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27 results about "Dodecahedron" patented technology
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In geometry, a dodecahedron (Greek δωδεκάεδρον, from δώδεκα dōdeka "twelve" + ἕδρα hédra "base", "seat" or "face") is any polyhedron with twelve flat faces. The most familiar dodecahedron is the regular dodecahedron, which is a Platonic solid. There are also three regular star dodecahedra, which are constructed as stellations of the convex form. All of these have icosahedral symmetry, order 120.
3D puzzles with replaceable tiles
A logic cube with changeable tiles is presented. The tiles which can be fit on the logic cube, have indicia in well-defined positions and orientations such that the resulting solid is an exact but larger replica of the initial logic cube. The tiles are such that they can be easily fit or removed, and do not fall off with the movement of the logic cube. They also do not obstruct the functionality of the logic cube. Other geometric shapes such as tetrahedron and dodecahedron and sizes other than 3×3×3 may be used.
Owner:BHAVSAR HARSHAD
Bismuth-loaded nanometer particle dodecahedron Co-C / LDH composite electrode material, and preparation method and application thereof
This invention discloses a dodecahedral Co-C / LDH composite electrode material loaded with bismuth nanoparticles, its preparation method, and its application. The composite material has a dodecahedron formed by a Co-C amorphous carbon layer as the core, an outer NiCoAl-LDH layer, and a surface loaded with Bi nanoparticles, forming a unique three-dimensional core-shell structure. Co-C / NiCoAl-LDH@Bi is assembled as the anode and AC as the cathode. The Co-C / NiCoAl-LDH@Bi / / AC device improves the Cl... ‑ Storage capacity, electrochemical reaction kinetics, and long-term cycling stability expand the application boundaries of LDH materials in the field of high-performance CDI anodes, providing high-performance material support for the practical application of CDI technology in seawater desalination. It is expected to promote the development and implementation of low-cost, large-scale seawater desalination systems and has important industrial application prospects and environmental value.
Owner:JIANGSU UNIV OF SCI & TECH
Percussion instruments
In percussion instruments, this makes it possible to generate a wider variety of sounds during performance. [Solution] The percussion instrument 10 has 12 plate-like members 110[1]~110[10], 120, 130, each with a regular pentagonal shape, which are assembled at positions corresponding to each face of a regular dodecahedron. Of the 12 plate-like members 110[1]~110[10], 120, 130 that make up the percussion instrument 10, at least one plate-like member 130 is provided with an opening that penetrates in the thickness direction.
Owner:EDUCATIONAL FOUND DAIDO GAKUEN
Mental arithmetic learning tool
Owner:王银
Design method of layered porous structure of acetabular cup and acetabular cup
The application relates to a design method of a layered porous structure of an acetabular cup and the acetabular cup, and the method comprises the following steps: modeling a plurality of rhombohedrons, so that the pore diameter is 500-1200 mu m and the porosity is 60%-90%; generating a cubic array from the rhombohedrons, introducing a simulation calculation software, and performing compression finite element simulation on the cubic array to obtain the compression strength and the elastic modulus of the cubic array; selecting a cubic array meeting the human bone performance, arraying the rhombohedron with the largest pore diameter in the cubic array to obtain an outer porous coating area capable of accommodating the acetabular cup; selecting the rhombohedron with the largest porosity to obtain an inner porous coating area capable of accommodating the acetabular cup; and then performing a Boolean operation on the two array bodies and the outer porous coating area and the inner porous coating area of the acetabular cup respectively to obtain an intersection, so that the layered porous structure of the acetabular cup is finally obtained. The acetabular cup obtained by the method can provide stability after implantation.
Owner:ZHEJIANG UNIV HIGH-END EQUIP RES INST
Preparation method of high dielectric constant small line width yttrium iron garnet ferrite material
ActiveCN118145978BInorganic material magnetismInductances/transformers/magnets manufactureOctahedronDielectric loss
A method for preparing high dielectric constant, small linewidth yttrium iron garnet ferrite material belongs to the field of ferrite material preparation technology. This invention utilizes the dodecahedral Y-axis in the garnet structure... 3+ octahedral Fe 3+ Instead of using a traditional method, this invention employs a two-stage pre-calcination process and a three-stage ball milling process (low speed followed by high speed), requiring only three ball milling operations, one granulation operation, and one sintering operation to produce yttrium iron garnet ferrite materials. The two-stage pre-calcination process results in better powder activity, a higher degree of solid-state reaction completion during sintering, and superior material properties. The three-stage ball milling process, using a low-speed followed by a high-speed process, enhances the particle size uniformity of the milled powder. The resulting ferrite exhibits a high dielectric constant ε' > 20, a low ferromagnetic resonance linewidth ΔH ≤ 25Oe, and a low dielectric loss tanδ. ε <1×10 ‑4 .
