Electrolysis Solution Gelation Prevention via Silicone Surfactant
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Solution Overview
Problem
Conventional electrolysis solutions for electrolytic capacitors face challenges in maintaining high spark voltage and heat resistance, as additives like sulfamic acid and colloidal silica either deteriorate quickly or cause gelation, leading to poor performance over time.
Innovation Solution
An electrolysis solution comprising a silicone surfactant, colloidal silica, an electrolyte salt, and an organic solvent, with specific ratios and types of components such as polyether-modified silicone and certain electrolyte salts, is used to prevent gelation and maintain high spark voltage and electric conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If colloidal silica is used as an additive to improve spark voltage, then initial spark voltage is improved, but the electrolysis solution gels during use and short-circuits, resulting in poor heat resistance
Solution Approach 1:
A silicone surfactant is introduced as an intermediary substance between the colloidal silica and the electrolyte components. The silicone surfactant adsorbs onto the surface of colloidal silica particles, forming a protective interface that prevents direct interaction between colloidal silica and electrolyte salts, thereby preventing gelation while preserving the spark voltage enhancement effect of colloidal silica
Solution Approach 2:
The invention creates a composite system combining silicone surfactant, colloidal silica, electrolyte salt, and organic solvent. This composite electrolysis solution leverages the synergistic effects of each component: colloidal silica enhances spark voltage, while silicone surfactant prevents gelation, and the electrolyte salt and organic solvent maintain conductivity, achieving both high spark voltage and excellent heat resistance
2Strength
If conventional additives (sulfamic acid, suberic acid, dodecyl phosphate) are used to improve spark voltage, then initial spark voltage is improved, but they deteriorate quickly during use, resulting in poor heat resistance
Solution Approach 1:
The invention changes the chemical composition parameters of the electrolysis solution by replacing conventional organic acid-based additives with inorganic colloidal silica and silicone surfactant. This parameter change transforms the system from one prone to thermal deterioration to one with superior thermal stability, as inorganic colloidal silica and silicone-based compounds exhibit much better heat resistance
Solution Approach 2:
The invention replaces short-living conventional additives that deteriorate quickly with long-living colloidal silica and silicone surfactant that maintain stable performance over extended periods. The colloidal silica particles remain stable and do not decompose during capacitor operation, ensuring consistent spark voltage and heat resistance throughout the product lifecycle
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 achieves stable high spark voltage and excellent heat resistance, preventing gelation and maintaining electric conductivity over a long period, thus enhancing the performance of electrolytic capacitors.
Implementation Method 1
an electrolysis solution for an electrolytic capacitor including at least a silicone surfactant, colloidal silica, an electrolyte salt, and an organic solvent
Implementation Method 2
an electrolysis solution for an electrolytic capacitor obtained by dissolving organic acid, inorganic acid, or salts thereof as an electrolyte in an organic solvent has been used
Data Source
AI summary
Provided is an electrolysis solution for an electrolytic capacitor, having high spark voltage and excellent electric conductivity and heat resistance to spark voltage, and an electrolytic capacitor using the electrolysis solution. An electrolysis solution for an electrolytic capacitor including at least a silicone-based surfactant, colloidal silica, an electrolyte salt, and an organic solvent, and an electrolytic capacitor using the electrolysis solution. Containing the silicone-based surfactant makes it possible to prevent charge balance of the colloidal silica from being lost.