Lei Wang, Guifen Du, Piyu Gong, Chuansheng Cui, Shuo Tao, Haibo Li and Suyuan Zeng
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引用次数: 0
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.
本研究采用单化学共沉淀法溶剂热法制备了具有珊瑚球状和球团状微观结构的MnCO3-Cu2O热力学多功能复合材料。协同效应、赝电容贡献和p-n异质结增强了MnCO3-Cu2O复合材料的电化学储锂性能和循环稳定性。在2.0 a g−1电流密度下,珊瑚球状MnCO3-Cu2O和绒球状MnCO3-Cu2O电极在400次循环后的放电容量分别为804.6 mA h g−1和650.2 mA h g−1。珊瑚球状MnCO3-Cu2O微观结构表现出优异的电化学性能。本研究提出了一种构建可用于新型锂离子电池的mnco3基复合材料的设计策略。
期刊介绍:
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