Carbon-reinforced NiS/TiCT MXene composite as an anode for superior-performance lithium-ion capacitors.

Lithium ion capacitors (LICs) are a new generation of energy storage devices that combine the super energy storage capability of lithium ion batteries with the satisfactory power density of supercapacitors. The development of high-performance LICs still faces great challenges due to the unbalanced reaction kinetics at the anode and cathode. Therefore, it is an inevitable need to enhance the electron/ion transfer capability of the anode materials.

Hydrothermal Synthesis of Co-Doped NiSe₂ Nanowire for High-Performance Asymmetric Supercapacitors.

Co@NiSe₂ electrode materials were synthesized via a simple hydrothermal method by using nickel foam in situ as the backbone and subsequently characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and a specific surface area analyzer. Results show that the Co@NiSe₂ electrode exhibits a nanowire structure and grows uniformly on the nickel foam base. These features make the electrode show a relatively high specific surface area and electrical conductivity, and thus exhibit excellent electrochemical performance.

Syntheses and crystal structures of two heterometallic iodoplumbates containing mixed-valence copper(I/II).

Mixed-valence copper(I/II) atoms have been introduced successfully into a Pb/I skeleton to obtain two heterometallic iodoplumbates, namely poly[bis(tetra-n-butylammonium) [bis(μ-dimethyldithiocarbamato)dodeca-μ-iodido-hexa-μ-iodido-tetracopper(I)copper(II)hexalead(II)]], {(CHN)[CuCuPb(CHNS)I]}, (I), and poly[[μ-iodido-tri-μ-iodido-iodido[bis(1,10-phenanthroline)copper(I)]copper(I)copper(II)lead(II)] hemiiodine], {[CuCuPbI(CHN)]·0.5I}, (II), under solution and solvothermal conditions, respectively. Compound (I) contains two-dimensional anionic layers, which are built upon the linkages of Cu(SCNMe) units and one-dimensional anionic Pb/I/Cu chains.

[PbCuI(phen)]: a novel organic-inorganic hybrid ferromagnetic semiconductor.

An iodoplumbate-based organic-inorganic hybrid ferromagnetic semiconductor, [PbCuI(phen)], has been solvothermally synthesized. The ferromagnetic exchange interaction is resulting from the multiple aromatic π-π stacking interactions between the adjacent phen molecules.

Poly[[diaqua-bis-(μ(3)-isonicotinato-κN:O:O')bis-(μ(2)-isonicotinato-κN:O)gadolinium(III)disiliver(I)] nitrate monohydrate].

In the title compound, {[Ag(2)Gd(C(6)H(4)NO(2))(4)(H(2)O)(2)]NO(3)·H(2)O}(n), the Gd(III) ion is coordinated by eight O atoms from six isonicotinate ligands and two water mol-ecules in a distorted square anti-prismatic geometry. Two Ag(I) ions are each bonded to two N atoms from two isonicotinate ligands in a linear or bow-like fashion [N-Ag-N angles = 178.6 (2) and 147.

Poly[diaqua-tris(μ(4)-isophthalato)dilanthanum(III)].

In the title coordination polymer, [La(2)(C(8)H(4)O(4))(3)(H(2)O)(2)](n), there are two independent La(III) atoms which are coordinated differently in slightly distorted penta-gonal-bipyramidal and slightly disorted bicapped trigonal-prismatic environments. The La(III) ions are bridged by μ(4)-isophthalate ligands, forming two-dimensional layers. In the crystal structure, these layers are connected by inter-molecular O-H⋯O hydrogen bonds into a three-dimensional network.

Bis(μ-N,N-dimethyl-dithio-carbamato-κS,S':S)bis-[(N,N-dimethyl-dithio-carbamato-κS,S')copper(II)].

In the centrosymmetric dimeric title compound, [Cu(2)(C(3)H(6)NS(2))(4)], the Cu(II) atom is five-coordinate in a square-pyramidal environment. The basal coordination positions are occupied by four S atoms from two dimethyl-dithio-carbamate ligands and the apical coordination position is occupied by an S atom also bonded to the other Cu atom.

(N,N-Diethyl-dithio-carbamato-κS,S')iodido(1,10-phenanthroline-κN,N')copper(II).

The copper(II) atom in the title compound, [Cu(C(5)H(10)NS(2))I(C(12)H(8)N(2))], is chelated by the N-heterocycle and the dithio-carbamate anion in a slightly distorted tetragonal coordination. The tetragonal-pyramidal coorination is completed by the iodine atom in the apical position. One ethyl group is disordered over two positions with site occupancies of 0.

(2,2'-Bipyridine-κN,N')iodido(piperidine-1-carbodithio-ato-κS,S')copper(II).

In the title compound, [Cu(C(6)H(10)NS(2))I(C(10)H(8)N(2))], the Cu(II) ion is coordinated by one iodide ion, two N atoms of the bipyridine ligand and two S atoms from the piperidine-carbodithio-ate ligand in a distorted square-pyramidal environment. π-π stacking inter-actions, with centroid-centroid distances of 3.643 (4) Å, between pyridyl rings of the bipyridyl ligands of neighbouring mol-ecules lead to chains propagating parallel to the a axis.

(2,2'-Bipyridine-κN,N')iodido(pyrrol-idine-1-dithio-carboxyl-ato-κS,S')copper(II).

In the title compound, [Cu(C(5)H(8)NS(2))I(C(10)H(8)N(2))], the Cu(II) ion is coordinated by one iodide ion, two N atoms of the bipyridine ligand and two S atoms from the pyrrolidine-1-dithio-carboxyl-ate ligand in a distorted square-pyramidal environment.

Iodido(1,10-phenanthroline-κN,N')(piperine-1-carbodithioato-κS,S')copper(II).

In the title compound, [Cu(C(6)H(10)NS(2))I(C(12)H(8)N(2))], the Cu(II) ion is coordinated by one iodide ion, two N atoms of the phenanthroline ligand and two S atoms from the piperidyl-dithio-carbamate ligand in a distorted square-pyramidal environment.

catena-Poly[[diiodozinc(II)]-mu-4,4'-bipyridine-kappa2N:N'].

The title compound, [ZnI2(bipy)]n (bipy is 4,4'-bipyridine, C10H8N2), has been prepared by the hydrothermal reaction of ZnI2 and bipy at 433 K. Each Zn atom is coordinated by two N atoms from two different bipy ligands and by two I atoms in a distorted tetrahedral geometry, with Zn-N distances ranging from 2.068 (7) to 2.

Syntheses, crystal structures, and properties of heterometallic iodoplumbates: bicubane, ribbon, and chain configurations.

Successful introduction of Cu/Ag cations into the Pb/I system has led to the formation of four unprecedented heterometallic iodoplumbates in which the common connection of PbI6 units has been remarkably altered. Also, interesting long-lived fluorescence properties have been found.