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
Magnetic 3D-interlocking puzzle
1.1 is an exploded perspective view. 1.2 is another exploded perspective view. 1.3 is an exploded top view. 1.4 is an exploded front view. 1.5 is an exploded left side view. 1.6 is a perspective view of the completed puzzle. 1.7 is another perspective view of it. 1.8 is its top view. 1.9 is its front view. 1.10 is its left side view. 1.11 is a perspective view of a puzzle piece. 1.12 is another perspective view of it. 1.13 is its top view. 1.14 is its bottom view. 1.15 is its left side view. 1.16 is its right side view. 1.17 is its front view. 1.18 is its rear view. As shown in Figures 1.1-1.10, when the puzzle pieces are arranged correctly, they connect with magnets and form a hollow dodecahedron. The distinctive feature of this design lies in the shape of the puzzle game and puzzle pieces, as shown in the figures. Other diagrams of the puzzle shown in Figures 1.3-1.5 and 1.8-1.10 are omitted because they are identical or symmetrical to those in Figures 1.3-1.5 and 1.8-1.10. As shown in Figures 1.11-1.18, the puzzle consists of 12 identical pieces. Therefore, diagrams of individual pieces are omitted. The dashed lines in the diagrams indicate areas of the puzzle game and puzzle pieces that do not constitute part of the design for which registration is sought. 1.1) Exploded perspective view; 1.2) Exploded perspective view; 1.3) Exploded view; 1.4) Exploded view; 1.5) Exploded view; 1.6) Perspective view; 1.7) Perspective view; 1.8) Top view; 1.9) Front view; 1.10) Left side view; 1.11) Perspective view; 1.12) Perspective view; 1.13) Top view; 1.14) Bottom view; 1.15) Left side view; 1.16) Right side view; 1.17) Front view; 1.18) Rear view
Owner:DIMITRIOS KALLIVROUSSIS
An omnidirectional pressure measurement system and method
ActiveCN120651413BFluid pressure measurement using piezo-electric devicesSignal conditioningDodecahedron
This invention relates to the field of pressure testing technology and discloses an omnidirectional pressure measurement system and method. The omnidirectional pressure measurement system includes a spherical piezoelectric sensor array module, a signal conditioning module, a signal storage and transmission module, and a host computer. The spherical piezoelectric sensor array module collects pressure signals in space, processes them through the signal conditioning module, and transmits them to the host computer via the storage and transmission module. The host computer calculates the pressure field intensity and pressure source location at each point and reconstructs the pressure field using the data. This invention employs a spherical array design with a dodecahedral vertex topology, enabling the system to achieve multi-angle information acquisition and depth perception, eliminating detection blind spots. This invention constructs a weighting function in a spherical coordinate system, calculates the pressure intensity at each point in space using a weighted average, estimates the initial position of the pressure source by squaring the measured value, and combines iterative algorithms for precise positioning. This invention not only improves measurement accuracy and efficiency but also enables the reconstruction of dynamic pressure fields.
Owner:ZHONGBEI UNIV
ZnNiCo-LDH with hollow nanocage structure and preparation method and application thereof
The application discloses a ZnNiCo-LDH with a hollow nanometer cage structure, and a ZIF-67 with a regular dodecahedron structure is synthesized by taking cobalt nitrate and 2-methyl imidazole as raw materials; a ZIF-67@NiCo-LDH with a core-shell structure is prepared by ZIF-67 and Ni(NO3)2.6H2O; and the ZnNiCo-LDH with the hollow nanometer cage structure can be obtained by the reaction of zinc chloride and the ZIF-67@NiCo-LDH. The preparation method comprises the following steps: 1, preparation of the ZIF-67 with the regular dodecahedron structure; 2, preparation of the ZIF-67@NiCo-LDH with the core-shell structure; and 3, preparation of the ZnNiCo-LDH with the hollow nanometer cage structure. As the application of the super capacitor, the specific capacitance is 1900-2000 F / g when charging and discharging in the range of 0-0.5 V and the discharge current density is 1 A / g; and the capacitance retention rate reaches 73% at 10 A / g relative to the capacitance at 1 A / g.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Wooden puzzle toy
The utility model discloses a wooden assembled wisdom toy, including wooden main part, card block and fixed component, the wooden main part is dodecahedron, and every surface of the wooden main part is all seted up recess, card block with recess is matched, and the side of card block is equipped with chamfer, and fixed component is installed in one side of card block, and the card of card block fixed is set in the inside of recess, the utility model discloses through the additional wooden main part, card block and fixed component, can realize the dismounting between card block and wooden main part, and increase the stability that card block assembled placed, and the toy can exercise the dexterity, observation and the cognitive ability to shape of children when playing, and exercise the carefulness and patience of children in the process of playing, can effectively improve the fun of children playing.
Owner:ZHEJIANG SHUANGJIA ARTS & CRAFTS CO LTD
ZIF-67 derived hollow material and room-temperature boronizing and vulcanizing two-step preparation method thereof
The invention discloses a ZIF-67 derivative hollow material and a room-temperature boronizing and vulcanizing two-step preparation method thereof. The preparation method comprises the following steps: firstly, synthesizing rhombic dodecahedron ZIF-67 by adopting a room temperature precipitation method, and then in-situ growing CoNi-LDH nanosheets on the surface of the rhombic dodecahedron ZIF-67 by introducing Ni < 2 + > to form a core-shell structure precursor; then boronizing treatment and sulfidizing treatment are sequentially carried out at the room temperature, wherein the boronizing treatment realizes partial selective etching of the material, and a core-shell / hollow coexisting structure is formed; and the sulfuration treatment further completes structure transformation and surface refinement, and finally a complete hollow structure with an ultrafine nanosheet surface is obtained. According to the application of the material as a supercapacitor electrode material, the material is charged and discharged within the range of 0-0.5 V, and when the discharge current density is 1 A g <-1 >, the specific capacitance is 1550-1620 F g <-1 >; and compared with 1 A g <-1 >, the specific capacitance retention rate is 70-80% under the current density of 10 A g <-1 >.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Preparation method and application of a super-elastic metal metamaterial
ActiveCN116571759BAdditive manufacturing apparatusPharmaceutical delivery mechanismMetallic materialsDodecahedron
This invention discloses a method for preparing and applying a hyperelastic metallic metamaterial. The preparation method includes: selecting a bending metamaterial based on the Maxwell equation, which is: m = b - 3j + 6, where b and j are the number of rods and nodes, respectively, and the material is a bending metamaterial when m is less than 0; selecting a matrix material and preparing the hyperelastic metallic metamaterial using laser powder bed melting 3D printing. In particular, the bending metamaterial can be selected from body-centered cubic metamaterials, face-centered cubic metamaterials, or orthogonal dodecahedral metamaterials. The elastic strain of the hyperelastic metallic metamaterial in this invention is about 10 times that of existing commercial metallic materials, an improvement of nearly an order of magnitude, and has important application value in the field of engineering materials such as artificial bone energy absorbers in medical devices.
Owner:SHANGHAI JIAOTONG UNIV +1
Novel diamond-arranged filler for improving mass transfer of absorption tower
PendingCN122006423ADispersed particle separationChemical/physical/physico-chemical processesCo2 absorptionDodecahedron
The invention relates to the technical field of carbon dioxide absorption fillers, in particular to a diamond-arranged novel filler for improving mass transfer of an absorption tower, the diamond-arranged novel filler comprises a plurality of filler units, each filler unit is arranged to be a hollow prismatic dodecahedron, and each surface of each filler unit is provided with a hexagonal microgroove; the filler units are arranged side by side to form a filler layer, the filler layer is provided with a plurality of layers of diamond-arranged filler bodies, and the plurality of filler layers are arranged in a staggered and stacked manner. By changing the filler structure, a stable three-dimensional structure is formed, and the mass transfer efficiency is improved; when a gas phase and a liquid phase flow through the diamond arrangement filler body, local vortexes are generated at the corner angles of each filler unit, and interface updating can be enhanced.
Owner:HUANENG CLEAN ENERGY RES INST +1
dice (regular dodecahedron)
1. Name of the designed product: dice (regular dodecahedron). 2. Use of the designed product: dice for games. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.
