337 results about "Octahedron" patented technology

The invention discloses a three-dimensional geologic model subdivision method based on an earth space grid structure, which adopts a plurality of types of earth space grid structures including longitude and latitude grids, octahedral projection grids and Hilbert curve filling grids to carry out three-dimensional division on the earth surface, and combines a layered recursive grid division technology to obtain a three-dimensional geologic model. Multi-level grid unit generation and geometric mapping from coarse resolution to high resolution are achieved, grid parameters are dynamically adjusted according to geologic features, large-size grids are adopted in a simple area to improve efficiency, small-size grids are adopted in a complex area to capture details, redundant units are eliminated in combination with a grid optimization algorithm, and the efficiency is improved. The accuracy and the calculation efficiency of the model are improved; a global unique identifier is generated through a GeoSOT-3D hierarchical recursion technology, union set, intersection and difference set operations of grid units are completed in combination with efficient Boolean operation, and the integrity and topological consistency of geologic model subdivision are ensured.

The invention discloses a solid electrolyte with high ionic conductivity, which comprises the following components: a matrix material: a halide super ion conductor with a LiMXCl4 structure, M being selected from at least one of Ta, Nb and Hf, X being O or F, a chemical general formula being LiM1-aX1-6Cl4, a being equal to 0.1-0.3, and an electrochemical window being regulated to 2.5-4.0 V through fluorine-chlorine mixed anion substitution; the second phase material is a core-shell structure compound, the core is Li3TiCl6, and the shell is a Li3PS4 interface layer; and the sintering aid is a compound of Li3BO3 and LiF. Through fluorine-chlorine mixed anion regulation and control and MO2Cl4 octahedron synergistic tilting mechanism, the ionic conductivity of the solid electrolyte is remarkably improved, the lithium ion conductivity at room temperature is greater than or equal to 10mS / cm, the activation energy is less than or equal to 0.2 eV and is superior to that of the traditional halide electrolyte, and meanwhile, the free volume between chains is optimized through Zr < 4 + > / Sn < 2 + > gradient doping, so that the performance of the solid electrolyte is improved. The core-shell structure compound and the silane coupling agent are combined for modification, so that the electrochemical window is effectively widened to 2.5-4.0 V, the interface side reaction is inhibited, and the composite material is adaptive to a high-voltage positive electrode material.

The invention discloses a preparation method and application of octahedral cuprous oxide containing defects, and belongs to the technical field of material preparation. In order to solve the problems that in existing cuprous oxide preparation, a defect structure is difficult to accurately regulate and control, and the crystal form uniformity is insufficient, the method comprises the steps that a copper source solution, a glucose solution, a sodium citrate solution and an ammonium fluoride solution with specific concentrations are mixed according to the volume ratio, the pH is adjusted to 10.5-11, then a hydrothermal reaction is conducted, and a target product is obtained through centrifugation, filtration, washing and drying. The method comprises the following specific steps: mixing solutions, reacting in a high-pressure reaction kettle at 140-165 DEG C for 4-6 hours, and realizing octahedral crystal form construction and defect regulation and control by controlling the raw material ratio and reaction conditions. The preparation method is simple in process and high in controllability, and the prepared octahedral cuprous oxide containing defects can serve as a catalyst to be applied to the fields of catalytic decomposition of ammonium perchlorate and the like and has good industrial application prospects.

The invention discloses an octahedral diamond synthesis method which comprises the following steps: preparing raw materials: selecting high-purity graphite powder and a powder catalyst, adding AlCl3 and KBH4 into the graphite powder to obtain graphite mixed powder, mixing the graphite mixed powder and the powder catalyst according to a weight ratio of (2-5): (5-8) to obtain mixed powder, adding a dispersing agent into the mixed powder, and uniformly mixing to obtain the raw materials, wherein the ratio of the dispersing agent to the mixed powder is 0.5: 6; the raw materials are put into a granulator to be granulated, and raw stone particles within 100 meshes are obtained; adding the raw stone particles into a mold, and pressing by adopting a four-column press to obtain a graphite core column; according to the method, in the diamond synthesis stage, the method of pressure subsection slow rising and power subsection slow rising is adopted, a good environment is provided for production of the octahedral diamond, the quality of the octahedral diamond is improved, the crystal form consistency is high, meanwhile, a high-position repeated mode is adopted in the pressure stage, and the performance of the diamond is improved.

