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Published on: December 6, 2021
A study on the construction of spherical MnCO3-Cu2O composites with enhanced electrochemical lithium storage
Lei Wang1, Guifen Du1, Piyu Gong1
1Department of Chemistry, Liaocheng University, Liaocheng, Shandong 252059, P. R. China. wangl@ustc.edu.
Abstract:
In this work, thermodynamic multifunctional MnCO3-Cu2O composites with coral sphere shaped and pompon-like microstructures were constructed using a one chemical co-precipitation solvothermal process. The synergistic effect, the pseudocapacitive contribution and the p-n heterojunction enhance the electrochemical lithium storage performance and cycling stability of the formed MnCO3-Cu2O composites. At a current density of 2.0 A g-1, the coral sphere shaped MnCO3-Cu2O and pompon-like MnCO3-Cu2O electrodes exhibit discharge capacities of 804.6 mA h g-1 and 650.2 mA h g-1 after 400 cycles. The coral sphere shaped MnCO3-Cu2O microstructure exhibits excellent electrochemical performance. This study presents a design strategy for the construction of MnCO3-based composites that can be used in novel lithium-ion batteries.
