"Solid-state batteries (SSBs) are a type of lithium-ion battery that uses a
solid electrolyte instead of a liquid electrolyte. They have several advantages
over traditional lithium-ion batteries, including higher energy density, faster
charging times, and improved safety. They are seen as a promising technology
for electric vehicles (EVs) because they have the potential to significantly
improve the range and performance of EVs.
One of the biggest challenges that the current solid-state batteries face,
apart from cost-effectiveness and scalability, is the development of new
cathode materials that exhibit lasting durability. Comparing SSBs with
conventional lithium-ion batteries, the former offers massive improvements over
the latter in operational safety. Since SSBs are made entirely from solid
materials, there is no danger of spilling toxic liquids when punctured.
Also, SSBs charge much quicker than their liquid contemporaries. However, there
is a weakness in solid electrolytes used in current SSBs, which limits their
durability. The process of inserting or extracting lithium ions from the
electrodes of a battery causes the crystalline structure of the material to
change, leading to the expansion or contraction of the electrode.
This repeated expansion and contraction damages the interface between the
electrodes and the solid electrolyte and also causes irreversible changes in
the crystal chemistry of the electrodes. To address this challenge, an
international team of scientists from Yokohama National University (Japan),
UNSW Sydney, and LIBTEC, Japan, took the task of testing a new type of positive
electrode material with unprecedented stability."
*** Xanni ***
Chief Scientist, Xanadu
Partner, Glass Wings
Manager, Serious Cybernetics