Chu Xuefeng, Wang Huan, Chi Yaodan, Wang Chao, Lei Lei, Zhang Wentong, Yang Xiaotian
Jilin Provincial Key Laboratory of Architectural Electricity & Comprehensive Energy Saving, School of Electrical and Electronic Information Engineering, Jilin Jianzhu University Changchun 130118 China
RSC Adv. 2018 Jan 9;8(4):2072-2076. doi: 10.1039/c7ra11373k. eCollection 2018 Jan 5.
Highly uniform and monodispersed CoVO hollow nanoprisms are successfully fabricated a simple hard-template-engaged strategy. In such synthesis, Co acetate hydroxide plays the important role of not only the cobalt source, but also the sacrificial template. After coating with a carbon layer, the as-obtained CoVO hollow nanoprisms exhibit apparently enhanced lithium-ion-battery performances. It has shown a high specific capacity of around 946 mA h g at a current density of 100 mA g, excellent cycling stability up to 300 cycles at a current density of 1 A g, and superior rate performance, which is much better than carbon coated solid CoVO samples.
通过一种简单的硬模板参与策略成功制备了高度均匀且单分散的CoVO空心纳米棱柱。在这种合成过程中，氢氧化钴乙酸盐不仅作为钴源，还充当牺牲模板。在包覆碳层后，所得到的CoVO空心纳米棱柱表现出明显增强的锂离子电池性能。在100 mA g的电流密度下，其比容量高达约946 mA h g，在1 A g的电流密度下循环300次仍具有出色的循环稳定性，并且具有优异的倍率性能，这比碳包覆的实心CoVO样品要好得多。
