Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China.
ACS Appl Mater Interfaces. 2013 Jun 26;5(12):5508-17. doi: 10.1021/am400696x. Epub 2013 Jun 11.
A novel and facile approach was developed for the fabrication of amorphous double-shelled zinc-cobalt citrate hollow microspheres and crystalline double-shelled ZnCo2O4 hollow microspheres. In this approach, amorphous double-shelled zinc-cobalt citrate hollow microspheres were prepared through a simple route and with an aging process at 70 °C. The combining inward and outward Ostwald ripening processes are adopted to account for the formation of these double-shelled architectures. The double-shelled ZnCo2O4 hollow microspheres can be prepared via the perfect morphology inheritance of the double-shelled zinc-cobalt citrate hollow microspheres, by calcination at 500 °C for 2 h. The resultant double-shelled ZnCo2O4 hollow microspheres manifest a large reversible capacity, superior cycling stability, and good rate capability.
一种新颖且简便的方法被开发用于制备非晶态双层锌钴柠檬酸盐中空微球和晶态双层 ZnCo2O4 中空微球。在该方法中，通过简单的路线和在 70°C 的老化过程制备了非晶态双层锌钴柠檬酸盐中空微球。采用内向外 Ostwald 熟化过程来解释这些双层结构的形成。通过在 500°C 下煅烧 2 小时，可以制备出具有完美形态遗传的双层 ZnCo2O4 中空微球。所得双层 ZnCo2O4 中空微球表现出大的可逆容量、优异的循环稳定性和良好的倍率性能。
