CN111905765A - 一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法 - Google Patents
一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法 Download PDFInfo
- Publication number
- CN111905765A CN111905765A CN202010650205.XA CN202010650205A CN111905765A CN 111905765 A CN111905765 A CN 111905765A CN 202010650205 A CN202010650205 A CN 202010650205A CN 111905765 A CN111905765 A CN 111905765A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- mnco
- fiber cloth
- oxygen evolution
- preparation
- 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
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 36
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 35
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 35
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000010411 electrocatalyst Substances 0.000 title claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000001301 oxygen Substances 0.000 title claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 7
- 239000004744 fabric Substances 0.000 claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 239000002243 precursor Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 36
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 36
- 239000000243 solution Substances 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- CESXSDZNZGSWSP-UHFFFAOYSA-L manganese(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Mn+2].CC([O-])=O.CC([O-])=O CESXSDZNZGSWSP-UHFFFAOYSA-L 0.000 claims description 11
- 235000019441 ethanol Nutrition 0.000 claims description 10
- 229940082328 manganese acetate tetrahydrate Drugs 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 9
- ZBYYWKJVSFHYJL-UHFFFAOYSA-L cobalt(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Co+2].CC([O-])=O.CC([O-])=O ZBYYWKJVSFHYJL-UHFFFAOYSA-L 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 229940048181 sodium sulfide nonahydrate Drugs 0.000 claims description 8
- WMDLZMCDBSJMTM-UHFFFAOYSA-M sodium;sulfanide;nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Na+].[SH-] WMDLZMCDBSJMTM-UHFFFAOYSA-M 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000001338 self-assembly Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 239000002105 nanoparticle Substances 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 4
- 239000013543 active substance Substances 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000001027 hydrothermal synthesis Methods 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002803 fossil fuel Substances 0.000 description 3
