Synthesis, characterization, thermal analysis and electrical properties of (NH4)2M(SO4)2·6H2O (M = Cu, Co, Ni)
| Autor: | Abir Bejaoui, Antonio Diego Lozano-Gorrín, Massoud Kahlaoui, Ahmed Souamti, Dalila Ben Hassen Chehimi, Julián Morales Palomino |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Mechanical Engineering Analytical chemistry 02 engineering and technology Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Evaporation (deposition) 0104 chemical sciences Thermogravimetry Transition metal Mechanics of Materials General Materials Science 0210 nano-technology Thermal analysis Spectroscopy Absorption (electromagnetic radiation) Monoclinic crystal system |
| Zdroj: | Materials Science and Engineering: B. 240:97-105 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2019.01.016 |
| Popis: | With the aim to prepare new materials suitable for the storage energy field, we have reported the elaboration, by the slow evaporation method at room temperature, of Tutton’s salts crystals with chemical formula (NH4)2M(SO4)2·6H2O (M = Co, Ni, Cu) and denoted as NHMS6. X-ray diffraction (XRD) shows a simple monoclinic system for the obtained phases with the space group P21/a (Z = 2). Visible (Vis) spectroscopy presents the absorption bands of transition metal M2+ in an octahedral environment [M(H2O)6]2+. Thermogravimetry (TG-DTG) analysis shows difference in dehydration scheme from one material to another. Electrical properties of anhydrous materials were studied by spectroscopy impedance complex (SIC) in different temperature ranges depending on the compound. Resistance, conductivity values and conduction mechanism within the materials are determined and discussed. These materials can be considered as good candidates in the storage energy application as M-batteries. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect