Conductive Composition With Bonded Coating for Stable Metal Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing conductive compositions with metal particles face issues of unstable dispersion and insufficient conductivity due to weak interactions with conductive polymers, requiring high-temperature firing or solvent washing to remove non-conductive treatment agents, which is not feasible with diverse base materials.
Innovation Solution
A conductive composition featuring metal particles coated with a compound having a specific repeating structure represented by general formula (1), where a metal atom and nitrogen atom are chemically bonded, providing excellent dispersion stability and conductivity without the need for high-temperature treatment, achieved through a method involving heating a metal salt and the compound in an aqueous medium to form a precursor and then reducing it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a treatment agent is used to disperse metal particles in conductive composition, then dispersion stability is improved, but conductivity deteriorates due to the presence of non-conductive treatment agent
Solution Approach 1:
The patent changes the chemical parameters of the treatment agent by specifying a compound with a repeating structure containing nitrogen atoms that can form chemical bonds with metal particles. This chemical bonding capability distinguishes the invention from conventional treatment agents and enables both stable dispersion and maintained conductivity
Solution Approach 2:
The invention creates a composite structure where the treatment agent compound with repeating units contains both metal-coordinating groups (for bonding to metal particles) and conductive moieties (for maintaining conductivity). This composite molecular structure simultaneously addresses dispersion stability and conductivity requirements
2Reliability
If high-temperature firing treatment is performed to remove treatment agent, then conductivity is improved, but ease of manufacture deteriorates due to process complexity
Solution Approach 1:
The invention extracts the harmful non-conductive component (conventional treatment agent) and replaces it with a functional compound that inherently provides both dispersion and conductivity. This eliminates the need for post-application removal processes like high-temperature firing
Solution Approach 2:
The compound with repeating structure performs multiple functions simultaneously: it acts as a dispersant through chemical bonding to metal particles and as a conductive material through its own conductive properties. This self-service capability eliminates the need for separate treatment steps
3Stability of the object's composition
If conventional treatment agent is used, then dispersion stability is improved, but manufacturing precision deteriorates due to aggregation of metal particles
Solution Approach 1:
The patent changes the molecular structure parameters of the treatment agent to include repeating units with specific functional groups that provide optimal balance between metal particle coordination and steric stabilization, preventing aggregation while maintaining dispersion
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 enables the formation of a conductive image with excellent conductivity by simple post-treatment like drying, maintaining stability and conductivity without the need for high-temperature processing, suitable for various base materials.
Implementation Method 1
a metal atom in the metal particle and a nitrogen atom in the compound are chemically bonded to each other
Implementation Method 2
a conductive composition including: a metal particle; and a compound having a repeating structure... wherein a metal atom in the metal particle and a nitrogen atom in the compound are chemically bonded to each other
Data Source
AI summary
Provided is a conductive composition, which is excellent in dispersion stability of a metal particle, and with which a conductive image excellent in conductivity can be easily recorded by only performing simple posttreatment. The conductive composition is a conductive composition including: a metal particle; and a compound having a repeating structure represented by the following general formula (1) and having a weight-average molecular weight of from 1,000 to 100,000, wherein at least a part of a surface of the metal particle is coated with the compound, and a metal atom in the metal particle and a nitrogen atom in the compound are chemically bonded to each other.