High-stability core–shell structured PAN/PVDF nanofiber separator with excellent lithium-ion transport property for lithium-based battery

Squaraine-linked zwitterionic COF modified LLZTO nanoparticles for high performance polymer composite electrolytes in Li–S batteries

“…A CR2032 type coin cell consisting of two Li metal disk electrodes (Li|Electrolyte| Li) was assembled in an argon-filled glovebox. The resistance before polarization (R 0 ) and that after polarization (R s ) were acquired by AC impedance in the frequency range of 10 −1 to 10 6 Hz at an amplitude of 10 mV. The current value before polarization (I 0 ) and the steady-state current value (I s ) were recorded with a voltage of 10 mV (ΔV) under 60 °C, respectively.…”

“…[2][3][4] Extensive strategies like developing inorganic and organic solid-state electrolytes (SSEs) have been proposed to address the issue. 5 Unlike the brittle ceramic type SSEs, polymer solid electrolytes (e.g., polyacrylonitrile (PAN), 6,7 polyethylene oxide (PEO), 8,9 tetra(ethylene glycol dimethyl ether), 10 and polyvinylene carbonate (PVCA) 11 ) exhibit fairish interfacial compatibility, considerable mechanical flexibility and electrochemical stability, which is considered promising for SSEs. However, they suffer from crystallization issues and inferior Li + conduction properties.…”

Enhancing the β Phase of Poly(vinylidene fluoride) Nanofibrous Membranes for Thermostable Separators in Lithium-Ion Batteries

“…In general, the greater the polarity, the higher the dielectric constant, and the high dielectric constant with strong electron donor ability is favorable to the dissociation of the electrolyte salts . Although commercial polyolefin microporous nanofiber membranes show good chemical stability and mechanical strength, their low porosity leads to poor wettability with electrolytes and high resistance, which restrict the rate performance and cycling stability of lithium-ion batteries (LIBs). , …”

“…5 Although commercial polyolefin microporous nanofiber membranes show good chemical stability and mechanical strength, their low porosity leads to poor wettability with electrolytes and high resistance, which restrict the rate performance and cycling stability of lithium-ion batteries (LIBs). 6,7 Poly(vinylidene fluoride) (PVDF, −[−CH 2 −CF 2 −] n −) attracts extensive attention for application in battery separators owing to its excellent dielectric properties. 8 In general, the macromolecules of PVDF have five different crystalline phases of α, β, γ, δ, and ε, among which the α crystal with the TGTG' configuration is the most common crystalline phase of PVDF.…”

A single-crystalline Co3O4 nanoparticle-assembled three-dimensional chain as an ultra-stable magnesium-ion battery cathode at different temperatures

“…1 Lithium-ion (Li-ion) batteries are the first choice of energy-storage system; however, due to their safety issues and the high cost of Li, the development of lithium-ion batteries is restricted. 2,3 The exploration of cheap and safe batteries is urgently required. Magnesium-ion (Mg-ion) batteries possess a high theoretical capacity (3833 mA h cm −3 and 2205 mA h g −1 ), low-cost Mg resources, and stability without Mg dendrites, etc.…”