A controllable rapid pressure loading technology for a large volume press is provided. A regular octahedra, plugs, diamond pistons, and a standard are included. The regular octahedra is provided with a cavity with openings at two ends of the cavity. The standard is placed in the cavity. The openings at two ends of the cavity are respectively blocked by the conductive plugs. The diamond piston is arranged between the standard and the plug. The diamond pistons arranged between the standard and the plug has high hardness and has the pressure transmission efficiency superior to that of a common ceramic plug, improving compression efficiency in sample cavity. A loading method of pre-charging a pressure to a pressure loading device first and then rapidly releasing to a pressure loading mold is used to match an improved pressure transmission component, which shortens the pressure loading time of the sample cavity.

The invention provides a perovskite surface low-dimensional structure regulation and control method based on a perovskite complex solvent additive and photovoltaic application, and the method comprises the steps: S1, adding the perovskite complex solvent additive into a conventional post-treatment solution 1, and obtaining a solution 2; and S2, treating the surface of the original perovskite thin film by using the solution 2 to realize controllable regulation and control of the low-dimensional structure on the surface of the perovskite thin film. The number of octahedral layers of the two-dimensional perovskite structure can be induced to be increased through a small amount of perovskite complex solvent additive in the post-treatment material solution, the n value can be controllably increased by increasing the adding amount of the perovskite complex solvent, the inhibition effect of the quantum well effect on carrier transport is weakened, and carrier transport is improved. The method can be used for optimizing the performance of the perovskite photovoltaic device.

The present invention discloses an abnormal thermal quenching near-infrared fluorescent ceramic and its preparation method and application. The chemical formula of the fluorescent ceramic is: (Lu 0.34+z Y 0.66‑y‑z Sc y )3(Sc 0.85‑x Al 0.15 Cr x )2Al3O 12 , 0.0005≤ x ≤0.02, x : y =1:(5‑10), x : z =1:(10‑20). y Sc 3+ The mole percentage of dodecahedral sites occupied, x Cr ions occupy the octahedron Sc 3+ The molar percentage of the lattice site. z is the Lu in the dodecahedron 3+ The molar percentage of the metering control. The ceramic green body is formed and sintered by using the acrylamide gel injection molding method combined with high temperature solid phase reaction. The luminescent center ion in the ceramic of the present invention presents a +3 valence state under the influence of the matrix microenvironment regulator (calcium carbonate, magnesium oxide and zirconium oxide, silicon dioxide, hafnium dioxide). The excitation peak of the ceramic is between 430nm-460nm, the half-height width is between 90nm-130nm, and the half-height width is between 150nm-160nm. o The luminous intensity at 200°C is 105%-165% of the room temperature. o The luminescence intensity at 400°C is 130%-200% of that at room temperature. When excited by a 430-460 nm excitation source, the emission wavelength ranges from 650 nm to 900 nm. The ceramic preparation process is simple, and the resulting anomalous thermally quenched near-infrared fluorescent ceramic is suitable for high-power near-infrared imaging and detection.

To provide a thermal conductor capable of forming a heat flow path between adjacent diamonds and hardly deforming another member when joined to the other member. [Solution] The heat conductor 100 of the present invention has a diamond-containing metal layer 20 including a plurality of diamonds 40 arranged in one layer and a metal 42 that fixes the diamonds 40, and the diamonds 40 are polyhedrons with octahedrons or more, do not protrude from the diamond-containing metal layer 20, and are in surface contact with adjacent diamonds 40. One surface 20S of the diamond-containing metal layer 20 is a smoothed surface. Also, the end 40B of the diamond 40 on the other surface 20B side of the diamond-containing metal layer 20 is a vertex or edge, or the other surface 20B of the diamond-containing metal layer 20 is a smoothed surface, and the end of the diamond 40 on the other surface 20B side before smoothing is a vertex or edge.

The invention belongs to the field of lithium batteries, and particularly relates to a preparation method of a modified lithium manganate positive electrode material, the modified lithium manganate positive electrode material is prepared by using one-time pre-sintering and two-time sintering, and the preparation method comprises the following steps: firstly, mixing lithium / manganese / N compounds, and carrying out one-time low-temperature calcination at 500-700 DEG C to prepare a precursor; the preparation method comprises the following steps: preparing a precursor, doping a T compound into the precursor, sintering for the first time, annealing at 600-750 DEG C to obtain a modified lithium manganate material, and finally sintering and coating an F compound for the second time to obtain a coated lithium manganate material finished product. According to the preparation method disclosed by the invention, the problem of Mn (III) dissolution of an octahedral spinel morphology material is solved, and the probability that the crystal face activity of a truncated spinel morphology material is too large, so that the truncated spinel morphology material is easily subjected to side reaction with an electrolyte to cause excessive gas production can be reduced; the preparation method disclosed by the invention is simple and is carried out in an air atmosphere, only a muffle furnace is used as heating equipment, the cost is low, the flow time is short, and industrial production is easy.