Owner:WENZHOU JINYAN ARTS & CRAFTS CO LTD
Quasi-polyhedron omnidirectional radar wave scattering regulation and control structure and construction method
The invention relates to a quasi-polyhedron omnidirectional radar wave scattering regulation and control structure and a construction method, belongs to the technical field of radar wave scattering regulation and control structures, and solves the problem that in the prior art, scattering sectional area and angle domain characteristics are difficult to balance. The construction method comprises the steps that an octahedron corner reflector frame is established, four corner reflectors are arranged on each surface of an octahedron, each surface is translated in the direction away from the center point, three non-center corner reflectors in each surface rotate by an angle alpha around the edge of the center corner reflector in the center direction of the octahedron, and the angle alpha is larger than the angle alpha. The edges of the eight surfaces are interconnected. According to the invention, the quasi-32-surface shape is adopted, the right-angle three-surface corner reflectors are arranged on the 32 opening surfaces of the 32-surface body, the space angle domain stable distribution characteristic and the radar scattering cross section intensity of the corner reflectors are well balanced, the backward / single-station radar scattering cross section of the corner reflector combination is uniformly distributed in the angle domain, and the radar scattering cross section intensity is improved. The structure is an ideal radar wave scattering structure.
Owner:BEIJING INST OF TECH
Regular dodecahedron deployable enveloping mechanism based on seven-rod single-ring mechanism
The invention discloses a regular dodecahedron deployable enveloping mechanism based on a seven-rod single-ring mechanism, which belongs to the technical field of mechanism application and comprises a type I rack, a type II rack, a type I connecting rod, a type II connecting rod, a type III connecting rod, a type I bias connecting rod, a type II bias connecting rod, a type III bias connecting rod and a type IV bias connecting rod. Each branch chain of the deployable mechanism comprises three seven-rod single-ring mechanisms, the single-ring mechanisms are connected through I-type offset rods, II-type offset rods and III-type offset rods, and the corresponding seven-rod single-ring rod pieces have the same motion relation. The extensible mechanism can be driven through the rack rod, conversion between a completely-unfolded state and a completely-closed state is achieved, and control is convenient.
Owner:BEIJING UNIV OF TECH
Pyridine nitrogen-doped regular dodecahedron supported transition metal catalyst as well as preparation method and application thereof
The invention belongs to the technical field of electrocatalytic oxygen reduction reaction, and particularly relates to a pyridine nitrogen-doped regular dodecahedron supported transition metal catalyst as well as a preparation method and application thereof. Soluble transition metal salt and an organic ligand are used as raw materials and are mixed and coordinated in a solvent system to obtain a pyridine nitrogen-doped N-C skeleton precursor; and calcining in a nitrogen atmosphere to obtain the pyridine nitrogen doped regular dodecahedron loaded transition metal catalyst. The oxygen reduction performance of the transition metal catalyst is improved by increasing the content of pyridine nitrogen, metal agglomeration is effectively prevented, meanwhile, pyridine nitrogen can effectively adjust the electron cloud density of center metal, adsorption of an active center to O2 is improved, and then the intrinsic activity of an electrocatalytic oxygen reduction reaction is improved. The preparation method is simple, the raw material source is wide, the preparation cost is low, the catalyst activity is high, the performance is only attenuated by 4.1% when the stability CA of the oxygen reduction reaction is tested for 40 hours, and the activity is still maintained by 95.9%.
Owner:HEILONGJIANG UNIV
Modulus-controllable bionic gradient porous medical titanium alloy and additive manufacturing process method thereof
PendingCN121820697AAdditive manufacturing apparatusIncreasing energy efficiencyDodecahedronRhombic dodecahedron
The invention discloses a modulus-controllable bionic gradient porous medical titanium alloy and an additive manufacturing process method thereof, and relates to the technical field of medical materials.The titanium alloy is formed by stacking a plurality of rhombic dodecahedron structures in the vertical direction; the rhombic dodecahedron structure is formed by stacking a plurality of rhombic dodecahedron structure layers with the same area, and each rhombic dodecahedron structure layer is formed by arranging a plurality of rhombic dodecahedron unit cell structures in an array mode in the same horizontal plane. And the top distances of the rhombic dodecahedron unit cell structures in the rhombic dodecahedron structures from top to bottom are sequentially increased. The elastic modulus can be effectively reduced to 0.14-0.43 GPa, the elastic modulus of the whole structure can be accurately controlled, and the stress shielding effect of the bone graft is relieved.
