Organosilicon‐Based Functional Electrolytes for High‐Performance Lithium Batteries

Abstract

Nowadays excessive consumption of fossil fuels due to population growth and industrial development induced serious energy and environmental crisis. To alleviate the ecological crisis and comply with the ever-increasing energy demand, developingThe electrolyte has been considered as a key factor toward higher energy density for Li-ion and Li-metal batteries. However, conventional electrolytes suffer from uncontrolled interfacial reactions and irreversible decomposition causing performance deterioration and potential safety hazard. Organosilicon compounds have attracted great interest as promising electrolyte components due to facile chemical modifications, low glass transition temperatures (T g ), superior chemical, and thermal stabilities. Considerable investigation efforts have been devoted to developing better overall performance of organosilicon-based electrolytes in the past few years. Herein, the recent research progress of organosilicon-based functional electrolytes for the development of liquid, gel, and solid state electrolytes in Li-ion and Li-metal batteries is summarized. Attention is devoted to various types of organosilicon such as silane, siloxane, polysiloxane, and polyhedral oligomeric silsesquioxanes in terms of molecular design, ionic conductivity, functions shown in batteries, thermal, chemical, electrochemical stability, safety, etc. The feasible strategies are also discussed that may promote the comprehensive electrochemical performances of organosilicon-based electrolytes in different types of electrolytes and batteries. Finally, the challenges facing organosilicon-based electrolytes and proposed their possible solutions are presented alongside promising development directions.

A Multifunctional Silicon‐Doped Polyether Network for Double Stable Interfaces in Quasi‐Solid‐State Lithium Metal Batteries

“…[42,43] It is consistent with the absorption peak of PTCD at 1050 cm −1 . [44,45] The results prove the successful synthesis of PTCD.…”

Perspectives on Improving the Safety and Sustainability of High Voltage Lithium‐Ion Batteries Through the Electrolyte and Separator Region

“…In recent years, multifunctional additives have been increasingly more popular. These CEIforming additives typically contain functional groups such as isocyanate (NCO), [97][98][99][100] silane derivatives (SiO), [101][102][103][104][105][106] sultones (SO), [88,[107][108][109][110][111] borates (BO), [112][113][114][115] or phosphorouscontaining groups, [116][117][118][119][120] which are capable of scavenging HF. Many of these CEI-forming additives can also promote SEI formation on the anode, serving multiple important functions in the cell.…”

Capacity-enhanced and kinetic-expedited zinc-ion storage ability in a Zn3V3O8/VO2cathode enabled by heterostructural design

“…1,2 While the demand for energy consumption is expected to significantly increase, the extensive use of LIBs will also be constrained by the lack of lithium resources, their high price and safety issues. 3,4…”

“…1,2 While the demand for energy consumption is expected to significantly increase, the extensive use of LIBs will also be constrained by the lack of lithium resources, their high price and safety issues. 3,4 Aqueous rechargeable batteries are emerging as a class of suitable substitutes for LIBs, which have great potential for stationary grid storage applications. In the past few years, numerous studies have concentrated on the exploitation of aqueous zinc ion batteries (ZIBs) due to their environmental friendliness, low cost, high ionic conductivity, and high energy density.…”