High ionic conductivity PEO-based electrolyte with 3D framework for Dendrite-free solid-state lithium metal batteries at ambient temperature

Interface Manipulation of Composite Solid Polymer Electrolyte with Polydopamine to Construct Durable and Fast Li+ Conduction Pathways

“…The surface of CPE exhibits wrinkled structures as visualized in Figure 5a, which are formed due to the affected combination behavior of PEO polymers in the presence of the Co 3 O 4 @PDA filler during solvent evaporation. 28 No obvious agglomeration is detected on the CPE surface, implying that the Co 3 O 4 @PDA filler is evenly distributed within the CPE. The cross-sectional image in Figure 5b discloses that the thickness of the CPE membrane is around 100 μm, and the EDX mapping analysis confirms the homogeneous distribution of LiClO 4 and Co 3 O 4 @PDA filler in the CPE (Figure 5c).…”

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

“…Gao et al investigated the anion (TFSI − ) vibration of the PEO-based electrolyte with the Raman spectrum. 86 The relative quantity of free TFSI − (lithium salt association) and ion pair (solvated LiTFSI) can be obtained after Raman peak fitting and semi-quantitative estimation. The free TFSI proportion in the prepared PEO-ANF-20LLZO electrolyte is as high as 96.3%, leading to the highest Li + -transference number and lithium conductivity.…”

Advances in Nanofibrous Materials for Stable Lithium-Metal Anodes

“…To further improve the comprehensive performance of SPEs, the researchers prepared composite polymer electrolytes (CPEs) by adding inorganic nanoparticle fillers into the polymer matrix. Inorganic fillers can be divided into two categories: One is inert fillers without lithium-conducting function, including Al 2 O 3 , SiO 2 , TiO 2 , BaTiO 3 , and so on; − and one is active fillers with lithium-conducting function, whose room temperature ionic conductivity is much higher than that of polymers, including LLTO, Li 7 La 3 Zr 2 O 12 (LLZO), LISICON, NASICON, and so on. − These fillers have effects on the Li + migration number, electrochemical stability window, and mechanical properties of CPEs. The current general view is that inorganic particle fillers can reduce the crystallinity of polymers and promote the dissociation of lithium salts, thereby increasing the ionic conductivity of polymers.…”