标题
作者
作者:Wang, XJ (Wang, Xiaojun)[1 ]; Li, Y (Li, Yang)[1 ]; Jin, T (Jin, Ting)[1 ]; Meng, J (Meng, Jing)[1 ]; Jiao, LF (Jiao, Lifang)[1,2 ]; Zhu, M (Zhu, Min)[3,4 ]; Chen, J (Chen, Jun)[1,2 ]
期刊信息
摘要
Rational design of optimal bifunctional oxygen electrocatalyst with low cost and high activity is greatly desired for realization of rechargeable Zn-air batteries. Herein, we fabricate mesoporous thin-walled CuCo2O4@C with abundant nitrogen-doped nanotubes via coaxial electrospinning technique. Benefiting from high catalytic activity of ultrasmall CuCo2O4 particles, double active specific surface area of mesoporous nanotubes, and strong coupling with N-doped carbon matrix, the obtained CuCo2O4@C exhibits outstanding oxygen electrocatalytic activity and stability, in terms of a positive onset potential (0.951 V) for oxygen reduction reaction (ORR) and a low overpotential (327 mV at 10 mA cm(-2)) for oxygen evolution reaction (OER). Significantly, when used as cathode catalyst for Zn-air batteries, CuCo(2)O4@C also displays a low charge-discharge voltage gap (0.79 V at 10 mA crn(-2)) and a long cycling life (up to 160 cycles for 80 h). With desirable architecture and excellent electrocatalytic properties, the CuCo2O4@C is considered a promising electrocatalyst for Zn-air batteries.
关键词
作者关键词:Thin-walled CuCo2O4@C nanotubes; coaxial electrospinning; bifunctional oxygen electrocatalyst; Zn-air batteries
作者信息
通讯作者地址:Jiao, LF (通讯作者)
 | Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China. |
| Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300071, Peoples R China. |
地址:
电子邮件地址:jiaolf@nankai.edu.cn
出版商
类别分类
研究方向:Chemistry; Science & Technology - Other Topics; Materials Science; Physics
Web of Science 类别:Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter