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富含的结合微孔聚合物与改进的 (II) 密度为高效电催化氧的演变

Yanzhe Li¹, Liang Wu², Keke Wang¹

¹State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.

ACS applied materials & interfaces

|February 7, 2024

概括

研究人员开发了一种新的基于的结合微孔聚合物 (CMP) 催化剂,用于高效的氧化演化反应 (OER). 这种地球上丰富的催化剂与基准相比显示出更高的性能,推进了电化学能源设备.

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:

氧进化反应 (OER) 对能量设备至关重要,但受到缓慢的动力学阻碍.
从地球上丰富的元素中开发高效的氧化演化催化剂 (OEC) 是一个关键的挑战.

研究的目的:

设计和合成一种具有丰富的OER协调位点的新型结合微孔聚合物 (CMP).
为了研究合成的CMP基催化剂的OER性能,并了解合物的作用.

主要方法:

通过将TBPT与Co(II) 氨酸合,合成合微孔聚合物 (CMP).
将CMP-Py(Co) 与CO2+离子进一步金属化,从而产生CMP-Py(Co) @Co.Co.
OER活动的电化学表征,包括超电位和Tafel斜率测量.
密度函数理论 (DFT) 计算以阐明催化机制.

主要成果:

CMP-Py(Co) @Co表现出极好的OER活动,具有较低的超电位 (285 mV与RHE) 和Tafel斜率 (80.1 mV dec-1).
与CMP-Py ((Co)) 相比,催化剂的CO2+含量和水亲和力更高.
CMP-Py(Co) @Co的表现优于基准RuO2和大多数报告的基于多孔有机聚合物的OEC.

结论:

增强的OER活动归因于CO2+离子的结合,创造了丰富的活性站点并增加了电化学表面积.
通过DFT计算,CO2+-TBPT站点被发现比CO2+-氨酸站点更活跃于OER.
开发具有丰富金属位点的CMP为设计高效的OEC提供了一个有希望的策略.

关键词:

富含的单体是富含的比皮里丁二氧化的使用.结合的微孔聚合物聚合物.网站密度高,网站密度高.氧气进化反应反应氧气进化反应氨酸是氨酸中的一种.

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