CN108735517A - A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof - Google Patents

A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof Download PDF

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Publication number
CN108735517A
CN108735517A CN201810534409.XA CN201810534409A CN108735517A CN 108735517 A CN108735517 A CN 108735517A CN 201810534409 A CN201810534409 A CN 201810534409A CN 108735517 A CN108735517 A CN 108735517A
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nickel foam
preparation
electrode material
super capacitor
urea
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CN108735517B (en
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朱少敏
徐冰
李准
赵宇
王建海
邓晗
杨玉彬
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Dalian Jiaotong University
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Dalian Jiaotong University
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/24Electrodes characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

The invention discloses a kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof, and method includes the following steps:(1) nickel foam is removed into surface film oxide through pickling;Deionized water is washed to neutral and dry;(2) it prepares zinc nitrate, aluminum nitrate and urea to obtain mixed solution.The molar ratio of the molar concentration 0.05-0.15mol/L of urea in solution, zinc nitrate and aluminum nitrate is 5~1:1, urea and zinc nitrate, aluminum nitrate total amount molar ratio be 5~2:1;(3) nickel foam after processing is put into the mixed solution of step (2) ultrasonic;(4) mixed solution and nickel foam are put into reaction kettle and carry out hydro-thermal process;Hydrothermal temperature is 100-140 DEG C, and the hydro-thermal time is 1-20 hours.(5) hydro-thermal reaction completes postcooling, takes out nickel foam, washs, dry.The preparation method of the present invention is simple, environmental-friendly at low cost, is easy to large-scale production.