The invention discloses ceramic slurry for a lithium ion battery, a ceramic diaphragm and the lithium ion battery. The ceramic slurry comprises the following components in parts by mass: 12-58.8 parts of cordierite ceramic powder, 0.1-10 parts of an adhesive, 0.1-5 parts of a dispersing agent, 0.01-2 parts of a thickening agent and 40-80 parts of water. The ceramic diaphragm comprises ceramic slurry. According to the invention, cordierite ceramic powder is used as a main raw material and has a layered crystal structure and a hexagonal crystal structure, the crystal of the cordierite ceramic powder contains tetrahedral and octahedral units of magnesium, aluminum and silicon, a complex three-dimensional network is formed, ions, especially lithium ions and sodium ions, can freely move in crystal lattices of the cordierite ceramic powder, the migration energy barrier is low, and the performance of the cordierite ceramic powder is improved. The cordierite ceramic powder disclosed by the invention has relatively high ionic conductivity and lower relative density, and the energy density of a high-rate battery is obviously improved when the cordierite ceramic powder is used for the high-rate battery.

The invention relates to the technical field of robots, and particularly discloses a bionic humanoid mechanical arm which comprises a shoulder joint module, a big arm module, an elbow joint module, a small arm module and a wrist joint module which are connected in sequence. The wrist joint module realizes two-degree-of-freedom flexible movement through a regular octahedron tensegrity structure, and the rotation centers of the wrist joint module naturally intersect at one point and are connected with the rolling shaft in series to form three-degree-of-freedom concurrent rotation; the length-adjustable supporting rod in the flexible structure changes the joint rigidity in real time and dynamically adapts to the load change so as to enhance the man-machine interaction safety; an elbow joint adopts a virtual pitch circle rolling mechanism, all joint-crossing driving rope paths are forced to remain unchanged, and multi-joint motion coupling is eliminated from the mechanical intrinsic level; a driving motor and a rope wheel system are arranged on the large arm module in a centralized mode, the rope tensioning state is continuously optimized in cooperation with a ratchet wheel type self-locking tension mechanism, and the tail end inertia is reduced under the condition that an elbow and wrist joint motor is completely removed.

To provide a thermal conductor capable of forming a heat flow path between adjacent diamonds. [Solution] A thermal conductor 100 of the present invention has a diamond-containing metal layer 20 containing a plurality of diamonds 40 arranged in one layer and a metal 42 that fixes the diamonds 40. The diamonds 40 are polyhedrons with octahedrons or more, and adjacent diamonds 40 are in face-to-face contact with each other, and the diamonds 40 are arranged so that an end 40B of each diamond 40 on one face 20B of the diamond-containing metal layer 20 forms an apex or edge.

The invention relates to a preparation method of a perovskite solar cell with an oriented interface modification layer, and the method comprises the steps: employing IPA and DMF as solvents during the preparation of a two-dimensional perovskite precursor solution, adding a solvent with a high Gutman donor number into the two-dimensional perovskite precursor solution, and enabling the two-dimensional perovskite precursor solution to be composed of one or more than two of isopropanol, DMF, DMSO, DMPO and DMPU. The solvents not only have high solubility and permeability, can effectively introduce a two-dimensional ligand into the three-dimensional perovskite thin film, but also can maintain the perovskite structure not to be decomposed through strong interaction with a lead-iodine octahedron, and the volatilization speed of the solvents can be regulated and controlled by regulating and controlling the proportion of the solvents. Therefore, directional secondary growth of perovskite crystal grains is realized in annealing of preparation of the modification layer, and a two-dimensional perovskite phase with a high lead iodine octahedron layer number, namely a high n value, is mainly used.

