CN109759066B - Preparation method of boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst - Google Patents

Preparation method of boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst Download PDF

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CN109759066B
CN109759066B CN201910085743.6A CN201910085743A CN109759066B CN 109759066 B CN109759066 B CN 109759066B CN 201910085743 A CN201910085743 A CN 201910085743A CN 109759066 B CN109759066 B CN 109759066B
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graphene
oxide
cobalt
nickel
boron
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CN109759066A (en
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姜媛媛
逯一中
董凯
陈传霞
倪鹏娟
张成会
王波
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University of Jinan
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Abstract

The invention provides a preparation method of a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst, which comprises the following steps: s1 preparation of Co-containing2+And Ni2+The aqueous solution precursor of graphene oxide; s2, adding NaBH4Dropwise adding an aqueous solution to the above solution containing Co2+And Ni2+Reacting the graphene oxide aqueous solution precursor at room temperature to obtain graphene loaded with a cobalt-nickel compound; s3, heating the graphene loaded with the cobalt-nickel oxide to 300-600 ℃ at the speed of 2-10 ℃/min in an inert atmosphere, and burning to obtain the boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst. The invention has the following beneficial effects: the preparation method of the boron-doped graphene-loaded cobalt nickel oxide is low in cost, simple and feasible, and high in controllability.