- 150000004763 sulfides Chemical class 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006181 electrochemical material Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(IV) oxide Inorganic materials O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/043—Sulfides with iron group metals or platinum group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/20—Sulfiding
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
Abstract
本发明提供一种自组装生长在碳纤维布上的橄榄球状MnCo2S4微纳米颗粒的制备方法,该材料可直接用作析氧反应电催化剂,具有良好的OER性能、高活性和稳定性。本发明首先通过溶剂热法在碳纤维布上生成出颗粒状的MnCo2S4前驱体,再通过水热法进行硫化,得到生长在碳纤维布上的MnCo2S4微纳米颗粒。该制备方法简单可控,成本低廉。而且碳布具有网状结构,优异的导电性和柔韧性,可作为基底支撑活性物质来制备电极,所得的材料可以直接用作工作电极,无需加入任何的粘合剂,从而有效降低内阻和质量,使材料具有优良的催化性能,对促进绿色化学的发展具有重要意义。
Description
技术领域
本发明涉及电化学材料制备领域,尤其是一种生长在碳纤维布上的橄榄球状MnCo2S4析氧反应电催化剂及其制备方法。
背景技术
能源和环境是当今时代最重要的问题。全球对能源的需求一直在迅速增长,预计在未来15年内能源需求将增长两倍。但是,目前为止,能源消耗中的大部分来自化石燃料,由于储量有限,而且化石燃料是不可再生的,因此,可再生能源的转化是一种显著减少对化石燃料依赖性的令人鼓舞的解决方案。氢气作为清洁、无碳排放和可再生能源的载体能成为近年来清洁能源的研究热点。基于化石燃料的制氢技术虽然技术成熟,但是不仅要消耗大量的化石资源,而且会生成大量的温室气体,对环境产生一定的压力。而电解水制氢则较为清洁、简便、纯度高。而电解水制氢则较为清洁、简便、纯度高。析氧反应(OER)和析氢反应(HER)是电解水过程的两个关键的半反应。其中,析氧反应因其复杂的吸脱附过程和多电子传输过程,直接导致了电解水槽电压增大,能耗剧增,在一定程度上阻碍了电解水过程的发展。目前,商业上采用以IrO2、RuO2为主的贵金属催化剂加速电解水反应。其存在稳定性较差,生产成本高,储存量低等问题,限制了其作为电催化剂材料的大规模使用。因而,研究开发高效、可持续、低廉的电催化剂对电解水装置中替代贵金属具有重要的意义,是开发可再生能源技术的关键。
目前,双金属硫化物因其独特的性质而被广泛研究,例如由于两个金属原子的协同效应比单金属硫化物存在更丰富的氧化还原反应位点。研究人员已经对紧密围绕S2-排列的尖晶石化合物(AB2S4)进行了广泛研究。四面体和八面体的部分或全部位点都A2+和B3+金属阳离子占据。尤其是,钴基双金属硫化物(MCo2S4,其中M=Ni,Fe和Mn)由于其优异的电学和光学特性而表现出优异的性能。MnCo2S4作为超级电容器的电极材料已被广泛研究,但作为水分解的电催化剂尚未被广泛研究。Zhang(C.D.Si;X.P.Zhang,J.Mater.Chem.A.5,(2017)17211)等报道称在钛网上生长的MnCo2S4纳米线阵列可作为OER的有效催化剂。Jadhav(A.Roy;H.S.Jadhav,J.Ind.and Eng.C.71,(2019),452-459)使用两步法生长MnCo2S4薄片,并在碱性条件下用作OER的高活性和稳定的电催化剂。
因此探究MnCo2S4的制备方法从而制备得到性能更为优越、稳定性更强的低成本催化剂对发展环境友好的电解水技术具有重要意义,对促进绿色化学的发展具有重要意义。
发明内容
本发明目的在于提供一种自组装生长在碳纤维布上的橄榄球状MnCo2S4微纳米颗粒的制备方法,该材料可直接用作析氧反应电催化剂,具有良好的OER性能、高活性和稳定性。且该制备方法简单可控,成本低廉。
为达此目的,本发明采用如下技术方案:
一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,具体步骤如下:
(1)称取四水合乙酸锰、四水合乙酸钴、尿素和氟化铵于乙二醇和水的混合溶剂中,充分搅拌溶解完全后得到前驱体溶液;
(2)将碳纤维布置于步骤(1)所配置的溶液中,充分搅拌;
(3)将步骤(2)得到的溶液及碳布转移到反应釜中,密闭,120℃~180℃下反应6~12h,冷却至室温,用水和乙醇洗涤,干燥后得到粉色前驱体;
(4)将步骤(3)所得产物放入含有九水合硫化钠水溶液的反应釜,在120℃~180℃下反应6~9h,自然冷却至室温,洗净干燥后得到生长在碳纤维布上的黑色MnCo2S4。
其中,所述的MnCo2S4为橄榄球状颗粒,颗粒粒径为2-4μm,该颗粒自组装生长在碳纤维布基底上。
优选地,步骤(1)中所述四水合乙酸锰、四水合乙酸钴、尿素和氟化铵按物质的量计,加入比例为1:2:5~10:1~5。
优选地,步骤(1)中所述四水合乙酸锰物质的量为1~5mol。
优选地,步骤(1)中所述乙二醇和水的体积比为1:1。
优选地,步骤(2)中所述碳纤维布尺寸为2×2cm2,清洗方法为:将碳纤维布依次放入丙酮,去离子水,无水乙醇中分别超声清洗10min。
优选地,步骤(2)中所述九水合硫化钠水溶液的浓度为0.01~0.05M。
