Triboelectric Generator With Concave-Convex Electrode Surface
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Solution Overview
Problem
Existing devices for generating electricity by friction have low efficiency due to insufficient friction force between electrodes and insulating layers, limiting their application potential.
Innovation Solution
The device incorporates a concave-convex structure on at least one surface of the second conductive electrode and the insulating polymeric membrane layer, along with elastic columns and a photosensitive resin layer, to increase friction force and area, thereby enhancing electricity generation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a flat surface structure is used for the electrode and insulating layer, then the device structure is simple, but the friction force is insufficient leading to low electricity generation efficiency
Solution Approach 1:
The patent applies curvature by forming a concave-convex structure on the surface of the insulating layer and/or electrode. This curved surface structure increases the friction force between the electrode and insulating layer during relative movement, thereby improving electricity generation efficiency without requiring complex internal mechanisms
2Productivity
If a flat surface is used between the electrode and insulating layer, then the manufacturing process is simple, but the friction area is limited reducing energy conversion efficiency
Solution Approach 1:
The concave-convex structure creates additional friction area through its curved surfaces. When the electrode and insulating layer move relative to each other, the convex and concave portions engage to increase the effective contact area, thereby improving energy conversion efficiency while maintaining a relatively simple manufacturing process involving standard coating and patterning techniques
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 modified structure significantly improves the friction force and area, leading to increased efficiency in converting mechanical energy into electrical energy, thus addressing the low efficiency issues of prior art devices.
Implementation Method 1
a balance weight (10), an upper electrode arranged onto the balance weight (10)
Implementation Method 2
utilizes the friction between surfaces of two materials to enable one material to obtain electrons and the other one to lose electrons, thereby generating electric energy upon friction
Implementation Method 3
due to the friction and electrostatic induction effect between the lower electrode (30) and the polymeric insulating layer (20)
Implementation Method 4
a photosensitive resin layer having a concave-convex structure formed by exposure
Data Source
AI summary
A device for generating electricity by friction and a manufacturing method thereof. The device comprises a first substrate and a second substrate arranged oppositely, and a plurality of elastic columns arranged between the first substrate and the second substrate to support them. A surface of the first substrate facing the second substrate is provided with a first conductive electrode and an insulating polymeric membrane layer which are stacked. A surface of the second substrate facing the first substrate is provided with a second conductive electrode. At least one surface of the two opposite surfaces of the second conductive electrode and the insulating polymeric membrane layer is formed into a surface with a concave-convex structure. The friction area between the second conductive electrode and the insulating polymeric membrane layer can be increased upon relative movement between the first substrate and the second substrate.