Owner:SUZHOU UNIV
A machining process of a dodecahedron head bolt
The application discloses a machining process of a dodecahedron head bolt, which comprises five core steps of blank pretreatment and copper plating lubrication, high-frequency induction rapid heating, rapid hot upsetting forming and quenching, direct aging heat treatment and thread warm rolling machining in sequence, and is particularly suitable for preparation of a GH6159 high-temperature alloy dodecahedron head bolt. The application solves the problem of adhesion of a hot upsetting die through copper plating lubrication, adopts a high-frequency induction 6-7s rapid heating + ≤4s extremely rapid hot upsetting + normal temperature water cooling quenching process to inhibit grain coarsening, and stably controls the grain size at 5-6 levels. The traditional solid solution + aging process is abandoned, and a 660 DEG C + or - 5 DEG C * 20h direct aging treatment is adopted, so that the tensile strength of the bolt breaks through 1800MPa. The 600 DEG C-610 DEG C preheating stable rolling + rolling oil cooling process fundamentally solves the problems of thread folding and broken tooth. The process has strong coherence and high operability, the prepared bolt meets the use requirements of aerospace and high-end equipment under high-temperature severe working conditions, and is suitable for industrialized batch production.
Owner:GUIZHOU JINGLI HANGTAI TECH
Water-saving device suitable for greening irrigation
The utility model relates to a water-saving device suitable for greening irrigation, which comprises a ground inserting type water spraying piece and a ground cage networking piece formed by splicing a plurality of ground cages, the ground inserting type water spraying piece is fixed at the geometric center of the ground cage network piece; the ground cage is a regular polyhedron and is at least a regular dodecahedron; at least one face of the ground cage is open, and at least one condensation piece is arranged in the opening. The condensation sheet is fixedly connected with the inner edge of the opening through a plurality of connecting sheets, and the plurality of connecting sheets are arranged in a manner that projections of adjacent parts are overlapped; and a water storage piece is arranged in the ground cage. The structure is simple, implementation is easy, water evaporation and waste can be effectively slowed down, and water and humidity can be kept to the maximum extent.
Owner:门妮
Method for preparing spherical-like superlattice microcavity from self-assembled rhombic dodecahedron perovskite nanocrystals
A method for preparing self-assembled spherical superlattice microcavity from synthetic rhombic dodecahedron nanocrystals, the method comprises the following steps: prolonging annealing time through hot injection method to obtain rhombic dodecahedron CsPbBr3 nanocrystals with good monodispersity, dispersing the nanocrystals in toluene solution after centrifugal separation and purification, dropping appropriate diluted nanocrystal solution on a substrate, slowly evaporating at low temperature, and self-assembling the rhombic dodecahedron nanocrystals in the solution into superlattice with regular morphology structure under the interaction between ligands and ligands and between solvent and ligands. The size of the self-assembled superlattice structure is approximately several hundred nanometers to several microns. The regular rhombic dodecahedron nanocrystals have good application prospect in the field of photocatalysis and display due to their weak size limitation effect and multi-faceted nature; meanwhile, the spherical superlattice has a high packing factor due to the close packing of its structure, and can form a microcavity as an optical feedback surface in combination with the regular geometric morphology of the self-assembled superlattice structure.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Fe-n-c cathode oxygen reduction catalyst based on fe supramolecule and preparation method thereof
The disclosure provides a preparation method of an Fe-N-C cathode oxygen reduction catalyst based on Fe supermolecule, comprising: performing first pyrolysis on ZIF-8 in a protective atmosphere to obtain a carbon-nitrogen base, wherein the carbon-nitrogen base has a positive dodecahedron framework structure; under the condition of stirring, adding a mixed solution to a melamine solution to obtain an iron supermolecule precursor, the mixed solution comprising cyanuric acid, iron ions and oxalate ions; ultrasonic dispersing the iron supermolecule precursor and the carbon-nitrogen base in water to obtain a catalyst precursor, and performing second pyrolysis on the catalyst precursor to obtain the Fe-N-C cathode oxygen reduction catalyst. The disclosure further provides the Fe-N-C cathode oxygen reduction catalyst obtained based on the foregoing preparation method and application thereof.
