3D Electrode Networks for Faster Ion Transport in Thick Cells
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Solution Overview
Problem
Current electrochemical storage and conversion devices face challenges in achieving high power and energy density while maintaining mechanical robustness and reliability, particularly in miniaturized forms for consumer electronics and aerospace applications, where existing designs struggle with ion and electron transport efficiency.
Innovation Solution
The development of layered electrodes with a three-dimensional network structure, incorporating active material layers separated by electrolyte layers and current collector layers, which form ion and electron conducting channels to enhance diffusion paths and connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional planar electrode designs are used, then manufacturing simplicity is maintained, but ion and electron transport efficiency deteriorates
Solution Approach 1:
The patent transitions from conventional two-dimensional planar electrodes to three-dimensional structured electrodes with interconnected porous networks. This dimensional enhancement creates multiple transport pathways for ions and electrons, significantly improving transport efficiency while the self-supporting structure maintains manufacturing feasibility through scalable fabrication methods
2Quantity of substance
If electrode thickness is increased to improve energy density, then energy capacity increases, but ion diffusion resistance increases
Solution Approach 1:
The patent implements a heterogeneous porous structure where pore size, distribution, and connectivity are optimized at different locations within the electrode. The three-dimensional network provides localized ion transport channels that adapt to regional requirements, enabling thick electrodes to maintain low diffusion resistance throughout their volume while maximizing energy storage capacity
3Volume of moving object
If miniaturized battery designs are implemented, then device form factor is reduced, but mechanical robustness deteriorates
Solution Approach 1:
The patent divides the electrode into a segmented porous network of interconnected struts and pores. This segmentation creates a cellular structure that efficiently distributes mechanical stresses throughout the miniaturized electrode, preventing stress concentration and maintaining robustness despite reduced overall dimensions. The modular architecture enables scalable miniaturization while preserving mechanical integrity
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
This configuration improves ion and electron transport efficiency, leading to higher energy and power densities, mechanical robustness, and flexibility in device design, enabling applications in portable electronics and aerospace without significant degradation.
Implementation Method 1
a three-dimensional network which provides a low resistance diffusion path for ions inside the electrode
Implementation Method 2
at least one layer comprising electrolyte is disposed between two layers comprising an active material
Implementation Method 3
current collector layers, which form ion and electron conducting channels
Data Source
AI summary
Provided herein are three-dimensional ion transport networks and current collectors for electrodes of electrochemical cells. Exemplary electrodes include interconnected layers and channels including an electrolyte to facilitate ion transport. Exemplary electrodes also include three dimensional current collectors, such as current collectors having electronically conducting rods, electronically conducting layers or a combination thereof.