We fabricated lithium-ion batteries (LIBs) using the Super P and carbon nanotubes (CNTs) as conductive agents to investigate the effect of the aspect ratio of conductive agent on the kinetic properties of LIB.
In order to investigate the effect of washing water pH on textile damage for delicate garments, the study was conducted such that a customer survey was first applied to randomly selected users to analyze domestic washing machine using habits of Turkish consumers. Based on the findings of the survey, the experimental study was designed in two successive phases to investigate the dimensional and mechanical behavior of certain types of delicate textiles against varying washing conditions by taking in particular, water properties, namely pH, hardness, and temperature into account, and accordingly to determine the optimized washing conditions for such textiles. Firstly, tergotometer was employed as a washing machine simulator. Within the light of the results obtained, the experimental work of the second phase of the study was conducted, which involved a domestic washing machine as a real-life scenario. All of the results, including the correlation between the data sets obtained from the tergotometer and domestic washing machine trials, were statistically analyzed using Minitab 17. The study produced some important findings regarding the effect of washing water pH on delicate textiles, in addition to an algorithm for improving the present washing program, minimizing textile damage for mainly wool and silk garments.
As the demand for lithium ion batteries (LIBs) with high energy density increases, silicon has attracted great attention as a next-generation anode material due to its high theoretical capacity of 4200mAh/g. However, silicon has been suffered from poor cycleability due to a large volume change during the lithiation process. To tackle this critical problem, some methods have been used, such as nano-sized silicon, porous silicon, and a hollow carbon/silicon composite. However, nano-sized silicon is expensive for commercialization. In addition, the harmful hydrogen fluoride (HF) acid is commonly used to etch silicon oxides for porous structure. In this study, a yolk-shell structure with a space between the carbon shell and micro-sized silicon was made without HF. The poly(vinyl alcohol) (PVA) coated silicon was treated with an iodine followed by stabilization at 200 oC. The iodination process converts the chemical structure of PVA to polyene structure and enhances the carbon yield. The yolk-shell structure was formed by the eliminating an untreated PVA layer during the carbonization process. The prepared yolk-shell silicon/carbon composite worked well as an anode electrode and showed a high initial discharge capacity of 3266 mAh/g and maintained 1700 mAh/g until 200 cycles.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.