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Super capacitor combined electrode preparing method

A supercapacitor and composite electrode technology, applied in the field of electrochemical energy composite materials, can solve the problems of high power density and high energy density, structural stability, etc., and achieve electrochemical stress relief, high energy density and power density, large The effect of specific capacitance

Inactive Publication Date: 2014-07-30
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, conventional supercapacitor electrode materials can no longer meet the practical needs of high power density, high energy density, and structural stability.

Method used

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] like figure 1 Shown, a kind of preparation method of composite electrode of supercapacitor comprises the steps:

[0022] 1) Corrode the 100nm gold-silver alloy film with concentrated nitric acid for 12 hours.

[0023] 2) The above-mentioned corroded alloy film was fished out and attached to a polyethylene terephthalate (PET) flexible substrate as a composite collector.

[0024] 3) Place the above-mentioned composite collector sheet in 0.2mol / L manganese acetate solution and use constant current method 0.1mA 1110s at 1×1cm 2 Manganese oxide is deposited on a square area.

[0025] 4) The flexible sheet electrode obtained in step 3) is further cleaned to form a modified manganese dioxide / nanoporous gold supercapacitor composite electrode. Electrode structure such as figure 1 As shown, the microstructure seen under the scanning electr...

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Abstract

The invention discloses a super capacitor combined electrode preparing method. Nanoscale metallic oxide is grown on a nanometer multi-hole metal framework through an appropriate deposition method, and the nanoscale metallic oxide is processed sequentially to achieve electrode materials which are excellent in capacitive performance and suitable for energy storing devices like super capacitors. The preparing method is simple, moderate in condition, simple in technical parameter and lower in cost. The super capacitor electrode materials prepared in the preparing method have large specific capacitance. The high-performance combined electrodes can be widely applied to the technical fields of micro energy storing devices, sensors, flexible electric devices and the like, are suitable for development of energy storing devices in the future and have considerable application prospect.

Description

technical field [0001] The invention belongs to the field of electrochemical energy composite materials, and relates to a preparation method of a supercapacitor composite electrode. Background technique [0002] With the development of society, people have more and more demands on energy devices, and their performance requirements are also getting higher and higher. Energy devices with secondary recyclability, miniaturization, high energy density and high power density are increasingly favored by people. Supercapacitors, which are capacitors based on electrochemical principles, are intermediate between traditional physical capacitors and chemical batteries in their ability to rapidly charge and discharge and store electrical energy, and have gradually become a strong candidate and have been partially practically used as efficient , High-load electrochemical energy storage and energy transfer equipment. [0003] At present, conventional supercapacitor electrode materials ca...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/26
CPCY02E60/13
Inventor 曾志刚胡志宇龙啸
Owner SHANGHAI UNIV
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