CN106984305B - A kind of high-efficient electrolytic water catalyst HRu4O8Micron bar and preparation method thereof - Google Patents

A kind of high-efficient electrolytic water catalyst HRu4O8Micron bar and preparation method thereof Download PDF

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CN106984305B
CN106984305B CN201710311836.7A CN201710311836A CN106984305B CN 106984305 B CN106984305 B CN 106984305B CN 201710311836 A CN201710311836 A CN 201710311836A CN 106984305 B CN106984305 B CN 106984305B
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hru
micron bar
hco
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CN106984305A (en
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杜春雨
王雅静
尹鸽平
韩国康
孙雍荣
钱正义
高云智
左朋建
程新群
马玉林
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Harbin Institute of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46Ruthenium, rhodium, osmium or iridium
    • B01J23/462Ruthenium
    • B01J35/33
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/46109Electrodes
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/46109Electrodes
    • C02F2001/46133Electrodes characterised by the material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/46Apparatus for electrochemical processes
    • C02F2201/461Electrolysis apparatus
    • C02F2201/46105Details relating to the electrolytic devices
    • 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
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

A kind of high-efficient electrolytic water catalyst HRu4O8Micron bar, it is related to a kind of high-efficient electrolytic water catalyst HRu4O8Micron bar and preparation method thereof.The purpose of the present invention is to solve existing elctro-catalysts can not be simultaneously the problem of showing excellent catalytic performance and stability on HER and OER.HRu of the present invention4O8The atomic ratio of H:Ru:O is 1:4:8, HRu in micron bar4O8The diameter of micron bar is 1~10 μm, and length is 5~100 μm.The preparation method comprises the following steps: one, preparation RuO2Nanoparticle;Two, ruthenate micron bar is prepared;Three, HRu is prepared4O8Micron bar.HRu prepared by the present invention4O8Micron bar can be applied to HER, OER, and performance and stability are excellent.The present invention is applied to electro-catalysis field.

Description

A kind of high-efficient electrolytic water catalyst HRu4O8Micron bar and preparation method thereof
Technical field
The present invention relates to a kind of high-efficient electrolytic water catalyst HRu4O8Micron bar and preparation method thereof.
Background technique
Hydrogen has many advantages, such as that abundance, calorific value are high and pollution-free, it is considered to be substitution can not be again as energy carrier The ideal chose of raw fossil fuel.Electrolyzed alkaline water is due to its is environmental-friendly, low for equipment requirements, output stablizes, is highly-safe Widely paid close attention to.Electrolysis water includes to produce hydrogen (HER) and produce oxygen (OER) two half-reactions, and Pt is considered as best HER Catalyst, but Pt is expensive, and the activity in alkaline solution is poor with stability, seriously limits its extensive use; RuO2It is considered as best one of OER catalyst, however its performance degradation is serious, and OER is four electronic processes, dynamics is slow Slowly, overpotential is higher, so that the virtual voltage of electrolysis water is much higher than its theoretical value (1.23V), high energy consumption limitation resulting from Its extensive use.
In order to reduce the overpotential of HER and OER, a series of HER and OER catalyst phases with greater activity and stability After being reported.However, two distinct types of catalyst usually works under different pH environment, working environment it is incompatible Property and prepare different catalyst and the high cost of bring limits its application in complete solution water.Therefore, it develops in alkalinity In electrolyte simultaneously have the elctro-catalyst of excellent HER and OER Activity and stabill for reduce electrolysis water equipment manufacturing costs, Simplify operation, energy saving have great importance.
Summary of the invention
The purpose of the present invention is to solve existing elctro-catalyst can not show on HER and OER simultaneously it is excellent The problem of catalytic performance and stability, provides a kind of high-efficient electrolytic water catalyst HRu4O8Micron bar and preparation method thereof.