To provide a film which can increase the conversion efficiency of a photoelectric conversion element by using a photoelectric conversion element for a light absorption layer.SOLUTION: A membrane 13 includes crystals represented by the composition formula AgaBibIc and having a crystal structure in which multiple octahedral units, each formed of six I ions, are connected, and Ag ions or Bi ions are arranged at the center of each octahedral unit. When measured by X-ray diffraction, the strongest peak appears in the range of 11.5°≤2θ≤14.0°.SELECTED DRAWING: Figure 2

The invention discloses a quasi-two-dimensional blue-light perovskite light-emitting diode and a preparation method thereof, and the quasi-two-dimensional blue-light perovskite light-emitting diode obtained by using A6BfPBr as an additive inhibits cation diffusion, improves the passivation effect to the greatest extent, and creates a firmer octahedral network. In addition, long organic chain ammonia salt and large group separation distance are contained, and opportunities are created for pairing passivated ammonia and perovskite defect sites, so that the spectral stability of the material is improved; rb with different proportions is added into a perovskite precursor, and the ionic radius of Rb is smaller than that of cesium, so that alloying perovskite RbxCs1-xPbBr3 is expected to be generated by adding Rb < + > into three-dimensional CsPbBr3 perovskite, due to octahedral titration, the perovskite has a larger band gap, the RbxCs1-xPbBr3 perovskite is manufactured by a solution method, and along with the increase of the content of Rb < + >, the optical band gap of the RbxCs1-xPbBr3 film is increased from 2.31 eV to 2.60 eV.

The application provides a Pd6(SR) 12 cluster with an octahedral structure, the Pd6(SR) 12 cluster is a cyclohexanethiol ligand-protected palladium cluster, contains 6 Pd atoms, 12 cyclohexanethiol ligands, the 6 Pd atoms form an octahedral core, and the sulfur atoms in the cyclohexanethiol ligands are connected with the Pd atoms peripherally, and each sulfur atom is connected with two Pd atoms. The application further discloses a preparation method of the Pd6(SR) 12 cluster, and the application fills the technical vacancy of synthesizing Pd clusters with structures other than a ring structure, and has high popularization value.

The jumping type V-groove machine and the innovative knife line structure are adopted, the automatic box gluing machine with the automatic deviation rectifying function is combined with innovative V-grooves with two angles, so that folded edges are not arched, do not deform and do not demould when the automatic box gluing machine is used for gluing boxes, the box gluing edges can be aligned with the folded lines, and the production efficiency is improved. Therefore, automatic box sticking of a six-face box, an eight-face box, a ten-face box, a twelve-face box or a more polyhedral box and a gift box of a top and bottom cover structure can be smoothly achieved, folding transportation can be achieved, and high-grade perfect V-groove boxes can be manufactured in a low-cost and large-batch mode.

The invention discloses a YIG gyromagnetic ferrite material capable of effectively reducing ferromagnetic resonance line width and a preparation method thereof, the chemical formula of the YIG gyromagnetic ferrite material is Ca < 0.3 > CexY < 2.7-x > Mn < 0.05 > Zr < 0.45 > Fe < 4.5 > O12, x is greater than or equal to 0 and less than or equal to 0.5, the YIG gyromagnetic ferrite material has a complete garnet structure, Ca < 2 + > and Ce < 3 + > replace dodecahedral Y < 3 + > ions of a YIG ferrite lattice structure, and Mn < 2 + > and Zr < 2 + > respectively replace octahedral Fe < 3 + > of the YIG ferrite lattice structure; meanwhile, Bi2O3 is introduced as a sintering aid to promote the YIG ferrite to be fully sintered at 1280 DEG C, so that the microwave characteristics of the material are improved, the saturation magnetization is higher, the coercive force is lower, more importantly, the ferromagnetic resonance line width can be greatly narrowed, and the material becomes a base material of a microwave ferrite device with high integration level, small size and excellent electromagnetic performance.

The invention discloses a bimetallic rare earth MOF (Metal Organic Framework) catalyst and an application method of the bimetallic rare earth MOF catalyst in preparation of hydrogen peroxide. Ce < 3 + > is directionally doped to an MIL-100 (Mn) skeleton through a modification method to form an octahedral microporous crystal (Mn1Ce2) MOF catalyst with a certain Mn / Ce molar ratio. When the molar ratio of Mn to Ce is 1: 2, the BET specific surface area of the (Mn1Ce2) MOF catalyst is 560 m < 2 > / g. The catalyst is in the presence of visible light ([lambda] gt; under the ozone atmosphere (420 nm) and 700 ppb, the yield reaches 1602 [mu] mol.g <-1 >. H <-1 > (pure water system), the activity is kept at 87.1% after five times of circulation, and the problems that a traditional photocatalytic system is low in oxygen mass transfer efficiency and needs a sacrificial agent are solved.

