A High Energy Density Flat Carbon Electrode

A high-energy-density, carbon-electrode technology, applied in the direction of hybrid capacitor electrodes, circuits, capacitors, etc., can solve the problems of limited plate thickness, large proportion of current collector mass, large equivalent series resistance, etc., to reduce internal resistance , Good bonding effect, enhanced contact effect
CN109637832BActive Publication Date: 2021-01-29SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU UNIV
Publication Date
2021-01-29

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Abstract

The invention discloses a flat carbon electrode with high energy density. The flat carbon electrode comprises an active substance, a conductive network with a three-dimensional structure and a currentcollector, wherein the active substance consists of 80-90% of active carbon, 6-13% of conductive agent and 4-8% of water-based adhesive, and the sum of the components is 100%. The water-based adhesive is one or a mixture of more than two of a PTFE emulsion, an epoxy emulsion, PVDF and CMC. The conductive network is a conductive adhesive composed of a conductive agent (15-35%) and an organic binder (65-85%). The organic adhesive is one or a mixture of more than two of epoxy resin, polyurethane, fluororubber and chloroprene rubber. And the conductive network with the three-dimensional structureis formed by gradually pulling an organic conductive binder with a phase different from that of the active substance into filaments along with the volatilization of the solvent in the mixing processand finally adhering the filaments in the tabletting process. The carbon electrode provided by the invention has the characteristics of high capacity and high power.
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Description

technical field

[0001] The invention belongs to the field of electrochemical energy storage devices, and in particular relates to a novel high-energy-density carbon electrode and a preparation method thereof. Background technique

[0002] With the continuous development of the economy, energy, resources and the environment have become the focus of society. It is an urgent and arduous task for human society to find clean, renewable and resource-saving energy.

[0003] Currently, there are three main types of energy storage devices in the energy field: batteries, physical capacitors, and electrochemical capacitors (also known as supercapacitors). Electrochemical capacitor is a new type of green energy storage device developed in recent years between the characteristics of traditional physical capacitors and batteries. It has fast charge and discharge characteristics, high power density (more than several dozen times that of ordinary batteries), and Long service life (the numb...

Claims

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