Fang Yongjin, Yu Xin-Yao, Lou Xiong Wen David
School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China.
Angew Chem Int Ed Engl. 2019 Jun 3;58(23):7744-7748. doi: 10.1002/anie.201902988. Epub 2019 May 2.
Metal sulfides with excellent redox reversibility and high capacity are very promising electrode materials for sodium-ion batteries. However, their practical application is still hindered by the poor rate capability and limited cycle life. Herein, a template-based strategy is developed to synthesize nitrogen-doped carbon-coated Cu S bullet-like hollow particles starting from bullet-like ZnO particles. With the structural and compositional advantages, these unique nitrogen-doped carbon-coated Cu S bullet-like hollow particles manifest excellent sodium storage properties with superior rate capability and ultra-stable cycling performance.
具有优异氧化还原可逆性和高容量的金属硫化物是非常有前景的钠离子电池电极材料。然而，其实际应用仍受到倍率性能差和循环寿命有限的阻碍。在此，开发了一种基于模板的策略，以子弹状ZnO颗粒为起始原料合成氮掺杂碳包覆的CuS子弹状空心颗粒。凭借结构和组成优势，这些独特的氮掺杂碳包覆CuS子弹状空心颗粒表现出优异的储钠性能，具有卓越的倍率性能和超稳定的循环性能。