A kind of high-efficient electrolytic water catalyst HRu of the present invention4O8The atomic ratio of H:Ru:O is 1:4:8, HRu in micron bar4O8It is micro- The diameter of rice stick is 1~10 μm, and length is 5~100 μm.A kind of high-efficient electrolytic water catalyst HRu of the present invention4O8The system of micron bar Preparation Method carries out according to the following steps:
One, RuO2The preparation of nanoparticle: with molar ratio being 1:(1~20 by ruthenium presoma and nitrate) ratio be dissolved in In water, stirring obtains mixed solution to being uniformly mixed, and the concentration of ruthenium presoma is 1~100g/L in mixed solution, will mix molten Liquid drying, obtains solid, then solid is put into container, then 0.5~10h is kept the temperature at inert atmosphere, 200~400 DEG C, then 1~10h is kept the temperature at 400~700 DEG C, is taken out after cooling, is washed 3~10 times, and drying obtains RuO2Nanoparticle;
Two, the preparation of ruthenate micron bar: by RuO2Nanoparticle and carbonate or bicarbonate in molar ratio (0.5~ 10): 1 ratio mixing is then placed in container, then keep the temperature 2~30h at inert atmosphere, 300~1200 DEG C, takes after cooling Out, it washs 3~10 times, drying obtains ruthenate micron bar;
Three, HRu4O8The preparation of micron bar: ruthenate micron bar is added in the acid solution that concentration is 0.1M~5M, 30 1~7d is stirred at~150 DEG C, is washed 3~10 times, drying;Again 150~1000 DEG C of 1~30h of heat preservation to get arrive HRu4O8Micron Stick;Wherein the ratio of ruthenate micron bar and acid solution is 1g:(50~500) mL.
Beneficial effects of the present invention:
One, HRu of the invention4O8Micron bar is applied to HER, OER, and has excellent performance, and obtains one kind in alkaline electrolysis HER and OER shows the bifunctional electrocatalyst of excellent catalytic activity under liquid system, can high-efficient electrolytic water;
Two, HRu of the invention4O8The HER of micron bar, business Pt/C in 1M KOH is in 10mA/cm2Under overpotential point Not Wei 50mV, 108mV (not carrying out IR correction), performance is much better than business Pt/C.HRu4O8Micron bar, business RuO2In 1M OER in KOH is in 10mA/cm2Under overpotential be only 300mV, 323mV (not carrying out IR correction), performance is better than business RuO2
Three, the catalyst prepared by the present invention shows excellent stability, HRu after i-t 8h in HER4O8Micron bar, The current density of business Pt/C is respectively the 104.66% of its corresponding initial value, 10.69%, it is seen that prepared HRu4O8It is micro- Rice stick stability is much better than business Pt/C;HRu after i-t 8h in OER4O8Micron bar, business RuO2Current density be respectively 96.65%, the 61.07% of its corresponding initial value, it is seen that prepared HRu4O8Micron bar stability is much better than business RuO2
Detailed description of the invention
Fig. 1 is HRu prepared by embodiment 14O8The XRD diagram of micron bar;
Fig. 2 is HRu prepared by embodiment 14O8Micron bar SEM figure;
Fig. 3 is HRu prepared by embodiment 14O8The HER performance map of micron bar and business Pt/C, electrolyte are 1M KOH, are swept Speed is 10mV/s, and revolving speed 1600rpm, potential range is 0.05~-0.3V vs RHE;Wherein a is business Pt/C, and b is HRu4O8Micron bar;
Fig. 4 is HRu prepared by embodiment 14O8Micron bar and business RuO2OER performance map, electrolyte be 1M KOH, sweep Speed is 10mV/s, and revolving speed 1600rpm, potential range is 1.0~1.8V vs RHE;Wherein a is business RuO2, b HRu4O8 Micron bar;
Fig. 5 is HRu prepared by embodiment 14O8Micron bar is 10mA/cm in HER current density with business Pt/C2Current potential Under i-t curve, electrolyte be 1M KOH, revolving speed 1600rpm;Wherein a is business Pt/C, b HRu4O8Micron bar;
Fig. 6 is HRu prepared by embodiment 14O8Micron bar and business RuO2It is 10mA/cm in OER current density2Current potential Under i-t curve, electrolyte be 1M KOH, revolving speed 1600rpm;Wherein a is business RuO2, b HRu4O8Micron bar.
Specific embodiment
Specific embodiment 1: a kind of high-efficient electrolytic water catalyst HRu of present embodiment4O8The original of H:Ru:O in micron bar Son is than being 1:4:8, HRu4O8The diameter of micron bar is 1~10 μm, and length is 5~100 μm.
