Solid-state argyrodite electrolytes are promising candidate materials to produce safe all-solid-state lithium batteries (ASSLBs) due to their high ionic conductivity. These batteries can be used to power electric vehicles and portable consumer electronics which need high power density. Atomic-scale modeling with ab initio calculations became an invaluable tool to better understand the intrinsic properties and stability of these materials. It is also used to create new structures to tailor their properties. This review article presents some of the recent theoretical investigations based on atomic-scale modeling to study argyrodite electrolytes for ASSLBs. A comparison of the effectiveness of argyrodite materials used for ASSLBs and the underlying advantages and disadvantages of the argyrodite materials are also presented in this article.

Steel, compared to iron is an alloy of iron with commonly a few percent of carbon to enhance its strength and fracture resistance. The use of stainless steel in the design of structures remains a relevant discussion across different areas. In fact, the importance of structural steel in the glocal world has applications in virtually every sector. Also, aluminum steel has been used widely in residential applications, commercial buildings, and vehicular (automotive) designs. A close comparison of these three sheets of steel will give enlightenment about what brings them together and their applications for such characteristics they possess that seem alike. Many researchers argue about the possibility of their sustainability both in terms of cost, availability, fire resistance, and fabrication. Understanding their behaviors following their comparison will provide accurate answers to these propositions. This paper compares the stainless, structural, and aluminum steels in terms of usage, properties (chemical and mechanical), compares exclusively the structural and stainless steel design provisions, reviews recent research activities, and highlights the important developments.

The most noteworthy advantage of solar power as compared to other forms of energy is that it is clean and might be supplied with no contamination to the environment. Over the past centuries, it is believed that energy from fossil fuels is less expensive and more helpful than energy from other sources. This research thus results to the successful fabrication of a solar dryer with tests distributed for various performance comparisons like No-load and load performance of the dryer. Direct sun-drying comparisons depicted discernable contrasts within the final moisture content specified. The utmost temperature recorded within the drying chamber and solar dish for No-load are 44.5 and 52 respectively. Whereas when the cupboard is loaded, the highest temperature of 34.5 and least temperature of 23 are recorded. An average temperature of 27 was obtained, thereby giving the solar dryer an exegetic efficiency between 70% and 80%. Performances of the tests were done from 9am to 5pm. The solar store that was designed to heat to the drying chamber within the night was found to possess its most elevated temperature at 43 . These performance results were achievable due to daily precipitation, and in some cases, cloudy days when the sun was not shining at its peak. The load outcome was done with red-sweet pepper and yam food items.