优选地,步骤(3)和步骤(4)中所述反应釜为聚四氟乙烯内胆的不锈钢反应釜,填充度为60%~80%。
优选地,如权利要求2所述生长在碳纤维布上的MnCo2S4微纳米颗粒的制备方法,其特征在于,步骤(3)和步骤(4)中所述干燥温度为60℃。
与现有技术相比,本发明的有益效果:(1)本发明公开了一种制备过程简便、成本低廉的MnCo2S4析氧反应电催化剂的制备方法;(2)碳布具有网状结构,优异的导电性和柔韧性,可作为基底支撑活性物质来制备电极,所得的材料可以直接用作工作电极,无需加入任何的粘合剂,从而有效降低内阻和质量,使材料的催化性能得到有效的提高。
附图说明
图1是实施例1制得的生长在碳纤维布上的橄榄球状MnCo2S4微纳米颗粒X射线衍射(XRD)图;
图2是实施例1制得的生长在碳纤维布上的橄榄球状MnCo2S4微纳米颗粒扫描电子显微镜(SEM)图;
图3是实施例1制得的生长在碳纤维布上的橄榄球状MnCo2S4微纳米颗粒OER性能测试图;
具体实施方式
为了更加明了地说明本发明,通过实施案例进行进一步的描述。以下实施例不限制本发明的范围。凡在本发明的精神和原则之内所做的任何修改、等同替代、改进等均应包含在本发明的保护范围之内。
实施例1:
(1)精确称取1.5mmol四水合乙酸锰、3mmol四水合乙酸钴、13.5mmol尿素和4.5mmol氟化铵于50ml乙二醇和水(v乙二醇:v水=1:1)的混合溶剂中,充分搅拌溶解完全后得到前驱体溶液;
(2)裁剪2×2cm2碳纤维布,放入丙酮,去离子水,无水乙醇中分别超声清洗10min。将清洗好的碳布放入步骤(1)所配置的溶液中,充分搅拌;
(3)将步骤(2)得到的溶液及碳布转移到70ml聚四氟乙烯内胆的不锈钢反应釜中,密闭,180℃下反应9h,冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到粉色前驱体;
(4)将步骤(3)所得产物放入含有50ml浓度为0.01M的九水合硫化钠水溶液的70ml聚四氟乙烯内胆的不锈钢反应釜,在180℃下反应9h,自然冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到黑色产物MnCo2S4。
将上述材料剪裁成合适的大小,组成三电极体系,对产物的OER性能进行测试。所用电解液为1mol L-1的KOH溶液,参比电极选用Ag/AgCl电极,对电极选择铂电极。
图1为实施例1材料的X射线衍射(XRD)图,从图中可以看出所得到的产物XRD衍射图谱表明了MnCo2S4复合在碳布基底上,其中衍射角与Co3S4大致相同(JCPDS File No.73-1703),因为MnCo2S4可以看作是Mn原子部分取代了Co原子造成Co3S4晶格的略微偏差。图2为实施例1材料的扫描电子显微镜(SEM)图,可以看出产物是均匀生长在碳纤维布上的MnCo2S4微纳米颗粒。图3为实施例1材料LSV图,生长在碳纤维布上的MnCo2S4微纳米颗粒表现出优异的OER性能。
实施例2:
(1)精确称取2mmol四水合乙酸锰、4mmol四水合乙酸钴、18mmol尿素和6mmol氟化铵于50ml乙二醇和水(v乙二醇:v水=1:1)的混合溶剂中,充分搅拌溶解完全后得到前驱体溶液;
(2)裁剪2×2cm2碳纤维布,放入丙酮,去离子水,无水乙醇中分别超声清洗10min。将清洗好的碳布放入步骤(1)所配置的溶液中,充分搅拌;
(3)将步骤(2)得到的溶液及碳布转移到70ml聚四氟乙烯内胆的不锈钢反应釜中,密闭,180℃下反应9h,冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到粉色前驱体;
(4)将步骤(3)所得产物放入含有50ml浓度为0.01M的九水合硫化钠水溶液的70ml聚四氟乙烯内胆的不锈钢反应釜,在180℃下反应9h,自然冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到黑色产物MnCo2S4。
实施例3:
(1)精确称取1.25mmol四水合乙酸锰、2.5mmol四水合乙酸钴、11.25mmol尿素和3.75mmol氟化铵于50ml乙二醇和水(v乙二醇:v水=1:1)的混合溶剂中,充分搅拌溶解完全后得到前驱体溶液;
(2)裁剪2×2cm2碳纤维布,放入丙酮,去离子水,无水乙醇中分别超声清洗10min。将清洗好的碳布放入步骤(1)所配置的溶液中,充分搅拌;
(3)将步骤(2)得到的溶液及碳布转移到70ml聚四氟乙烯内胆的不锈钢反应釜中,密闭,180℃下反应9h,冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到粉色前驱体;
(4)将步骤(3)所得产物放入含有50ml浓度为0.01M的九水合硫化钠水溶液的70ml聚四氟乙烯内胆的不锈钢反应釜,在180℃下反应9h,自然冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到黑色产物。
实施例4
(1)精确称取1.25mmol四水合乙酸锰、2.5mmol四水合乙酸钴、11.25mmol尿素和10mmol氟化铵于50ml乙二醇和水(v乙二醇:v水=1:1)的混合溶剂中,充分搅拌溶解完全后得到前驱体溶液;
(2)裁剪2×2cm2碳纤维布,放入丙酮,去离子水,无水乙醇中分别超声清洗10min。将清洗好的碳布放入步骤(1)所配置的溶液中,充分搅拌;
(3)将步骤(2)得到的溶液及碳布转移到70ml聚四氟乙烯内胆的不锈钢反应釜中,密闭,180℃下反应9h,冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到粉色前驱体;
(4)将步骤(3)所得产物放入含有50ml浓度为0.01M的九水合硫化钠水溶液的70ml聚四氟乙烯内胆的不锈钢反应釜,在180℃下反应9h,自然冷却至室温,用镊子取出碳布用水和乙醇洗涤,在空气中60℃干燥后得到黑色产物MnCo2S4。
