A kind of energy harvesting/energy storage integrated micro-nano battery based on multi-layer structure

Abstract

The invention discloses an energy capturing and energy storing integrated micro-nano battery based on a multilayer structure. The battery mainly comprises an upper energy capturing structure and a lower energy storing structure. The energy capturing structure is formed by repeatedly folding two long strip shape electrodes; one long strip shape electrode is a bottom electrode and has a copper / industrialized liquid crystal polymer / copper three layer composite structure; and the other flexible electrode is a counter electrode and has an electret / copper / industrialized liquid crystal polymer / copper / electret five layer composite structure. The work principle is electrostatic induction: charges are implanted into an electret polymer film in advance to generate a bias voltage, when external vibration causes two electrodes to move relative to each other, due to the capacitance change, charges of two electrodes are recombined, the external mechanical energy is converted into electrical energy,and at the same time, through a two dimensional planar energy storing structure formed on a flexible substrate, in-situ energy storage is realized. The battery has the characteristics of good output performance, simple structure, small volume, light weight, durability, and flexibility.

Description

technical field [0001] The invention relates to a novel energy conversion / storage structure in the field of micro-energy, in particular to a multi-layer structure-based integrated micro-nano battery for energy capture / storage. Background technique [0002] A significant wave of scientific and technological development in today's society is the widespread application of Internet of Things (IoT) and wearable / portable electronics in communications, defense, construction, biomedical and environmental detection. Finding cheap, portable, and sustainable energy sources to power these products is an urgent problem and one that will continue to improve our quality of life. As a self-sustaining power source, the micro-vibration energy harvester can convert the vibration energy in the surrounding environment into electrical energy to power the micro-components. It is undoubtedly a promising research field. Electret, also known as "permanent electric body", refers to a dielectric mater...

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Problems solved by technology

However, since the generation of charge mainly depends on triboelectrification, its performance is limited by the limited surface charge density, and it works in a single electrode mode, resulting in limited energy conversion efficiency; and the process is very complicated, requiring surface nanostructures, after long-term use And repeated friction, the wear and failure of surface nanostructures are also a big challenge; since there is only one electrode, the flexible integrated integration of energy storage cannot be realized, and the in-situ storage of electric energy cannot be realized

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