CN106242585A - A kind of sub-titanium oxide spherical powder and preparation method thereof - Google Patents

A kind of sub-titanium oxide spherical powder and preparation method thereof Download PDF

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Publication number
CN106242585A
CN106242585A CN201610863695.5A CN201610863695A CN106242585A CN 106242585 A CN106242585 A CN 106242585A CN 201610863695 A CN201610863695 A CN 201610863695A CN 106242585 A CN106242585 A CN 106242585A
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powder
spheroidization
titanium oxide
sub
spherical powder
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刘颖
叶金文
王广瑞
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Sichuan University
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Sichuan University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62695—Granulation or pelletising
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63488—Polyethers, e.g. alkylphenol polyglycolether, polyethylene glycol [PEG], polyethylene oxide [PEO]

Abstract

The preparation method of sub-titanium oxide spherical powder, method one: by broken for Asia titanium oxide powder powdered of sieving, then the method for employing cylinder spheroidization is by powder spheroidization, and sieve to obtain the spherical powder of even particle size distribution；Method two: the sub-titanium oxide powder of 30 ~ 100 μm is placed in spheroidising in the radio frequency plasma spheroidization device of stable operation；Method three: weigh a certain amount of sub-titanium oxide powder, and it is added thereto to forming agent, by each raw material by ball mill mixing method mix homogeneously, taking-up obtains mixed slurry, use high speed centrifugation Spray Grain-make Drier that above-mentioned slurry is carried out mist projection granulating process, obtain the sub-titanium oxide spherical powder of even particle size distribution.

