Dual-Functional Electrolyte Additives for Long-Cycling Lithium-Ion Batteries

A recent study published in ACS Applied Materials & Interfaces explores the use of dual-functional electrolyte additives to improve the cycling performance of lithium-ion batteries. The researchers focused on ecofriendly designed carbonate derivatives and their potential as electrolyte additives.

Lithium-ion batteries are widely used for portable electronic devices and electric vehicles due to their high energy density. However, repeated charging and discharging cycles can lead to the degradation of battery performance, limiting their lifespan. This degradation is often caused by the formation of solid-electrolyte interphase (SEI) layers, which can impede the transport of lithium ions.

To overcome this challenge, the researchers investigated the use of dual-functional electrolyte additives. These additives serve two purposes: first, they improve the stability of the SEI layer, reducing its growth during cycling; and second, they enhance the overall electrolyte properties, such as Li+ ion conductivity and electrochemical stability.

The study found that the ecofriendly designed carbonate derivatives exhibited excellent performance as dual-functional electrolyte additives. They effectively suppressed the growth of the SEI layer, resulting in improved long-term cycling stability of lithium-ion batteries. Furthermore, these additives enhanced the conductivity of the electrolyte, leading to enhanced battery performance.

This research provides valuable insights into the development of advanced electrolytes for long-cycling lithium-ion batteries. By utilizing dual-functional electrolyte additives, the researchers have demonstrated a promising approach to improve the performance and lifespan of these batteries.

Sources:
– Han, J.-G.; et al. “Dual-Functional Electrolyte Additives toward Long-Cycling Lithium-Ion Batteries: Ecofriendly Designed Carbonate Derivatives.” ACS Applied Materials & Interfaces, 2020.
– Mindemark, J.; et al. “Beyond PEO—Alternative host materials for Li+-conducting solid polymer electrolytes.” Progress in Polymer Science, 2018.
– Xu, H.; Xie, J.; Liu, Z.; Wang, J.; Deng, Y. “Carbonyl-coordinating polymers for high-voltage solid-state lithium batteries: Solid polymer electrolytes.” MRS Energy & Sustainability, 2020.
– Notredame, B.; Gauthy, F.; Finsy, V.; Gohy, J.-F. “Solid Polymer Electrolytes Based on Phosphonate and Cyclocarbonate Units for Safer Full Solid State Lithium Metal Batteries.” Journal of Materials Chemistry A, 2022.