Rubeanic Acid Copper I Complex Conductive MOF

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Most metal-organic frameworks (MOFs) reported are insulators, and those showing electrical conductivity require uncommon ligands, making them impractical for industrial use as electrically conductive substances, particularly for non-aqueous secondary batteries.

Innovation Solution

A novel electrically conductive substance comprising a rubeanic acid-copper (I) complex is produced by reacting rubeanic acid and copper (I) compounds in the presence of a base, achieving high electrical conductivity, porosity, and heat resistance through the formation of coordination bonds between rubeanic acid ligands and copper (I) ions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If common ligands are used in MOFs, then cost and supply are improved, but electrical conductivity deteriorates

Engineering Contradiction:

Improvecost and supplyVSAvoidelectrical conductivity

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent changes the oxidation state parameter of copper from Cu(II) to Cu(I), which fundamentally alters the electronic structure and enables electrical conductivity in the MOF framework while using common rubeanic acid ligands

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite material system combining organic rubeanic acid ligands with inorganic Cu(I) ions in a coordinated framework, achieving both accessibility through common materials and functionality through the specific Cu(I)-ligand composite structure

Inventive Principle:

Principle #40Composite materials

2Reliability

If Cu(I) ions are used instead of Cu(II) ions, then electrical conductivity is improved, but stability deteriorates

Engineering Contradiction:

Improveelectrical conductivityVSAvoidstability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The rubeanic acid ligand acts as an intermediary that stabilizes the Cu(I) oxidation state through coordination bonding, preventing oxidation to Cu(II) while maintaining the electrical conductivity pathway through the Cu(I)-ligand framework

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates local stability at the Cu(I)-ligand coordination sites through the specific chemical environment provided by rubeanic acid, allowing Cu(I) to remain stable in this local region while the overall framework maintains conductivity

Inventive Principle:

Principle #3Local 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 novel rubeanic acid-copper (I) complex exhibits improved electrical conductivity, porosity, and heat resistance, enhancing the performance of electrochemical devices such as non-aqueous secondary batteries and fuel cells.

Implementation Method 1

coordination bonds are formed between rubeanic acid ligands and copper (I) ions

Methodology Applied

Scientific EffectCoordination bonding: Chemical Bonding

Data Source

PatentUS11349128B2Electrically conductive substance, method of producing electrically conductive substance, and electrode, catalyst and material containing electrically conductive substance

Publication Date: 2022.05.31 ZEON CORP

AI summary

Disclosed is an electrically conductive substance which comprises a complex containing rubeanic acid ligands and copper ions. The copper ions contained in the complex comprise copper (I) ions. The electrically conductive substance is produced by a production method which comprises mixing a rubeanic acid compound and a copper (I) compound in the presence of a base.