CN107230559A - A kind of preparation method of porous oxidation cerium composite - Google Patents

A kind of preparation method of porous oxidation cerium composite Download PDF

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Publication number
CN107230559A
CN107230559A CN201710507135.0A CN201710507135A CN107230559A CN 107230559 A CN107230559 A CN 107230559A CN 201710507135 A CN201710507135 A CN 201710507135A CN 107230559 A CN107230559 A CN 107230559A
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aqueous solution
nitrate aqueous
template
preparation
porous
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CN107230559B (en
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刘辉
李彤
庞凌燕
李军奇
何选盟
刘俊莉
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Chengcheng Haitai Electronic Material Co.,Ltd.
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Shaanxi University of Science and Technology
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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
    • H01G11/84Processes 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
    • 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
    • H01G11/22Electrodes
    • H01G11/30Electrodes characterised by their material
    • H01G11/32Carbon-based
    • 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
    • H01G11/46Metal oxides
    • 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)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

The invention discloses a kind of preparation method of porous oxidation cerium composite, specifically implement according to following steps:Step 1, the template aqueous solution is prepared;Step 2, the ammonium ceric nitrate aqueous solution is prepared respectively and manganese nitrate aqueous solution is prepared, and then the ammonium ceric nitrate aqueous solution and manganese nitrate aqueous solution are mixed, mixed solution A is obtained;Step 3, the template aqueous solution made from step 1 is added in mixed solution made from step 2, stirs 1h 5h, obtain mixed solution B;Step 4, the mixed solution B that step 3 is obtained is washed, it is then placed in baking oven and is dried at a temperature of 30 DEG C 80 DEG C, dried product is warming up to calcining 2h 6h at 500 DEG C 800 DEG C with 1 DEG C/min, 10 DEG C/min heating rate under an argon atmosphere, porous C eO is obtained2/ MnO/C composites.The present invention is prepared for porous C eO using sodium carboxymethylcellulose as template using template2/ MnO/C composites, preparation technology is simple, cost is low, reaction temperature and reaction time are easy to control.

