This battery is suitable for high capacity applications such as electric vehicles, as it can be used at high temperatures and recharges rapidly.
Scientists have discovered a stable and highly conductive lithium-ion conductor for use as electrolytes for solid-state lithium-ion batteries .
According to research, all-solid-state lithium-ion (Li-ion) batteries with solid electrolytes are not flammable and have more energy than those with liquid electrolytes. They are expected to take market share from traditional liquid electrolyte Li-ion batteries such as electric vehicles.
However, despite these advantages, solid electrolytes have low Li-ion conductivity and pose challenges in achieving adequate electrode-solid electrolyte contact. While sulfide-based solid electrolytes are conductive, they react with moisture to form toxic hydrogen disulfide .
Therefore, to create safe, long-lasting and fast-charging solid-state Li-ion batteries, non-sulfide solid electrolytes are required.
In a recent study published in the journal Chemistry of Materials, researchers discovered a stable and highly energetic Li-ion.
Quoting the study, the researcher said that creating an all-solid-state lithium-ion secondary battery has been a long-time dream of many battery researchers. Researchers have discovered an oxide solid electrolyte that is a key component of all-solid-state lithium-ion batteries, which have both high energy density and safety. In addition to being stable in air, the material is similar to previously reported oxide solid electrolytes. Lasts longer with more energy than.
Even at -10 degrees Celsius, the new material has the same energy as conventional oxide-based solid electrolytes at room temperature. Also tested at temperatures above 100 °C, this solid electrolyte has an operating range of -10 °C to 100 °C.
Traditional lithium-ion batteries cannot be used at temperatures below zero. Therefore, the operating conditions of lithium-ion batteries for mobile phones commonly used is zero degrees Celsius to 45 degrees Celsius.
According to the research, Li-ion conduction mechanism was investigated in this material. The first path to the pyrochlore-type structure covers the F ions located in the tunnels formed by the MO6 octahedra. Conduction Mechanism There is sequential movement of Li-ions while changing bonds with F ions.
Li ions always move to the nearest Li state by passing through anomalous states. The stable La3+ bound to the F ion inhibits Li-ion conduction by blocking the conduction path and disappearing the surrounding heterostable or metastable states.
Unlike existing lithium-ion secondary batteries, oxide-based all-solid-state batteries have no risk of electrolyte leakage causing damage and no risk of toxic gas generation like sulfide-based batteries. Therefore, this new work is expected to encourage future research.
The newly discovered material is safer and lasts longer with more energy than previously reported oxide-based solid electrolytes. The use of this material is promising for the development of revolutionary batteries that can operate in varying temperatures from low to very high. In the research, the researcher believes that the performance is better for the use of solid electrolytes for electric vehicles .
In particular, the new material is highly stable and will not burn if damaged. It is suitable for airplanes and other places where safety is important. It is also suitable for high-capacity applications such as electric vehicles, as it can be used at high temperatures and recharge rapidly. In addition, it can also be used in batteries, home appliances, and medical equipment.
We have not only discovered a Li-ion conductor with higher energy, longer lifetime and air stability, but also introduced a new type of superionic conductor with pyrochlore-type oxyfluoride, the researchers said in a statement. .
Exploration of the local structure surrounding lithium, their dynamic changes during operation and their potential as solid electrolytes for all-solid-state batteries are important areas for future research.
