery

摘要

Herein, a new cathode material, Mn_2V_2O_7, for lithium-ion batteries is identified. A simple chemical method is proposed to synthesize newly identified Mn_2V_2O_7 material for large scale production. The synthesis of nanosized manganese vanadate in high yield with improved electrochemical performance toward lithium-ion battery applications is of fundamental and technological advancement. The newly identified Mn_2V_2O_7 holds a large reversible capacity of 242 mAh/g at 0.2 C rate with 82% of capacitance retention after 1442 cycles and thereby makes it suitable for lithium-ion battery fabrication. This long-term cycling is the highest reported for Mn_2V_2O_7 to the best of our knowledge.