Flexible Electrode with Gold Nanosheets for Wearable Batteries
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Solution Overview
Problem
Existing manufacturing methods for electrodes in electrochemical devices struggle to achieve both flexibility and electrochemical performance, particularly in wearable and flexible apparatuses, as they often compromise on safety and conductivity during elongation and shrinkage processes.
Innovation Solution
An electrode comprising a composite film with an elastic polymer matrix and gold nanosheets, both inside and outside the matrix, forming a conductive percolation network that maintains electrical conductivity and flexibility, along with an electrode active material layer, ensuring excellent strength, safety, and electrochemical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a generally-known manufacturing method is used to achieve flexibility, then flexibility is improved, but safety and electrochemical performance deteriorate
Solution Approach 1:
The patent employs a composite structure consisting of an elastic polymer matrix combined with gold nanosheets to create an electrode that simultaneously achieves flexibility and electrochemical performance. The composite film integrates the elastic properties of the polymer matrix with the high conductivity of gold nanosheets, resolving the contradiction between flexibility and electrochemical performance while maintaining safety
2Adaptability or versatility
If an electrode is manufactured to have flexibility, then flexibility is improved, but electrical conductivity during elongation and shrinkage deteriorates
Solution Approach 1:
The patent uses thin gold nanosheets embedded in an elastic polymer matrix to create a flexible conductive structure. The nanosheet configuration and elastic matrix allow the electrode to maintain electrical conductivity during elongation and shrinkage while achieving the required flexibility for wearable applications
Solution Approach 2:
The composite film combining elastic polymer matrix with gold nanosheets creates a material that simultaneously provides flexibility through the polymer and electrical conductivity through the gold nanosheets, resolving the contradiction between flexibility and electrical conductivity maintenance during deformation
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 exhibits enhanced flexibility, safety, and electrochemical performance by maintaining electrical conductivity during elongation and shrinkage without the need for a binder, enabling the creation of high-performance batteries for wearable and flexible devices.
Implementation Method 1
a conductive percolation network that maintains electrical conductivity
Implementation Method 2
an elastic polymer matrix
Data Source
AI summary
Provided are an electrode capable of maintaining electrical conductivity during elongation and shrinkage, a method for manufacturing the same, and electrochemical device including the same.