Description

Preparation method of boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst
Technical Field
The invention relates to a preparation method of a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst, belonging to the technical field of electrochemical catalysis.
Background
Hydrogen-oxygen fuel cells are currently the focus of research in the energy field due to their high energy density and almost zero carbon emission. The development of a practical hydrogen-oxygen fuel cell has great significance to the energy and environmental problems in the world today. The reduction of the preparation cost of hydrogen is a key link for popularizing the hydrogen-oxygen fuel cell. One more environmentally friendly method for preparing hydrogen is to electrolyze water to produce hydrogen, wherein the water electrolysis hydrogen production reaction is divided into an oxygen evolution reaction at the anode and a hydrogen evolution reaction at the cathode. The four-electron process of slow reaction of anode oxygen evolution is one of the key factors restricting the application of electrolyzed water, and the search of a proper catalyst is an important way to solve the problem.
The traditional oxygen evolution electrocatalyst with excellent performance is generally an electrocatalyst based on iridium oxide and ruthenium oxide, and the further practical application is limited due to the expensive price and low earth reserves. In recent years, researchers have explored a variety of non-noble metal-based oxygen evolution electrocatalysts, particularly a variety of compounds based on cobalt and/or nickel as constituent elements, such as oxides, hydroxides, phosphides, borides, and the like. Recent research work shows that the nickel/cobalt oxide shows very good oxygen evolution electrocatalysis performance (Angew. chem. int. Ed.2017,56, 1-6; ChemSuschem,2018,11,2752-2757), and the preparation method is simple and easy to implement, has the characteristics of low solubility, high catalytic activity, stable chemical property and the like, and is a very promising non-noble metal oxygen evolution electrocatalyst. However, most of the reported values for nickel/cobalt oxides are still far from noble metal-based electrocatalysts and far from commercial use.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a preparation method of a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst.
The invention is realized by the following technical scheme:
the invention provides a preparation method of a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst, which comprises the following steps:
s1 preparation of Co-containing2+And Ni2+The aqueous solution precursor of graphene oxide;
s2, adding NaBH4Dropwise adding an aqueous solution to the above solution containing Co2+And Ni2+Reacting in the graphene oxide aqueous solution precursor at room temperature to obtain a graphene-loaded cobalt-nickel compound;
s3, heating the boron-doped graphene-loaded cobalt-nickel compound to 300-600 ℃ at a speed of 2-10 ℃/min in an inert atmosphere, and burning to obtain the boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst.
Preferably, the Co-containing compound2+And Ni2+In the aqueous solution precursor of graphene oxide of (2), Co2+And Ni2+The ratio of the amounts of the substances (1-4): (4-1).
Preferably, the Co-containing compound2+And Ni2+The preparation method of the graphene oxide aqueous solution precursor comprises the following steps:
Dissolving cobalt salt and nickel salt in deionized water to obtain a mixed solution;
and adding single-layer graphene oxide into the mixed solution, and carrying out ultrasonic treatment for 30min at room temperature to obtain a mixed solution of a precursor containing graphene oxide.
Preferably, the NaBH is4The concentration of the aqueous solution is 0.1-1 mol/L.
Preferably, the NaBH is4The dropping rate of the aqueous solution was 50. mu.L/s.
As a preferable scheme, the burning time is 1-5 h.
Compared with the prior art, the invention has the following beneficial effects:
1. the preparation method of the boron-doped graphene-loaded cobalt nickel oxide is low in cost, simple and feasible, and high in controllability;
2. the boron-doped graphene-loaded cobalt nickel oxide shows extremely high oxygen evolution electrocatalytic activity in an alkaline medium and high long-time operation stability;
3. the electrocatalysis performance of oxygen precipitation of the product is optimized by adjusting the proportion of cobalt salt and nickel salt in the precursor solution.
4. Annealing treatment is carried out on the product after sodium borohydride reduction at different temperatures, the crystal structure of the product is regulated, and the oxygen precipitation electrocatalysis performance of the product is further improved;
5. the cobalt-nickel binary oxide and the boron-doped graphene are synergistically interacted, so that the electrocatalysis performance of the boron-doped graphene-loaded cobalt-nickel oxide composite material in oxygen precipitation is greatly improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic diagram of a process for synthesizing boron-doped graphene-supported cobalt nickel oxide according to the present invention;
fig. 2 is a scanning electron microscope image of boron-doped graphene-supported cobalt nickel oxide obtained in example 1 of the present invention;
fig. 3 is a transmission electron microscope image of boron-doped graphene supported cobalt nickel oxide obtained in example 1 of the present invention;
fig. 4 is an XRD spectrum of the boron-doped graphene supported cobalt nickel oxide obtained in example 1 of the present invention;
fig. 5 is a diagram of LSV of graphene-supported cobalt nickel compound in 1.0M KOH electrolyte obtained in example 1 of the present invention;
fig. 6 is a LSV diagram of boron doped graphene supported cobalt nickel oxide in 1.0M KOH electrolyte obtained in example 1 of the present invention;
fig. 7 is a LSV diagram of oxygen evolution reaction of boron doped graphene supported cobalt nickel oxide obtained in example 1 of the present invention and other comparative materials in 1.0M KOH electrolyte;
FIG. 8 is a corresponding Tafel plot derived from the LSV curve of FIG. 7;
FIG. 9 is a 10mA/cm cobalt nickel oxide supported on boron doped graphene in 1.0mol/LKOH electrolyte 2Long-term operation stability map at current density of (a).
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the invention.
Example 1
In this embodiment, a cobalt-nickel bimetallic oxide oxygen evolution catalyst loaded with boron-doped graphene is prepared, and as shown in fig. 1, the specific steps are as follows:
0.5mmol of Co (NO)3)2·6H2O and 0.5mmol Ni (NO)3)2·6H2Dissolving O into 100mL of deionized water, and stirring to fully dissolve; adding 15mg of monolayer graphene oxide into the solution, and stirring at room temperature for 30 minutes to fully dissolve the monolayer graphene oxide, wherein the color of the solution is brown black, and the Co-containing solution is obtained2+And Ni2+The aqueous solution precursor of graphene oxide;
0.5mol/LNaBH4The aqueous solution is added dropwise with stirring to the Co-containing solution2+And Ni2+The graphene oxide aqueous solution precursor generates a small amount of bubbles in the adding process, is stirred for 40 minutes at room temperature after being dropwise added, grows cobalt-nickel oxide on the surface of graphene, and is washed and dried to obtain a graphene-loaded cobalt-nickel compound;
And transferring the graphene loaded with the cobalt-nickel oxide into a porcelain boat, placing the porcelain boat in the middle of a tube furnace, introducing argon and exhausting air for half an hour, heating from 25 ℃ to 400 ℃ at the speed of 5 ℃/min, keeping at 400 ℃ for 2 hours, and naturally cooling to room temperature to obtain the boron-doped graphene-loaded cobalt-nickel bimetallic oxide composite material.
