Tuning the electrolyte network structure to invoke quasi-solid state sulfur conversion and suppress lithium dendrite formation in Li–S batteries

Boosting Superior Lithium Storage Performance of Alloy‐Based Anode Materials via Ultraconformal Sb Coating–Derived Favorable Solid‐Electrolyte Interphase

“…[27] However, for most alloy anode materials, continuous parasitic reactions between pulverized alloy particles and solvent molecules lead to thickening of the SEI and depletion of the electrolyte, eventually resulting in battery failure. It results from the decomposition of electrolyte components (salt ions, solvents molecules, and functional additives), which forms a passivation layer on the surface of electrode materials.…”

“…It results from the decomposition of electrolyte components (salt ions, solvents molecules, and functional additives), which forms a passivation layer on the surface of electrode materials. [27][28][29][30] Recently, considerable effort has been focused on using high concentration electrolytes to restrain the decomposition of the solvent molecules. A compact, thin, and passivating SEI is necessary to enable the long-term operation of batteries beyond the thermodynamic limits of electrolytes, as is the case for the commercial graphite anode.…”

“…The constitution and structure of an SEI, generally including carbonaceous (e.g., (CH 2 OCO 2 Li) 2 , ROCO 2 Li, Li 2 CO 3 , and polycarbonates) and noncarbonaceous (e.g., LiF, Li 2 O, LiOH) components, are dependent on the electrolyte. [27,28,30] However, there are still some disadvantages for the concentrated electrolyte, including precipitation of the Li salts at low temperature, difficulty for wetting cell separators and thick electrodes, and higher cost. The decomposition of solvent molecules is the most common pathway for the formation of the SEI.…”

Key Aspects of Lithium Metal Anodes for Lithium Metal Batteries

“…Various surface‐sensitive techniques, such as FT‐IR, Raman spectroscopy, in situ cryogenic electron microscopy and in situ AFM are frequently used to investigate the surface chemistry and morphological changes in SEI during cell operation . Similarly, operando XRD, impedance spectroscopy, operando X‐ray photoelectron spectroscopy, XAS, and NMR can be used to probe phenomenon such as, phase transformation volumetric expansion of anode, chemical composition, and local structural and chemical evolution of the SEI layer . Further details about the advanced characterization of SEI can be found in recently published reviews …”

A Selection Rule for Hydrofluoroether Electrolyte Cosolvent: Establishing a Linear Free‐Energy Relationship in Lithium–Sulfur Batteries

“…[18,19] Because of their low solvating ability,H FEs are exceptionally versatile as electrolyte cosolvents.T hey offer several important advantages: 1) enhanced oxidative stability of electrolytes, [10][11][12] 2) they serve as excellent thinning reagents for reducing the viscosity of electrolytes, [20][21][22] and 3) they enable the construction of localized concentrated electrolytes,which are highly useful in lithium-metal batteries. [26][27][28][29][30][31][32][33][34] Despite the extensive application of HFEs,t he effect of their intricate molecular structure on electrochemical behavior has hardly been studied. [26][27][28][29][30][31][32][33][34] Despite the extensive application of HFEs,t he effect of their intricate molecular structure on electrochemical behavior has hardly been studied.…”