Organocatalyst Electrolyte Additive for Battery Anode Protection
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Solution Overview
Problem
Batteries face instability and security issues due to contact between the anode and residual water, leading to gas formation and electrolyte degradation, which existing methods attempt to address through water removal or protective coatings but require high energy and cost.
Innovation Solution
Incorporating an organocatalyst as an additive in the electrolyte, specifically carbonates, to facilitate the formation of a protective layer on the anode surface, preventing contact with residual water and reducing gas levels, using alkaloid or amidine compounds like 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) for effective polymerization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water removal methods are used to prevent anode-water contact, then battery stability is improved, but energy consumption and manufacturing cost increase
Solution Approach 1:
The patent applies preliminary action by forming a protective coating layer on the anode surface before the battery operates. This coating is created through a controlled reaction between carbonate electrolyte and the anode surface, which occurs during initial battery cycles. The coating prevents water contamination in advance, eliminating the need for extensive water removal processes and reducing energy consumption while maintaining battery stability.
Solution Approach 2:
The patent uses the carbonate electrolyte as an intermediary substance that mediates between the anode and water. The carbonate reacts with the anode surface to form a protective coating, and this coating then acts as an intermediary barrier that prevents direct contact between water and the anode, thereby protecting the battery without requiring high-energy water removal methods.
2Reliability
If protective coatings are applied to prevent anode-water contact, then battery stability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies self-service by enabling the battery system to form its own protective coating using components already present in the system. The carbonate electrolyte, which is already part of the battery, reacts with the anode surface to create the protective coating. This eliminates the need for external coating materials and complex coating application processes, reducing manufacturing complexity while improving battery stability.
Solution Approach 2:
The patent uses parameter changes by controlling the chemical environment within the battery to enable coating formation. By adjusting the composition of the electrolyte (including additives) and controlling operational parameters such as initial cycling conditions, the system promotes spontaneous coating formation on the anode, simplifying the manufacturing process compared to applying external coatings.
3Reliability
If organocatalyst additive is used to form protective layer, then battery stability is improved and energy cost is reduced, but electrolyte composition complexity increases
Solution Approach 1:
The patent applies universality by using the carbonate electrolyte to serve multiple functions: it acts as both the ion-conducting medium and the source of the protective coating material. The carbonate both facilitates battery operation and provides the carbon atoms needed for coating formation, eliminating the need for separate coating materials and simplifying the overall system despite the presence of organocatalyst additives.
Solution Approach 2:
The patent uses composite materials by creating a protective coating that is chemically integrated with the electrolyte composition. The coating is formed from carbonate species that are already part of the electrolyte system, creating a composite structure that combines the electrolyte's ion-conducting properties with the coating's protective properties, thereby managing complexity through material integration.
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 organocatalysts in electrolytes enhances battery stability and security by forming a protective polymer layer on the anode, reducing gas evolution and electrolyte degradation, while maintaining battery performance and reducing energy costs.
Implementation Method 1
The organocatalyst facilitates the reaction between the reactive groups and the carbonates, which leads to the formation of a protective layer on the surface of the anode
Implementation Method 2
using alkaloid or amidine compounds like 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) for effective polymerization
Data Source
AI summary
A use, in an electrolyte for a battery, of an additive which includes at least one organocatalyst. Also, a method of preventing the contact between the anode and residual water in a battery and/or reducing the level of gas in a battery. Moreover, an electrolyte for a battery, including an additive which includes at least one organocatalyst. Moreover, a battery including an electrolyte which includes an additive which comprises at least one organocatalyst.