Present embodiment the utility model has the advantages that
One, the HRu of present embodiment4O8Micron bar is applied to HER, OER, and has excellent performance, and obtains one kind in alkalinity HER and OER shows the bifunctional electrocatalyst of excellent catalytic activity under electrolyte system, can high-efficient electrolytic water;
Two, the HRu of present embodiment4O8The HER of micron bar, business Pt/C in 1M KOH is in 10mA/cm2Under it is excessively electric Position is respectively 50mV, 108mV (not carrying out IR correction), and performance is much better than business Pt/C.HRu4O8Micron bar, business RuO2In 1M OER in KOH is in 10mA/cm2Under overpotential be only 300mV, 323mV (not carrying out IR correction), performance is better than business RuO2
Three, catalyst prepared by present embodiment shows excellent stability, HRu after i-t 8h in HER4O8It is micro- Rice stick, business Pt/C current density be respectively the 104.66% of its corresponding initial value, 10.69%, it is seen that it is prepared HRu4O8Micron bar stability is much better than business Pt/C;HRu after i-t 8h in OER4O8Micron bar, business RuO2Current density Respectively 96.65%, the 61.07% of its corresponding initial value, it is seen that prepared HRu4O8Micron bar stability is much better than business RuO2
Specific embodiment 2: a kind of high-efficient electrolytic water catalyst HRu of present embodiment4O8The preparation method of micron bar is It carries out according to the following steps:
One, RuO2The preparation of nanoparticle: with molar ratio being 1:(1~20 by ruthenium presoma and nitrate) ratio be dissolved in In water, stirring obtains mixed solution to being uniformly mixed, and the concentration of ruthenium presoma is 1~100g/L in mixed solution, will mix molten Liquid drying, obtains solid, then solid is put into container, then 0.5~10h is kept the temperature at inert atmosphere, 200~400 DEG C, then 1~10h is kept the temperature at 400~700 DEG C, is taken out after cooling, is washed 3~10 times, and drying obtains RuO2Nanoparticle;
Two, the preparation of ruthenate micron bar: by RuO2Nanoparticle and carbonate or bicarbonate in molar ratio (0.5~ 10): 1 ratio mixing is then placed in container, then keep the temperature 2~30h at inert atmosphere, 300~1200 DEG C, takes after cooling Out, it washs 3~10 times, drying obtains ruthenate micron bar;
Three, HRu4O8The preparation of micron bar: ruthenate micron bar is added in the acid solution that concentration is 0.1M~5M, 30 1~7d is stirred at~150 DEG C, is washed 3~10 times, drying;Again 150~1000 DEG C of 1~30h of heat preservation to get arrive HRu4O8Micron Stick;Wherein the ratio of ruthenate micron bar and acid solution is 1g:(50~500mL).
Specific embodiment 3: present embodiment is unlike specific embodiment two: ruthenium presoma is in step 1 RuCl3·nH2O、Ru(acac)3、Ru2(CO)6Cl4、K2RuCl5·nH2In three (2,2- bipyridyl) ruthenic chlorides of hydration of O and six One or more are mixed by any ratio.It is other to be identical with embodiment two.
Specific embodiment 4: present embodiment is unlike specific embodiment two or three: nitrate NaNO3、 KNO3、LiNO3、RbNO3、Sr(NO3)2、Ba(NO3)2、Mg(NO3)2、Fe(NO3)2、Fe(NO3)3、CuNO3、 Cu(NO3)2、Zn (NO3)2、Pb(NO3)2、Mn(NO3)2、Bi(NO3)3、CsNO3、Ca(NO3)2、Ni(NO3)2、Co(NO3)2With Al (NO3)3In one Kind or several be mixed by any ratio.It is other identical as specific embodiment two or three.
