Fluorinated Electrocatalyst LCE Regulation for Stable ORR Activity

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Solution Overview

Problem

Existing electrochemical cells face challenges in optimizing catalytic reactions due to the difficulty in controlling the local coordination environment (LCE) of atoms, particularly in large-dimension catalysts, leading to sluggish reactions and inferior stability, which hampers the performance of energy devices like direct ethanol fuel cells.

Innovation Solution

A fluorinated electrocatalyst is developed with a fluorine-doped metal-nonmetal-carbon (M/X&F-C) construct, where fluorine occupies the LCE site, preventing nonmetallic elements from occupying it, and forms weak metal-oxide bonds, enhancing stability and increasing the surface area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional M-X-C structures are fabricated to improve ORR kinetics, then catalytic activity is enhanced, but catalyst stability deteriorates due to oxidative corrosion of carbon

Engineering Contradiction:

Improvecatalyst stabilityVSAvoidoxidative corrosion

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful oxidative environment into a beneficial factor by using controlled oxidation to create fluorine-deficient sites on the carbon support. These sites then serve as anchoring positions for metal atoms, transforming the corrosive effect into a catalyst formation mechanism that enhances both activity and stability

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If fluorine atoms are introduced to occupy LCE sites, then catalyst stability and anti-corrosion properties are improved, but catalytic activity may be reduced due to site blockage

Engineering Contradiction:

Improveanti-corrosion propertiesVSAvoidcatalytic reaction efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies local quality by creating spatially differentiated fluorine distribution: fluorine-rich regions provide stability and anti-corrosion protection, while fluorine-deficient regions maintain catalytic activity. This heterogeneous distribution allows simultaneous optimization of both stability and productivity

Inventive Principle:

Principle #3Local quality

3Productivity

If heteroatoms are embedded into carbon supports to form M-X-C coordinations, then ORR kinetics are improved, but manufacturing precision deteriorates due to difficulty in controllably regulating LCE

Engineering Contradiction:

ImproveORR kineticsVSAvoidLCE regulation control

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by pre-introducing fluorine atoms into the carbon support structure before metal deposition. This pre-positioning of fluorine creates predetermined anchoring sites that guide metal atom placement, enabling precise control over the final M-X-C coordination structure and LCE composition

Inventive Principle:

Principle #10Preliminary action

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 fluorinated electrocatalyst achieves high stability with 70% retention after 20,000 cycles and continuous operation for 2,500 hours, with negligible byproducts and improved electron transfer, optimizing catalytic reactions in electrochemical cells.

Implementation Method 1

fluorine atoms may be chemically bonded to the X-C structure, forming a fluorine-doped nonmetal-carbon (X&F-C) structure

Methodology Applied

Scientific EffectChemical Bonding: Chemical Bonding

Implementation Method 2

fluorine atoms may occupy a local coordination environment (LCE) site of the M/X&F-C construct, preventing the at least one nonmetallic chemical element from occupying the LCE site

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 3

improving catalyst activity within an electrochemical cell

Methodology Applied

Scientific EffectElectrochemical reaction:

Implementation Method 4

optimize a catalytic reaction within an electrochemical cell

Methodology Applied

Scientific EffectCatalysis: Catalysis

Data Source

PatentUS12614735B2Composition of and method for optimizing a catalytic reaction

Publication Date: 2026.04.28 UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION INC

AI summary

Described, herein, relates to a fluorinated electrocatalyst and a method of optimizing a catalytic reaction within an electrochemical cell, in which fluorine atoms may be introduced to the local coordination environment sites to weaken the carbon-nonmetal bonds and drive the nonmetallic chemical elements towards metallic chemical elements. The method may include introducing fluorine atoms to the metal-nonmetal-carbon catalysts to occupy the LCE site within the catalysts in order prevent the nonmetallic chemical elements from occupying the LCE sites, thereby driving the nonmetallic chemical element to form a nonmetallic chemical element layer on a surface of the metallic chemical elements. The nonmetallic chemical element layer may also inhibit the agglomeration and migration of the metallic chemical elements about the LCE site, optimizing catalyst activity through the regulation of the LCE site. The resulting fluorine-doped high-performance catalysts may be usable within electrochemical cells, with long-term stability and reduced degradation.