Scanning electron microscope analysis is performed on the boron-doped graphene-loaded cobalt nickel oxide composite material obtained in the embodiment, and the result is shown in fig. 2, and graphene with a large-lamellar fold structure can be obviously seen in a sample after high-temperature treatment. After transmission electron microscope analysis, the result is shown in fig. 3, a small-area sheet structure is distributed on the surface of the graphene, and by combining with XRD test, as shown in fig. 4, a structure in which the small sheet structure is a cobalt-nickel binary oxide can be obtained.
The method for detecting the activity of the electrochemical oxygen generation reaction of the material obtained before and after the ignition in the embodiment 1 comprises the following specific steps: the rotating disc electrode is loaded with a catalyst as a working electrode under the three-electrode condition, wherein the loading of the catalyst is 0.45mg/cm2The carbon rod is used as a counter electrode, the saturated calomel electrode is used as a reference electrode, the electrolyte of the electrochemical reaction is 1mol/L KOH solution, and scanning is carried out under the state of the rotating speed of 1600 rmp. The scan rate for the LSV test was 5 mV/s. As shown in fig. 5 and 6, Co: the Ni proportion is 1: 1 and the CoNiO obtained after treatment at 400 DEG C xthe/B-graphene sample shows the best oxygen evolution electrocatalytic activity at 10mA/cm2Only 310mV of overpotential is required for the current density of (d). Is superior to other materials (such as graphene, cobalt nickel oxide and the like) in comparative experiments and even superior to the commercial RuO with excellent performance recognized at present2Material (fig. 7). The CoNiO can be obtained by calculating Tafel curve (FIG. 8) from LSV curvexthe/B-graphene also has the minimum Tafel slope, and the Tafel slope value of the/B-graphene is 54.8mV/dec, which indicates that the CoNiOx/B-graphene material has very fast kinetics. In addition, the catalyst was at 10mA/cm2The potential change is very small after 20h of the test at the current density of (FIG. 9), which shows that the stability of the long-term operation is higher.
Example 2
The embodiment prepares a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst, as shown in fig. 1, and comprises the following specific steps:
0.33mmol of Co (NO)3)2·6H2O and 0.66mmol Ni (NO)3)2·6H2Dissolving O into 100mL of deionized water, and stirring to fully dissolve; adding 15mg of monolayer graphene oxide into the solution, and stirring at room temperature for 30 minutes to fully dissolve the monolayer graphene oxide, wherein the color of the solution is brown black, and the Co-containing solution is obtained 2+And Ni2+The aqueous solution precursor of graphene oxide;
0.5mol/LNaBH4The aqueous solution is added dropwise with stirring to the Co-containing solution2+And Ni2+The graphene oxide aqueous solution precursor generates a small amount of bubbles in the adding process, is stirred for 40 minutes at room temperature after being dropwise added, grows cobalt-nickel oxide on the surface of graphene, and is washed and dried to obtain a graphene-loaded cobalt-nickel compound;
and transferring the graphene of the boron-doped graphene-loaded cobalt-nickel compound into a porcelain boat, placing the porcelain boat in the middle of a tube furnace, introducing argon gas for exhausting air for half an hour, heating the porcelain boat from 25 ℃ to 400 ℃ at the speed of 5 ℃/min, preserving the heat at 400 ℃ for 2 hours, and naturally cooling the porcelain boat to room temperature to obtain the boron-doped graphene-loaded cobalt-nickel bimetallic oxide composite material.
Electrochemical tests were carried out in the same manner as in example 1. As shown in FIG. 6, the resulting product was at 10mAcm-2The overpotential at the current density is similar to that of example 1, but the Tafel slope is 76.5mV dec-1The electrochemical performance was slightly inferior to that of example 1.
Example 3
The embodiment prepares a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst, as shown in fig. 1, and comprises the following specific steps:
0.66mmol of Co (NO) 3)2·6H2O and 0.33mmol Ni (NO)3)2·6H2Dissolving O into 100mL of deionized water, and stirring to fully dissolve; adding 15mg of monolayer graphene oxide into the solution, and stirring at room temperature for 30 minutes to fully dissolve the monolayer graphene oxide, wherein the color of the solution is brown black, and the Co-containing solution is obtained2+And Ni2+The aqueous solution precursor of graphene oxide;
0.5mol/LNaBH4The aqueous solution is added dropwise with stirring to the Co-containing solution2+And Ni2+The graphene oxide aqueous solution precursor generates a small amount of bubbles in the adding process, is stirred for 40 minutes at room temperature after being dropwise added, grows cobalt-nickel oxide on the surface of graphene, and is washed and dried to obtain a graphene-loaded cobalt-nickel compound;
and transferring the graphene of the boron-doped graphene-loaded cobalt-nickel compound into a porcelain boat, placing the porcelain boat in the middle of a tube furnace, introducing argon gas for exhausting air for half an hour, heating the porcelain boat from 25 ℃ to 400 ℃ at the speed of 5 ℃/min, preserving the heat at 400 ℃ for 2 hours, and naturally cooling the porcelain boat to room temperature to obtain the boron-doped graphene-loaded cobalt-nickel bimetallic oxide composite material.
Scanning electron microscope analysis is performed on the boron-doped graphene-loaded cobalt nickel oxide composite material obtained in the embodiment, and the result is shown in fig. 2, and graphene with a large-lamellar fold structure can be obviously seen in a sample after high-temperature treatment. After transmission electron microscope analysis, the result is shown in fig. 3, a small-area sheet structure is distributed on the surface of the graphene, and by combining with XRD test, as shown in fig. 4, a structure in which the small sheet structure is a cobalt-nickel binary oxide can be obtained.
Electrochemical tests were carried out in the same manner as in example 1. As shown in FIG. 6, the resulting product was at 10mA cm-2The overpotential at the current density is similar to that of example 1, but the Tafel slope is 76.6mV dec-1The electrochemical performance was slightly inferior to that of example 1.
Example 4
The embodiment prepares a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst, as shown in fig. 1, and comprises the following specific steps:
0.5mmol of Co (NO)3)2·6H2O and 0.5mmol Ni (NO)3)2·6H2Dissolving O into 100mL of deionized water, and stirring to fully dissolve; adding 15mg of monolayer graphene oxide into the solution, and stirring at room temperature for 30 minutes to fully dissolve the monolayer graphene oxide, wherein the color of the solution is brown black, and the Co-containing solution is obtained2+And Ni2+Oxygen of (2)Dissolving a graphene aqueous solution precursor;
0.5mol/LNaBH4The aqueous solution is added dropwise with stirring to the Co-containing solution2+And Ni2+The graphene oxide aqueous solution precursor generates a small amount of bubbles in the adding process, is stirred for 40 minutes at room temperature after being dropwise added, grows cobalt-nickel oxide on the surface of graphene, and is washed and dried to obtain a graphene-loaded cobalt-nickel compound; the product obtained was used as electrocatalyst without heating.
Electrochemical tests were carried out in the same manner as in example 1. As shown in FIG. 5, the resulting product was at 10mA cm -2The overpotential at the current density is 285mV, and the Tafel slope is 157.3mV dec-1The electrochemical performance is far from that of example 1.
Comparative example 1
The comparative example differs from example 1 only in that the molar ratio of Co ions and Ni ions is 1: 5.
comparative example 2
The comparative example differs from example 1 only in that the molar ratio of Co ions to Ni ions was 5: 1.
the foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims (1)

