Thin Operando Testing Cell with Hermetic Window
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Solution Overview
Problem
Current operando testing cells are undesirably thick and have limited analysis regions, making it difficult to perform simultaneous analysis of electrochemical, chemical, and morphological changes during chemical and electrochemical reactions.
Innovation Solution
The development of thinner operando testing cells with larger analysis regions, featuring a housing assembly with a window and ports for electrodes and wire conductors, allowing for hermetic sealing and compatibility with various analytical techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If current state-of-the-art operando testing cells are used, then hermetic sealing and structural integrity are achieved, but the cell thickness increases and analysis region is limited
Solution Approach 1:
The test cell is divided into separate functional components: a housing assembly, a removable lid, and a window assembly. This segmentation allows each component to be optimized independently - the housing provides structural integrity for hermetic sealing, while the window assembly provides a thin region for analysis. The components are assembled together to achieve both thin profile and reliable sealing.
Solution Approach 2:
The analysis region is extended in the lateral dimensions rather than reducing thickness in the vertical dimension. The window provides a large lateral area for analysis while maintaining a thin profile only where needed for spectroscopic access, allowing the bulk of the cell to maintain sufficient thickness for structural integrity and sealing.
2Area of stationary object
If current state-of-the-art operando testing cells are used, then structural integrity is maintained, but the analysis region size is limited
Solution Approach 1:
The window assembly is separated from the main housing, allowing the window to be positioned to maximize the analysis region area. The window can be made large in the lateral dimensions while the overall cell thickness is minimized by having the window occupy only a portion of the cell structure.
Solution Approach 2:
The cell structure has different thicknesses in different regions: the window region is thin to allow spectroscopic analysis, while other regions of the housing maintain sufficient thickness for structural integrity and hermetic sealing. This local variation in thickness allows both large analysis region and adequate structural strength.
3Area of stationary object
If a thin test cell design is implemented, then analysis region is improved, but hermetic sealing becomes difficult to achieve
Solution Approach 1:
The hermetic sealing function is separated into specific sealing interfaces between modular components (housing-lid interface, window-housing interface). Each interface can be designed with appropriate sealing features such as grooves, gaskets, or interference fits, making the sealing function easier to implement and verify in a thin cell design.
Solution Approach 2:
The sealing features are built into the molded housing and lid structures during manufacturing, rather than requiring post-assembly sealing operations. The housing includes integrated grooves and features that guide and secure sealing elements, ensuring hermetic sealing is achieved through the assembly process itself.
Data Source
AI summary
A test cell for operando testing comprises: a housing assembly defining at least a portion of an inner chamber; a window coupled to said housing assembly and defining another portion of the inner chamber; and at least one port for accommodating an electrode and/or conductive wire in communication with the inner chamber. The inner chamber is configured for receiving one or more samples undergoing a chemical and/or electrochemical reaction therein. The port is sealable to hermetically seal the inner chamber.