Description

A kind of sub-titanium oxide spherical powder and preparation method thereof
Technical field
The invention belongs to thermal spraying material, coating material, 3D printed material field, particularly relate to a kind of sub-titanium oxide ball Shape powder and preparation method thereof.
Background technology
Meet chemical general formula TinO2n-1Sub-titanium oxide have uniqueness physics, chemistry and chemical property, including excellence Electric conductivity, monocrystalline Ti4O7Conductivity can reach 1500S/cm, although actual preparation Ti4O7It is polycrystalline material, electric conductivity Monocrystalline conductivity can not be reached, but be because its conductivity and be better than graphite, electrode material and conductivity ceramics can be met completely The application of material；Good chemical stability, resistance to acids and bases；Wide electrochemically stable potential window, steady potential in aqueous solution Window is at more than 3.0V.Field of metallurgy, field of electroplating have and should have prospect widely.
The method of the sub-titanium oxide of at present preparation, mainly reduces TiO under the high temperature conditions by reductant2Prepare, The granule prepared is many more than several microns, and particle size distribution range is big, and pattern is uneven, in thermal spray process, there is spray It is coated with the problems such as material and matrix associativity poor, powder poor fluidity, in the duct transport difficult.These problems will cause coating Degradation, thus coating material cracking, the generation of the phenomenon such as come off during causing workpiece to use, affect the use of product.
Due to feature that ceramic material is hard and crisp, to make it shape particularly difficult, and particularly complicated ceramic member need to pass through mould Tool carrys out molding, and mould has that processing cost is high, the construction cycle is long, it is difficult to meet the demand that product is constantly updated.3D prints conduct A kind of rapid shaping technique, can solve prior powder metallurgy and be difficult to integrated problem, but the raw material of prior powder metallurgy, Owing to particle size, pattern are uneven, being extremely difficult to the requirement to raw material of the 3D printing technique, 3D prints higher to ingredient requirement, Including the pattern of powder, particle diameter, particle size distribution, specific surface area, mobility, apparent density etc., typically require uniform spherical powder End, to ensure uniform dispersion, good mobility, and existing frequently-used powder spheroidization method (such as air-flow spheroidization etc.) Relatively costly, commercial applications is limited by bigger.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of sub-titanium oxide spherical powder and preparation side thereof Method, effectively raises the performance of coating, and the adhesion between coating and matrix.For printing simultaneously for 3D, well Solve formability and the problem of porosity in Rapid Prototyping Process.
Sub-titanium oxide of the present invention is Ti3O5Spherical powder, Ti4O7Spherical powder, Ti5O9Spherical powder, Ti6O11Spherical Powder, Ti7O13Spherical powder, Ti8O15Spherical powder opisthosoma or Ti9O17Spherical powder.
The preparation method of described sub-titanium oxide spherical powder comprises:
Employing method 1: by broken for Asia titanium oxide powder powdered of sieving, described in sieve number of sieving be 300～600 mesh； Powder after sizing adds forming agent, and mix homogeneously.Then the method for employing cylinder spheroidization is by powder spheroidization, and Sieve with the screen cloth of 30～100 mesh, take the powder by screen cloth；Sieve with the screen cloth of 50～120 mesh again, take not by sieve The powder of net, i.e. obtains the spherical powder of even particle size distribution；
Described spheroidization process, is to use cylinder spheroidization, and cylinder wall is double-layer structure, hollow, and hollow space can Being passed through circulation water, water temperature controls at 50～80 DEG C, and drum rotation speed is 15～45r/min, and the spheroidization time is 10～20min.
Or employing method 2:
The sub-titanium oxide powder of 30～100 μm is placed in nodularization in the radio frequency plasma spheroidization device of stable operation, runs Power is 30～100KW, and argon working flow is 15～40slpm, and argon shield flow is 100～200slpm, system negative pressure Being 2～8slpm for 0.1-0.5atm powder feeding gas flow, powder feed rate is 20～60g/min.
Or employing method 3:
Weigh a certain amount of sub-titanium oxide powder, and be added thereto to forming agent, each raw material is mixed by ball mill mixing method Close uniformly, take out and obtain mixed slurry, use high speed centrifugation Spray Grain-make Drier that above-mentioned slurry is carried out mist projection granulating process, Described atomizing granulating technology is: the flow of slurry by constant flow pump control, constant flow pump in the range of 10～100g/min, nebulizer Rotating speed is set to 10～25kr/min, inlet temperature between 100～400 DEG C, wind exhausting outlet temperature between 80 DEG C～200 DEG C, Wind exhausting outlet temperature to guarantee stable, consistent to ensure the water content of powder, i.e. available required sample.
In above-mentioned preparation method, described forming agent is wherein in Polyethylene Glycol, paraffin, buna and SD glue Kind.
In above-mentioned preparation method, the amount of the forming agent of interpolation is the 0.5～5% of material powder gross mass.
Radio frequency plasma nodularization process described in method two, the temperature of radio frequency plasma nodularization plasma is 2000 More than DEG C.
Compared with prior art, the method have the advantages that
1, the spherical powder prepared by the present invention, has good mobility and high tap density, makes institute in thermal spraying The coating prepared evenly, fine and close, coating has more preferable wearability.In field of powder metallurgy, spherical powder is used to prepare Blank density is high, and in sintering process, base substrate shrinks uniformly, thus the goods precision obtained is high, performance is good.
2, for as 3D printed material, the present invention solves sub-titania meterial under conditions of 3D prints rapid shaping The high shortcoming with poor mechanical property of porosity.
