Northeast Normal University 
The battery assembled with LFP as the positive electrode was charged and discharged at 30 oC at a rate of 0.2 C. The voltage was between 2.5 V and 3.8 V. The battery discharge specific capacity was 148.1 mAh g-1, and the capacity was after 130 cycles. The retention rate is 98.8%, and the Coulomb efficiency is always above 99.5%, proving that this electrolyte has good electrochemical stability for lithium metal. In addition, NCM622 batteries were also assembled to test their cycle performance under high voltage. At 0.1 C, the voltage was between 2.8 V and 4.3 V. The discharge specific capacity of the battery was 176.0 mAh g-1. After 100 cycles, the Coulomb The efficiency is about 95%. The design of this double-layer electrolyte provides an ideal strategy to solve the interface problem of high energy density lithium metal batteries .
(Enabling stable interphases via In-Situ Two-Step Synthetic Bilayer Polymer Electrolyte for Solid Li Metal Batteries, Inorganics)