Description

A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof
Technical field
The present invention relates to a kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof.
Background technology
Energy storage system is the important link of peak load regulation network and generation of electricity by new energy, and the continuous exhaustion of fossil fuel is again into one Step have stimulated effective storage research of solar energy and wind energy.Ultracapacitor has high-specific-power, quick charge/discharge, Yi Jichang The characteristics of cycle life, and receive significant attention.
Electrode material for super capacitor includes carbon-based material, metal oxide-type and its composite material.Carbon material electrode fills Discharge rate, but specific capacitance is relatively small, metal oxide electrode, and specific capacitance is high but electric conductivity is poor.On the other hand, usually Electrode of super capacitor be to be made of active material, conductive material and binder, the internal resistance of ultracapacitor carrys out self-electrode material Diffusional resistance and the electrolyte electricity that the electron drag of material, the contact resistance of electrode and current collector, ion move in micropore Resistance etc..Wherein on the one hand the presence of binder increases electrode resistance, while also blocking the effective of electrolyte and active material Contact, itself also has certain weight, forms certain dead volume.
Invention content
For the technology above problem, the present invention provides a kind of preparation side of basic zinc carbonate electrode material for super capacitor Method includes the following steps:
(1) nickel foam is removed into surface film oxide through pickling;Deionized water is washed to neutral and dry;
(2) it prepares zinc nitrate, aluminum nitrate and urea to obtain mixed solution.The molar concentration 0.05- of urea in solution The molar ratio of 0.15mol/L, zinc nitrate and aluminum nitrate is 5~1:1, urea and zinc nitrate, aluminum nitrate total amount molar ratio be 5~ 2:1;
(3) nickel foam after processing is put into the mixed solution of step (2) ultrasonic;
(4) mixed solution and nickel foam are put into reaction kettle and carry out hydro-thermal process;Hydrothermal temperature is 100-140 DEG C, water The hot time is 1-20 hours.
(5) hydro-thermal reaction completes postcooling, takes out nickel foam, washs, dry, obtains the alkali of nickel foam surface in situ growth Formula zinc carbonate combination electrode material.
Further, in the above-mentioned technical solutions, in step (1), nickel foam is put into hydrochloric acid and impregnates ultrasound, remove table Surface oxidation film, hydrochloric acid molar concentration are 0.5-2mol/L, ultrasonic time 10-30 minutes.
Further, in the above-mentioned technical solutions, in step (3), ultrasonic time be 10-30 minutes, nickel foam with mix The volume ratio of solution is 1:2~5.
Further, in the above-mentioned technical solutions, in step (4), nickel foam is with mixed solution product than being 1:2~5.
The present invention provides the basic zinc carbonate electrode material for super capacitor that above-mentioned preparation method obtains.
The preparation method of the present invention is simple, and zinc nitrate, aluminum nitrate and precipitating reagent urea are industrialization conventional reagent, environment It is friendly at low cost, it is easy to large-scale production.The basic zinc carbonate of nickel foam surface in situ growth is two-dimentional sawtooth piece to orderly just Hexagonal nanosheet shape, this combination electrode material show higher specific capacitance and cyclical stability in electro-chemical test.
Description of the drawings
Fig. 1 is the SEM figures that nickel foam surface in situ prepared by the embodiment of the present invention 1 grows basic carbonate Zinc material;
Fig. 2 is basic carbonate Zinc material XRD diagram prepared by embodiment 1;
Fig. 3 is that the nickel foam surface in situ of preparation prepared by embodiment 2 grows the SEM figures of basic carbonate Zinc material;
Fig. 4 is that nickel foam surface in situ prepared by embodiment 1 grows basic carbonate Zinc material under different scanning rates Cyclic voltammetry curve figure;
Fig. 5 is that embodiment 2 prepares nickel foam surface in situ growth basic carbonate Zinc material following under different scanning rates Ring volt-ampere curve figure;
Fig. 6 is the constant current charge-discharge curve that nickel foam surface in situ prepared by embodiment 1 grows basic carbonate Zinc material;
Fig. 7 is the SEM figures that nickel foam surface in situ prepared by the embodiment of the present invention 3 grows basic carbonate Zinc material;
Fig. 8 is the SEM figures that nickel foam surface in situ prepared by the embodiment of the present invention 4 grows basic carbonate Zinc material;
Fig. 9 is the SEM figures that nickel foam surface in situ prepared by the embodiment of the present invention 5 grows basic carbonate Zinc material.
Specific implementation mode
Nickel foam contains foam metal factory, thickness 1.5mm purchased from Jiangsu good hundred million in embodiment.
Embodiment 1
A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof, implements according to the following steps.
(1) nickel foam is put into a concentration of 2mol/L hydrochloric acid and impregnates ultrasound 10 minutes, remove surface film oxide, deionization Water is washed to neutral and dry;
(2) zinc nitrate, aluminum nitrate and urea is taken to prepare to obtain mixed solution.A concentration of 0.01mol/ of zinc nitrate in solution L, a concentration of 0.002mol/L of aluminum nitrate, the molar concentration 0.06mol/L of urea.
(3) nickel foam after processing is put into ultrasound 10 minutes in the mixed solution of step (2).Nickel foam and above-mentioned mixed liquor Volume ratio be 1:3.
(4) mixed solution and nickel foam are put into reaction kettle and carry out hydro-thermal process;Nickel foam is with etching liquid volume ratio 1:3, hydrothermal temperature is 120 DEG C, and the hydro-thermal time is 2 hours.
(5) hydro-thermal reaction completes postcooling, takes out nickel foam, washs, dry, obtains the alkali of nickel foam surface in situ growth Formula zinc carbonate combination electrode material.
Fig. 4 is that the nickel foam surface in situ prepared grows cyclic voltammetric of the basic carbonate Zinc material under different scanning rates Curve graph;Fig. 6 is the constant current charge-discharge curve of the nickel foam surface in situ growth basic carbonate Zinc material prepared;Test process is Three-electrode system is to electrode, using the combination electrode of preparation as work electricity with platinum electrode using saturated calomel electrode as reference electrode Pole, electrolyte are 6M KOH, and the constant current charge-discharge under 1A/g current densities, specific capacitance is up to 1600F/g.
Embodiment 2
A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof, step with embodiment 1, unlike, In step (4), the hydro-thermal time is 8 hours.Fig. 5 is that the nickel foam surface in situ growth basic carbonate Zinc material prepared is swept in difference Retouch the cyclic voltammetry curve figure under rate.Test process is three-electrode system, using saturated calomel electrode as reference electrode, with platinum electricity Extremely to electrode, using the combination electrode of preparation as working electrode, electrolyte is 6M KOH, when sweep speed is 50mV/s, than Capacitance is up to 1100F/g.
Embodiment 3
A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof, step with embodiment 1, unlike, In step (4), the hydro-thermal time is 12 hours.
Embodiment 4
A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof, step with embodiment 1, unlike, In step (2), zinc nitrate, aluminum nitrate and urea is taken to prepare to obtain mixed solution.A concentration of 0.01mol/ of zinc nitrate in solution L, a concentration of 0.005mol/L of aluminum nitrate, the molar concentration 0.075mol/L of urea.
Embodiment 5
A kind of basic zinc carbonate electrode material for super capacitor and preparation method thereof, step with embodiment 1, unlike, In step (2), zinc nitrate, aluminum nitrate and urea is taken to prepare to obtain mixed solution.A concentration of 0.01mol/ of zinc nitrate in solution L, a concentration of 0.01mol/L of aluminum nitrate, the molar concentration 0.1mol/L of urea.

