Room-temperature all-solid-state lithium metal batteries based on ultrathin polymeric electrolytes

Abstract

Nanoconfinement of a PEO–PPO–PEO copolymer in an ultrathin PE membrane leads to high segmental mobility, which enables fast ion conduction.

Poly(vinylidene fluoride-co-hexafluoropropylene)-Based Solid Polymer Electrolyte Incorporated with UiO-66 for Lithium Metal Batteries

“…These results affirm the successful development of a stable solid-state electrolyte that is capable of operating at high current densities. Moreover, the electrochemical performance of Li metal and LiFePO 4 cathode batteries using UPH-SPE is compared to that of other works at 0.5 C and 25 °C (Figure S7 of the Supporting Information), − demonstrating our superior electrochemical performance.…”

Dendritic sulfonated polyethersulfone nanofiber membrane@LaCoO3 nanowire-based composite solid electrolytes with facilitated ion transport channels for high-performance all-solid-state lithium metal batteries

“…In addition, with the addition of LaCoO 3 nanowires, the conductivities first enhance and then decrease, in which the T-SPES-PEO-3LaCoO 3 electrolyte generates the highest conductivity of 1.86 × 10 −4 S cm −1 at 30 °C, which is 2 times the conductivity of the PEO electrolyte (3.98 × 10 −5 S cm −1 at 30 °C). The reason for this result is that a certain amount of LaCoO 3 nanowires can not only effectively promote the dissociation of lithium salts via the Lewis acid–base action to generate a large number of free Li + , 47 but also the oxygen vacancies possessed by LaCoO 3 can also attract anions and release Li + . 28 Furthermore, enough LaCoO 3 nanowires are also beneficial to create more 3D organic–inorganic interfaces, resulting in a 3D Li + fast transport pathway.…”

Synthesis of stretchable hybrid copper films via nanoconfinement

“…The PE membranes were prepared using the methods developed in our group. 19,20,23 Firstly, gel lms were prepared using a HAAKE twin-screw extruder with raw PE material (GUR 4022, Mw ∼3.5 × 10 6 kg mol −1 ) and petrolatum (Protopet 1S). Then these gel lms were further stretched with a spontaneous twodirection method.…”