Hydrocarbon-Modified MXene Films for High-Temperature Conductivity Stability
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Solution Overview
Problem
Existing technologies fail to provide a material with satisfactory electrical conductivity stability, particularly in high-temperature environments.
Innovation Solution
A two-dimensional particle comprising a layer body represented by MmXn with modifiers or terminals T on its surface and a hydrocarbon compound, and a method for producing such a particle, and a method for producing such a particle by heating a precursor particle in the presence of an organic compound under specific conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MXene is obtained by immersing in HF solution and delamination is performed by hand shaking or ultrasonic treatment, then the layered structure is achieved, but the electrical conductivity stability is insufficient
Solution Approach 1:
The patent changes the chemical composition parameters by introducing specific terminal groups (T) on the MXene surface and incorporating hydrocarbon compounds. This modifies the material properties to achieve stable electrical conductivity while maintaining the layered structure, resolving the contradiction between reliability and manufacturing complexity.
Solution Approach 2:
The patent creates a composite structure by combining MXene layers with hydrocarbon compounds and specific terminal groups. This composite approach enhances electrical conductivity stability through the synergistic effects of the layered MXene structure and the stabilizing hydrocarbon components, while the overall process remains based on conventional manufacturing steps.
2Temperature
If conventional MXene synthesis methods are used, then the material can be produced, but the electrical conductivity decreases in high-temperature environments
Solution Approach 1:
The patent applies preliminary anti-action by pre-incorporating hydrocarbon compounds and specific terminal groups into the MXene structure before high-temperature exposure. These pre-installed protective elements prevent oxidation and degradation that would otherwise occur at high temperatures, thereby maintaining electrical conductivity stability without requiring post-processing protection measures.
Solution Approach 2:
The hydrocarbon compounds and specific terminal groups create an inert-like protective environment around the MXene layers, preventing harmful interactions with oxygen and other reactive species at high temperatures. This protective barrier maintains the electrical conductivity of the MXene even in elevated temperature conditions where conventional MXene would degrade.
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 two-dimensional particle suppresses the decrease in electrical conductivity, and preferably, a two-dimensional particle suppresses the decrease in electrical conductivity even in high-temperature environments.
Implementation Method 1
heating a precursor particle in the presence of an organic compound under conditions of an absolute pressure of less than 1,013 hPa and a boiling point of the organic compound or higher
Implementation Method 2
heating a precursor particle in the presence of an organic compound under conditions of an absolute pressure of less than 1,013 hPa and a boiling point of the organic compound or higher
Data Source
AI summary
A two-dimensional particle that includes: one or plural layers that comprise a layer body represented by: MmXn, wherein Mis at least one metal of Group 3, 4, 5, 6, or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; n is 1 to 4; and m is more than n but not more than 5, a modifier or terminal T exists on a surface of the layer body, wherein T is at least one selected from a hydroxyl group, a fluorine atom, a chlorine atom, an iodine atom, an oxygen atom, a chlorine atom, a phosphorus atom, and a hydrogen atom; and a hydrocarbon compound exists on the one or plural layers.