Fe Mg Ti Anode Current Collector for Fluoride Ion Battery
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Solution Overview
Problem
In fluoride ion batteries, the use of copper as an anode current collector leads to a reaction with the liquid electrolyte at high potential, resulting in decreased coulomb efficiency and potential malfunctions.
Innovation Solution
Employing a simple substance of Fe, Mg, or Ti, or their alloys as the anode current collector, which significantly decreases the potential at which the reaction with the liquid electrolyte occurs, thereby inhibiting the reaction and improving coulomb efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If copper is used as an anode current collector in a fluoride ion battery, then electrical conductivity and ease of manufacture are improved, but the material reacts with the liquid electrolyte at relatively high potential, decreasing coulomb efficiency
Solution Approach 1:
The patent changes the material parameter of the anode current collector from copper to iron, magnesium, or titanium. This parameter change fundamentally alters the electrochemical stability of the current collector, raising the potential at which electrolyte decomposition occurs and thereby improving coulomb efficiency while maintaining manufacturing feasibility
Solution Approach 2:
The patent employs iron, magnesium, or titanium as alternative current collector materials that are cost-effective and can be manufactured similarly to copper. These materials provide a practical, economical solution that maintains ease of manufacture while resolving the electrolyte reaction issue through their inherent electrochemical properties
2Use of energy by moving object
If copper is used as an anode current collector, then electrical conductivity is improved, but reaction with liquid electrolyte occurs at high potential, causing energy loss
Solution Approach 1:
The patent changes the material composition parameter from copper to iron, magnesium, or titanium, which fundamentally alters the electrochemical window of stability. This parameter change eliminates the high-potential electrolyte decomposition reaction that causes energy loss, while the new materials maintain sufficient electrical conductivity for battery operation
3Reliability
If a simple substance of Fe, Mg, or Ti or their alloys are used as anode current collectors, then the potential for reaction with liquid electrolyte is significantly decreased, but manufacturing complexity may increase
Solution Approach 1:
The patent selects iron, magnesium, and titanium as current collector materials because they are abundant, cost-effective metals with well-established metallurgical processing. Their alloys can be manufactured using conventional techniques, keeping manufacturing complexity manageable while achieving the desired electrochemical stability
Solution Approach 2:
The patent changes the material parameter to metals with higher electrochemical stability, which naturally resist electrolyte decomposition. This parameter change achieves improved coulomb efficiency without requiring complex device structures or manufacturing processes, as the improved performance arises from the inherent properties of the selected materials
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 use of Fe, Mg, or Ti as anode current collectors in fluoride ion batteries prevents reactions with the liquid electrolyte until lower potentials, enhancing coulomb efficiency and allowing for higher voltage batteries with reduced side reactions.
Implementation Method 1
it was found out that the potential, at which the reaction with the liquid electrolyte occurs, significantly decreases when a specific metal is used for an anode current collector
Data Source
AI summary
A main object of the present invention is to provide an anode current collector that is capable of inhibiting the reaction with liquid electrolyte. The present invention achieves the object by providing an anode current collector to be used for a fluoride ion battery; and the anode current collector being a simple substance of Fe, Mg, or Ti, or an alloy containing one or more of these metal elements.