3, the method for the invention technique is simple, low for equipment requirements.It is important that for the spherical powder of ceramic material Preparation for, cost of the present invention is substantially reduced, and is more suitable for industrialized production.
Detailed description of the invention
By the following examples sub-titanium oxide spherical powder of the present invention and preparation method thereof is described further.
Embodiment 1
By a certain amount of Ti3O5The broken powdered of sieving of powder, described in sieve number of sieving be 300 mesh, powder after sizing Material adds the Polyethylene Glycol of 5%, and mix homogeneously.Then use the method for cylinder spheroidization by powder spheroidization: at cylinder Wall two-layer hollow space is passed through circulation water, and water temperature controls at 80 DEG C, and drum rotation speed is 15r/min, and the spheroidization time is 20min, Powder after the spheroidization screen cloth of 30 mesh sieves, and takes the powder by screen cloth；Sieve with the screen cloth of 50 mesh again, take and do not lead to The powder of the screen cloth crossed, i.e. obtains the Ti of even particle size distribution3O5Spherical powder.
Embodiment 2
By a certain amount of Ti4O7The broken powdered of sieving of powder, described in sieve number of sieving be 400 mesh, powder after sizing Material adds the Polyethylene Glycol of 2%, and mix homogeneously.Then use the method for cylinder spheroidization by powder spheroidization: at cylinder Wall two-layer hollow space is passed through circulation water, and water temperature controls at 60 DEG C, and drum rotation speed is 30r/min, and the spheroidization time is 15min, Powder after the spheroidization screen cloth of 45 mesh sieves, and takes the powder by screen cloth；Sieve with the screen cloth of 100 mesh again, take not The powder of the screen cloth passed through, i.e. obtains the Ti of even particle size distribution4O7Spherical powder.
Embodiment 3
By a certain amount of Ti5O9The broken powdered of sieving of powder, described in sieve number of sieving be 600 mesh, powder after sizing Material adds the Polyethylene Glycol of 0.5%, and mix homogeneously.Then use the method for cylinder spheroidization by powder spheroidization: in rolling Barrel two-layer hollow space is passed through circulation water, and water temperature controls at 50 DEG C, and drum rotation speed is 45r/min, and the spheroidization time is 10min, the screen cloth of 100 mesh of the powder after spheroidization sieves, and takes the powder by screen cloth；Sieve with the screen cloth of 120 mesh again, Take the powder of unsanctioned screen cloth, i.e. obtain the Ti of even particle size distribution5O9Spherical powder.
Embodiment 4
By a certain amount of Ti6O11Powder is placed in the radio frequency plasma spheroidization device of stable operation, radio frequency plasma nodularization Technological parameter is: power is 60KW, argon working flow be argon working flow be 30slpm, argon shield flow is 150slpm, system negative pressure is 0.3atm, and powder feeding gas flow is 6slpm, and powder feed rate is 40g/min, in radio frequency plasma nodularization The temperature of plasma is 2100 DEG C.
Embodiment 5
By a certain amount of Ti7O13Powder is placed in the radio frequency plasma spheroidization device of stable operation, radio frequency plasma nodularization Technological parameter is: power is 30KW, argon working flow be argon working flow be 15slpm, argon shield flow is 100slpm, system negative pressure is 0.5atm, and powder feeding gas flow is 2slpm, and powder feed rate is 60g/min, in radio frequency plasma nodularization The temperature of plasma is 2000 DEG C.
Embodiment 6
By a certain amount of Ti3O5Powder is placed in the radio frequency plasma spheroidization device of stable operation, radio frequency plasma nodularization work Skill parameter is: power is 100KW, argon working flow be argon working flow be 40slpm, argon shield flow is 200slpm, system negative pressure is 0.1atm, and powder feeding gas flow is 8slpm, and powder feed rate is 20g/min, in radio frequency plasma nodularization The temperature of plasma is 2300 DEG C.
Embodiment 7
Weigh a certain amount of Ti8O15Powder, and it is added thereto to the SD glue of 2%, each raw material is mixed by ball mill mixing method Close uniformly, take out and obtain mixed slurry, use high speed centrifugation Spray Grain-make Drier that above-mentioned slurry is carried out mist projection granulating process, Described atomizing granulating technology is: slurry flow is 70g/min, and nebulizer rotating speed is 15kr/min, inlet temperature at 200 DEG C, Exhaust outlet temperature, at 100 DEG C, i.e. obtains the Ti of even particle size distribution8O15Spherical powder.
Embodiment 8
Weigh a certain amount of Ti4O7Powder, and it is added thereto to the Polyethylene Glycol of 2%, by each raw material by ball mill mixing method Mix homogeneously, takes out and obtains mixed slurry, uses high speed centrifugation Spray Grain-make Drier to carry out above-mentioned slurry at mist projection granulating Reason, described atomizing granulating technology is: slurry flow is 70g/min, and nebulizer rotating speed is 15kr/min, and inlet temperature is 200 DEG C, exhaust outlet temperature, at 100 DEG C, i.e. obtains the Ti of even particle size distribution4O7Spherical powder.
Embodiment 9
Weigh a certain amount of Ti3O5Powder, and it is added thereto to the paraffin of 5%, each raw material is mixed by ball mill mixing method Uniformly, take out and obtain mixed slurry, use high speed centrifugation Spray Grain-make Drier that above-mentioned slurry carries out mist projection granulating process, institute The atomizing granulating technology stated is: slurry flow is 10g/min, and nebulizer rotating speed is 10kr/min, and inlet temperature, at 400 DEG C, is arranged Draught temperature, at 200 DEG C, i.e. obtains the Ti of even particle size distribution3O5Spherical powder.
Embodiment 10
Weigh a certain amount of Ti9O17Powder, and it is added thereto to the buna of 3%, each raw material is passed through ball mill mixing Method mix homogeneously, takes out and obtains mixed slurry, uses high speed centrifugation Spray Grain-make Drier that above-mentioned slurry is carried out mist projection granulating Processing, described atomizing granulating technology is: slurry flow is 100g/min, and nebulizer rotating speed is 25kr/min, and inlet temperature exists 100 DEG C, exhaust outlet temperature, at 80 DEG C, i.e. obtains the Ti of even particle size distribution9O17Spherical powder.

