材料科学
纳米颗粒
催化作用
碳化
碳纤维
化学工程
介孔材料
纳米技术
无机化学
化学
复合材料
有机化学
扫描电子显微镜
复合数
工程类
作者
Lianghao Song,Jing Zhang,Chengyu Huang,Chenfei Zhao,Xuemin Yin,Hongli Long,Yang Liu,Yufeng Zhao
标识
DOI:10.1002/asia.202300150
摘要
Design of non-noble metal electrocatalysts with high catalytic activity and stability to replace commercial Pt/C is crucial in the commercialization development of Zn-air batteries (ZABs). In this work, Co catalyst nanoparticles coupled with nitrogen-doped hollow carbon nanoboxes were well designed through zeolite-imidazole framework (ZIF-67) carbonization. As a result, the 3D hollow nanoboxes reduced the charge transport resistance, and the Co nanoparticles loaded on nitrogen-doped carbon supports exhibited excellent electrocatalytic performance for oxygen reduction reaction (ORR, E1/2=0.823 V vs. RHE), similar to that of commercial Pt/C. Moreover, the designed catalysts showed an excellent peak density of 142 mW cm−2 when applied on ZABs. This work provides a promising strategy for the rational design of non-noble electrocatalysts with high performance for ZABs and fuel cells.
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