The invention provides a transition metal Fe doped vanadyl phosphate material and a preparation method thereof. Fe partially replaces V metal cations in crystal lattices, a local coordination environment and an electronic structure are adjusted, a stable Fe-O-P-O-V delocalized electronic structure is formed, and Zn < 2 + > intercalation / deintercalation reversibility and crystal lattice stability are optimized. Compared with the traditional VOPO4, the Fe-doped vanadyl phosphate material has the advantages that the V-O bond strength is obviously enhanced, the interplanar spacing is reduced, the dissolution of PO4 < 3 > and the fracture of a lattice structure are inhibited, the symmetry of a VO6 octahedron is obviously improved, and excellent circulation (the capacity retention ratio reaches 80% after 2000 times of circulation) and rate capability are shown. The preparation process is simple, low in cost, mild in reaction condition, high in yield and low in equipment dependence; the obtained positive electrode material is improved in capacity, enhanced in structural stability and improved in rate capability, and an innovative solution is provided for developing a high-stability aqueous ion battery positive electrode material.

To provide a thermal conductor capable of forming a heat flow path between adjacent diamonds.SOLUTION: A thermal conductor 100 according to the present invention includes a diamond-containing metal layer 20 that includes a plurality of diamonds 40 arranged in one layer and a metal 42 that fixes the diamonds 40. The diamonds 40 are polyhedrons of octahedrons or higher, and adjacent diamonds 40 are in face-to-face contact with each other, and the diamonds 40 are arranged such that an end 40B of each diamond 40 on one face 20B side of the diamond-containing metal layer 20 forms an apex or a ridgeline.SELECTED DRAWING: Figure 1

This invention discloses a CuS nanostructure material, its preparation method, and its applications. The CuS nanostructure material uses Cu-MOF octahedrons as a precursor, which are hydrothermally sulfided to obtain an octahedral hierarchical structure assembled from CuS nanorods. The CuS nanorods have a size of 50-100 nm, and the edge length of the precursor Cu-MOF octahedrons is 0.8-1 μm. This invention utilizes a one-step hydrothermal method to prepare a CuS nanostructure material through Cu-MOF sulfidation, resulting in a zinc-ion battery anode material with high conversion efficiency and excellent electrochemical performance.

This invention belongs to the field of superhard material synthesis technology, specifically disclosing a high-temperature, high-pressure preparation method for nano-polycrystalline diamond with synergistic mechanical and thermal properties. The method includes the following steps: precursor preparation: pre-pressing the precursor in a cemented carbide mold; octahedral assembly; wrapping the pre-pressed sample with platinum foil and placing it at the center of the octahedron; high-temperature, high-pressure sintering; stopping heating after heat preservation, allowing it to cool naturally to 23-25°C, then depressurizing, removing the octahedral assembly and the platinum foil wrapping, thus obtaining the synergistically enhanced nano-polycrystalline diamond. This invention employs the above-mentioned high-temperature, high-pressure preparation method for nano-polycrystalline diamond with synergistic mechanical and thermal properties. By combining nanodiamond powder with graphene, the sample assembly is optimized, and nano-polycrystalline diamond samples with excellent mechanical properties and significantly improved thermal conductivity are synthesized under relatively mild temperature and pressure conditions.

The invention discloses a face-to-face binuclear cobalt complex and a preparation method and application thereof, and belongs to the technical field of organic synthesis and catalysis, the face-to-face binuclear cobalt complex is a crystal material A or a crystal material B, the chemical formula of the crystal material A is C68H68Co2N4O6, and the chemical formula of the crystal material B is C54H76Co2N6O6; the face-to-face dual-core cobalt complex comprises a crystal material A and a crystal material B. The center distance between two metal cobalt of the crystal material A is 4.821, a ligand is connected with the two metal centers in a bridging mode to form a large cavity, the dual-metal cobalt complex is formed, the two metal cobalt are subjected to synergistic activation at + 2 valence, and the dual-metal cobalt complex is formed. And hydroxyl radicals can be generated through homolysis. Wherein the ligand of the crystal material B is connected with two metal cobalt centers in a carbon chain bridging mode, the coordination environment of each metal cobalt center is in an octahedral configuration, the distance between the two metal centers is 5.720, the two metal centers are in + 3 valence at the same time, and the binuclear cobalt complex is formed.

