CN110931814A - Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell - Google Patents

Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell Download PDF

Info

Publication number
CN110931814A
CN110931814A CN201911220891.0A CN201911220891A CN110931814A CN 110931814 A CN110931814 A CN 110931814A CN 201911220891 A CN201911220891 A CN 201911220891A CN 110931814 A CN110931814 A CN 110931814A
Authority
CN
China
Prior art keywords
villus
carbonized
catalyst
quassia
fuel cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911220891.0A
Other languages
Chinese (zh)
Inventor
李昕航
王贵领
赵婧
周春良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Engineering University
Original Assignee
Harbin Engineering University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin Engineering University filed Critical Harbin Engineering University
Priority to CN201911220891.0A priority Critical patent/CN110931814A/en
Publication of CN110931814A publication Critical patent/CN110931814A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/92—Metals of platinum group
    • H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
    • H01M4/926—Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/9041—Metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/9075—Catalytic material supported on carriers, e.g. powder carriers
    • H01M4/9083—Catalytic material supported on carriers, e.g. powder carriers on carbon or graphite
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Catalysts (AREA)
  • Inert Electrodes (AREA)

Abstract

The invention provides a method for preparing a carbonized quassia villus carbonization tube by taking carbonized quassia villus supported platinum as a catalyst of a sodium borohydride fuel cell; taking NaPtCl containing 0.02-0.06mol/L4And 0.02mol dm‑3The NaCl mixed solution is used as the electrodeposition solution and adopts 3-8mA cm‑2And (4) carrying out current, and depositing for 0.5-1.5h to finally obtain the catalyst taking carbonized quassia villus supported platinum as the sodium borohydride fuel cell. The carbonized tawny quack villus has sp, sp2, sp3 and other hybridization orbital characteristics, good electronic conductivity and can effectively improve the rapid permeation of electrolyte, the electronic conduction and the electrochemical performance of an electrode; the hollow carbonized Carnis Coturnicis Japonicae villus wall has multiple pores for providing channels for reactant, and the carbonized Carnis Coturnicis Japonicae villus tube can oxidize and hydrolyze H generated by electricity2Is sealed in the tube, improves NaBH4The electrooxidation performance and the utilization rate of the catalyst.

