Metal-Air Battery Dual-Layer Cathode Ion Electron Path
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Metal-air batteries face performance degradation and life shortening due to chemical deterioration and electrolyte depletion, particularly when using organic-based electrolytes, which affect their energy density and cyclability.
Innovation Solution
A metal-air battery design featuring a cathode with a first layer providing a metal ion transfer path and a second layer offering an electron transfer path, both made from conductive materials with specific conductivity ratios, and an organic electrolyte-free configuration, along with a gas diffusion layer and solid electrolyte separator, to enhance ion and electron flow while minimizing reaction product accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-layer cathode is used, then the device complexity is low, but the ion transfer efficiency and electron transfer efficiency cannot be optimized simultaneously
Solution Approach 1:
The cathode is divided into two distinct layers: a first cathode layer in contact with the electrolyte that provides metal ion transfer paths, and a second cathode layer that provides electron transfer paths. This segmentation allows each layer to be optimized for its specific function, improving overall battery performance while maintaining manageable structural complexity.
2Ease of manufacture
If organic-based electrolytes are used, then the manufacturing cost is low, but chemical deterioration and electrolyte depletion occur
Solution Approach 1:
The invention changes the chemical composition parameter of the electrolyte from organic-based to inorganic-based materials. This parameter change eliminates the chemical deterioration and electrolyte depletion problems associated with organic electrolytes, significantly improving battery reliability and cycle life, though it may increase manufacturing complexity.
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
This design improves the battery's performance, extends its life, and prevents chemical deterioration, reducing manufacturing complexity and costs by optimizing ion and electron conductivity and avoiding electrolyte depletion.
Implementation Method 1
the first cathode layer provides a metal ion transfer path
Implementation Method 2
the second cathode layer provides an electron transfer path
Implementation Method 3
Oxygen reduction and oxidation reactions occur in the positive electrode
Implementation Method 4
a separator between the anode and the cathode
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A metal-air battery includes: an anode including a metal; a cathode spaced apart from the anode; and a separator between the anode and the cathode, wherein the cathode includes a first cathode layer including a first conductive material, and a second cathode layer disposed on the first cathode layer, the second cathode layer including a second conductive material, and wherein the first cathode layer provides a metal ion conduction path and the second cathode layer provides an electron transfer path.