Specific embodiment 5: unlike one of present embodiment and specific embodiment two to four: in step 2 Carbonate or bicarbonate are Na2CO3、K2CO3、Li2CO3、Rb2CO3、SrCO3、BaCO3、MgCO3、FeCO3、 Fe2(CO3)3、 CuCO3、Cu2CO3、ZnCO3、PbCO3、MnCO3、Bi2(CO3)3、Cs2CO3、CaCO3、 NiCO3、CoCO3、Al2(CO3)3、 NaHCO3、KHCO3、LiHCO3、RbHCO3、Sr(HCO3)2、 Ba(HCO3)2、Mg(HCO3)2、Fe(HCO3)2、Fe(HCO3)3、Cu (HCO3)2、Zn(HCO3)2、Pb(HCO3)2、 Mn(HCO3)2、Bi(HCO3)3、CsHCO3、Ca(HCO3)2、Ni(HCO3)2And Co (HCO3)2One or more of be mixed by any ratio.It is other identical as one of specific embodiment two to four.
Specific embodiment 6: unlike one of present embodiment and specific embodiment two to five: step 1 and two In inert atmosphere be nitrogen, argon gas or helium.It is other identical as one of specific embodiment two to five.
Specific embodiment 7: unlike one of present embodiment and specific embodiment two to six: described in step 3 Acid solution be H2SO4、HNO3、HCl、H3PO4、HClO4、CH3CH(OH)COOH、C6H8O7、HOOCCOOH、 HCOOH、CH3COOH And CH3CH2One or more of COOH is mixed by any ratio.It is other identical as one of specific embodiment two to six.
Specific embodiment 8: unlike one of present embodiment and specific embodiment two to seven: Step 1: two and The rate to heat up in three is 1~50 DEG C/min.It is other identical as one of specific embodiment two to seven.
Specific embodiment 9: unlike one of present embodiment and specific embodiment two to eight: step 1 and three In stirring be mechanical stirring, magnetic agitation or ultrasonic agitation.It is other identical as one of specific embodiment two to eight.
Specific embodiment 10: unlike one of present embodiment and specific embodiment two to nine: in step 3 150~1000 DEG C of 1~30h of heat preservation are kept the temperature under atmosphere protection, wherein atmosphere be air, oxygen, hydrogen, nitrogen, argon gas, Gaseous mixture, carbon monoxide, ammonia or the vacuum of the gaseous mixture of hydrogen and nitrogen, the gaseous mixture of hydrogen and argon gas, hydrogen and helium. It is other identical as one of specific embodiment two to nine.
Specific embodiment 11: unlike one of present embodiment and specific embodiment two to ten: hydrogen and nitrogen The gaseous mixture of gas, the gaseous mixture of hydrogen and argon gas, hydrogen and helium gaseous mixture in the volume content of hydrogen be 1~20%.Its It is identical as one of specific embodiment two to ten.
A kind of high-efficient electrolytic water catalyst HRu of embodiment 1, the present embodiment4O8The preparation method of micron bar is according to the following steps It carries out:
One, RuO2The preparation of nanoparticle: by RuCl3·nH2O and NaNO3It is soluble in water for the ratio of 1:8 with molar ratio, Stirring obtains mixed solution, RuCl in mixed solution to being uniformly mixed3·nH2The concentration of O is 15g/L, and mixed solution is dried, Solid is obtained, then solid is put into container, rises to 400 DEG C in a nitrogen atmosphere with the heating rate of 10 DEG C/min, heat preservation 0.5h, then 500 DEG C are risen to the heating rate of 5 DEG C/min, 1h is then kept the temperature, is taken out after cooling, is washed 7 times, drying obtains RuO2Nanoparticle;
Two, the preparation of ruthenate micron bar: by RuO2Nanoparticle and K2CO3The ratio mixing of 8:5 in molar ratio, then It is put into container, in a nitrogen atmosphere, is risen at 850 DEG C with the heating rate of 5 DEG C/min and keep the temperature 12h, taken out after cooling, wash 7 times, drying obtains KRu4O8Micron bar;
Three, HRu4O8The preparation of micron bar: by KRu4O8Micron bar is added in the HCl that concentration is 1M, is stirred at 60 DEG C 3d is washed 7 times, drying;Again under air with the heating rate of 5 DEG C/min, 300 DEG C of heat preservation 2h to get arrive HRu4O8Micron bar;Its Middle KRu4O8The ratio of micron bar and acid solution is 1g:100mL.
