A NiS/Ni3S2 nanorod composite array that directly grows on Ni foil has been used as a counter electrode for dye-sensitized solar cells; these nickel sulfide nanorods exhibit excellent photo-electrical conversion efficiency when compared with conventional noble-metal Pt electrodes.

Oxidation of formaldehyde (HCHO) is very important, owing to its use in fuel cells. Modification of electrodes surfaces is an excellent way to decrease the overpotentials as well as to increase the current density of the voltammetric response.pt as most efficient metal catalyst can easily be poisoned by product of oxidation and also it has high cost. In this work an efficient and low cost elect...

A generalized hydrothermal strategy for fabricating three-dimensional (3D) battery electrodes is presented. The hydrothermal growth deposits electrochemically active nanomaterials uniformly throughout the complex 3D mesostructure of the scaffold. Ni inverse opals coated with SnO2 nanoparticles or Co3O4 nanoplatelets, and SiO2 inverse opals coated with Fe3O4 are fabricated, all of which show att...

Thick carbon nanofiber (CNF) films were uniformly grown on metal wires with the assistance of pre-deposited NiO nanowalls. The as-prepared wire-shaped composites that integrate the capacitance of CNFs and Ni particles were directly used as electrodes to construct high capacitive fiber supercapacitors for micro-power supplies.

Producing reliable electrical contacts of molecular dimensions has been a critical challenge in the field of molecule-based electronics. Conventional thin film deposition and photolithography techniques have been utilized to construct novel nanometer-sized electrodes on the exposed vertical plane on the edge of a thin film multilayer structure (metal/insulator/metal). Via thiol surface attachme...

Reversible solid oxide cells (r-SOCs) can be operated in either fuel cell or electrolysis mode. They are expected to become important the support of renewable energy due their high efficiency for both power generation and hydrogen generation. The exchange current density is one most parameters quantification electrode performance cells. In this study, four different electrodes two air fabricate...

Microstructural evolution of Nickel in Ni-YSZ fuel electrodes is one the main limiting degradation mechanisms solid oxide cells [1]. The redistribution ascribed to its high mobility and low wettability with YSZ, related interfacial surface tensions. Practically, manifests as agglomeration Ni, potentially accompanied by migration, mainly reported electrolysis mode.

The hydrogen evolution reaction depends on the accumulation of electrons catalytic center to enable two-electron processes involved in water reduction. This work reports modification inexpensive nickel (Ni) composite electrodes with engineered semiconductor heterojunctions based earth-abundant transition metals that show superior generation activity presence a non-toxic electrolyte (K2CO3). is,...

A microbial-based biosensor has been developed based on enzyme inhibition bioassay for monitoring the presence of Ni(II) in real-time samples. The sensing element is immobilized Bacillus sphaericus MTCC 5100 yielding urease enzyme. The transducer is an NH4+ ion selective electrode in conjunction with a potentiometer. Heavy metals are potentially toxic to human beings. Nickel is associated with ...

A lightweight, flexible, and highly efficient energy management strategy is highly desirable for flexible electronic devices to meet a rapidly growing demand. Herein, Ni-Co-S nanosheet array is successfully deposited on graphene foam (Ni-Co-S/GF) by a one-step electrochemical method. The Ni-Co-S/GF composed of Ni-Co-S nanosheet array which is vertically aligned to GF and provides a large interf...