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高排序的等级性宏观-中等孔碳支持的电催化剂,用于高效的氧气进化反应

Lanke Luo¹, Jingshen Xu¹, Qiuhong Wan¹

¹Center for Advanced Materials Research & College of Arts and Sciences, Beijing Normal University, Zhuhai, 519087, China.

Chemistry, an Asian journal

|December 24, 2023

概括

研究人员开发了一种新的仿生分层多孔催化剂 (3DOLP Co@NDC) 用于氧气进化反应 (OER). 这种先进的材料通过降低质量转移阻力,显著提高了催化性能.

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:

金属有机框架 (MOF) 为催化提供了大面积和可调节的结构.
MOF中的微孔结构可以阻碍质量转移,限制催化效率.
仿生等级结构激发了改善物质的运输和交换.

研究的目的:

在ZIF-67衍生物中设计和制造仿生分层多孔结构.
为了创建一个三维有序的层状多孔酸化碳涂层磁性催化剂 (3DOLP Co@NDC).
评估新材料的催化性能,用于氧气演化反应 (OER).

主要方法:

制造具有生物模拟分层多孔结构的ZIF-67衍生物.
用添加碳涂层,并结合磁性.
电化学表征以评估OER催化活性.

主要成果:

与Co@NDC (391 mV @ 10 mA cm−1) 相比,3DOLP Co@NDC催化剂表现出更优异的OER性能 (352 mV @ 10 mA cm−1).
生物模拟分层多孔结构增加了特定表面积和电化学活性面积.
观察到减少质量转移阻力和改善反应动力学.

结论:

引入一个三维有序的层层多孔结构可以提高OER的催化性能.
生物模拟孔隙设计有效地减轻MOF衍生的催化剂中的质量转移限制.
这种方法为开发高效电催化剂提供了一个有前途的战略.

关键词:

有序的巨孔结构.氧的演化反应反应的反应.有协同效应的效应.

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