Fig. 1 is HRu manufactured in the present embodiment4O8The XRD diagram of micron bar, it can be seen that it is hollandite type knot from XRD Structure determines that group is divided into HRu4O8, because being in itself KRu4O8It is obtained after acid exchange completely, it is exactly HRu that K, which is exchanged into H,4O8; Fig. 2 is HRu manufactured in the present embodiment4O8The SEM of micron bar schemes, and as can be seen from Figure 2 a diameter of 1~4 μm, length is 3~ 15μm。
Catalyst is dispersed by uniform sizing material using ethyl alcohol when the present embodiment electro-chemical test, the rotation in platinum carbon material is added dropwise The carrying capacity for turning to control catalyst on disk electrode (RDE) is 0.2mg/cm2, and be 20 μ L/cm by dripping quantity2Mass fraction is added dropwise For 0.05% Nafion ethanol solution, it is dipped in after dry in the 1M KOH solution of argon gas saturation.
It is tested when test using electrochemical workstation, using the RED of dropwise addition catalyst as working electrode, Hg/HgO As reference electrode, Pt piece is used as to electrode.
HRu manufactured in the present embodiment4O8The HER of micron bar, business Pt/C in 1M KOH is in 10mA/cm2Under overpotential Respectively 50mV, 108mV (not carrying out IR correction), performance is much better than business Pt/C, as shown in Figure 3.HRu4O8Micron bar, quotient Industry RuO2OER in 1M KOH is in 10mA/cm2Under overpotential be only 300mV, 323mV (not carrying out IR correction), performance Better than business RuO2, as shown in Figure 4.Catalyst prepared by the present embodiment shows excellent stability, as in Fig. 5 in HER HRu after i-t 8h4O8Micron bar, business Pt/C current density be respectively its corresponding initial value 104.66%, 10.69%, it is seen that prepared HRu4O8Micron bar stability is much better than business Pt/C.As in Fig. 6 in OER after i-t 8h HRu4O8Micron bar, business RuO2Current density be respectively the 96.65% of its corresponding initial value, 61.07%, it is seen that it is made Standby HRu4O8Micron bar stability is much better than business RuO2
A kind of high-efficient electrolytic water catalyst HRu of embodiment 2, the present embodiment4O8The preparation method of micron bar is according to the following steps It carries out:
One, RuO2The preparation of nanoparticle: by Ru (acac)3And KNO3It is soluble in water for the ratio of 1:4 with molar ratio, it stirs It mixes to being uniformly mixed, obtains mixed solution, Ru (acac) in mixed solution3Concentration be 20g/L, mixed solution is dried, is obtained To solid, then solid is put into container, rises to 300 DEG C under an argon atmosphere with the heating rate of 10 DEG C/min, keeps the temperature 1h, 450 DEG C are risen to the heating rate of 10 DEG C/min again, 2h is then kept the temperature, is taken out after cooling, is washed 7 times, drying obtains RuO2It receives Rice corpuscles;
Two, the preparation of ruthenate micron bar: by RuO2Nanoparticle and Na2CO3The ratio mixing of 2:1 in molar ratio, then It is put into container, under helium atmosphere, is risen at 750 DEG C with the heating rate of 10 DEG C/min and keep the temperature 10h, taken out, wash after cooling It washs 7 times, dries, obtain NaRu4O8Micron bar;
Three, HRu4O8The preparation of micron bar: by NaRu4O8Micron bar is added to the HNO that concentration is 0.5M3In, it is stirred at 30 DEG C 5d is mixed, is washed 7 times, drying;Again under a nitrogen with the heating rate of 10 DEG C/min, 400 DEG C of heat preservation 3h to get arrive HRu4O8Micron Stick;Wherein NaRu4O8The ratio of micron bar and acid solution is 1g:150mL.