Description

A kind of preparation method of porous oxidation cerium composite
Technical field
The invention belongs to composite material and preparation method thereof technical field, it is related to a kind of preparation side of porous oxidation cerium composite Method.
Background technology
CeO2With good redox characteristic, but electric conductivity and structural stability are poor.Work as Ce4+It is reduced to Ce3+When, always It is can occur lattice dilatation.Therefore, CeO is used alone2It is not fine as performance during electrode material.Have well to prepare Capacitive property, high rate performance, the high-performance super capacitor of energy density and cyclical stability, by CeO2With carbon material or its He combines metal oxide.Transition metal oxide MnO has cost low, environment-friendly, the advantages of theoretical specific capacity is high, is one Plant the material with good chemical property.And existing experimental method is all simply by CeO2It is combined, and is prepared with MnO The manganese oxide gone out is all the manganese oxide of multivalent state, also not simultaneously by CeO2, the preparation method that is combined of MnO and C, due to The good conductivity of carbon material, can compensate for CeO2Defect.Therefore, it is of the invention by CeO2, MnO combined to manufacture high property with C Can electrode material for super capacitor.Composite is prepared into porous pattern, then can increase the specific surface area of material, so as to enter One step improves the chemical property of material.
The content of the invention
It is an object of the invention to provide a kind of preparation method of porous oxidation cerium composite, the compound of porous pattern is made Material, chemical property is good.
The technical solution adopted in the present invention is, a kind of preparation method of porous oxidation cerium composite, specifically according to Lower step is implemented:
Step 1, the template aqueous solution is prepared;
Step 2, the ammonium ceric nitrate aqueous solution is prepared respectively and manganese nitrate aqueous solution is prepared, then by the ammonium ceric nitrate aqueous solution and Manganese nitrate aqueous solution is mixed, and obtains mixed solution A;
Step 3, the template aqueous solution made from step 1 is added in mixed solution made from step 2, stirs 1h-5h, Obtain mixed solution B;
Step 4, the mixed solution B that step 3 is obtained is washed, be then placed in baking oven at a temperature of 30 DEG C -80 DEG C Drying, 500 DEG C -800 DEG C are warming up to by dried product with 1 DEG C/min-10 DEG C/min heating rate under an argon atmosphere Lower calcining 2h-6h, obtains porous C eO2/ MnO/C composites.
The features of the present invention is also resided in,
Template in step 1 is that the concentration of the template aqueous solution is 1%-5% from sodium carboxymethylcellulose.
The concentration of the ammonium ceric nitrate aqueous solution is 0.0005mol/L-0.0015mol/L in step 2.
The concentration of manganese nitrate aqueous solution is 0.0005mol/L-0.0015mol/L in step 2.
The ammonium ceric nitrate aqueous solution and manganese nitrate aqueous solution mixed volume ratio in step 2 are 1-3:1-3.
The template aqueous solution and the mixed volume of mixed solution A ratio are 1-3 in step 3:1-3.
The cleaning solution that washing in step 4 is used is deionized water.
The beneficial effects of the invention are as follows the present invention is prepared for many using sodium carboxymethylcellulose as template using template Hole CeO2/ MnO/C composites, preparation technology is simple, cost is low, reaction temperature and reaction time are easy to control, product electric conductivity It is good with structural stability.
Brief description of the drawings
Fig. 1 is the porous C eO obtained by a kind of preparation method embodiment 1 of porous oxidation cerium composite of the invention2/ The XRD spectra of MnO/C composites;
Fig. 2 is the porous C eO obtained by a kind of preparation method embodiment 2 of porous oxidation cerium composite of the invention2/ The Raman collection of illustrative plates of MnO/C composites;
Fig. 3 is the porous C eO obtained by a kind of preparation method embodiment 3 of porous oxidation cerium composite of the invention2/ The SEM photograph of MnO/C composites;
Fig. 4 is the porous C eO obtained by a kind of preparation method embodiment 4 of porous oxidation cerium composite of the invention2/ The TEM photos of MnO/C composites;
Fig. 5 is the porous C eO obtained by a kind of preparation method embodiment 5 of porous oxidation cerium composite of the invention2/ MnO/C composites are used for the cyclical stability figure of ultracapacitor.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of preparation method of porous oxidation cerium composite of the present invention, specifically implements according to following steps:
Step 1, compound concentration is used as the template aqueous solution for 1%-5% from sodium carboxymethyl cellulose solution.
Step 2, compound concentration is the 0.0005mol/L-0.0015mol/L ammonium ceric nitrate aqueous solution and compound concentration respectively For 0.0005mol/L-0.0015mol/L manganese nitrate aqueous solution, then the ammonium ceric nitrate aqueous solution and manganese nitrate aqueous solution are pressed It is 1-3 according to volume ratio:1-3 is mixed, and obtains mixed solution A;
Step 3, it is 1-3 according to volume ratio by mixed solution A made from the template aqueous solution made from step 1 and step 2: 1-3 is mixed, and is stirred 1h-5h, is obtained mixed solution B;
Step 4, the mixed solution B that step 3 is obtained is washed using deionized water, be then placed in baking oven 30 Dried at a temperature of DEG C -80 DEG C, dried product is heated up with 1 DEG C/min-10 DEG C/min heating rate under an argon atmosphere 2h-6h is calcined to 500 DEG C -800 DEG C, porous C eO is obtained2/ MnO/C composites.
The present invention uses 50% manganese nitrate in manganese nitrate aqueous solution.
Embodiment 1
Compound concentration is used as template for 1% sodium carboxymethyl cellulose solution;Another compound concentration is 0.0008mol/L The ammonium ceric nitrate aqueous solution and the manganese nitrate aqueous solution that concentration is 0.0008mol/L;Then it is 0.0008mol/L nitre to take 10L concentration Sour cerium aqueous ammonium and 10L concentration mix for 0.0008mol/L manganese nitrate aqueous solution, obtain mixed solution A;Take 10L templates The agent aqueous solution is added in mixed solution A, then stirs 1h, obtains mixed solution B;By the mixed solution B being stirred spend from Sub- water washing, is then placed in baking oven and is dried at a temperature of 40 DEG C, by gained sample under an argon atmosphere with 2 DEG C/min after drying Heating rate, 2h is calcined at 500 DEG C, that is, obtains porous C eO2/ MnO/C composites.
