ICP-MS辅助EDX断层扫描:一种强大的方法来研究应用于CO2电解的气体扩散电极中的电解质透现象
Alain Rieder1, Julia Lorenzetti1, Iván Zelocualtecatl Montiel1
1Department of Chemistry, Biochemistry and Pharmaceutical Sciences, NCCR Catalysis, University of Bern, Freiestrasse 3, Bern, 3012, Switzerland.
Small methods
|July 12, 2024
概括
本研究提出了一种新方法,用于监测二氧化碳 (CO2) 电解过程中气体扩散电极 (GDE) 中的电解质透率. 该技术使用ICP-MS辅助EDX断层扫描来确保几个小时的高效格式生产.
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:
- 用电化学方法减少二氧化碳 (CO2) 对于可持续的化学品生产至关重要.
- 气体扩散电极 (GDE) 是二氧化碳电解系统的关键组件.
- 了解GDE中的电解质透对于优化性能和寿命至关重要.
研究的目的:
- 在二氧化碳电解过程中调查碳纸基GDE中的电解质行为.
- 引入一种用于定量监测电解质透的新方法.
- 证明能够长时间保持高电解效率的能力.
主要方法:
- 在GDE中使用了一种甲(III) 亚碳酸盐催化剂,用于二氧化碳的电化学减排.
- 采用气体/电解质流量配置电解仪,在高电流密度下工作.
- 引入了感应合等离子体质谱 (ICP-MS) 辅助能量散射X射线 (EDX) 断层扫描,用于3D电解质分布分析.
主要成果:
- 在电解后,在整个GDE结构中观察到K2CO3/KHCO3沉物和显著的K+离子存在.
- 证明GDE湿并不一定意味着洪水,因为电解质可以用流出气体去除.
- 在几个小时内展示了持续高的电解效率,用于格式生产.
结论:
- 开发的ICP-MS辅助EDX断层扫描是一种强大且具有成本效益的方法,用于对GDE中电解质透的定量3D监测.
- 该研究提供了关于GDE内部电解质管理的见解,以有效地减少二氧化碳的电解质.
- 通过管理GDE结构内的电解质存在,可以保持高格式生产效率.
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