Abstract
Nickel molybdate due to its electronic configuration, stable crystalline framework, oxidation-reduction behavior displays perfect physical and chemical properties and rather high electrical conductivity that altogether lets the material display high total capacity. The research work classified modern methods of obtaining nickel molybdates and composites with carbon material on their basis. We have analyzed the fundamental stages of hydrothermal, microwave synthesis, ultrasonic dispersion, mechano-chemical, sol-gel method, and chemical precipitation method. The influence of different synthesis conditions on phase structure, morphology, physical and electrochemical properties of material was displayed.
Highlights
Nanostructured materials deserve much of attention due to their unique electrochemical, optical, magnetic, electrical and photocatalytic properties [1, 2]
Lithium batteries and supercapacitors are extensively used as energy-storage devices, with the first having higher energy but less power and needing more time for charging and discharging [3, 4]. Supercapacitors, in their turn prove to be very promising devices because they charge quickly, safe to use, extreme temperatures and physical damage resistance, and commercial supercapacitors ensure about 1 million charge cycles and 98 % energy output efficiency
According to energy containment mechanism by electrode materials, supercapacitors are divided into two types: electric double layer capacitors (EDL) and pseudocapacitors
Summary
Nanostructured materials deserve much of attention due to their unique electrochemical, optical, magnetic, electrical and photocatalytic properties [1, 2]. NiMoO4 due to its electronic configuration, stable crystalline framework, oxidation-reduction behaviour displays perfect physical and chemical properties and rather high electrical conductivity (about 10-6 Оm-1 sm-1), because of molybdenum, associated with high electrochemical activity of nickel that altogether lets the material display high total capacity [22]. That is why we need different strategies for improvement their output performance including regulation and morphology optimization, structure and the process of obtaining NiMoO4 material. We have classified the methods of obtaining nickel molibdates, analyzed the influence of different synthesis conditions on phase structure, morphology, physical and electrochemical properties of material. The paper contains the survey of primary modes of obtaining NiMoO4 and composites with carbon material on its basis and compared output performance of the given materials in the capacity of supercapacitors of electrodes
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