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High temperature supercapacitor

A technology for supercapacitors and current collectors, which is applied in the direction of hybrid capacitor electrodes, hybrid capacitor electrolytes, hybrid capacitor collectors, etc., and can solve problems such as high-intensity vibrations

Inactive Publication Date: 2015-01-28
PRAD RES & DEV LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There may also be high-intensity vibrations

Method used

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Examples

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Effect test

example 1

[0042] Build the supercapacitor unit as described above. The two working electrode layers are formed from activated carbon. Each conductive layer is formed of metallic silver. An electrolyte impermeable smooth carbon layer separates each working electrode from its corresponding conductive layer. The inert matrix used is glass. Glass fibers are used as electrode separator material. The electrolyte used is an ionic liquid electrolyte composed of hexyltriethylammonium cation and bis(trifluoromethylsulfonyl)imide anion. Its voltammetric response was measured.

[0043] image 3 A graph showing the voltammetric response of the supercapacitor in the range of 4V at 220°C. As can be seen from this graph, the supercapacitor is stable at high temperature for many cycles and can operate reliably over a wide voltage range (4V). The test was arbitrarily terminated after 100 cycles.

example 2

[0045] The ionic liquid gel was formed by adding fumed silica gel (Sigma-Aldrich, product number S5130) to each ionic liquid. The ionic liquid used can be triethylsulfonium bis(trifluoromethylsulfonyl)imide, hexyltriethylammonium bis(trifluoromethylsulfonyl)imide (hexyltriethylammoniumbis(trifluoromethylsulfonyl)imide), or butyl Trimethylammonium bis(trifluoromethylsulfonyl)imide (butyltrimethylammonium bis(trifluoromethylsulfonyl)imide). The amount of fumed silica mechanically diffused into the ionic liquid was 7.5 weight percent of the total weight of the electrolyte phase. In some cases, the amount of fumed silica can be doubled and ferrocene (10 mM) can be added as a redox activity detection reagent.

[0046] Figure 4 It is shown that when silicon is not included, the amount of hydrophilic silicon nanoparticles (S5130) is 7.5 weight percent of the total weight of the electrolyte phase, and the amount of hydrophilic silicon nanoparticles (S5130) is 15% of the total weigh...

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Abstract

A supercapacitor device having a housing and at least one supercapacitor cell disposed in the housing, where the supercapacitor cell may include: two working electrode layers separated by an electrode separator wherein each working electrode layer is electrically connected to a current collector supported upon an inert substrate layer; an electrolyte-impervious layer disposed between each working electrode layer and each conducting layer to protect the conducting layer; and an ionic liquid electrolyte disposed within the area occupied by the working electrode layers and the electrode separator, wherein the ionic liquid electrolyte has at least one cationic component comprising a central cation with an asymmetric arrangement of substituents bonded thereto. The ionic liquid electrolyte may be gelled by a silica gellant to inhibit electrolyte flow. The operating range of the supercapacitor device is at least 20-220° C.

Description

Background technique [0001] Wells are commonly drilled into the earth to recover naturally deposited oil and gas or other minerals trapped in geological formations. To drill a well, a drill bit is connected to the lower end of an assembly of drill pipe sections connected end to end to form a "drill string". The drill bit is rotated by rotating the drill string at the surface or by actuation of a downhole motor or turbine, or both. Drilling fluid is pumped down through the drill string to the drill bit, from which it flows and carries cuttings away from the bottom of the hole through the annulus between the drill string and the borehole wall to the surface. [0002] In addition to the drill bit, the bottom hole assembly (BHA) typically includes other tools, sensors, or devices located thereon that are used during the drilling process. The downhole tool may also be suspended in the wellbore on a wireline that is sent down the wellbore after the drilling process is complete or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/06E21B47/09E21B21/08E21B44/00
CPCY02E60/13H01G11/24H01G11/18H01G11/28H01G11/70H01G11/62H01G11/14H01G11/64
Inventor S·弗莱彻V·J·布莱克
Owner PRAD RES & DEV LTD
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