Templated formation of Mn2O3 derived from metal-organic frameworks with different organic ligands as anode materials for enhanced lithium-ion storage

Abstract

Traditional manganese trioxide (Mn2O3) as anode materials can be applied to lithium-ion batteries (LIBs), where it possesses excellent electrochemical performance. However, the inherent disadvantages of volume change and poor cycling stability during charge/discharge process hinder the application of transition metal oxide (TMO) in LIBs. Herein, we propose a method to derive Mn2O3 from metal-organic framework in order to mitigate volume change and enhance cycling stability, by virtue of the introduction of oxygen vacancies (OV) and stable template-derived structure for boosted lithium storage properties. Interestingly, M-BTEC (pyromellitic acid based MOF) -derived Mn2O3 represented higher specific capacity of 1227.1 mAh g−1 until 200 cycles with the current density of 0.1 A g−1 while M-IN (isonicotinic acid based MOF) shows 723.4 mAh g−1 with exceptional cycling stability.