Journal of Electroceramics ( IF 1.7 ) Pub Date : 2023-03-08 , DOI: 10.1007/s10832-023-00305-1
Yun Yang , Jialin Gong , Dongming Cai , Yuxi Li , Yong Sun , Wei Wang , Chuanqi Feng
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The preparation of CuCo2O4 material with a suitable phase structure and grain size can improve its lithium storage performance. In this paper, CuCo2O4 hexagonal nanocrystal were successfully obtained by molten salt modified urea combustion method. Compared with the traditional high temperature solid state methods such as combustion method, rheological phase method and precipitation method, this method maintains the advantage of simple operation, and the particle size of the sample is smaller. The effect of heat treatment temperature on the lithium storage performance of CuCo2O4 was also studied systematically in this paper. The result shows that 800 ℃ is the best heat treatment temperature for CuCo2O4, and the sample synthesized by the molten salt urea combustion method exhibited the best electrochemical properties with a specific capacity of 705 mA h g-1 after 100 cycles under a constant current of 200 mA g-1 in the voltage range of 0.01-3 V. Therefore, a new strategy of high temperature solid state preparation has been developed in this paper, and the CuCo2O4 synthesized by this method is a promising anode material for lithium ion battery application.
中文翻译:
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熔盐改性燃烧法柔性合成CuCo2O4六方纳米晶作为高性能锂离子电池负极材料
制备具有合适相结构和晶粒尺寸的CuCo 2 O 4材料可以提高其储锂性能。本文采用熔盐改性尿素燃烧法成功获得了CuCo 2 O 4六方纳米晶。与燃烧法、流变相法、沉淀法等传统高温固相法相比,该方法保持了操作简单的优点,且样品粒径更小。本文还系统研究了热处理温度对CuCo 2 O 4储锂性能的影响。结果表明,800℃是CuCo 2 O 4的最佳热处理温度,熔盐尿素燃烧法合成的样品表现出最佳的电化学性能,恒压循环100次后比容量为705 mA hg -1 。在0.01-3 V电压范围内,电流可达200 mA g -1 。因此,本文提出了一种高温固相制备的新策略,通过该方法合成的CuCo 2 O 4是一种很有前景的负极材料用于锂离子电池应用。