A method of making a synthetic hectorite-type mineral is described, along with its resulting physical and rheological properties. The synthetic hectorite-type mineral is a 2:1 phyllosilicate essentially free of aluminum, and having a trioctahedral structure with Mg2+ and Li+ occupying octahedral sites. As a hydrogel, the synthetic hectorite-type mineral has a swell index of greater than 55 mL, and a yield point of greater than 290 Pa. The method of making uses a MgO / MgCO3 buffer system, with heating for about 2 hours at temperatures of no higher than 300° C. and pressures of no higher than 600 psi.

The invention relates to the technical field of boiler equipment, in particular to a boiler air heater based on an octahedral array structure. According to the technical scheme, the boiler air heater based on the octahedral array structure comprises heat exchange pipeline units, the boiler air heater is formed by arranging the multiple heat exchange pipeline units in parallel in the steam flowing direction, each heat exchange pipeline unit comprises a regular octahedral pipeline and a cylindrical pipe, and multiple sets of regular octahedral pipelines are arranged on one side of each cylindrical pipe; the heat exchange unit formed by connecting a plurality of regular octahedron pipelines in series is adopted, each regular octahedron is of a structure with a complex space flow channel formed by connecting a plurality of edge pipes, when steam flows through each octahedron unit, the steam is subjected to multiple times of flow division and re-convergence processes, and therefore the heat transfer coefficient of the steam in the pipes is effectively increased, and the heat exchange efficiency of the steam is improved. And meanwhile, the non-straight structure on the outer surface of the octahedral pipeline also enhances the flow disturbance of the air side, the convection heat exchange efficiency outside the pipeline is improved, and the heat exchange capacity and the heat energy utilization efficiency of the air heater are remarkably improved.

The application provides an ultramicroporous zinc-based MOF material, a preparation method thereof and application thereof in ammonia adsorption, and belongs to the technical field of crystalline materials. The material is an ultramicroporous zinc-based metal organic framework material with a three-dimensional periodic network structure, which is formed by coordination self-assembly of Zn 2+ ions, squarate ligands and triazoles ligands, wherein Zn 2+ ions exist in two coordination modes of hexa-coordinated octahedron and tetra-coordinated tetrahedron; the molecular formula of the material is [Zn2(C4O4)(C2H2N3)2], wherein C4O4 2‑ is a squarate ligand, and C2H2N3 ‑ is a triazole ligand. The application also provides application of the ultramicroporous zinc-based MOF material in ammonia adsorption. The MOF material has good stability, can maintain the integrity of the framework structure after being soaked in water for 7 days, and has good ammonia adsorption performance.

The invention discloses a cobalt-doped ruthenium dioxide nanoparticle material as well as a preparation method and application thereof, and relates to a ruthenium dioxide nanoparticle material as well as a preparation method and application thereof. The nano-particle cluster is formed by irregularly distributing nano-particles; the nanoparticles have a single-phase crystal structure, and the spacing distribution of {110} crystal faces is 0.315 nm; the material is composed of three elements of Co, Ru and O, wherein Co is doped into RuO2 to form Co < 0.3 > Ru0. 7O2 nanoparticles; the material is of an octahedral structure, and Ru sites are replaced by Co doping; the chemical valence state of Ru on the surface of the material is a mixed valence state of + 3 and + 4; charge transfer occurs among three ions of Co, Ru and O, so that Ru is in a lower oxidation state. The cobalt-doped ruthenium dioxide nanoparticle material is used for electrolyzing water to produce hydrogen, and shows 2500-hour long-term stability under the current density of 10 mAcm <-2 >.

Provided is a gas diffusion layer for a fuel cell. The gas diffusion layer comprises a carbon substrate and a microporous layer formed on the carbon substrate. The microporous layer contains carbon particles and a water-repellent resin that binds the carbon particles. The microporous layer contains a radical scavenger including nano-sized cerium oxide particles that have a controlled particle shape, which is rectangular parallelepiped, a cube, an octahedron, or a polyhedron having nine or more surfaces, and are doped with at least one non-metallic element selected from among nitrogen, phosphorus, sulfur, chlorine, and fluorine and / or at least one metal element selected from among La, Pr, Sm, Eu, Gd, Y, Zr, and Nb. The gas diffusion layer can effectively improve the durability of a fuel cell manufactured using same.