Surface-modified boron nitride as a filler to achieve high thermal stability of polymer solid-state lithium-metal batteries

Abstract

Solid polymer electrolytes with low density, low cost and excellent processability have been the ideal choice for researchers. However, their thermal stability and mechanical properties are so inadequate that it...

Strategies and characterization methods for achieving high performance PEO-based solid-state lithium-ion batteries

“…Min et al added h-BN nanosheets as fillers into the PEO-based electrolyte (PLSB). 82 The decomposition temperature of the h-BN and SiO 2 modified solid electrolyte was elevated to around 450 °C (much higher than that of the PEO/LiTFSI, around 366 °C). When exposed at 150 °C, the commercial Celgard 2300 membrane contracted quickly while the as-prepared PLSB membrane maintained its original structure.…”

Research progress in stable interfacial constructions between composite polymer electrolytes and electrodes

“…The organic fillers in CPEs can also participate in the formation of a CEI layer on the surface of the cathode to further improve the stability of the cathode–CPE interface. 91,92 On this basis, the high voltage stability of the electrolyte is further improved by combining the modification of polymers and lithium salts. Firstly, a polymer with high voltage stability on the cathode is needed to stabilize the cathode–CPE interface in the charged state.…”

A review on modified polymer composite electrolytes for solid-state lithium batteries

“…The prepared BNNSs attached to the outer layer can provide a strong protective layer for the polymer electrolyte, effectively inhibit the growth of lithium dendrites, and make the contact between the electrolyte and electrode more stable, resulting in good cycling stability of Li/BNNSs-PEO/LFP. On the basis of this, Zhang et al 85 further modified BNNSs to obtain the SiO 2 @BNNS composite powder. Then the mixed solution of PEO, lithium salt and SiO 2 @BNNS was obtained by a traditional casting method.…”