Sulfide All-Solid-State Battery Hydrogen Sulfide Suppression
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Solution Overview
Problem
Sulfide all-solid-state batteries face challenges in suppressing hydrogen sulfide generation while maintaining battery performance, as conventional methods often result in increased battery resistance due to the trade-off between ion conductivity and power output.
Innovation Solution
Incorporating a composite electroconductive material with a basic material contained within the pores of a porous electroconductive material, such as Ketjen Black, into the cathode or anode layers, which reacts with moisture to absorb hydrogen sulfide without blocking ion conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a basic material is incorporated in a sulfide-based solid electrolyte battery to suppress hydrogen sulfide generation, then hydrogen sulfide generation is suppressed, but battery resistance increases
Solution Approach 1:
The patent utilizes a porous electroconductive material as the carrier for the basic material. The porous structure provides a large surface area and three-dimensional network that allows the basic material to effectively suppress hydrogen sulfide generation while maintaining electron conductivity pathways through the porous framework, thus resolving the contradiction between harmful factor suppression and reliability maintenance
Solution Approach 2:
The patent creates a composite electroconductive material by combining a basic material with a porous electroconductive material. This composite structure integrates the hydrogen sulfide suppression capability of the basic material with the electron conductivity of the porous electroconductive material, achieving both improved safety (reduced hydrogen sulfide) and maintained performance (low resistance)
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
Effectively reduces hydrogen sulfide generation and battery resistance while maintaining ion conductivity and power output, offering a superior solution to conventional methods.
Implementation Method 1
the basic material is contained in pores of the porous electroconductive material... which reacts with moisture to absorb hydrogen sulfide
Implementation Method 2
a composite electroconductive material containing a porous electroconductive material and a basic material... without blocking ion conductivity
Data Source
AI summary
Provided is a sulfide all-solid-state battery configured to suppress hydrogen sulfide generation and decrease battery resistance, wherein the sulfide all-solid-state battery comprises a cathode comprising a cathode layer, an anode comprising an anode layer, and a solid electrolyte layer disposed between the cathode layer and the anode layer; wherein the sulfide all-solid-state battery comprises a composite electroconductive material containing a porous electroconductive material and a basic material; wherein the basic material is contained in pores of the porous electroconductive material; and wherein the composite electroconductive material is contained in at least one of the cathode layer and the anode layer.