Researchers at Aalto University School of Chemical Technology have developed a method for producing lithium batteries that is cheaper and more environmentally friendly than previously used methods. This new process has succeeded in replacing the harmful methylpyrrolidone (NMP) solvent, which is traditionally used in the manufacturing of electrodes, with water.
Removing this harmful solvent from the production process makes the production of batteries simpler and safer for employees. Production costs of batteries can be decreased by as much as 5 percent. Some of this savings comes from the reduced cost of transporting and recycling harmful chemicals and a lower risk of exposure to employees.
`Improving production methods is important as the use of batteries is rapidly increasing around the world. The increase in electric car use in particular will strongly increase the global demand and production of batteries´, says Tanja Kallio, Adjunct professor at Aalto University School of Chemical Technology.
A prerequisite for giving up the harmful solvent used in batteries was changing the binding agent to a water-soluble one. Finding the new binding agent, acrylic S020, was difficult because it not only had to be water-soluble but also chemically, electrochemically and mechanically ideal for this purpose.
This story is reprinted from material from Aalto University, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier. Link to original source.