Claims (7)
1.一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,其特征在于,所述的MnCo2S4为橄榄球状颗粒,颗粒粒径为2-4μm,该颗粒自组装生长在碳纤维布基底上,包括如下步骤:
(1)称取四水合乙酸锰、四水合乙酸钴、尿素和氟化铵加入乙二醇和水的混合溶剂中,充分搅拌溶解完全后得到前驱体溶液,所述四水合乙酸锰、四水合乙酸钴、尿素和氟化铵按物质的量计,加入比例为1:2:5~10:1~5;
(2)将碳纤维布置于步骤(1)所配置的溶液中,充分搅拌;
(3)将步骤(2)得到的溶液及碳布转移到反应釜中,密闭,在120℃~180℃下反应6~12h,冷却至室温,用水和乙醇洗涤,干燥后得到粉色前驱体;
(4)将步骤(3)所得产物放入含有九水合硫化钠水溶液的反应釜中,在120℃~180℃下反应6~9h,自然冷却至室温,洗净干燥后得到生长在碳纤维布上的黑色MnCo2S4。
2.如权利要求1所述生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,其特征在于,步骤(1)中所述四水合乙酸锰物质的量为1~5mol。
3.如权利要求1所述生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,其特征在于,步骤(1)中所述乙二醇和水的体积比为1:1。
4.如权利要求1所述生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,其特征在于,步骤(2)中所述碳纤维布尺寸为2×2cm2,清洗方法为:将碳纤维布依次放入丙酮,去离子水,无水乙醇中分别超声清洗10min。
5.如权利要求1所述生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,其特征在于,步骤(2)中所述九水合硫化钠水溶液的浓度为0.01~0.05M。
6.如权利要求1所述生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,其特征在于,步骤(3)和步骤(4)中所述反应釜为聚四氟乙烯内胆的不锈钢反应釜,填充度为60%~80%。
7.如权利要求1所述生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法,其特征在于,步骤(3)和步骤(4)中所述干燥温度为60℃。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010650205.XA CN111905765A (zh) | 2020-07-08 | 2020-07-08 | 一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010650205.XA CN111905765A (zh) | 2020-07-08 | 2020-07-08 | 一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN111905765A true CN111905765A (zh) | 2020-11-10 |
Family
ID=73226503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010650205.XA Pending CN111905765A (zh) | 2020-07-08 | 2020-07-08 | 一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111905765A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113832478A (zh) * | 2021-10-13 | 2021-12-24 | 北京理工大学 | 一种三维异质结构的大电流析氧反应电催化剂的制备方法 |
CN114790011A (zh) * | 2022-03-29 | 2022-07-26 | 电子科技大学 | 一种CoS2同质异构复合材料及其制备方法和应用 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106531456A (zh) * | 2016-11-11 | 2017-03-22 | 郑州大学 | 一种基于CuCo2S4的超级电容器材料及其制备和应用 |
WO2017091955A1 (en) * | 2015-11-30 | 2017-06-08 | South University Of Science And Technology Of China | Bifunctional electrocatalyst for water splitting and preparation method thereof |
CN107855128A (zh) * | 2017-12-08 | 2018-03-30 | 江汉大学 | 一种硫化钴锰电催化剂的制备方法及产物 |
CN109390162A (zh) * | 2018-09-17 | 2019-02-26 | 太原理工大学 | 一种具有优异电化学性能的锰钴硫化物/还原氧化石墨烯复合材料及制备方法 |
-
2020
- 2020-07-08 CN CN202010650205.XA patent/CN111905765A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017091955A1 (en) * | 2015-11-30 | 2017-06-08 | South University Of Science And Technology Of China | Bifunctional electrocatalyst for water splitting and preparation method thereof |
