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Zn-doped ni-mof self-supporting composite electrode and its preparation method and application

A composite electrode, self-supporting technology

Active Publication Date: 2020-06-26
XINXIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of the binder, the conductivity of the electrode produced by this method is relatively poor, and the welding of the tabs increases the cost, and the whole process is complicated and the cost is high

Method used

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  • Zn-doped ni-mof self-supporting composite electrode and its preparation method and application
  • Zn-doped ni-mof self-supporting composite electrode and its preparation method and application
  • Zn-doped ni-mof self-supporting composite electrode and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0016] (1) Cut foam nickel (NF) into The shape (1×1×1.5cm), put it into a beaker, add acetone, and sonicate in an ultrasonic cleaner for 10 minutes. Then, put it in a vacuum drying oven at 80°C for 24 hours;

[0017] (2) Place the NF in (1) in a crucible, then put the crucible into a high-temperature tube furnace, evacuate the tube furnace, and feed Ar (200 sccm) and H 2 (100sccm), the high-temperature tube furnace program is set to heat up to 1000°C at a rate of 50°Cm, and CH 4 (100sccm), followed by constant temperature for 1h, after reaching the time, turn off H 2 and CH 4 , after cooling down to room temperature naturally, turn off Ar to get nickel foam / graphene foam (NF / GF electrode)

[0018] (3) Take 6.5ml DMF and 4ml ethylene glycol, form a mixed solution in a beaker, add 0.024g terephthalic acid, 0.04g nickel nitrate (Ni(NO3) 2 6H 2 O) and 0.044g of Zn(NO3) 2 , stirred at room temperature for 1 hour with a magnetic stirrer.

[0019] (4) the NF-GF electrode tha...

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Abstract

The invention discloses a Zn-doped Ni-MOF self-supporting composite electrode, a preparation method and an application thereof. NF / GF / Zn-doped Ni-MOF self-supporting composite electrode was prepared by vapor deposition and solvothermal method. The invention obtains the NF / GF / Zn-doped Ni-MOF self-supporting composite electrode through a vapor deposition method and a solvothermal method. The present invention prepares the self-supporting electrode of this three-phase composite structure for the first time, and studies its performance in supercapacitors. The results of the invention show that the electrode has high pseudocapacitive energy storage characteristics, and at 0.5Ag ‑1 The maximum specific capacity under the current density can reach 2552Fg ‑1 .

Description

technical field [0001] The invention relates to battery technology, in particular to a Zn-doped Ni-MOF self-supporting composite electrode and a preparation method and application thereof. Background technique [0002] In the traditional supercapacitor electrode manufacturing process, the active material is generally mixed with a conductive agent and a binder and then loaded on the current collector, and then a metal strip is welded on the current collector as a tab to make an electrode. Due to the addition of the binder, the conductivity of the electrode produced by this method is relatively poor. In addition, the welding of the tabs increases the cost, and the whole process is complicated and costly. The electrode of the self-supporting structure is obtained by one-time molding, and the process is simple, which not only can reduce the production cost, but also does not use a binder with poor conductivity, which can greatly improve the conductivity of the entire electrode, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/26H01G11/24H01G11/30
CPCH01G11/24H01G11/26H01G11/30H01G11/86Y02E60/13
Inventor 杨杰陈改荣马志华王刘杰张晨阳姚文惠
Owner XINXIANG UNIV
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