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Asymmetric Hybrid Supercapacitor

A supercapacitor, asymmetric technology, used in hybrid capacitors, hybrid capacitor electrodes, hybrid capacitor separators, etc., to solve problems such as slow charging and discharging of magnesium films

Inactive Publication Date: 2017-03-15
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, charging and discharging of the magnesium thin film used is slow and its lifetime is limited to 4000 cycles

Method used

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Embodiment Construction

[0033] The asymmetric hybrid supercapacitor 1 according to the embodiment of the invention described below has figure 1 structure shown in . A cathode 2 consisting of activated carbon is applied to a first current collector 3 . The anode 4 is applied on a second current collector 5 . The two current collectors 3 , 5 each consist of aluminum coated with carbon. An electrolyte 6 is introduced between the cathode 2 and the anode 4 . Separator 7 separates cathode 2 from anode 4 . exist figure 1 Li is schematically depicted at double magnification in + Mosaic of ions into the anode 4.

[0034] The anodes 4 each consist of an anode material comprising a metal or semimetal, activated carbon as EDLC material, graphite and binder PTFE. In a first embodiment of the invention, the metal or semi-metal has the shape of a hollow rod-shaped fiber comprising a porous outer wall. exist Figure 2a Such fibers are shown in . The fibers have a diameter of 2 μm. In a second embodiment, ...

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Abstract

The invention discloses an asymmetric hybrid supercapacitor which includes a cathode and an anode. The anode contains a metal or semimetal. The anode has a porosity of at least 20% by volume.

Description

technical field [0001] The present invention relates to asymmetric hybrid supercapacitors characterized by the composition of their anodes. Background technique [0002] Hybrid Supercapacitors ( H ybride S uper C apacitor, HSC), such as lithium-ion capacitors are a new generation of capacitors that can provide more power than lithium-ion batteries, which have a large energy density of more than 100Wh / kg, but the The energy is emitted only slowly, and the new generation of capacitors has a higher energy density than high-energy supercapacitors (EDLC / SC), which can provide more than 100kW / kg, but have only a low energy density . The hybrid supercapacitor can be charged, for example, by means of short high-energy pulses, as occurs when braking energy of a motor vehicle is regenerated. The electrical energy recovered in this way can then be used to accelerate the motor vehicle. This enables fuel savings as well as reductions in carbon dioxide emissions. Hybrid supercapaci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/04H01G11/06H01G11/24H01G11/26H01G11/30H01G11/50
CPCH01G11/04H01G11/06H01G11/24H01G11/26H01G11/30H01G11/50Y02E60/13H01G11/28H01G11/36H01G11/60H01G11/62H01G11/68H01G11/52
Inventor F.戈尔克斯P.弗马
Owner ROBERT BOSCH GMBH