Carbon Aerogel Precursor via Binder Phase Conversion
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Solution Overview
Problem
Conventional carbon aerogels require precise adjustment of carbon material length and diameter, leading to high preparation costs and suboptimal conductivity and pore characteristics, limiting their commercialization and effective use as electrodes.
Innovation Solution
A method for preparing a carbon aerogel precursor involving mixing a carbon material with a dispersant and solvent, adjusting concentration, and using a binder to form a gelated solution, which can be converted into a carbon aerogel with high specific surface area and conductivity without adjusting the carbon material's physical properties, allowing for phase conversion and diverse formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the length and diameter of carbon material are finely adjusted to prepare carbon aerogel, then the pore structure and conductivity can be optimized, but the preparation cost increases significantly
Solution Approach 1:
The invention extracts the critical dimension adjustment step from the preparation process. By using a binder that enables phase conversion, the method eliminates the need for precise carbon material dimension control while maintaining electrode performance through the binder's structural role during carbonization
Solution Approach 2:
The invention changes the key parameter from carbon material dimensions to binder properties (phase conversion capability and low carbonization ratio). This parameter shift allows preparation of high-performance carbon aerogels using carbon materials with unadjusted physical properties, significantly reducing preparation costs
2Reliability
If conventional organic aerogel is carbonized to prepare carbon aerogel, then the carbon aerogel can be obtained, but the conductivity and pore characteristics are insufficient
Solution Approach 1:
The binder serves as an intermediary substance that facilitates phase conversion and maintains the aerogel structure during carbonization. With a low carbonization ratio of 5-40%, the binder preserves pore characteristics while enabling the formation of a conductive carbon network, improving both conductivity and pore structure
Solution Approach 2:
The invention creates a composite system comprising carbon material and binder that work synergistically. The binder's phase conversion capability and low carbonization ratio enable the formation of a composite structure that maintains excellent pore characteristics while achieving high conductivity, overcoming the limitations of conventional carbonized aerogels
3Manufacturing precision
If precise adjustment of carbon material dimensions is required, then the aerogel structure can be controlled, but the manufacturing complexity and cost increase
Solution Approach 1:
The invention removes the dimension adjustment step from the manufacturing process by utilizing the binder's phase conversion properties. The binder controls the aerogel structure formation during phase transition, eliminating the need for precise carbon material dimension control while maintaining manufacturing precision
Solution Approach 2:
The binder performs self-organization during phase conversion, automatically forming the desired aerogel structure without external dimension control. This self-organizing capability simplifies the manufacturing process while ensuring consistent aerogel structure quality
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 method enables the production of carbon aerogels with enhanced specific surface area, conductivity, and mechanical properties, overcoming the limitations of conventional carbon aerogels by maintaining high conductivity and exhibiting desired pore characteristics without adjusting the carbon material's dimensions, thus facilitating their use in electrodes.
Implementation Method 1
mixing a binder which has a low carbonization ratio and is capable of performing phase conversion while using a carbon material
Implementation Method 2
mixing a carbon material and a dispersant with a solvent to prepare a carbon material dispersion
Implementation Method 3
dipping the gel type carbon aerogel precursor in ethanol to remove the dispersant
Data Source
AI summary
The present invention relates to a carbon aerogel precursor, a preparation method thereof and a carbon aerogel prepared thereby and, more particularly, to a carbon aerogel precursor which can be converted into a carbon aerogel that exhibits excellent specific surface area and physical properties by using a binder that has a low carbonization ratio and is capable of performing phase conversion while using a carbon material having physical properties such as diameter, length and the like that are not adjusted, a preparation method thereof, and a carbon aerogel prepared thereby.