A kind of high-efficient electrolytic water catalyst HRu of embodiment 3, the present embodiment4O8The preparation method of micron bar is according to the following steps It carries out:
One, RuO2The preparation of nanoparticle: by Ru2(CO)6Cl4And LiNO3It is soluble in water for the ratio of 1:5 with molar ratio, Stirring obtains mixed solution, Ru in mixed solution to being uniformly mixed2(CO)6Cl4Concentration be 25g/L, mixed solution is dried, Solid is obtained, then solid is put into container, rises to 350 DEG C under helium atmosphere with the heating rate of 5 DEG C/min, heat preservation 1h, then 450 DEG C are risen to the heating rate of 5 DEG C/min, 3h is then kept the temperature, is taken out after cooling, is washed 6 times, drying obtains RuO2 Nanoparticle;
Two, the preparation of ruthenate micron bar: by RuO2Nanoparticle and KHCO3The ratio mixing of 3:1 in molar ratio, then It is put into container, under an argon atmosphere, is risen at 800 DEG C with the heating rate of 8 DEG C/min and keep the temperature 5h, taken out after cooling, washing 8 Secondary, drying obtains KRu4O8Micron bar;
Three, HRu4O8The preparation of micron bar: by KRu4O8Micron bar is added to the H that concentration is 0.2M2SO4In, it is stirred at 40 DEG C 2d is mixed, is washed 8 times, drying;Again under oxygen with the heating rate of 2 DEG C/min, 350 DEG C of heat preservation 4h to get arrive HRu4O8Micron Stick;Wherein KRu4O8The ratio of micron bar and acid solution is 1g:200mL.
A kind of high-efficient electrolytic water catalyst HRu of embodiment 4, the present embodiment4O8The preparation method of micron bar is according to the following steps It carries out:
One, RuO2The preparation of nanoparticle: by K2RuCl5·nH2O and Sr (NO3)2It is dissolved in molar ratio for the ratio of 1:3 In water, stirring obtains mixed solution, K in mixed solution to being uniformly mixed2RuCl5·nH2The concentration of O is 35g/L, will be mixed molten Liquid drying, obtains solid, then solid is put into container, rise to 300 in a nitrogen atmosphere with the heating rate of 5 DEG C/min DEG C, 2h is kept the temperature, then rise to 500 DEG C with the heating rate of 10 DEG C/min, then keep the temperature 1h, taken out after cooling, washed 7 times, drying, Obtain RuO2Nanoparticle;
Two, the preparation of ruthenate micron bar: by RuO2Nanoparticle and Rb2CO3The ratio mixing of 4:1 in molar ratio, then It is put into container, under helium atmosphere, is risen at 600 DEG C with the heating rate of 3 DEG C/min and keep the temperature 20h, taken out after cooling, wash 6 times, drying obtains RbRu4O8Micron bar;
Three, HRu4O8The preparation of micron bar: by RbRu4O8Micron bar is added to the CH that concentration is 0.5M3In COOH, 50 DEG C Lower stirring 2d is washed 6 times, drying;Again in H2With the heating rate of 3 DEG C/min, 350 DEG C of heat preservation 5h under/Ar=5/95 atmosphere, i.e., Obtain HRu4O8Micron bar;Wherein RbRu4O8The ratio of micron bar and acid solution is 1g:300mL.
The HRu of Examples 1 to 4 preparation4O8Micron bar can be applied to HER, OER, and have excellent performance, and obtains one kind and exists HER and OER shows the bifunctional electrocatalyst of excellent catalytic performance and stability under alkaline electrolysis liquid system, can efficient electric Xie Shui.

