Solid-State Battery Packaging Composite Oxide for Moisture and H2S Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current solid-state battery packaging materials face challenges with moisture barrier properties and hydrogen sulfide absorption, as common adsorbing substances like zeolites can re-release moisture when heated and have limited absorption capabilities, while metal oxides react with hydrogen sulfide, compromising moisture barrier properties.
Innovation Solution
A solid-state battery packaging material comprising a substrate layer, barrier layer, and sealant layer with a composite oxide containing a divalent metal and a trivalent metal, which effectively adsorbs moisture and hydrogen sulfide, maintaining barrier properties even at high temperatures and preventing hydrogen sulfide regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If zeolite is used as a moisture adsorbing substance, then moisture absorption is improved, but moisture barrier properties deteriorate at high temperatures due to moisture re-release
Solution Approach 1:
The patent changes the chemical composition parameter from conventional zeolite to a specific composite oxide with divalent and trivalent metals in a defined ratio. This parameter change enables the material to maintain stable hydration structure at high temperatures (100-130°C), preventing moisture re-release while maintaining absorption capacity. The specific metal composition and ratio are critical parameters that resolve the contradiction between absorption and barrier properties.
Solution Approach 2:
The patent uses a composite oxide material combining divalent and trivalent metals, which integrates the advantages of both metal types. The composite structure provides enhanced thermal stability compared to single-metal oxides, allowing the material to maintain its moisture adsorption capability while resisting moisture re-release at elevated temperatures, thus resolving the contradiction between absorption and barrier functions.
2Object-generated harmful factors
If metal oxide such as zinc oxide is used for hydrogen sulfide absorption, then hydrogen sulfide detoxification is improved, but moisture barrier properties deteriorate due to moisture generation from chemical reaction
Solution Approach 1:
The patent modifies the chemical composition by using a composite oxide of divalent and trivalent metals instead of single-metal oxides like ZnO. This parameter change alters the chemical reactivity profile, enabling the material to absorb hydrogen sulfide through surface adsorption rather than chemical reaction that generates moisture. The specific metal combination and ratio control the chemical behavior to prevent moisture generation.
Solution Approach 2:
The patent converts the potential harmful chemical reaction between metal oxide and hydrogen sulfide (which generates moisture) into a beneficial physical adsorption process. The composite oxide structure provides active sites for hydrogen sulfide adsorption without undergoing reactions that produce moisture, thus transforming a harmful side effect into a clean detoxification mechanism that simultaneously addresses both hydrogen sulfide removal and moisture control.
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 packaging material provides excellent moisture barrier and hydrogen sulfide absorption properties, preventing hydrogen sulfide generation and re-generation in solid-state batteries, even at elevated temperatures, thereby enhancing the safety and performance of solid-state batteries.
Implementation Method 1
the composite oxide can adsorb moisture and hydrogen sulfide
Implementation Method 2
the packaging material having excellent hydrogen sulfide absorption properties can absorb the hydrogen sulfide and detoxify the hydrogen sulfide
Data Source
AI summary
A solid-state battery packaging material at least includes: a substrate layer; a barrier layer; and a sealant layer laminated in this order, wherein at least one of the layers constituting the packaging material contains a composite oxide containing a divalent metal and a trivalent metal.