三层聚合物电解质使碳效率高的CO2能够在性电解剂中转化为多碳产品
Jundong Wang1,2, Yuesheng Zhang1,2, Haoxiang Bai1,2
1Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China.
Angewandte Chemie (International ed. in English)
|July 20, 2024
概括
这项研究引入了三层聚合物电解质,用于性二氧化碳的减少,提高碳利用率. 新型电解质提高了效率,减少了能量损失,使二氧化碳转化更具经济可行性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 电化学二氧化碳减排 (CO2RR) 是碳利用的关键,但在性介质中面临挑战.
- 在性二氧化碳电解器中二氧化碳酸盐的形成会导致二氧化碳的损失和高能耗.
- 现有的方法在有效的二氧化碳转化和副产品管理方面扎.
研究的目的:
- 开发一种新的三层聚合物电解质 (TPE),用于高效的性CO2RR.
- 为了克服二氧化碳形成造成的二氧化碳损失问题.
- 提高二氧化碳利用技术的经济可行性.
主要方法:
- 一种由穿孔离子交换膜 (PAEM) 和双极膜 (BPM) 组成的TPE的制造.
- 将TPE集成到膜电极组件 (MEA) 中,用于KOH料反应堆中的CO2RR.
- 在TPE-MEA系统中将二氧化碳减排与甲氧化反应 (FOR) 结合起来.
主要成果:
- 在260 mA cm-2.2时,C2H4的法拉第效率为46%和C2+产品的效率为64%,达到法拉第效率 (FE).
- 在140 mA cm-2下,C2H4的单通转换率 (SPC) 为32%,是传统方法的1.3倍.
- 当与FOR相结合时,将全电池电压降低到2.3V在100mA cm-2时,保持高C2H4 FE.
结论:
- TPE有效地促进性CO2RR,通过同时实现高性和H+流量.
- TPE系统显著提高了二氧化碳转化效率,并减少了能源损失.
- 这种方法为具有成本效益和高效的电化学二氧化碳利用提供了一个有希望的途径.
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