Wang, Xiuli published the artcile3D ultraviolet polymerized electrolyte based on PEO modified PVDF-HFP electrospun membrane for high-performance lithium-sulfur batteries, Name: Pentaerythritol tetra(3-mercaptopropionate), the main research area is lithium sulfur battery gel polymer electrolyte nanofiber UV polymerization.
At present, the quasi-solid-state lithium-sulfur batteries (LSBs) assembled with sulfur cathode, gel polymer electrolyte (GPE) and Li anode have explored a novel prospect for substantial energy applications owing to the high energy d. and elevated security. In this work, we propose a 3D UV polymerized electrolyte, in which the inner substrate is the PEO modified PVDF-HFP electrospun membrane, and the hydrogen bonding effect plays a critical role in regulating the nanofiber diameter and membrane porosity. Simultaneously, outside coating is the in-situ UV polymerized pentaerythritol tetrakis-divinyl adipate (PETT-DA) layer, in which the carbonyl groups can effectively suppress the polysulfides shuttling. Consequently, the optimal electrolyte membranes with high porosity possess the high electrolyte uptake of 279.8%, ionic conductivity of 9.64 × 10-4 S cm-1 and Li+ transference number of 0.71 at 25 °C. Prominently, the assembled quasi-solid-state LSBs exhibit the stable coulombic efficiency of 99.5-100.0% over 300 cycles and good capacity retention of 87.1% after 300 cycles at 2C. More importantly, excellent thermal dimensional properties and mech. performances further provide great com. potentials for our synthesized 3D electrolyte membranes.
Electrochimica Acta published new progress about Battery anodes. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Name: Pentaerythritol tetra(3-mercaptopropionate).
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