Ultra-Thin Organic Electrolyte Capacitor Low ESR
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Solution Overview
Problem
Existing electrochemical energy storage devices face limitations in miniaturization, high temperature operation, and low equivalent series resistance (ESR), which restrict their performance and versatility in portable electronic devices.
Innovation Solution
The development of ultra-thin organic electrolyte capacitor devices with low ESR and expanded temperature range capabilities, achieved through the use of organic electrolytes, thin separators, and thermally stable sealants, allowing for efficient energy storage and release in compact designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional electrochemical energy storage devices are used, then energy storage capacity is achieved, but device size and weight are excessive for portable electronics
Solution Approach 1:
The patent employs ultra-thin separator films (few nanometers to micrometers thick) and thin-film electrode structures to dramatically reduce device thickness and weight while maintaining energy storage capacity. The thin-film construction allows the capacitor to be lightweight yet functional, directly addressing the weight constraint in portable electronics.
Solution Approach 2:
The invention changes the physical parameters of the electrolyte by using organic electrolytes with specific dielectric constants and viscosities, and by controlling the porosity and thickness of the separator to extreme values (few nanometers). These parameter changes enable high capacitance in a minimal volume and weight, resolving the contradiction between energy storage quantity and device weight.
2Volume of moving object
If device miniaturization is pursued, then portability is improved, but equivalent series resistance (ESR) increases and performance deteriorates
Solution Approach 1:
The ultra-thin separator (few nanometers to micrometers) reduces the distance for ion transport, thereby minimizing ionic resistance even in miniaturized devices. The thin-film construction maintains low ESR by ensuring short current paths and efficient ion conduction, allowing small devices to retain high performance.
Solution Approach 2:
The patent uses composite structures combining organic electrolytes with specific dielectric materials and conductive components. This composite approach optimizes the balance between miniaturization and low ESR by selecting materials with complementary properties: high dielectric constant for capacitance, low viscosity for ion mobility, and appropriate porosity for electrolyte penetration, ensuring low resistance even in compact form factors.
3Adaptability or versatility
If operating temperature range is expanded, then environmental adaptability is improved, but thermal stability and dimensional consistency become challenging
Solution Approach 1:
The invention selects organic electrolytes with carefully controlled viscosity and dielectric constant parameters that remain stable across a wide temperature range. The separator porosity and thickness are optimized to maintain structural integrity and ionic conductivity from -40°C to 70°C (or higher), ensuring dimensional stability while expanding operational temperature adaptability.
Solution Approach 2:
The use of composite materials—organic electrolytes combined with thermally stable separator and electrode materials—provides thermal resilience. The composite structure maintains dimensional consistency across temperature extremes through material selection that compensates for thermal expansion and contraction, enabling wide temperature operation without sacrificing structural stability.
4Length of stationary object
If ultra-thin construction is implemented, then device profile is reduced, but manufacturing precision and assembly difficulty increase
Solution Approach 1:
The patent employs ultra-thin separator films (few nanometers to micrometers) that are manufactured with controlled porosity and thickness uniformity. These thin films are designed to be flexible yet dimensionally stable, facilitating handling and assembly despite their minimal thickness. The manufacturing process controls film uniformity to ensure consistent performance, reducing assembly difficulty.
Solution Approach 2:
The separator and electrode structures are pre-assembled and pre-positioned with precise alignment features before final assembly. The ultra-thin components are manufactured with built-in alignment markers and attachment mechanisms that simplify the assembly process, reducing the precision burden during final assembly while maintaining the ultra-thin profile.
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
These devices provide enhanced power density, increased battery life, and improved dimensional stability at elevated temperatures, enabling their use in a wide range of electronic applications with reduced size and weight.
Implementation Method 1
electrochemical capacitor using an organic electrolyte
Implementation Method 2
electrochemical systems for storage and release of electrical energy
Data Source
AI summary
An ultra-thin electrochemical energy storage device is provided which utilizes electrode material with multi-layer current collectors and with an organic electrolyte between the electrodes. Multiple cells may be positioned in a plurality of stacks and all of the cells may be in series, parallel or some combination thereof. The energy storage device can be constructed at less than 0.5 millimeters thick and exhibit very low ESR and higher temperature range capabilities.