Stabilizing Solid Electrolyte-Anode Interface in Li-Metal Batteries by Boron Nitride-Based Nanocomposite Coating

Abstract

4 ) 3 (LATP) solid electrolyte is inexpensive, light, and highly ionically conductive but unstable against Li metal. To avoid the side reactions between LATP and Li metal, chemically inert and mechanically robust BN nanocoating was deposited onto LATP solid electrolyte as a stable interface to enable stable cycling in Li-metal batteries. This strategy can be applied to various unstable solid electrolytes and extend lifetime of solid-state Li-metal batteries with high energy density.

Design of a Multifunctional Interlayer for NASCION‐Based Solid‐State Li Metal Batteries

“…b) Voltage profiles of symmetric cells with LAGP‐IL interlayer operated at a high current density, 1.0 mA cm −2 , and a high capacity density of 1.0 mAh cm −2 . c) Comparison of cycling performance of symmetric cell with LAGP‐IL interlayer with that of recent publications [ 23,25–28,50–57 ] (a‐ref. [50], b‐ref.…”

Solid electrolyte interphase formation between the Li0.29La0.57TiO3solid-state electrolyte and a Li-metal anode: anab initiomolecular dynamics study

“…Solid state batteries (SSB) 10,11 have been proposed as potential solutions to develop high energy density batteries, i.e., the use of a solid-state electrolyte, instead of the traditional liquid electrolyte used in a lithium-ion battery (LIB). [12][13][14][15] However, substituting only the electrolyte does not change the principle of operation of a SSB; still it is very similar to a LIB. Even though the principle of operation is the same for a SSB compared with a LIB, there are structural differences such as the no need of a separator in a SSB, 16 which is needed with liquid electrolytes to prevent electronic short-circuits between electrodes.…”

A novel organic/inorganic composite solid electrolyte with functionalized layers for improved room‐temperature rate performance of solid‐state lithium battery

“…As the capacity and safety requirements of electronic equipment and electric automobiles increase, advanced energy storage technology has become more urgent, in which solid‐state lithium batteries (SSBs) have potential development prospects due to their high theoretical energy density and safety. However, the low room‐temperature (RT) ionic conductivity of solid electrolyte (SE) and poor interface compatibility between electrodes and electrolyte are always the crucial problems to restrain the rate performance of SSBs …”

“…To solve the interface problem of SE, many works have been focused on the modification of interfacial transition layers. Inorganic oxides, carbon, fluoride, nitride, polymer, and their composites were successively applied to Li anodes, showing good results in inhibiting Li dendrite growth and regulating Li uniform deposition. However, it is a difficulty to make modification directly on the surface of lithium metal because of its high vivacity .…”

“…However, the low roomtemperature (RT) ionic conductivity of solid electrolyte (SE) and poor interface compatibility between electrodes and electrolyte are always the crucial problems to restrain the rate performance of SSBs. [5][6][7][8] Compared with inorganic SE and polymer SE, organic/inorganic composite solid electrolyte (CSE) is expected to be the preferred electrolyte material for high-performance Li-ion SEs. [9][10][11][12][13] Organic/inorganic CSE combines the advantages of inorganic and organic components and synergistically improves the mechanical and electrochemical performance and provides good interface compatibility.…”