Claims (5)

1. sub-titanium oxide spherical powder and preparation method thereof, it is characterised in that described sub-titanium oxide is Ti3O5Spherical powder, Ti4O7Spherical powder, Ti5O9Spherical powder, Ti6O11Spherical powder, Ti7O13Spherical powder, Ti8O15Spherical powder opisthosoma or Ti9O17 Spherical powder.
The preparation method of described sub-titanium oxide spherical powder comprises:
Employing method 1:
By broken for Asia titanium oxide powder powdered of sieving, described in sieve number of sieving be 300～600 mesh；Powder after sizing Middle addition forming agent, and mix homogeneously.Then use the method for cylinder spheroidization by powder spheroidization, and by 30～100 purposes Screen cloth sieves, and takes the powder by screen cloth；Sieve with the screen cloth of 50～120 mesh again, take not by the powder of screen cloth, to obtain final product Spherical powder to even particle size distribution；
Described spheroidization process, is to use cylinder spheroidization, and cylinder wall is double-layer structure, hollow, and hollow space can be passed through Circulation water, water temperature controls at 50～80 DEG C, and drum rotation speed is 15～45r/min, and the spheroidization time is 10～20min.
Or employing method 2:
The sub-titanium oxide powder of 30～100 μm is placed in nodularization in the radio frequency plasma spheroidization device of stable operation, runs power Being 30～100KW, argon working flow is 15～40slpm, and argon shield flow is 100～200slpm, and system negative pressure is 0.1-0.5atm powder feeding gas flow is 2～8slpm, and powder feed rate is 20～60g/min.
Or employing method 3:
Weigh a certain amount of sub-titanium oxide powder, and be added thereto to forming agent, by each raw material by the mixing of ball mill mixing method all Even, take out and obtain mixed slurry, use high speed centrifugation Spray Grain-make Drier that above-mentioned slurry is carried out mist projection granulating process, described Atomizing granulating technology be: the flow of slurry by constant flow pump control, constant flow pump in the range of 10～100g/min, nebulizer rotating speed Be set to 10～25kr/min, inlet temperature between 100～400 DEG C, wind exhausting outlet temperature between 80 DEG C～200 DEG C, air draft Outlet temperature to guarantee stable, consistent to ensure the water content of powder, i.e. available required sample.
2. according to the forming agent described in claim 1, it is characterised in that it is Polyethylene Glycol, paraffin, buna and SD glue In one of which.
3. according to the first the spheroidization method described in method in claim 1 one, it is characterised in that use cylinder spheroidization, Cylinder wall is double-layer structure, hollow, and hollow space can be passed through circulation water, and water temperature controls at 50～80 DEG C, drum rotation speed be 15～ 45r/min, the spheroidization time is 10～30min.
4. by claim 1, the forming agent described in 2, it is characterised in that the amount of the forming agent of interpolation is material powder gross mass 0.5%～5%.
5. by the radio frequency plasma nodularization process described in method two in claim 1, radio frequency plasma nodularization plasma Temperature more than 2000 DEG C.
CN201610863695.5A 2016-09-29 2016-09-29 A kind of sub-titanium oxide spherical powder and preparation method thereof Pending CN106242585A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106337158A (en) * 2016-09-29 2017-01-18 四川大学 Spherical titanium black powder and preparation methods thereof
CN106735176A (en) * 2017-01-18 2017-05-31 成都锦钛精工科技有限公司 Sub- titanium oxide metal composite is spherical or spherical powder and preparation method thereof
CN106799258A (en) * 2017-01-16 2017-06-06 苏州斯宜特纺织新材料科技有限公司 A kind of method that chemical modification method prepares nanoscale Asia titanium oxide composite photo-catalyst
CN106976905A (en) * 2017-03-07 2017-07-25 中国科学院上海硅酸盐研究所 The sub- titanium oxide and its controllable method for preparing of core shell structure
CN107364865A (en) * 2017-07-04 2017-11-21 龙岩紫荆创新研究院 A kind of method for preparing micron order increasing material manufacturing spherical carbide titanium powder
CN108624835A (en) * 2017-03-21 2018-10-09 福吉米株式会社 Spraying plating slurry
CN110788338A (en) * 2019-11-27 2020-02-14 安徽省春谷3D打印智能装备产业技术研究院有限公司 Drum-type low-melting-point metal powder spheroidizing device and process
CN113003609A (en) * 2019-12-20 2021-06-22 中核北方核燃料元件有限公司 Plasma spheroidizing process of uranium dioxide particles
CN113149146A (en) * 2021-04-12 2021-07-23 东莞理工学院 Preparation of Ti by 3D technique4O7Method for preparing electrode and porous three-dimensional Ti4O7Electrode and use

