七度协调FeIII双功能复合体的战略合成,用于高效的水电解
Abhishikta Chatterjee1, Papri Mondal2, Priyanka Chakraborty1
1Department of Chemistry, Sidho-Kanho-Birsha University, 723104, Purulia, WB, India.
Angewandte Chemie (International ed. in English)
|July 21, 2023
概括
使用Fe协调复合体设计了高效的双功能电催化剂. 与C1相比,OSO桥梁复合体C2显示出较高的水电解活性,使得高性能性水电解剂成为可能.
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:
- 开发高效的电催化剂 (EC) 对水电解至关重要.
- 金属有机框架 (MOF) 为催化剂设计提供可调节的特性.
研究的目的:
- 设计和合成基于Fe协调复合体的新型异质双功能电催化剂.
- 为了研究连接物修饰对水电解的催化活性的影响.
主要方法:
- 合成Fe协调复合物[Fe2L2 (H2O) 2Cl2] (C1) 和[Fe2L2 (H2O) 2 (SO4) ]2 (CH4O) (C2) 的合成.
- 氧进化反应 (OER) 和进化反应 (HER) 的催化活性的电化学表征.
- 在性水电解仪中对C2的性能评估.
主要成果:
- 与C1.1相比,具有OSO桥梁的C2综合体表现出更高的双功能活动.
- C2显示出低的超电位 (140 mV OER,62 mV HER) 和小的Tafel斜率 (120.9 mV/dec OER,45.8 mV/dec HER).
- 使用C2的性水电解仪在10 mA cm−2时实现了1.54 V的电池电压,具有显著的稳定性.
结论:
- Fe 协调复合体的战略设计可以产生高效的双功能电催化剂.
- 连接物修饰,特别是硫酸盐的引入,显著提高了催化性能.
- 基于MOF的电催化剂为设计用于水分裂的先进分子催化剂提供了一个有希望的途径.
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