CN106531456A (zh) * | 2016-11-11 | 2017-03-22 | 郑州大学 | 一种基于CuCo2S4的超级电容器材料及其制备和应用 |
CN107855128A (zh) * | 2017-12-08 | 2018-03-30 | 江汉大学 | 一种硫化钴锰电催化剂的制备方法及产物 |
CN109390162A (zh) * | 2018-09-17 | 2019-02-26 | 太原理工大学 | 一种具有优异电化学性能的锰钴硫化物/还原氧化石墨烯复合材料及制备方法 |
Non-Patent Citations (2)
Title |
---|
ABDELNABY M.ELSHAHAWY,ET AL: "Controllable MnCo2S4 nanostructures for high performance hybrid supercapacitors", 《JOURNAL OF MATERIALS CHEMISTRY A》 * |
XUEYAN GAO,ET AL: "Zinc Cobalt Sulfide Microspheres as a High-Performance Electrode Material for Supercapacitors", 《CHEMISTRYSELECT》 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113832478A (zh) * | 2021-10-13 | 2021-12-24 | 北京理工大学 | 一种三维异质结构的大电流析氧反应电催化剂的制备方法 |
CN113832478B (zh) * | 2021-10-13 | 2022-06-03 | 北京理工大学 | 一种三维异质结构的大电流析氧反应电催化剂的制备方法 |
CN114790011A (zh) * | 2022-03-29 | 2022-07-26 | 电子科技大学 | 一种CoS2同质异构复合材料及其制备方法和应用 |
CN114790011B (zh) * | 2022-03-29 | 2023-04-07 | 电子科技大学 | 一种CoS2同质异构复合材料及其制备方法和应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107275105B (zh) | 超级电容器电极材料及其制备方法 | |
CN113235104B (zh) | 一种基于zif-67的镧掺杂氧化钴催化剂及其制备方法与应用 | |
CN110694665B (zh) | 一种锰、氮掺杂八硫九钴电催化剂的制备方法及其应用 | |
CN109954503A (zh) | 一种硒化镍和三元硒化镍铁复合电催化剂及制备方法和应用 | |
CN113832478B (zh) | 一种三维异质结构的大电流析氧反应电催化剂的制备方法 | |
CN109603840B (zh) | 分级多孔羟基氧化镍纳米管阵列及其制备方法和应用 | |
CN108479808A (zh) | 一种3D自组装花球状钒修饰的Ni3S2的合成方法 | |
CN112439430B (zh) | 一种表面掺杂修饰MoS2的CoS纳米线催化剂的制备方法和应用 | |
CN112708906A (zh) | 一种氮掺杂多孔碳包裹的镍钴双金属磷化物纳米棒阵列电极的制备方法 | |
CN109201083A (zh) | 一种纳米花状二硫化钒/羟基氧化钒双功能复合电催化剂及其制备方法 | |
CN111996543B (zh) | 一种钒掺杂的硒化镍异质结自支撑电极及其制备方法和应用 | |
CN113279005A (zh) | 钴掺杂MoS2/NiS2多孔异质结构材料制备方法及其应用于电催化析氢 | |
CN113832492A (zh) | 一种镍钴硫材料及制备方法和在电催化oer中的应用 | |
CN111905765A (zh) | 一种生长在碳纤维布上的MnCo2S4析氧反应电催化剂的制备方法 | |
CN110721749B (zh) | 金属有机骨架结构衍生碳复合物包覆的NiCo2S4纳米线阵列状电催化剂及其制备方法 | |
CN110841658A (zh) | 钴基硫化物纳米棒阵列的制备方法 | |
US11859294B2 (en) | W18O49/CoO/NF self-supporting electrocatalytic material and preparation method thereof | |
CN110629248A (zh) | 一种Fe掺杂Ni(OH)2/Ni-BDC电催化剂的制备方法 | |
CN110152692B (zh) | 三维钴酸镍@硒化钴(ii)纳米针阵列复合材料及其制备方法和应用 | |
CN110354870B (zh) | 一种高性能的银掺杂的硫化钴析氧催化剂的制备方法及其应用 | |
CN115125547A (zh) | Mo/Nb双掺杂Co中空介孔碳纳米盒催化剂的制备及应用 | |
CN111118564B (zh) | 一种镍-氧化镍超薄纳米片材料及其电沉积制备方法和应用 | |
CN112090432A (zh) | 一种铁掺杂硫化碲镍电催化剂及其制备方法 | |
CN110721687A (zh) | 一种自支撑多孔Fe2O3纳米棒阵列电催化剂及其制备方法 | |
CN115011997B (zh) | 一种自支撑中空糖葫芦状电催化剂及其制备方法和应用 |
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: 20201110 |