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Preparation method of MOF film for supercapacitor electrode material

A technology for supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems of adverse effects on the stability of supercapacitor devices, hinder applicability, etc., to improve adhesion, delay peeling, Stable effect

Active Publication Date: 2021-11-02
ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Problems caused by separation during anodic deposition, such as stability, severely hinder the applicability of this method
Furthermore, due to the anodic dissolution of metals at the MOFs-substrate interface, MOFs films are usually only one or a few crystals thick, which precludes the use of MOFs films in operating environments that require mechanical strength or high-mass loads (such as supercapacitors for energy storage devices). The application in the supercapacitor also has an adverse effect on the device stability of the supercapacitor
Strategies to address the critical issue of anodically electrodeposited MOF thin films have so far been poorly reported

Method used

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  • Preparation method of MOF film for supercapacitor electrode material
  • Preparation method of MOF film for supercapacitor electrode material
  • Preparation method of MOF film for supercapacitor electrode material

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Embodiment 1

[0048] To prepare a film with high adhesion HKUST-1, the specific steps are as follows:

[0049] The first step is to synthesize HKUST-1 powder: use copper plates as the working electrode and counter electrode: take 67 mL absolute ethanol, 33 mL Milli-Q water, 2g H3BTC and 1g MTBS to configure the electrolyte. Using Autolab-PGSTAT-302N electrochemical workstation, at room temperature under magnetic field stirring, at 2-10mA cm -2 The constant current density was synthesized for a certain period of time. After the synthesis reaction, the blue synthesis solution was collected and allowed to stand for 2 hours, then the supernatant was decanted, and the precipitate was transferred to a 100mL polypropylene tube, and then added to the 100mL polypropylene tube 80 ml of ethanol, the precipitate was dispersed in absolute ethanol, and the supernatant was decanted after standing for 12 hours. The precipitate was washed with ethanol for three times, and then placed in a drying oven at 60°...

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Abstract

The invention discloses a preparation method of an MOF film for a supercapacitor electrode material, which relates to the technical field of supercapacitors. The MOF powder and the metal are co-deposited by adopting a pulse electrodeposition method. Firstly, HKUST-1 powder is synthesized through electrodeposition, then a working electrode containing embedded HKUST-1 particles is prepared through a pulse electrodeposition method, and the MOF particle anchoring modified electrode is obtained. HKUST-1 anode deposition synthesis is conducted by taking the MOF particle anchoring modified electrode as an anode to obtain the MOF film with high adhesive force. The adhesive force of the anode deposition MOF film can be improved, and the stability is enhanced. The MOF film with good adhesive force on the electrode is beneficial to the application of MOF in the supercapacitor electrode material and the like, and the device stability of the supercapacitor is improved. And the MOF film with the controllable thickness can be prepared, and a new way is provided for other applications needing to work under the high-quality load.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and in particular relates to a method for preparing supercapacitor electrode material MOF. Background technique [0002] As a new type of energy storage device, supercapacitor has a wide range of application prospects in the field of energy storage due to its advantages of good safety, high power density, fast charge and discharge speed, and long cycle life. In the research of supercapacitors, electrode Materials are the main factors that determine the performance of supercapacitors. At present, porous carbon materials represented by activated carbon, carbon nanotubes and cross-linked porous graphene are widely used as electrode materials for supercapacitors. [0003] Metal-organic frameworks (MOF) is a coordination polymer that has developed rapidly in the past ten years. It has a three-dimensional pore structure. Generally, metal ions are used as connection points, and organic ligands are suppor...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/24H01G11/30
CPCH01G11/86H01G11/24H01G11/30Y02E60/13
Inventor 张漩郭巍姜银珠
Owner ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
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