As shown in figure 1, the porous C eO obtained by embodiment 12The XRD spectra of/MnO/C composites, can be with from Fig. 1 See that prepared sample has CeO really2And MnO.
Embodiment 2
Compound concentration is used as template for 1% sodium carboxymethyl cellulose solution;Another compound concentration is 0.001mol/L The ammonium ceric nitrate aqueous solution and the manganese nitrate aqueous solution that concentration is 0.001mol/L;Then it is 0.001mol/L nitric acid to take 10L concentration Cerium aqueous ammonium and 20L concentration mix for 0.001mol/L manganese nitrate aqueous solution, obtain mixed solution A;By 10L template water Solution is added in mixed solution A, when then stirring 2h, obtains mixed solution B;By the mixed solution B deionizations being stirred Water washing;It is then placed in baking oven and is dried at a temperature of 40 DEG C, by gained sample under an argon atmosphere with 3 DEG C/min's after dries Heating rate, calcines 4h at 500 DEG C, that is, obtains porous C eO2/ MnO/C composites.
As shown in Fig. 2 being the porous C eO obtained by embodiment 22The Raman collection of illustrative plates of/MnO/C composites, from Fig. 2 It can be seen that prepared sample strictly CeO2/ MnO/C composite.
Embodiment 3
Compound concentration is used as template for 2% sodium carboxymethyl cellulose solution;Another compound concentration is 0.001mol/L The ammonium ceric nitrate aqueous solution and the manganese nitrate aqueous solution that concentration is 0.0005mol/L;Then it is 0.001mol/L nitric acid by 10L concentration Cerium aqueous ammonium and 30L concentration mix for 0.0005mol/L manganese nitrate aqueous solution, obtain mixed solution A;By 30L templates The aqueous solution is added in mixed solution A, then stirs 1h;The mixed solution being stirred is washed with deionized;It is then placed in Dried in baking oven at a temperature of 80 DEG C, by gained sample under an argon atmosphere with 5 DEG C/min heating rate after drying, 800 3h is calcined at DEG C, that is, obtains porous C eO2/ MnO/C composites.
As shown in figure 3, being the porous C eO obtained by embodiment 32The SEM photograph of/MnO/C composites, can from Fig. 3 To see that prepared material is porous pattern.
Embodiment 4
Compound concentration is used as template for 3% sodium carboxymethyl cellulose solution;Another compound concentration is 0.0005mol/L The ammonium ceric nitrate aqueous solution and the manganese nitrate aqueous solution that concentration is 0.001mol/L;Then it is 0.0005mol/L nitric acid by 30L concentration Cerium aqueous ammonium and 10L concentration mix for 0.001mol/L manganese nitrate aqueous solution, obtain mixed solution A;By 40L template water Solution is added in mixed solution A, then stirs 5h, obtains mixed solution B;By the mixed solution B deionized waters being stirred Washing;It is then placed in baking oven and is dried at a temperature of 60 DEG C, by gained sample under an argon atmosphere with 5 DEG C/min liter after dries Warm speed, calcines 6h at 600 DEG C, that is, obtains porous C eO2/ MnO/C composites.
As shown in figure 4, being the porous C eO obtained by embodiment 42The TEM photos of/MnO/C composites, enter from Fig. 4 One step can determine that prepared material is loose structure.
Embodiment 5
Compound concentration is used as template for 5% sodium carboxymethyl cellulose solution;Another compound concentration is 0.0005mol/L The ammonium ceric nitrate aqueous solution and the manganese nitrate aqueous solution that concentration is 0.0015mol/L;Then it is 0.0005mol/L nitre by 20L concentration Sour cerium aqueous ammonium and 10L concentration mix for 0.0015mol/L manganese nitrate aqueous solution, obtain mixed solution A;By 60L templates The agent aqueous solution is added in mixed solution A, then stirs 1h, mixed solution B;By the mixed solution B deionized waters being stirred Washing;It is then placed in baking oven and is dried at a temperature of 40 DEG C, by gained sample under an argon atmosphere with 6 DEG C/min liter after dries Warm speed, calcines 3h at 700 DEG C, that is, obtains porous C eO2/ MnO/C composites.
As shown in figure 5, being the porous C eO obtained by embodiment 52/ MnO/C composites are used for the circulation of ultracapacitor Stability diagram, shows that prepared composite has good chemical property according to cyclical stability figure.
Embodiment 6
Compound concentration is used as template for 3% sodium carboxymethyl cellulose solution;Another compound concentration is 0.0015mol/L The ammonium ceric nitrate aqueous solution and the manganese nitrate aqueous solution that concentration is 0.001mol/L;Then it is 0.0015mol/L nitric acid by 20L concentration Cerium aqueous ammonium and 30L concentration mix for 0.001mol/L manganese nitrate aqueous solution, obtain mixed solution A;By 40L template water Solution is added in mixed solution A, then stirs 3h, obtains mixed solution B;By the mixed solution B deionized waters being stirred Washing;It is then placed in baking oven and is dried at a temperature of 30 DEG C, by gained sample under an argon atmosphere with 10 DEG C/min's after dries Heating rate, calcines 3h at 600 DEG C, that is, obtains porous C eO2/ MnO/C composites.
Embodiment 7
Compound concentration is used as template for 5% sodium carboxymethyl cellulose solution;Another compound concentration is 0.0005mol/L The ammonium ceric nitrate aqueous solution and the manganese nitrate aqueous solution that concentration is 0.0015mol/L;Then it is 0.0005mol/L nitre by 10L concentration Sour cerium aqueous ammonium and 10L concentration mix for 0.0015mol/L manganese nitrate aqueous solution, obtain mixed solution A;By 60L templates The agent aqueous solution is added in mixed solution A, then stirs 3h, mixed solution B;By the mixed solution B deionized waters being stirred Washing;It is then placed in baking oven and is dried at a temperature of 50 DEG C, by gained sample under an argon atmosphere with 1 DEG C/min liter after dries Warm speed, calcines 5h at 800 DEG C, that is, obtains porous C eO2/ MnO/C composites.
Cerium source and manganese source are directly mixed using sodium carboxymethylcellulose as template, pass through the step system of template one by the present invention There must be the CeO of porous pattern2/ MnO/C composites, utilize the huge specific surface area of loose structure and the good conduction of carbon Property, it can apply in fields such as ultracapacitors.

