Lithium-ion battery

identity of an unknown salt (#3) using ion-exchange chromatography by analyzing the inorganic salts of the unknown salt, which can be examined by acid-base titration using ion-exchange resin. The stationary phase is made up of acid groups which will attach to the resin, which is then rinsed down the column with water. The mobile phase contains the inorganic salt dissolved in a solvent, which is then added to the column. As it goes down the column, an exchange of H+ ions and cations occur. The…

Since there are more than 50 million chemical compounds on Earth and even more being discovered or synthesized each year, it is increasingly difficult to identify compounds.1 However, with the help of physical and chemical properties of the atoms or molecules that make up a compound, identifying a chemical compound is not as daunting as it may seem. There are three main types of chemical compounds: metallic, covalent, and ionic compounds.2 In this experiment, however, the unknown compounds are…

results for the sulfate test due to the formation of a white precipitate, indicating the presence of a sulfate ion. For the sulfate test the unknown solution, potassium sulfate, and combining it with hydrochloric acid and barium chloride. If a sulfate anion was present in the unknown solution, then the anion would combine with the barium and form the precipitate, BaSO4, and the chlorine ion would combine with the unknown’s cation. In this case a sulfate anion was present in the unknown so the…

The stories Conducting Solutions, Energy Story, and the video Hands-On Science with Squishy Circuits have all helped me learn a lot more about electricity. The purpose of these sources were to help the reader to understand and inform the reader about how electricity is made. It also showed how easy it is to make electricity. These three sources have many differences and similarities but they all serve the same purpose. In the video Hands-On Science with Squishy Circuits it talks about how easy…

Group Experiment Theory Our experiment tests multiple smartphones’ battery life and answers the question of how long do our batteries really last. Since having a smartphone is used as a resource for most of us, it can really affect our everyday lives. Our group wanted to find out the truth about how much battery percentage our apps use on one full charge. One reason we chose this experiment is because the data is accessible to us and easy to track. Additionally, since our group members happen…

General Motors introduced the EV1 in 1996, after over 30 years of testing and exploration. The EV1 was a battery powered vehicle, called the Chevrolet Electovair. The vehicle was principally announced to fulfill the California zero-emissions decree. However, when state guidelines reformed, General Motors allowed their customer leases elapse and terminated manufacturing the EV1 2003. In the end, the EV1 cost GM over $1 billion. General Motors created a model for an electric car that they…

current flow through the copper electrodes increased as the electrolyte concentration increased, supporting the hypothesis, and corresponding to the research. This would have been because as the electrolyte concentration increased, the amount of Na+ ions and Cl- in the solution…

The solar cell that will be included in the watch will supply enough power to charge the battery on the fitness watch. This enables the fitness tracker to run off solar power and allows the consumer to keep the watch on constantly. Another addition that will be made is incorporating an artificial intelligence (AI), this will interpret the user’s…

Metal electrodeposition is the process of reduction reaction and crystallization of metal ions in an electrolytic cell according to the mechanism of electrolysis. Electrodeposition is one of the main methods for improving and enhancing the metal substrate property. Now, in order to overcome the defect of single electrodeposition with shortcomings of cracks, pores, pits, pocking and so on, the modern new techniques sprang up such as jet electrodeposition [1], ultrasonic vibration assisted…

Capacitance properties of electrodeposited polyaniline films on stainless steel substrate. A.A. Al-Owais1,I. S. El-Hallag2, M.A. Ghanem3 1,3Chemistry Department, Faculty of Science, King Saud University, Riyadh ,SA 2Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt Abstract. Polyaniline (PANI) thin films were successfully synthesized from a mixed solution of 1M aniline and two different concentration solutions of H2SO4 on a stainless steel substrate. The…