Claims (5)

1. a kind of high-efficient electrolytic water catalyst HRu4O8Micron bar, it is characterised in that the HRu4O8The original of H:Ru:O in micron bar Son is than being 1:4:8, HRu4O8The diameter of micron bar is 1~10 μm, and length is 5~100 μm;Wherein high-efficient electrolytic water catalyst HRu4O8The preparation method of micron bar carries out according to the following steps:
One, RuO2The preparation of nanoparticle: with molar ratio being 1:(1~20 by ruthenium presoma and nitrate) ratio it is soluble in water, Stirring obtains mixed solution to being uniformly mixed, and the concentration of ruthenium presoma is 1~100g/L in mixed solution, and mixed solution is dried It is dry, solid is obtained, then solid is put into container, then keeps the temperature 0.5~10h at inert atmosphere, 200~400 DEG C, then 1~10h is kept the temperature at 400~700 DEG C, is taken out after cooling, is washed 3~10 times, and drying obtains RuO2Nanoparticle;
Two, the preparation of ruthenate micron bar: by RuO2Nanoparticle and carbonate or bicarbonate be in molar ratio (0.5~10): 1 Ratio mixing, be then placed in container, then at inert atmosphere, 300~1200 DEG C keep the temperature 2~30h, take out, wash after cooling It washs 3~10 times, dries, obtain ruthenate micron bar;
Three, HRu4O8The preparation of micron bar: ruthenate micron bar is added in the acid solution that concentration is 0.1M~5M, 30~150 1~7d is stirred at DEG C, is washed 3~10 times, drying;Again 150~1000 DEG C of 1~30h of heat preservation to get arrive HRu4O8Micron bar;Its The ratio of middle ruthenate micron bar and acid solution is 1g:(50~500) mL;
Wherein ruthenium presoma is RuCl in step 13·nH2O、Ru(acac)3、Ru2(CO)6Cl4、K2RuCl5·nH2O and six water One or more of three (2,2- bipyridyl) ruthenic chlorides are closed to be mixed by any ratio;
Nitrate is NaNO in step 13、KNO3、LiNO3、RbNO3、Sr(NO3)2、Ba(NO3)2、Mg(NO3)2、Fe(NO3)2、Fe (NO3)3、CuNO3、Cu(NO3)2、Zn(NO3)2、Pb(NO3)2、Mn(NO3)2、Bi(NO3)3、CsNO3、Ca(NO3)2、Ni(NO3)2、 Co(NO3)2With Al (NO3)3One or more of be mixed by any ratio;
Carbonate or bicarbonate in step 2 are Na2CO3、K2CO3、Li2CO3、Rb2CO3、SrCO3、BaCO3、MgCO3、 FeCO3、Fe2(CO3)3、CuCO3、Cu2CO3、ZnCO3、PbCO3、MnCO3、Bi2(CO3)3、Cs2CO3、CaCO3、NiCO3、CoCO3、 Al2(CO3)3、NaHCO3、KHCO3、LiHCO3、RbHCO3、Sr(HCO3)2、Ba(HCO3)2、Mg(HCO3)2、Fe(HCO3)2、Fe (HCO3)3、Cu(HCO3)2、CuHCO3、Zn(HCO3)2、Pb(HCO3)2、Mn(HCO3)2、Bi(HCO3)3、CsHCO3、Ca(HCO3)2、 Ni(HCO3)2With Co (HCO3)2One or more of be mixed by any ratio;
Acid solution described in step 3 is H2SO4、HNO3、HCl、H3PO4、HClO4、CH3CH(OH)COOH、C6H8O7、HOOCCOOH、 HCOOH、CH3COOH and CH3CH2One or more of COOH is mixed by any ratio.
2. a kind of high-efficient electrolytic water catalyst HRu according to claim 14O8Micron bar, it is characterised in that step 1 and two In inert atmosphere be nitrogen, argon gas or helium.
3. a kind of high-efficient electrolytic water catalyst HRu according to claim 14O8Micron bar, it is characterised in that Step 1: two It is 1~50 DEG C/min with the heating rate in three.
4. a kind of high-efficient electrolytic water catalyst HRu according to claim 14O8Micron bar, it is characterised in that step 1 and three In stirring be mechanical stirring, magnetic agitation or ultrasonic agitation.
5. a kind of high-efficient electrolytic water catalyst HRu according to claim 14O8Micron bar, it is characterised in that in step 3 150~1000 DEG C of 1~30h of heat preservation are kept the temperature under atmosphere protection, wherein atmosphere be air, oxygen, hydrogen, nitrogen, argon gas, Gaseous mixture, carbon monoxide, ammonia or the vacuum of the gaseous mixture of hydrogen and nitrogen, the gaseous mixture of hydrogen and argon gas, hydrogen and helium.
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* Cited by examiner, † Cited by third party
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* Cited by examiner, † Cited by third party
Title
Characterization of K-Promoted Ru Catalysts for Ammonia;William Pyrz et.al;《Top Catal》;20081231;第50卷;第180-191页
Electronic characterization of alkali ruthenium hollandites:;M.L. Foo et.al;《Materials Research Bulletin》;20041231;第39卷;第1663-1670页

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