Electrospun Non-Woven Organic Electrode for Stretchable Batteries
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Solution Overview
Problem
Conventional lithium ion secondary batteries are limited in shape changeability, leading to constraints on the development of portable devices, and existing flexible batteries face issues with conductive layer breakage during stretching, which deteriorates electrochemical properties.
Innovation Solution
A non-woven-type electrode is manufactured using an electro-spin method with an organic polymer active material, such as nitroxyl radical and conjugated carbonyl, mixed with a carbon conductive agent and polymer binder, to create a stretchable battery that maintains constant electrochemical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional lithium ion secondary batteries are used, then manufacturing is easy and cost is low, but shape changeability is limited
Solution Approach 1:
The patent employs flexible thin film electrodes made from organic polymer materials that can be stretched and deformed without breaking. The electrode structure uses thin film technology to achieve both flexibility for shape changeability and sufficient mechanical strength for manufacturing reliability.
Solution Approach 2:
The patent uses composite organic polymer materials combining conductive polymers with flexible matrix materials. This composite structure provides both the electrical conductivity needed for battery function and the mechanical flexibility required for shape changeability, resolving the contradiction between ease of manufacture and adaptability.
2Adaptability or versatility
If flexible battery structure is implemented, then shape changeability is improved, but conductive layer breaks during stretching reducing conductivity
Solution Approach 1:
The patent uses flexible thin film electrodes that can be stretched and deformed without breaking. The thin film structure maintains conductive layer integrity during stretching while enabling shape changeability, directly resolving the contradiction between adaptability and reliability.
Solution Approach 2:
The patent changes the physical and chemical parameters of the electrode materials, using organic polymers with specific molecular structures that maintain conductivity even when stretched. The conductive polymer composition and molecular arrangement are optimized to preserve electrical properties during deformation.
3Reliability
If inorganic electrode material is used, then electrochemical performance is maintained, but stretchability and shrinkability are limited
Solution Approach 1:
The patent replaces inorganic electrode materials with organic polymer composite materials that combine electrochemical activity with mechanical flexibility. The organic polymer structure provides both the redox activity for electrochemical performance and the chain flexibility for stretchability and shrinkability.
Solution Approach 2:
The patent changes from inorganic to organic materials, fundamentally altering the physical and chemical parameters of the electrode. Organic polymers have flexible molecular chains that enable stretching while maintaining electrochemical functionality through their redox-active groups.
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 stretchable battery maintains excellent electrochemical properties during stretching and shrinking, effectively dispersing stress and ensuring a three-dimensional electricity transfer path and broader electrode surface area, enhancing rate-capability and stability.
Implementation Method 1
forming a non-woven type electrode using an organic polymer active material which is capable of performing electrochemical oxidation-reduction reaction, by an electro-spin method
Implementation Method 2
using an organic polymer active material which is capable of performing electrochemical oxidation-reduction reaction
Data Source
AI summary
The present disclosure relates to an organic electrode manufactured into a non-woven type by using an electro-spin method, a stretchable battery which is stretchable and shrinkable, utilizing same, and a method of manufacturing the battery.