Fluoride Ion Battery Integrated Electrode Layer Design
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Solution Overview
Problem
Conventional fluoride ion batteries require multiple components, increasing costs and complexity, whereas a simpler structure with fewer components is desirable for cost reduction and improved energy density.
Innovation Solution
A fluoride ion battery design featuring an electrode layer with fluorination and defluorination capabilities, a solid electrolyte layer with fluoride ion conductivity, and an anode current collector, where the power generating elements are formed by a combination of these two layers, eliminating the need for additional components like a cathode current collector, and optionally incorporating a bipolar structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional fluoride ion battery structure with 5 kinds of members is used, then reliable power generation is achieved, but manufacturing cost increases and device complexity increases
Solution Approach 1:
The patent combines the cathode current collector and cathode active material layer into a single integrated electrode layer. The electrode layer directly contacts the solid electrolyte layer and performs both current collection and electrochemical reactions, eliminating the need for separate components and reducing manufacturing complexity
Solution Approach 2:
The electrode layer serves multiple functions simultaneously: it acts as the cathode current collector, cathode active material layer, and provides structural support. This multi-functional design reduces the total number of components needed in the battery structure
2Quantity of substance
If conventional fluoride ion battery with separate cathode current collector and cathode active material layer is used, then functional reliability is maintained, but energy density decreases due to additional non-active components
Solution Approach 1:
By merging the cathode current collector and cathode active material layer into one integrated electrode layer, the patent eliminates inactive components that would otherwise occupy volume and add weight without contributing to energy storage, thereby increasing energy density
Solution Approach 2:
The patent extracts and eliminates unnecessary intermediate layers and separate current collectors that do not contribute to electrochemical reactions, keeping only the essential functional components needed for reliable operation
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 configuration reduces battery costs by minimizing components, enhances energy density, and enables self-forming power generating elements through fluorination and defluorination reactions, achieving efficient charge and discharge performance.
Implementation Method 1
a solid electrolyte layer containing a solid electrolyte material, the solid electrolyte material having fluoride ion conductivity
Implementation Method 2
an electrode layer that includes a first metal element or a carbon element and has capability of fluorination and defluorination
Data Source
Figure 1A~2B
Figure 3A~4
AI summary
An object of the present disclosure is to provide a fluoride ion battery of which power generating elements (a cathode active material layer, a solid electrolyte layer, and an anode active material layer) may be formed by two kinds of members: an electrode layer and a solid electrolyte layer. The present disclosure achieves the object by providing a fluoride ion battery comprising: an electrode layer that includes a first metal element or a carbon element and has capability of fluorination and defluorination; a solid electrolyte layer containing a solid electrolyte material, the solid electrolyte material including a second metal element with lower fluorination potential and defluorination potential than the potentials of the first metal element or the carbon element; and an anode current collector, in this order; and an anode active material layer being not present between the solid electrolyte layer and the anode current collector.