Claims (5)

1. a kind of preparation method of basic zinc carbonate electrode material for super capacitor, it is characterised in that include the following steps:
(1) nickel foam is removed into surface film oxide through pickling;Deionized water is washed to neutral and dry;
(2) it prepares zinc nitrate, aluminum nitrate and urea to obtain mixed solution.The molar concentration 0.05- of urea in solution The molar ratio of 0.15mol/L, zinc nitrate and aluminum nitrate is 5~1:1, urea and zinc nitrate, aluminum nitrate total amount molar ratio be 5~ 2:1;
(3) nickel foam after processing is put into the mixed solution of step (2) ultrasonic;
(4) mixed solution and nickel foam are put into reaction kettle and carry out hydro-thermal process;Hydrothermal temperature is 100-140 DEG C, when hydro-thermal Between be 1-20 hours.
(5) hydro-thermal reaction completes postcooling, takes out nickel foam, washs, dry, obtains the alkali formula carbon of nickel foam surface in situ growth Sour zinc combination electrode material.
2. a kind of preparation method of basic zinc carbonate electrode material for super capacitor according to claim 1, it is characterised in that: In step (1), nickel foam is put into hydrochloric acid and impregnates ultrasound, remove surface film oxide, hydrochloric acid molar concentration is 0.5-2.0mol/ L, ultrasonic time 10-30 minutes.
3. a kind of preparation method of basic zinc carbonate electrode material for super capacitor according to claim 1, it is characterised in that: In step (3), ultrasonic time is 10-30 minutes, and the volume ratio of nickel foam and mixed liquor is 1:2~5.
4. a kind of preparation method of basic zinc carbonate electrode material for super capacitor according to claim 1, it is characterised in that: In step (4), nickel foam is 1 with mixed liquor volume ratio:2~5.
5. the basic zinc carbonate electrode material for super capacitor that the preparation method as described in Claims 1 to 4 any one obtains.
CN201810534409.XA 2018-05-30 2018-05-30 Basic zinc carbonate supercapacitor electrode material and preparation method thereof Active CN108735517B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103887082A (en) * 2014-03-17 2014-06-25 湖州师范学院 Method for growing hexagonal Co(OH)2 on surface of metal foamed nickel
CN104907036A (en) * 2015-05-15 2015-09-16 燕山大学 Graded dandelion-flower-shaped ZnO-Al2O3 compound and preparation method therefor
CN104993106A (en) * 2015-05-27 2015-10-21 三峡大学 Zinc-based composite material basic zinc carbonate, preparation method and application thereof
CN105819849A (en) * 2016-05-04 2016-08-03 武汉工程大学 Zinc aluminate nanometer powder and preparing method thereof
CN105914046A (en) * 2016-04-14 2016-08-31 深圳大学 Preparation method for hydroxyl-cobalt-carbonate thin-film super capacitor electrode material
JP2017043505A (en) * 2015-08-25 2017-03-02 住友金属鉱山株式会社 Manufacturing method of uv light shielding material particulates, uv light shielding material particulate dispersoid using uv light shielding material particulates, and uv light shielding body
CN107051565A (en) * 2017-05-24 2017-08-18 中国科学院化学研究所 A kind of performance alkali formula carbonate electrolysis water catalyst and preparation method and application

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103887082A (en) * 2014-03-17 2014-06-25 湖州师范学院 Method for growing hexagonal Co(OH)2 on surface of metal foamed nickel
CN104907036A (en) * 2015-05-15 2015-09-16 燕山大学 Graded dandelion-flower-shaped ZnO-Al2O3 compound and preparation method therefor
CN104993106A (en) * 2015-05-27 2015-10-21 三峡大学 Zinc-based composite material basic zinc carbonate, preparation method and application thereof
JP2017043505A (en) * 2015-08-25 2017-03-02 住友金属鉱山株式会社 Manufacturing method of uv light shielding material particulates, uv light shielding material particulate dispersoid using uv light shielding material particulates, and uv light shielding body
CN105914046A (en) * 2016-04-14 2016-08-31 深圳大学 Preparation method for hydroxyl-cobalt-carbonate thin-film super capacitor electrode material
CN105819849A (en) * 2016-05-04 2016-08-03 武汉工程大学 Zinc aluminate nanometer powder and preparing method thereof
CN107051565A (en) * 2017-05-24 2017-08-18 中国科学院化学研究所 A kind of performance alkali formula carbonate electrolysis water catalyst and preparation method and application

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