Description

Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell
Technical Field
The invention relates to a catalyst, in particular to a catalyst taking carbonized quassia villus-supported platinum as a sodium borohydride fuel cell.
Background
The direct sodium borohydride fuel cell is a fuel cell which takes liquid NaBH4 solution as anode fuel, and the electrode reaction is shown as formula (1):
BH4-+8OH-→BO2-+4H2O+8e- E＝-1.24V vs.SHE (1)
the direct sodium borohydride fuel cell has very high energy density (specific energy is 9300Wh/kg), specific capacity (5668Ah/kg) and cell voltage (cathode is O)2Time 1.64V); NaBH4Non-flammable, low toxicity (harmless unless swallowed), and no CO production2Theoretically, NaBH4 could use a non-platinum catalyst; NaBH4The solution can act as a heat exchange medium to cool the battery without additional cooling plates; electroosmotic drag of water can be used as the cathode reactant without the need for humidification as with hydrogen. These characteristics are very beneficial for the design and assembly of fuel cells. NaBH4Mainly focusing on noble metals (Pt, Pd, Au, etc.) and transition metals (Ni, Co, hydrogen storage alloys, etc.), the greatest problem is NaBH4The hydrolysis of (a) produces hydrogen, which greatly reduces the fuel utilization. Therefore, not only the inhibition of NaBH4 hydrolysis and the reduction of catalyst cost are considered, but also high electron transfer number, reaction rate and electrochemical performance are ensured.
Therefore, in practice, the electrode potential of the anode is at a mixed potential between sodium borohydride and hydrogen electrooxidation; if the hydrogen released by hydrolysis is too much to cause the electro-oxidation reaction, the hydrogen is released in the form of hydrogen so that the oxidation of borohydride is incomplete, and meanwhile, the generated hydrogen can increase the difficulty in designing the battery. See Stroman R, Jackson G, Garsany Y, et al. A calibre hydrogenated-borohydrideffeue cell model.J Power Sources,2014, 271: 421-.
Disclosure of Invention
The invention aims to improve NaBH4The electrooxidation performance and the utilization rate of the catalyst are provided, and the carbonized quassia villus loaded platinum is used as the catalyst of the sodium borohydride fuel cell.
The purpose of the invention is realized as follows:
a catalyst taking carbonized quassia villus supported platinum as a sodium borohydride fuel cell is prepared by the following steps:
5g of the fluffs of the yellow quail are weighed,adding 100ml of acetone, carrying out ultrasonic treatment for 2 hours, and removing dust and impurities; adding 1L of distilled water, stirring, washing repeatedly to remove Carnis Coturnicis Japonicae seed; pouring out distilled water, and performing vacuum drying at 100 ℃; adding treated Carnis Coturnicis Japonicae villus into 100mL of 0.1-0.2mol/L sodium hydroxide solution, stirring for 0.5-1.0h, and evaporating water at 80 deg.C; grinding the obtained fine hairs of the quassia japonica into powder, putting the powder into a quartz boat, sending the quartz boat into a tube furnace, heating to 350 ℃ at a heating rate of 5 ℃/min for 2.5 to 3 hours under the protection of argon, then heating to 650 ℃ at a heating rate of 10 ℃/min for 2 to 3 hours, and then naturally cooling to obtain a carbonized tube of the fine hairs of the quassia japonica; taking NaPtCl containing 0.02-0.06mol/L4And 0.02mol dm-3The NaCl mixed solution is used as the electrodeposition solution and adopts 3-8mA cm-2And (4) carrying out current, and depositing for 0.5-1.5h to finally obtain the catalyst taking carbonized quassia villus supported platinum as the sodium borohydride fuel cell.
The invention also includes such features:
the catalyst comprises Pt-loaded catalysts such as a quay villus carbonization tube, a quay villus carbonization fragment and the like, and a mixture of the Pt-loaded catalysts and the Pt-loaded catalysts;
the catalyst comprises non-noble metal catalysts such as Ni, Co and the like, noble metal catalysts such as Pt, Pd, Au and the like, and mixtures thereof.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the natural quanlandia villi is a hollow tubular object, after carbonization, a tubular carbon skeleton can be formed, micropores are formed in the pipe wall, platinum is loaded into the quanlandia carbide villi to prepare a hollow carbonized quanlandia villi-loaded platinum catalyst, the electrooxidation reaction of sodium borohydride is promoted, and H generated by hydrolysis can be adsorbed2；
Secondly, the carbonized taenia japonica villus has various hybridization orbital characteristics such as sp, sp2, sp3 and the like, a huge specific surface, good electronic conductivity, acid and alkali resistance, and can effectively improve the rapid permeation of electrolyte, the conduction of electrons and the electrochemical performance of electrodes;
third, the hollow carbonized yellow quail villus wall has many pores to provide reactantThe channel, the carbonized tube of the wampee floss can oxidize and hydrolyze the H produced by electricity2Is sealed in the tube, greatly improves NaBH4The electrooxidation performance and the utilization rate of the catalyst.
Detailed Description
The present invention is described in further detail below.
The invention aims to provide a catalyst taking carbonized quassia villus supported platinum as a sodium borohydride fuel cell. The natural wampee floss is a hollow tubular object, and can form a tubular carbon skeleton after carbonization, and the tube wall is provided with micropores. And loading platinum into the carbonized quanla villus to prepare the hollow carbonized quanla villus-loaded platinum catalyst. The carbonized tawny quan villus has various hybridization orbital characteristics of sp, sp2, sp3 and the like, a huge specific surface, good electronic conductivity, acid and alkali resistance, and can effectively improve the rapid permeation of electrolyte, the conduction of electrons and the electrochemical performance of electrodes. The platinum catalyst loaded on the villus of the hollow carbonized quassia can promote the electrooxidation reaction of sodium borohydride and adsorb H generated by hydrolysis2Greatly improve NaBH4Electrical oxidation performance and utilization.
The preparation method of the hollow carbonized yellow quail villus supported platinum catalyst comprises the following steps:
weighing 5g of wampee villi, adding 100ml of acetone, performing ultrasonic treatment for 2h, and removing dust and impurities; adding 1L of distilled water, stirring, washing repeatedly to remove Carnis Coturnicis Japonicae seed; pouring out distilled water, and performing vacuum drying at 100 ℃; adding treated Carnis Coturnicis Japonicae villus into 100mL of 0.1-0.2mol/L sodium hydroxide solution, stirring for 0.5-1.0h, and evaporating water at 80 deg.C; grinding the obtained wampee villi into powder, putting the powder into a quartz boat, sending the quartz boat into a tube furnace, heating to 350 ℃ at the heating rate of 5 ℃/min for 2.5-3h under the protection of argon, then heating to 650 ℃ at the heating rate of 10 ℃/min for 2-3h, and then naturally cooling to obtain the wampee villi carbonization tube. Taking NaPtCl containing 0.02-0.06mol/L4And 0.02mol dm-3The NaCl mixed solution is used as the electrodeposition solution and adopts 3-8mA cm-2Current is carried out, deposition is carried out for 0.5-1.5h, and finally the hollow carbonized yellow quail feather supported platinum is preparedA catalyst.
The method is characterized in that the platinum catalyst is loaded on the hollow carbonized quanla villus, so that the electrocatalytic performance of platinum on borohydride is improved, the hydrogen escape is reduced, and the NaBH is improved4The utilization ratio of (2). The essence of the invention is that on the basis of the anode catalyst of the direct borohydride fuel cell, the platinum catalyst is used for loading the hollow carbonized yellow quay wool, so that the electrochemical oxidation activity of the catalyst on borohydride is increased, the discharge performance of the borohydride anode is improved, and the escape of hydrogen is reduced.
Example 1
Adopts a hollow carbonized yellow quail villus supported platinum catalyst as a working electrode, a carbon rod as a counter electrode, Ag/AgCl as a reference electrode, 2M NaOH and 0.10M NaBH4In the solution, under the voltage of-0.5V vs. Ag/AgCl, the current density reaches 408mA/cm2，NaBH4No bubbles escape during the electro-oxidation process.
Example 2
The method adopts a hollow carbonized yellow quack villus supported palladium catalyst as a working electrode, a carbon rod as a counter electrode, Ag/AgCl as a reference electrode, 2M NaOH and 0.10M NaBH4In the solution, the timing current density reaches 398mA/cm under the voltage of-0.5V vs. Ag/AgCl2，NaBH4No bubbles escape during the electro-oxidation process.
Hollow carbonized yellow quay floss loaded platinum catalysis NaBH4The natural quanlandia villus is a hollow tubular object, after carbonization, a tubular carbon skeleton can be formed, the pipe wall is provided with micropores, platinum is loaded into the carbonized quanlandia villus to prepare a hollow carbonized quanlandia villus-loaded platinum catalyst, the electrooxidation reaction of sodium borohydride is promoted, and H generated by hydrolysis can be adsorbed2. The hollow carbonized Carnis Coturnicis Japonicae villus tube wall has many pores to provide channels for reactant, and the carbonized Carnis Coturnicis Japonicae villus tube can oxidize and hydrolyze H generated by electricity2Is sealed in the tube, greatly improves NaBH4The electrooxidation performance and the utilization rate of the catalyst; the catalyst comprises the quails prepared by various methodsPt-loaded catalysts such as vegetable floss carbonization tubes, quassia floss carbonization fragments and the like, and mixtures thereof; the catalyst includes non-noble metal catalyst such as Ni, Co, etc., noble metal catalyst such as Pt, Pd and Au, etc., and their mixture.
In summary, the following steps: the invention discloses a hollow carbonized quassia villus supported platinum catalyst, wherein natural quassia villus is a hollow tubular object, a tubular carbon framework can be formed after carbonization, micropores are formed in the tube wall, platinum is loaded into the carbonized quassia villus to prepare the hollow carbonized quassia villus supported platinum catalyst, the electrooxidation reaction of sodium borohydride is promoted, and H generated by hydrolysis can be adsorbed2. The hollow carbonized Carnis Coturnicis Japonicae villus tube wall has many pores to provide channels for reactant, and the carbonized Carnis Coturnicis Japonicae villus tube can oxidize and hydrolyze H generated by electricity2Is sealed in the tube, greatly improves NaBH4 ofElectrooxidation performance and utilization rate.