Claims (7)

1. a kind of preparation method of porous oxidation cerium composite, it is characterised in that specifically implement according to following steps:
Step 1, the template aqueous solution is prepared;
Step 2, the ammonium ceric nitrate aqueous solution is prepared respectively and manganese nitrate aqueous solution is prepared, then by the ammonium ceric nitrate aqueous solution and nitric acid The manganese aqueous solution is mixed, and obtains mixed solution A;
Step 3, the template aqueous solution made from step 1 is added in mixed solution made from step 2, stirs 1h-5h, obtain Mixed solution B;
Step 4, the mixed solution B that step 3 is obtained is washed, is then placed in baking oven and is dried at a temperature of 30 DEG C -80 DEG C, Dried product is warming up at 500 DEG C -800 DEG C with 1 DEG C/min-10 DEG C/min heating rate under an argon atmosphere and calcined 2h-6h, obtains porous C eO2/ MnO/C composites.
2. the preparation method of a kind of porous oxidation cerium composite according to claim 1, it is characterised in that in step 1 Described template is that the concentration of the template aqueous solution is 1%-5% from sodium carboxymethylcellulose.
3. a kind of preparation method of porous oxidation cerium composite according to claim 2, it is characterised in that the step The concentration of the ammonium ceric nitrate aqueous solution is 0.0005mol/L-0.0015mol/L in 2.
4. a kind of preparation method of porous oxidation cerium composite according to claim 3, it is characterised in that the step The concentration of manganese nitrate aqueous solution is 0.0005mol/L-0.0015mol/L in 2.
5. the preparation method of a kind of porous oxidation cerium composite according to claim 4, it is characterised in that in step 2 The described ammonium ceric nitrate aqueous solution and manganese nitrate aqueous solution mixed volume ratio are 1-3:1-3.
6. a kind of preparation method of porous oxidation cerium composite according to claim 5, it is characterised in that the step The template aqueous solution and the mixed volume of mixed solution A ratio are 1-3 in 3:1-3.
7. the preparation method of a kind of porous oxidation cerium composite according to claim 1, it is characterised in that in step 4 The cleaning solution that described washing is used is deionized water.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110697799A (en) * 2019-10-16 2020-01-17 河南电池研究院有限公司 Preparation method of porous lithium ion battery anode material
CN111151237A (en) * 2020-01-20 2020-05-15 云南电网有限责任公司电力科学研究院 Preparation method of noble metal catalyst
CN114939407A (en) * 2022-07-06 2022-08-26 四川大学 Method for synthesizing loose porous manganese oxide and composite oxide thereof

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CN110697799A (en) * 2019-10-16 2020-01-17 河南电池研究院有限公司 Preparation method of porous lithium ion battery anode material
CN111151237A (en) * 2020-01-20 2020-05-15 云南电网有限责任公司电力科学研究院 Preparation method of noble metal catalyst
CN114939407A (en) * 2022-07-06 2022-08-26 四川大学 Method for synthesizing loose porous manganese oxide and composite oxide thereof

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