Endoskeleton-Supported Fuel Cell Membranes for Crossover Control
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Solution Overview
Problem
Current energy storage solutions, such as lithium-ion batteries and hydrogen fuel cells, face challenges including limited cycle life, safety concerns, high environmental impact, and inefficiencies in energy conversion and storage, which hinder their effectiveness in providing reliable and sustainable energy.
Innovation Solution
Development of advanced ion exchange membranes and fuel cell technologies that enhance proton conduction while minimizing gas exchange, aiming to create a more efficient and safer energy storage and conversion system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If lithium-ion batteries are used for energy storage, then energy density is improved, but safety concerns and environmental impact worsen
Solution Approach 1:
The patent changes the chemical parameters of the electrolyte system by using ion exchange membranes with specific ion conductivity properties and selecting electrolyte compositions (such as KOH solution or solid electrolytes like sulfides and oxides) that offer both high energy density and improved safety profiles compared to conventional lithium-ion battery electrolytes
Solution Approach 2:
The patent employs composite material structures including ion exchange membranes combined with electrode materials and electrolyte systems that integrate multiple functional properties to achieve both high energy storage capacity and enhanced safety characteristics, such as using solid electrolytes combined with specific catalyst layers
2Object-generated harmful factors
If hydrogen fuel cells are used for energy conversion, then clean energy production is improved, but efficiency in energy conversion worsens
Solution Approach 1:
The patent optimizes the chemical and physical parameters of the fuel cell system by adjusting electrolyte concentration, membrane thickness, and catalyst composition to enhance the electrochemical reaction efficiency, thereby improving energy conversion efficiency while maintaining clean energy production
Solution Approach 2:
The patent utilizes porous electrode structures and porous ion exchange membranes that increase the surface area for electrochemical reactions, improving the efficiency of hydrogen conversion to electrical energy while maintaining the clean energy advantage of fuel cells
3Loss of energy
If ion exchange membranes are designed to enhance proton conduction, then energy conversion efficiency is improved, but gas exchange control becomes more challenging
Solution Approach 1:
The patent applies local quality differentiation by designing ion exchange membranes with spatially varying properties, such as regions with different ion conductivity or thickness, to simultaneously optimize proton conduction pathways while maintaining effective gas separation in different areas of the membrane structure
Solution Approach 2:
The patent employs composite membrane structures that combine materials with complementary properties, such as hydrophilic and hydrophobic regions or different polymer matrices, to achieve both high proton conduction efficiency and effective gas exchange control within a single integrated component
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 proposed solution improves energy storage and conversion efficiency, safety, and reduces environmental impact by addressing the limitations of existing technologies, enabling more reliable and sustainable energy solutions.
Implementation Method 1
enhance proton conduction while minimizing gas exchange
Implementation Method 2
ion exchange membranes
Implementation Method 3
fuel cells comprising ion exchange membranes including those using hydrogen and methanol as fuel sources
Data Source
AI summary
A advanced fuel cell (AFC) assembly comprises a variety of features improving its performance, reliability, durability, and manufacturability include an ion exchange membrane such as a proton exchange membrane comprising polymers of perfluorinated sulfonic acid or hydrocarbon compounds supported by an inert endoskeletal structure of greater mechanical strength preventing deformation damage from handling, temperature cycling, and ionomer swelling and contraction from humidity cycling. The endoskeleton may be attached to wider exoskeletal pillars used for singulating one membrane from another after fabrication and to a thicker handle used to transport the membrane during processing prior to separation. Other AFC features include a asymmetric catalyst coated membrane inhibiting fuel cross over, oxygen back streaming, and CO atmospheric poisoning; a graded heterogenous gas diffusion layer for enhanced charge and gas transport; and a self-aligned gasket-less assembly with integrated sealant preventing gas leakage.