增强基于ZIF-67@Yeast建设的Co-N4-C单原子催化剂的共同加载的工程战略
Shuo Wu1, Xiaolong Xu1,2, Zelin Wang3
1Key Laboratory of Fine Chemicals in Universities of Shandong, Jinan Engineering Laboratory for Multi-Scale Functional Materials, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
ACS applied materials & interfaces
|August 15, 2023
概括
我们开发了一种新的策略,使用ZIF-67和酵母来制造高负载的--碳单原子催化剂 (SAC). 这些催化剂在空气电池中表现出色,原因是增强了Co负载和表面积.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 单原子催化剂 (SAC) 为储能和转化提供100%的原子利用.
- 在Co-N4-C SAC中增强 (Co) 负载仍然是一个提高性能的挑战.
- 氧化伊米达酸框架-67 (ZIF-67) 和酵母生物矿物化为催化剂制造提供了潜力.
研究的目的:
- 为了设计高原子负载的Co-N4-C单原子催化剂 (SAC).
- 为了研究ZIF-67@酵母结构对催化剂性能的影响.
- 优化催化剂结构,以提高电催化活性和耐用性.
主要方法:
- 使用ZIF-67@酵母生物矿物化策略制造Co-N4-C SACs.
- 利用酵母细胞的氨基基组进行Co2+离子定和ZIF-67构造.
- 催化剂结构,Co负荷和表面积的表征.
主要成果:
- 实现了高的C原子负荷 (12.18 wt %) 和特定表面积 (403.26 m2 g-1).
- 在空气电池中表现出极好的电催化动力学.
- 呈现出高放电电压 (1.08V在10mA cm-2) 与超过100小时的耐用性.
结论:
- 采用ZIF-67@酵母策略,成功地产生了高负载的Co-N4-C SAC.
- 高C荷载和表面积对于优越的电催化性能至关重要.
- 这种方法为开发用于能源应用的先进SAC提供了一个有希望的途径.
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