Nanostructured Gas Barrier for Electrochemical Cell
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Solution Overview
Problem
Existing electrochemical cells face challenges in effectively blocking gases and moisture, which can lead to reduced lifespan and performance, particularly in portable electronic devices where flexible and efficient energy storage is required.
Innovation Solution
The electrochemical cell incorporates a housing with a third gas blocking layer comprising nanostructures, positioned between the first and second gas blocking layers, to enhance gas and moisture blocking capabilities, thereby preventing permeation into the internal area and extending the cell's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gas blocking layers are used in the housing, then the structure remains simple and manufacturing is easier, but gas and moisture blocking effectiveness is insufficient
Solution Approach 1:
The patent applies composite materials by integrating a third gas blocking layer containing nanostructures (such as nanotubes, nanowires, or nanoplates) into the housing structure. This composite layer is positioned between the first and second gas blocking layers to create a multi-layer composite barrier that significantly enhances gas and moisture blocking effectiveness while maintaining structural integrity.
Solution Approach 2:
The patent utilizes porous materials by incorporating nanostructures with controlled porosity into the third gas blocking layer. These nanostructured porous materials provide tortuous pathways that effectively block gas and moisture permeation while maintaining appropriate ion transport properties for battery operation.
2Reliability
If a third gas blocking layer with nanostructures is added to enhance blocking capability, then gas and moisture blocking is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-forming the third gas blocking layer containing nanostructures as a separate component before final housing assembly. This allows the nanostructured layer to be prepared and characterized independently, then integrated into the housing structure in a controlled manner, simplifying the overall manufacturing process despite the advanced material used.
Solution Approach 2:
The patent implements the nested doll principle by positioning the third gas blocking layer with nanostructures between the first and second gas blocking layers, creating a nested multi-layer structure. This arrangement allows each layer to be optimized independently while working together as an integrated barrier system, facilitating modular manufacturing and assembly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The integration of nanostructures in the gas blocking layer significantly improves the cell's ability to block gases and moisture, enhancing the electrochemical cell's lifespan and energy density, making it suitable for use in portable electronic devices.
Implementation Method 1
the third gas blocking layer includes a plurality of nanostructures... significantly improves the cell's ability to block gases and moisture, preventing permeation into the internal area
Data Source
AI summary
An electrochemical cell includes: an electrode assembly; and a housing including a first sheet and a second sheet, wherein the first sheet includes a first gas blocking layer, and a first sealing layer, and wherein the second sheet includes a second gas blocking layer and a second sealing layer, wherein the housing defines an accommodation region which accommodates the electrode assembly, which is disposed between the first sheet and the second sheet, and wherein the housing includes a bonded member, wherein the bonded member includes a third gas blocking layer disposed between the first gas blocking layer and the second gas blocking layer, wherein the third gas blocking layer includes a plurality of nanostructures.