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Si is Theoretical Carbon Structure structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Si is bonded to four equivalent Si atoms to form a mixture of edge and corner-sharing SiSi4 tetrahedra. There are two shorter (2.36 Å) and two longer (2.39 Å) Si–Si bond lengths.
C is Theoretical Carbon Structure structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. C is bonded to four equivalent C atoms to form a mixture of edge and corner-sharing CC4 tetrahedra. There is two shorter (1.53 Å) and two longer (1.58 Å) C–C bond length.
Copper-carbon composites are a group of materials with excellent mechanical, electrical, thermal, and tribological properties. However, bulk size copper-carbon composites made by the traditional manufacturing processes, like rolling or extrusion, fall short of reaching some of these properties predicted by theory or demonstrated only by samples at centimeter scale or smaller. The two main challenges to the successful scaling-up are: 1) to uniformly disperse carbon in the metal matrix; 2) to avoid degradation due to oxidation or reaction from overheating. In this work, we first demonstrate friction extrusion as a new method to make bulk-size void-free copper-carbon composite wires with homogenized carbon dispersion. Three different carbon varieties, graphite powder, graphene nanopowder, and carbon nanotubes, were added to the copper matrix with the concentration ranging from 0.5 wt% to 15 wt%. Special tooling, processing parameters, and procedures were developed, especially for high carbon content samples. Ten-fold reductions of both copper grain size and carbon particle size were achieved and attributed to the high shear deformation. Energy dispersive X-ray spectrometry indicates the carbon powder was refined to a sub-micron level and uniformly dispersed in the copper matrix. Compared with that of pure copper, the thermal capacity of the composite wire increases by 30 % while density reduces by 29 %.
A system for use in recovering carbon dioxide from a stream of gas includes an absorption unit configured to receive the stream of gas and a stream of liquid absorbent. The gas includes carbon dioxide and vaporized water, and the liquid absorbent is chemically reactive with the carbon dioxide to form a solidified carbon dioxide-rich absorbent material. The gas and the liquid absorbent are mixed in the absorption unit such that a slurry that includes the solidified carbon dioxide-rich absorbent material and condensed water is formed therein. The system also includes a transport mechanism coupled in communication with the absorption unit, wherein the transport mechanism is configured to channel the slurry downstream from the absorption unit.
A system and method for recovering carbon dioxide from a stream of gas using an absorption unit configured to receive the stream of gas and a stream of liquid absorbent. The gas includes carbon dioxide and vaporized water, and the liquid absorbent is chemically reactive with the carbon dioxide to form a solidified carbon dioxide-rich absorbent material. The gas and the liquid absorbent are mixed in the absorption unit such that a slurry that includes the solidified carbon dioxide-rich absorbent material and condensed water is formed therein. The system and method may also employ a transport mechanism coupled in communication with the absorption unit, wherein the transport mechanism is configured to channel the slurry downstream from the absorption unit.
CO is alpha carbon monoxide structured and crystallizes in the cubic P2_13 space group. The structure is zero-dimensional and consists of four formaldehyde molecules. C2+ is bonded in a single-bond geometry to one O2- atom. The C–O bond length is 1.14 Å. O2- is bonded in a single-bond geometry to one C2+ atom.
This study presents a novel approach to developing high-performance lithium-ion battery electrodes by loading titania-carbon hybrid spherogels with sulfur. The resulting hybrid materials combine high charge storage capacity, electrical conductivity, and core-shell morphology, enabling the development of next-generation battery electrodes. We obtained homogeneous carbon spheres caging crystalline titania particles and sulfur using a template-assisted sol-gel route and carefully treated the titania-loaded carbon spherogels with hydrogen sulfide. The carbon shells maintain their microporous hollow sphere morphology, allowing for efficient sulfur deposition while protecting the titania crystals. By adjusting the sulfur impregnation of the carbon sphere and varying the titania loading, we achieved excellent lithium storage properties by successfully cycling encapsulated sulfur in the sphere while benefiting from the lithiation of titania particles. Without adding a conductive component, the optimized material provided after 150 cycles at a specific current of 250 mA g -1 a specific capacity of 825 mAh g -1 with a Coulombic efficiency of 98%.
CO is alpha carbon monoxide-like structured and crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four formaldehyde molecules. C2+ is bonded in a single-bond geometry to one O2- atom. The C–O bond length is 1.22 Å. O2- is bonded in a single-bond geometry to one C2+ atom.
CN is alpha carbon monoxide-like structured and crystallizes in the orthorhombic Pbca space group. The structure is zero-dimensional and consists of eight hydrogen cyanide molecules. C3+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.17 Å. N3- is bonded in a single-bond geometry to one C3+ atom.
NO is alpha carbon monoxide-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four nitroxyl molecules. N is bonded in a single-bond geometry to one O atom. The N–O bond length is 1.17 Å. O is bonded in a single-bond geometry to one N atom.
HI1 is alpha carbon monoxide-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of sixteen hydriodic acid molecules. H1+ is bonded in a single-bond geometry to one I1- atom. The H–I bond length is 1.64 Å. I1- is bonded in a single-bond geometry to one H1+ atom.
TcB is alpha carbon monoxide-like structured and crystallizes in the hexagonal P6_3mc space group. The structure is zero-dimensional and consists of two TcB clusters. Tc3- is bonded in a single-bond geometry to one B3+ atom. The Tc–B bond length is 1.77 Å. B3+ is bonded in a single-bond geometry to one Tc3- atom.
AgI is alpha carbon monoxide-like structured and crystallizes in the hexagonal P6mm space group. The structure is zero-dimensional and consists of one silver iodide molecule. Ag1+ is bonded in a single-bond geometry to one I1- atom. The Ag–I bond length is 2.56 Å. I1- is bonded in a single-bond geometry to one Ag1+ atom.
ClF is alpha carbon monoxide-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four chlorine fluoride molecules. Cl is bonded in a single-bond geometry to one F atom. The Cl–F bond length is 1.69 Å. F is bonded in a single-bond geometry to one Cl atom.
HBr is alpha carbon monoxide structured and crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of four hydrobromic acid molecules. H1+ is bonded in a single-bond geometry to one Br1- atom. The H–Br bond length is 1.44 Å. Br1- is bonded in a single-bond geometry to one H1+ atom.
CO is alpha carbon monoxide-like structured and crystallizes in the trigonal R3c space group. The structure is zero-dimensional and consists of twenty-four formaldehyde molecules. C2+ is bonded in a single-bond geometry to one O2- atom. The C–O bond length is 1.14 Å. O2- is bonded in a single-bond geometry to one C2+ atom.
HBr is alpha carbon monoxide-like structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four hydrobromic acid molecules. H1+ is bonded in a single-bond geometry to one Br1- atom. The H–Br bond length is 1.47 Å. Br1- is bonded in a single-bond geometry to one H1+ atom.
HF is alpha carbon monoxide-like structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four hydrofluoric acid molecules. H1+ is bonded in a single-bond geometry to one F1- atom. The H–F bond length is 0.95 Å. F1- is bonded in a single-bond geometry to one H1+ atom.