Owner:UNIV OF SCI & TECH OF CHINA
Method for reducing magnetic anisotropy of garnet film
PendingCN121874909APolycrystalline material growthLiquid-phase epitaxial-layer growthSuperexchangeRare earth ions
The invention discloses a method for reducing magnetic anisotropy of a garnet film, and belongs to the technical field of liquid phase epitaxial single crystal preparation. Pr ions are doped as light rare earth ions, and 4f electron cloud spatial distribution of the Pr ions is remarkably different from that of main group ions Bi < + >. When Pr < + > partially substitutes Tb < 3 + > on dodecahedron, the magnetocrystalline anisotropy constant introduced by Pr < + > is small, and symbols may be different. The substitution directly dilutes and counteracts a strong anisotropy field brought by original ions, and the net magnetocrystalline anisotropy constant is reduced from the physical source. Ga ions are doped, and Fe < + > on a tetrahedron can be preferentially replaced due to nonmagnetism of the Ga ions; the replacement directly dilutes and weakens the key Fe < + >-O-Fe < + > super-exchange effect, so that the saturation magnetization of the material is remarkably reduced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
High-entropy multi-principal-element rare earth aluminate material and preparation method thereof
The invention relates to a high-entropy multi-principal-element rare earth aluminate material. The chemical formula of the high-entropy multi-principal-element rare earth aluminate material is (A1 < x > A < 2 > < y > A < 3 > < z > A < 4 > A < 5 > < v >) < 3 > Al < 5 > O < 12 >, a1, A2, A3, A4 and A5 are any five rare earth ions of Y, La, Ce, Gd, Nd, Pr, Sm, Ho, Er, Yb and Lu, and A3, A4 and A5 are any five rare earth ions of Y, La, Ce, Gd, Nd, Pr, Sm, Ho, Er, Yb and Lu. A site in the garnet structure is randomly occupied by five rare earth ions, the rare earth ions are located in the center of a dodecahedron, and the rare earth ions are located in a deformed cube formed by eight oxygen; al < 3 + > is located at the B site of the octahedron and the tetrahedron to form [AlO6-] octahedron and [AlO4-] tetrahedron frameworks. Meanwhile, the invention also discloses a preparation method of the material. The method is simple to operate and high in production efficiency, and the obtained material has both high-reflectivity visible light-near infrared band and atmospheric window, and can be applied to extreme scenes such as building energy conservation and aerospace thermal control.
Owner:LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
Environment-friendly nano-pesticide particles, and preparation method and application thereof
This invention discloses an environmentally friendly nanopesticide particle, its preparation method, and its application. The nanopesticide particle is a nanopesticide particle loaded with fluopyram, with a dodecahedral-like structure. The inner layer is a zinc metal-organic framework (ZIF-8), and the outermost layer is a polydopamine membrane (PDA). Fluopyram is not only loaded in the ZIF-8 channels but also present on the PDA membrane, with a particle size of 500-700 nm. The environmentally friendly nanopesticide particle of this invention can be used to prepare environmentally friendly nanopesticide formulations, reducing pesticide dosage, effectively controlling plant fungal diseases, while minimizing harm to non-target organisms (such as fish), thus mitigating the damage to the ecological environment caused by traditional pesticides. This provides technical support for the development of efficient, specific, and environmentally friendly nanopesticides that protect the ecological environment.
Owner:GUIZHOU UNIV
Dice
Owner:OBAKEKOZO CO LTD
Sulfur-doped iron fe-s-n-c cathode oxygen reduction catalyst and preparation method and application thereof
The application provides a Fe-S-N-C cathode oxygen reduction catalyst doped with sulfur and a preparation method and application thereof, and belongs to the field of catalysts and preparation technologies thereof. The preparation method comprises the following steps: mixing and pyrolyzing ZIF-8 with a framework structure of a regular dodecahedron and a nitrogen-containing ligand to form a nitrogen-coated nitrogen-carbon base, wherein the nitrogen-carbon base has a framework structure of a regular dodecahedron; and performing chemical vapor deposition on the precursor iron salt, the precursor sulfur salt and the nitrogen-coated nitrogen-carbon base to obtain the Fe-S-N-C cathode oxygen reduction catalyst doped with sulfur. The application reduces the electrons around the Fe active center, improves the interaction with oxygen compounds, promotes the four-electron transfer oxygen reduction process in subsequent application, reduces the dissolution of Fe, and improves the cycle stability of the catalyst.
Owner:UNIV OF SCI & TECH OF CHINA