Lithium Ion Conducting Polymer Resin for In-Situ Curing of Cathode Binder and Electrolyte Layer for All Solid State Composite Lithium Batteries

Source by By Ryan/ Adobe stock file # 805635617

Background

Solid state batteries are seen as a safer and more efficient alternative to traditional lithium-ion batteries, particularly valuable to sectors like electric vehicles and consumer electronics that require dependable and high-energy power sources. However, a major challenge in their development is the need for separate components to serve as binders and electrolytes—binders provide structural support to electrodes and electrolytes facilitate ion movement. This separation often complicates manufacturing processes and may hinder battery performance, as binders typically act as insulators and do not aid in ion transport. This division not only adds to the production complexity but also impacts the efficiency of energy transfer within the battery.

Description

Northeastern researchers have created a new type of polymer that makes building solid state batteries simpler by performing two roles—it maintains the structural integrity of the battery’s electrodes and helps move lithium ions, which is crucial for battery performance. This polymer is put into the battery as a liquid and then hardened using heat or UV light. Traditional battery polymers don’t help move ions, which limits battery performance. By combining these two functions into one material, this approach not only makes the battery easier to assemble but also improves how long it lasts and how well it works. This new approach has the potential to significantly improve the performance and reliability of solid-state batteries.