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开源的电化学电池用于在位X射线吸收光谱在传输和光模式

Hiram Lopez-Astacio¹, Brenda Lee Vargas-Perez², Angelica Del Valle-Perez¹

¹Department of Chemistry and Physics, Universidad Ana G. Mendez at Gurabo, Gurabo, Puerto Rico, USA.

Journal of synchrotron radiation

|February 2, 2024

概括

研究人员开发了一种开源的电化学细胞,用于现场X射线光谱. 这种设计可方便对各种材料中的反应动力学和机制进行详细研究,使得在传输和光模式下同时收集数据.

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
频谱学是一种光谱学.

背景情况:

使用X射线光谱的现场和操作性特征对于理解反应动力学和机制至关重要.
现有的电化学电池可能是复杂和昂贵的,限制了在位X射线吸收光谱的可访问性.

研究的目的:

设计,制造和测试一个开源,易于制造的电化学电池,用于在位X射线吸收光谱.
为了在传输和光模式下同时收集数据.
通过气体净化验证电池的性能,并评估潜在的工件.

主要方法:

使用3D CAD软件和爱好者CNC机器开发了一个开源的电化学电池设计.
制造了带有大开口角窗户的细胞,用于上游和下游的访问.
在碳纸上使用类似洋的碳纳米粒子 (1:3 Fe:Co 比率) 测试了细胞,用于X射线吸收光谱学 (XANES/EXAFS).
执行循环电压测量和带有或没有氧气净化时的时空测量,以评估细胞性能和器件.

主要成果:

制造的电化学电池表现出可靠的性能,没有增加的欧姆下降.
气体净化 (氧) 在0.4V与RHE的X射线吸收光谱 (XANES/EXAFS) 中没有引入人工物.
电池设计允许在传输和光模式下同时在现场进行X射线吸收光谱数据收集.

结论:

开源的电化学电池设计是可访问的,易于制造的,适合在现场的X射线吸收光谱.
这种设计提高了数据收集效率,并使同时传输和光测量成为可能.
该电池解决了诸如气体净化,离子电阻和防泄漏等实际挑战,使其成为材料研究的宝贵工具.

关键词:

埃克萨斯税收 (EXAFS) 是一个关税系统.在ORR催化剂的ORR催化剂.在现场 XAS 的电化学电池.

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