Claims (3)

1. A catalyst taking carbonized quassia villus supported platinum as a sodium borohydride fuel cell is characterized by being prepared by the following steps:
weighing 5g of wampee villi, adding 100ml of acetone, performing ultrasonic treatment for 2h, and removing dust and impurities; adding 1L of distilled water, stirring, washing repeatedly to remove Carnis Coturnicis Japonicae seed; pouring out distilled water, and performing vacuum drying at 100 ℃; adding treated Carnis Coturnicis Japonicae villus into 100mL of 0.1-0.2mol/L sodium hydroxide solution, stirring for 0.5-1.0h, and evaporating water at 80 deg.C; grinding the obtained fine hairs of the quassia japonica into powder, putting the powder into a quartz boat, sending the quartz boat into a tube furnace, heating to 350 ℃ at a heating rate of 5 ℃/min for 2.5 to 3 hours under the protection of argon, then heating to 650 ℃ at a heating rate of 10 ℃/min for 2 to 3 hours, and then naturally cooling to obtain a carbonized tube of the fine hairs of the quassia japonica; taking NaPtCl containing 0.02-0.06mol/L4And 0.02mol dm-3The NaCl mixed solution is used as the electrodeposition solution and adopts 3-8mA cm-2And (4) carrying out current, and depositing for 0.5-1.5h to finally obtain the catalyst taking carbonized quassia villus supported platinum as the sodium borohydride fuel cell.
2. The catalyst for fuel cell with carbonized quassia villus supported platinum as claimed in claim 1, wherein the catalyst comprises Pt-supported catalyst such as carbonized tube of quassia villus, carbonized fragment of quassia villus, and their mixture.
3. The catalyst for fuel cell of sodium borohydride prepared from carbonized Carnis Coturnicis Japonicae villus supported platinum as claimed in claim 1 or 2, wherein the catalyst comprises non-noble metal catalyst such as Ni and Co, noble metal catalyst such as Pt, Pd and Au, and their mixture.
CN201911220891.0A 2019-12-03 2019-12-03 Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell Pending CN110931814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911220891.0A CN110931814A (en) 2019-12-03 2019-12-03 Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911220891.0A CN110931814A (en) 2019-12-03 2019-12-03 Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell

Publications (1)

Publication Number Publication Date
CN110931814A true CN110931814A (en) 2020-03-27

Family

ID=69848427

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911220891.0A Pending CN110931814A (en) 2019-12-03 2019-12-03 Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell

Country Status (1)

Country Link
CN (1) CN110931814A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104795576A (en) * 2015-05-05 2015-07-22 哈尔滨工程大学 Catkin hollow carbonization tube composite precious metal fuel-cell catalyst and preparation method of catkin hollow carbonization tube
CN109638296A (en) * 2018-11-08 2019-04-16 福建农林大学 A kind of oxygen reduction catalyst and preparation method thereof based on dandelion
CN109999880A (en) * 2019-04-19 2019-07-12 中国科学院青岛生物能源与过程研究所 N doping porous carbon supported bimetal catalyst as well as preparation method and application thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104795576A (en) * 2015-05-05 2015-07-22 哈尔滨工程大学 Catkin hollow carbonization tube composite precious metal fuel-cell catalyst and preparation method of catkin hollow carbonization tube
CN109638296A (en) * 2018-11-08 2019-04-16 福建农林大学 A kind of oxygen reduction catalyst and preparation method thereof based on dandelion
CN109999880A (en) * 2019-04-19 2019-07-12 中国科学院青岛生物能源与过程研究所 N doping porous carbon supported bimetal catalyst as well as preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
常煜华等: "《墙角的植物》", 30 April 2018 *

Similar Documents

Publication Publication Date Title
CN109778218B (en) Device and method for co-production of hydrogen production and lithium extraction by electrochemistry
CN102315459B (en) Preparation method of porous fuel cell anode material NiCu/C
CN108461763B (en) Cobalt disulfide/sulfur and nitrogen co-doped graphene catalytic material, preparation and application
CN110052277A (en) A kind of preparation method of transiting metal group metal sulfide oxygen-separating catalyst
Feng et al. Recent progress in seawater electrolysis for hydrogen evolution by transition metal phosphides
CN113652707B (en) Nickel telluride hydrogen evolution catalyst and preparation method and application thereof
CN112169812A (en) Preparation method of self-supporting core-shell nano electro-catalyst for full electrolysis of water
CN113019398B (en) High-activity self-supporting OER electrocatalyst material and preparation method and application thereof
CN113445071B (en) Preparation method of self-supporting coral-like array structure electrode
CN113512738B (en) Ternary iron-nickel-molybdenum-based composite material water electrolysis catalyst, and preparation method and application thereof
CN112670526B (en) Preparation method and application of amorphous manganese dioxide modified shrimp shell carbon base frame
CN111672520B (en) Amorphous cobalt borate-nickel selenide @ foam nickel compound, preparation method and application
CN111974398B (en) Thermally-induced full-reconstruction nanowire array and preparation method and application thereof
CN109994744B (en) Nickel-cobalt binary catalyst for promoting direct oxidation of sodium borohydride
CN110931814A (en) Catalyst taking carbonized Youngia japonica villus loaded platinum as sodium borohydride fuel cell
CN216738553U (en) Step-by-step water electrolysis hydrogen production device
CN113061907A (en) Co-based catalyst and application thereof
CN113913857B (en) Ni-Ni 3 C/NC core-shell structure nano material electrocatalyst and preparation method thereof
CN113073336B (en) RuO2Foamed nickel composite electrode and preparation method and application thereof
CN105312049B (en) A kind of forerunner preparation of platinum group catalyst
CN114956019B (en) Method for one-step synthesis of cobalt phosphide by molten salt mediation and application thereof
CN115341233B (en) High-catalysis-stability electrolytic sodium hypochlorite composite cathode and preparation method thereof
CN113249752B (en) Fe2P-WOxPreparation method of oxygen evolution electrocatalyst
Xiong et al. Self-supporting FeCoMoP nanosheets for efficient overall water splitting
CN117987834A (en) Method for preparing porous nickel electrode by molten salt etching

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200327