简便合成一种MOF衍生的Co-N-C纳米结构作为可充电锌空气电池的双功能氧电催化剂。
Facile synthesis of a MOF-derived Co-N-C nanostructure as a bi-functional oxygen electrocatalyst for rechargeable Zn-air batteries.
作者信息
Luo Xinlei, Zheng Ziheng, Hou Bingxue, Xie Xianpan, Wang Cheng Cheng
机构信息
School of Entrepreneurship and Innovation, Shenzhen Polytechnic Shenzhen 518055 China
Aviation Engineering Institute, Civil Aviation Flight University of China Guanghan 618037 China.
出版信息
RSC Adv. 2023 Jun 21;13(27):18888-18897. doi: 10.1039/d3ra02191b. eCollection 2023 Jun 15.
A novel catalyst obtained from the pyrolysis of a Co/Fe/Zn zeolitic imidazolite framework was prepared as an oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electrocatalyst. The Co-N-C-900 catalyst displays promising ORR and OER activity with = 0.854 V and = 1.780 V. The rechargeable Zn-air battery equipped with a Co-N-C-900 cathode electrocatalyst illustrates a high peak power density of 275 mW cm, which is much superior than that of commercial 20% Pt/C. Significantly, the designed Zn-air battery with the Co-N-C-900 catalyst presents good cycling stability for 180 h in the rechargeable Zn-air battery.
通过对钴/铁/锌沸石咪唑骨架进行热解得到的一种新型催化剂被制备用作氧还原反应（ORR）和析氧反应（OER）的电催化剂。Co-N-C-900催化剂在ORR和OER中表现出有前景的活性，其E1/2为0.854 V，Ej为1.780 V。配备Co-N-C-900阴极电催化剂的可充电锌空气电池展示出275 mW cm的高峰值功率密度，这比商业20% Pt/C的峰值功率密度优越得多。值得注意的是，采用Co-N-C-900催化剂设计的锌空气电池在可充电锌空气电池中180小时内呈现出良好的循环稳定性。
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