1. A preparation method of a boron-doped graphene-loaded cobalt-nickel bimetallic oxide oxygen evolution catalyst is characterized by comprising the following steps:
s1, mixing 0.5 mmol of Co (NO)3）2·6H2O and 0.5 mmol Ni (NO)3）2·6H2Dissolving O into 100 mL of deionized water, and stirring to fully dissolve; adding 15 mg of monolayer graphene oxide into the solution, and stirring at room temperature for 30 minutes to fully dissolve the monolayer graphene oxide, wherein the color of the solution is brown black, and the Co-containing solution is obtained2+And Ni2+The aqueous solution precursor of graphene oxide;
s2, mixing 0.5 mol/L NaBH 4The aqueous solution is added dropwise with stirring to the Co-containing solution2+And Ni2+The graphene oxide aqueous solution precursor generates a small amount of bubbles in the adding process, is stirred for 40 minutes at room temperature after being dropwise added, grows cobalt-nickel oxide on the surface of graphene, and is washed and dried to obtain a graphene-loaded cobalt-nickel compound;
s3, transferring the graphene loaded with the cobalt-nickel oxide into a porcelain boat, placing the porcelain boat in the middle of a tube furnace, introducing argon to exhaust air for half an hour, heating the graphene from 25 ℃ to 400 ℃ at the speed of 5 ℃/min, keeping the graphene at 400 ℃ for 2 hours, and naturally cooling the graphene to room temperature to obtain the boron-doped graphene-loaded cobalt-nickel bimetallic oxide composite material.
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CN111111731A (en) * 2019-12-20 2020-05-08 济南大学 Preparation method of graphene-loaded nitrogen-boron-doped nickel phosphide electrolyzed water catalyst
CN111111721B (en) * 2020-01-19 2022-04-26 西北师范大学 Preparation and application of boron-doped carbon shell-coated CoNi nanoparticle composite material
CN111961217B (en) * 2020-08-26 2022-04-22 合肥工业大学 Preparation method and application of amorphous metal oxide induced NiCo-BTC nanosheet
CN112853372B (en) * 2021-01-05 2024-03-22 辽宁大学 Preparation method and application of electrocatalyst B-MnO/CNT

