Layered Electrode with Interlayer Materials for Fast Charging
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Solution Overview
Problem
Flexible and wearable energy storage devices face challenges in achieving high charging and discharging rates while maintaining durability and self-healing capabilities, as existing batteries either lack durability or are not capable of fast charging without compromising stability.
Innovation Solution
The development of an electrode structure for energy storage devices, featuring layers of active material with interlayer materials that stabilize and facilitate ion transport, combined with a polymeric substrate for self-healing properties, allowing for high-speed charge/discharge rates and long-term cycling stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high charging and discharging rates are implemented in flexible energy storage devices, then power output increases, but durability and stability deteriorate
Solution Approach 1:
The electrode is segmented into multiple layers of active material separated by interlayer materials. This layered structure allows ions to be transported through defined pathways, enabling fast charging/discharging while maintaining structural stability during cycling, thus resolving the contradiction between power output and durability
Solution Approach 2:
The electrode uses composite structure combining multiple layers of active material with interlayer materials. This composite approach enables simultaneous achievement of high ion transport efficiency (for fast charging) and structural integrity (for durability), resolving the power-stability contradiction
2Speed
If fast charging capability is enhanced, then charging speed increases, but structural stability deteriorates
Solution Approach 1:
The electrode structure divides active material into multiple thin layers separated by interlayer materials. This segmentation creates controlled ion transport channels that enable fast charging while preventing structural collapse, thus achieving both high charging speed and structural stability
Solution Approach 2:
Interlayer materials act as intermediaries between adjacent layers of active material. These intermediaries facilitate rapid ion transport while maintaining the structural framework, enabling fast charging without compromising structural stability
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 electrode structure enables energy storage devices to maintain high charging and discharging rates, achieve long-term cycling stability, and exhibit self-healing capabilities, making them suitable for demanding applications in flexible and wearable electronics.
Implementation Method 1
the physical interaction includes van der Waals force that maintains integrity of the layer material structure during the charging or the discharging operation of the energy storage device
Implementation Method 2
the polymeric material includes a polymer matrix having a plurality of intermolecular hydrogen bonds arranged to reform when the fragments of the electrode contact with each other
Data Source
AI summary
An electrode for an energy storage device and a method of fabricating such electrode. The electrode includes a plurality of layers of active material defining a layer material structure; and an interlayer material disposed between each adjacent pairs of layer of the active material. The interlayer material is arranged to facilitate a transportation of ions along and/or across the plurality of layers of active material during a charging or a discharging operation of the energy storage device.