Fabrication of single-ion conducting polymer-coated separators and their application in nonaqueous Li-O2 batteries

Lithium-Ion-Conducting Ceramics-Coated Separator for Stable Operation of Lithium Metal-Based Rechargeable Batteries

“…For the practical application of lithium metal anode, there have been many recent attempts to suppress the formation and growth of dead lithium and lithium dendrites. Examples include the development of new liquid electrolytes [ 4 , 5 , 6 , 7 , 8 ], electrolyte additives [ 9 , 10 ], functional separators [ 11 , 12 , 13 , 14 , 15 ], organic and inorganic solid-state electrolytes [ 16 , 17 , 18 , 19 , 20 , 21 ], artificial SEI layers [ 22 , 23 , 24 , 25 , 26 , 27 ], and 3D anode structures [ 28 , 29 , 30 , 31 ]. Among them, the modification of the commercial separator is a promising and scalable strategy for realizing lithium metal batteries with high energy density, such as Li-sulfur and Li-oxygen batteries.…”

Emergent electrochemical functions and future opportunities of hierarchically constructed metal–organic frameworks and covalent organic frameworks

“…This stability issue of the solid-electrolyte/ cathode interface is a key in the nonaqueous Li-O 2 batteries as well. 164 As already discussed in the previous section, the chemical stability of MOFs/COFs is important for the application as electrocatalysts as well because the thermodynamic potentials of the key electrochemical energy conversion reactions, such as the hydrogen evolution reaction (0 V vs. reversible hydrogen electrode; RHE) and oxygen evolution reaction (1.23 V vs. RHE), are located in the highly reductive or oxidative positions (Fig. 8), and of course overpotentials are not negligible but always considerable values.…”

Comparative Study of the Electrochemical Performance of Different Separators in Aprotic Li–O2 Batteries

“…On the other hand, electrolyte evaporation and decomposition result in battery performance degradation during cycling. ,, Optimization of the components of the battery is an effective way to solve these problems. − For example, highly active catalysts and a more stable electrolyte have obviously improved the battery performance. − A separator, as an indispensable component of a Li–O 2 battery, plays a rather important role that affects its electrochemical performance. It separates the cathode and anode, carries the electrolyte, and serves as a lithium-ion conductor. ,− However, unlike the lithium-ion battery, which has already formed a series of standard materials and mature techniques in manufacturing a battery, there is a lack of recognized standard materials in Li–O 2 battery characterization, especially the separator. At the present stage, there are actually several types of commonly used separators in the Li–O 2 battery research field.…”