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An energy storage device, an inorganic gelled electrolyte and methods thereof

A technology for energy storage devices and electrolytes, applied in hybrid capacitor electrolytes, circuits, capacitors, etc., can solve the problem that electrodes are not completely suitable for fast charging and discharging processes

Inactive Publication Date: 2014-06-18
INDIAN INSTITUTE OF SCIENCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such electrodes are not well suited for the rapid charge and discharge processes expected in capacitors

Method used

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  • An energy storage device, an inorganic gelled electrolyte and methods thereof

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Experimental program
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Effect test

Embodiment

[0049] Substrate-integrated PbO 2 / Preparation of activated carbon hybrid supercapacitor

[0050] A. Substrate-integrated PbO 2 Electrode preparation

[0051] Passed in 1M HNO 3 A pre-polished lead sheet (about 300 μm thick) was etched for 60 s and then fully rinsed with deionized water to prepare the substrate-integrated PbO 2 electrode. The piece was then immersed in 0.1M HClO containing as additive at room temperature 4 6M H 2 SO 4 in aqueous solution. During immersion in an aqueous solution of sulfuric acid, a thin layer of lead sulfate is formed on the surface of a lead sheet used as an anode in an electrochemical cell equipped with a counter electrode, thereby oxidizing lead sulfate to PbO 2 . This process was repeated five times to prepare fully formed substrate-integrated PbO 2 electrode.

[0052] B. Preparation of PVDF-bonded activated carbon electrodes

[0053] Activated carbon electrodes were prepared by pasting activated carbon inks containing polyviny...

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Abstract

The present invention is related to hybrid capacitors specifically to PbO2 / Activated Carbon hybrid ultracapacitors with an inorganic thixotropic-gelled-polymeric-electrolyte. The hybrid ultracapacitor of the present invention is simple to assemble, bereft of impurities, and can be charged / discharged rapidly with high faradaic efficiency.

Description

technical field [0001] The invention relates to a hybrid capacitor, in particular to a PbO 2 / activated carbon hybrid supercapacitor with inorganic thixotropic gel polymer electrolyte. The hybrid supercapacitor of the present invention is easy to assemble, free from impurities and can be charged / discharged quickly with high Faraday efficiency. Background of the invention [0002] Ultracapacitors (also known as supercapacitors) are considered devices that enable major advances in energy storage. Supercapacitors are bound by the same physical properties as conventional capacitors, but utilize high surface area electrodes and thinner dielectrics for higher capacitance, allowing higher energy densities than conventional capacitors and higher power densities than batteries. Supercapacitors fall into three general types, namely electric double-layer capacitors, pseudocapacitors, and hybrid capacitors. Each type is characterized by its unique mechanism for storing charge, namely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/56H01G11/34H01G11/46H01M10/22
CPCH01G11/56H01G11/30Y02E60/13H01G11/70H01G11/02H01G11/04H01G11/28H01G11/46H01G11/68
Inventor A·K·舒克拉A·班纳吉M·K·拉维库玛S·A·加富尔
Owner INDIAN INSTITUTE OF SCIENCE
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