摘要:
A negative electrode material for lithium ion secondary batteries, the negative electrode material comprising particles (A) containing an element capable of occluding/releasing lithium ions other than a carbon element; graphite particles (B) capable of occluding/releasing lithium ions and having a median value of not smaller than 1.4 and not larger than 3.0 in a number-based distribution of aspect ratios of primary particles and carbon fibers (C); wherein a three dimensional web structure is formed from one or more carbon fibers (C), the particles (A) are fusion-bonded to the structure, and the structure is fusion-bonded to at least a part of a surface of the graphite particle (B). A lithium ion secondary battery is obtained using the negative electrode material.
摘要:
Provided herein is a method of manufacturing a nanoscale coated network, which includes providing nanofibers, capable of forming a network in the presence of a liquid vehicle and providing a nanoscale solid substance in the presence of the liquid vehicle. The method may also include forming a network of the nanofibers and the nanoscale solid substance and redistributing at least a portion of the nanoscale solid substance within the network to produce a network of nanofibers coated with the nanoscale solid substance. Also provided herein is a nanoscale coated network with an active material coating that is redistributed to cover and electrochemically isolate the network from materials outside the network.
摘要:
A composition having nanoparticles of a refractory-metal carbide or refractory-metal nitride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles with an organic compound having a char yield of at least 60% by weight to form a precursor mixture.
摘要:
Additive manufacturing powder contains a core-shell type particle containing a core particle comprising a first binder resin and a filler and a shell present on the surface of the core particle. The shell contains a second binder resin. The powder has a particle size distribution Dv/Dn of 1.5 or less and an average circularity of from 0.800 to 0.980, the average circularity being represented by the following relation: Average circularity = a perimeter of a circle having the same area as a projected image of a particle / the perimeter of the projected image of a particle × 100.
摘要:
Methods and apparatus for selectively sintering particulate material, the method comprising: providing a layer (6) of particulate material; providing an amount of a radiation absorbent material over a selected surface portion of the layer (6) of particulate material; providing an amount of a material that comprises a plurality of elongate elements (16) over at least part of the selected surface portion of the layer (6) of particulate material; and providing radiation (8) across the selected surface portion of the layer (6) of particulate material so as to sinter a portion of the material of the layer (6) including causing the plurality of elongate elements (16) to become embedded in the sintered portion of material.
摘要:
The invention relates to a method for the braze-assembly of two parts (10, 20) made from a composite material, each part comprising an assembly face (10a, 20a) intended to be brazed to the assembly face of the other part. The method comprises the following steps: producing a plurality of cavities (101) in the assembly face (10a) of at least one of the two parts (10) made from composite material, at least one portion of said cavities opening onto one or more portions (10b, 10c) of the part that do not form part of the assembly face; inserting capillary elements (30) between the assembly faces of the parts made from composite material; placing a brazing composition (41) in contact with one portion of the capillary elements (30); liquefying the brazing composition (41) by means of heat treatment, such as to produce the capillary distribution of the molten brazing composition between the assembly faces (10a) of the parts of composite material.
摘要:
The present invention relates to a method for the manufacture of composites consisting of carbon nanotubes (CNTs) and/or carbon fibres (CFs) and crystalline diamond. The CNTs/CFs (2) or a structure formed of CNTs/CFs is coated with a barrier layer (4) that consists of a material that protects the CNTs/CFs (2) against reactive gases required or favorable for diamond formation. The barrier layer (4) is providing nucleation sites due to a seeding-treatment with a suspension of nanocrystalline diamond powder (5), and crystalline diamond (6) is subsequently deposited on the barrier layer (4) of the CNTs/CFs (2) using a CVD deposition process that involves a reactive gas atmosphere that promotes the formation of sp3 -bonded carbon. The method allows the formation of high quality diamond on CNTs/CFs without damage to the CNT/CF or their surface.
摘要:
A composition having nanoparticles of a refractory-metal carbide or refractory-metal nitride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles with an organic compound having a char yield of at least 60% by weight to form a precursor mixture.
摘要:
The problem of the present invention attempts to provide a CNT dispersion liquid, a CNT compact, a CNT composition, a CNT agglomerate and method of producing each, the CNT dispersion liquid being stable at a high concentration with very little damage to the CNTs, maintaining excellent electrical properties, thermal conduction and mechanical properties and a high level of dispersion. A CNT dispersion liquid of the preset invention includes a CNT agglomerate arranged with a mesh body formed from a plurality of CNTs, the CNT agglomerate being dispersed in a dispersion medium is provided wherein a CNT agglomerate is obtained by extracting from the dispersion liquid and drying the CNT agglomerate the obtained CNT agglomerate has a pore size of 0.02 µm or more and 2.0 µm or less being maximized a differential pore volume in a pore size range of 0.002 µm or more and 10.00 µm or less measured using a mercury intrusion porosimeter.