Techtalk

                           Lithium-ion batteries are common rechargeable batteries for portable electronics, with a high energy density, tiny memory effect and low self-discharge. Lithium-ion batteries are also growing in popularity for military, electric vehicle and aerospace applications. Invention                      Lithium batteries were first proposed by British chemist M Stanley Whittingham, now at Binghamton University, while working for Exxon in the 1970s. He proposed a lithium-titanium disulfide battery, which was discontinued because of the high cost of titanium disulfide also when exposed to air, titanium disulfide reacts to form hydrogen sulfide compounds, which have an unpleasant odor and are toxic to most animals. As well as Batteries with metallic lithium electrodes presented safety issues, as lithium is a highly reactive element; it auto ignites exposed to normal atmospheric conditions because of spontaneous reactions with water and oxygen

        Solenoid is a coil wound into a tightly packed helix. In physics,  the term solenoid refers to a coil whose length is substantially greater than its diameter  which produces a uniform magnetic field  in a volume of space   when an electric current  is passed through it .              A  solenoid engines are nothing but engines run on electrical energy instead of chemical energy. Like conventional engines this system also has cylinder, piston. In this system we used Solenoid as cylinder and the made of either of magnetic material or a magnet  but rest parts of this system have to made with non-ferrous materials , to convert electrical energy into mechanical energy.        Solenoid behaves like a magnet when electricity supplied to it. So we will induce the solenoids for piston’s reciprocation.       Solenoid engine is nice concept but  they don’t have any practical use due to the low efficiency in converting electric to mechanical energy, electric motors are far more ef