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106337158A (en) * 2016-09-29 2017-01-18 四川大学 Spherical titanium black powder and preparation methods thereof
CN106799258B (en) * 2017-01-16 2019-06-04 苏州斯宜特纺织新材料科技有限公司 A kind of method that chemical modification method prepares nanoscale Asia titanium oxide composite photo-catalyst
CN106799258A (en) * 2017-01-16 2017-06-06 苏州斯宜特纺织新材料科技有限公司 A kind of method that chemical modification method prepares nanoscale Asia titanium oxide composite photo-catalyst
CN106735176A (en) * 2017-01-18 2017-05-31 成都锦钛精工科技有限公司 Sub- titanium oxide metal composite is spherical or spherical powder and preparation method thereof
CN106735176B (en) * 2017-01-18 2019-11-12 成都锦钛精工科技有限公司 Sub- titanium oxide-metal composite spherical shape or spherical powder and preparation method thereof
CN106976905A (en) * 2017-03-07 2017-07-25 中国科学院上海硅酸盐研究所 The sub- titanium oxide and its controllable method for preparing of core shell structure
CN106976905B (en) * 2017-03-07 2018-08-24 中国科学院上海硅酸盐研究所 The sub- titanium oxide and its controllable method for preparing of nucleocapsid
CN108624835A (en) * 2017-03-21 2018-10-09 福吉米株式会社 Spraying plating slurry
CN108624835B (en) * 2017-03-21 2021-10-01 福吉米株式会社 Slurry for thermal spraying
CN107364865A (en) * 2017-07-04 2017-11-21 龙岩紫荆创新研究院 A kind of method for preparing micron order increasing material manufacturing spherical carbide titanium powder
CN110788338A (en) * 2019-11-27 2020-02-14 安徽省春谷3D打印智能装备产业技术研究院有限公司 Drum-type low-melting-point metal powder spheroidizing device and process
CN113003609A (en) * 2019-12-20 2021-06-22 中核北方核燃料元件有限公司 Plasma spheroidizing process of uranium dioxide particles
CN113149146A (en) * 2021-04-12 2021-07-23 东莞理工学院 Preparation of Ti by 3D technique4O7Method for preparing electrode and porous three-dimensional Ti4O7Electrode and use
CN113149146B (en) * 2021-04-12 2022-04-01 东莞理工学院 Preparation of Ti by 3D technique4O7Method for preparing electrode and porous three-dimensional Ti4O7Electrode and use

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Application publication date: 20161221