Transition Metal Battery Electrodes to Avoid Dendrites and Flammability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current commercial batteries using alkali metals face challenges with flammability, dendrite formation, and processing complexity, making it difficult to balance capacity and stability.
Innovation Solution
A rechargeable transition metal battery design featuring a negative electrode made of transition metals or their alloys, a positive electrode with a carbon-based host material and a metal, chalcogen, or halogen compound, and a stable non-flammable electrolyte, which facilitates safe and efficient ion transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If alkali metals are used as working ions in commercial batteries, then high electric capacity can be achieved, but flammability and dendrite formation occur
Solution Approach 1:
The patent changes the working ion from alkali metal to transition metal, fundamentally altering the electrochemical parameters of the battery system. This substitution maintains high electric capacity while eliminating the flammability and dendrite issues associated with alkali metals, as transition metals have different electrochemical properties including lower reactivity and different ion transport characteristics
Solution Approach 2:
The patent employs composite electrode structures where transition metal materials are combined with conductive matrices and functional coatings. The negative electrode uses transition metal or alloy materials, while the positive electrode combines host materials with transition metal compounds, creating composite structures that optimize both capacity and stability simultaneously
2Use of energy by moving object
If alkali metals are used as working ions, then high electric capacity is achieved, but processing complexity and safety issues arise
Solution Approach 1:
By changing from alkali metal to transition metal working ions, the patent fundamentally alters the material processing requirements. Transition metals offer better processability with less stringent handling requirements, reduced safety precautions needed during manufacturing, and improved overall ease of manufacture while maintaining high electric capacity
3Ease of manufacture
If conventional battery materials are used, then manufacturing is simpler, but tolerance to moisture and oxygen is lower
Solution Approach 1:
The patent employs composite electrode structures where transition metal materials are combined with conductive matrices and functional coatings. The negative electrode uses transition metal or alloy materials, while the positive electrode combines host materials with transition metal compounds, creating composite structures that optimize both capacity and stability simultaneously
Solution Approach 2:
The patent employs protective coatings and sealed structures that create an inert environment for the electrode materials, protecting them from moisture and oxygen exposure during manufacturing and operation. This approach maintains manufacturing simplicity while significantly improving tolerance to environmental factors
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 solution provides a stable, non-flammable, and cost-effective battery with improved processing convenience, high tolerance to moisture and oxygen, and excellent cycle performance, reducing manufacturing complexity and costs while avoiding dendrite issues.
Implementation Method 1
The electrolyte is disposed between the positive electrode and the negative electrode
Implementation Method 2
a rechargeable transition metal battery includes a negative electrode, a positive electrode and an electrolyte
Data Source
AI summary
A rechargeable transition metal battery includes a negative electrode, a positive electrode and an electrolyte. The negative electrode includes a negative electrode material which is a transition metal or an alloy of the transition metal. The positive electrode is electrically connected to the negative electrode and includes a host material and a positive electrode material. The host material includes a carbon. The positive electrode material is connected to the host material, and the positive electrode material is a compound of a metal, an elemental chalcogen or an elemental halogen. The electrolyte is disposed between the positive electrode and the negative electrode.