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108411324A (en) * 2018-03-29 2018-08-17 华南理工大学 The sulfur and nitrogen co-doped graphene-supported cobalt sulfide nickel catalytic material of one kind and preparation and application
CN108831759A (en) * 2018-06-26 2018-11-16 桂林电子科技大学 One kind is based on graphene/chitosan multi-porous carbon composite and its preparation method and application

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108411324A (en) * 2018-03-29 2018-08-17 华南理工大学 The sulfur and nitrogen co-doped graphene-supported cobalt sulfide nickel catalytic material of one kind and preparation and application
CN108831759A (en) * 2018-06-26 2018-11-16 桂林电子科技大学 One kind is based on graphene/chitosan multi-porous carbon composite and its preparation method and application

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
A Bifunctional Hybrid Electrocatalyst for Oxygen Reduction and Evolution: Cobalt Oxide Nanoparticles Strongly Coupled to B,N-Decorated Graphene;Yun Tong et al;《Angew. Chem. Int. Ed.》;20170519;第56卷;图5，Supporting Information：S1. Experimental Section *
B-Doped Graphene as Catalyst To Improve Charge Rate of Lithium−Air Battery;Xiaodong Ren et al;《J. Phys. Chem. C》;20140910;第118卷;全文 *
Cobalt oxide-coated N- and B-doped grapheme hollow spheres as bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions;Zhongqing Jiang et al;《J. Mater. Chem. A》;20160314;第4卷;全文 *
Nickel-cobalt oxides supported on Co/N decorated graphene as an excellent bifunctional oxygen catalyst;Yongchao Hao et al;《J. Mater. Chem. A》;20170222;第5卷;图5、表1 *
The doping effect on the catalytic activity of graphene for oxygen evolution reaction in a lithium–air battery: a first-principles study;Xiaodong Ren et al;《Phys. Chem. Chem. Phys.》;20150506;第17卷;全文 *

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