Design of a multi-functional gel polymer electrolyte with a 3D compact stacked polymer micro-sphere matrix for high-performance lithium metal batteries

Abstract

Lithium metal batteries (LMBs) are considered as promising high energy density batteries. However, they are still suffering from poor cyclability due to the instability of solid electrolyte interphases (SEIs) and...

Inorganic Filler Enhanced Formation of Stable Inorganic‐Rich Solid Electrolyte Interphase for High Performance Lithium Metal Batteries

“…Thanks to the porous gel structures and stable electrode/electrolyte interphases, enabling small concentration polarizations and low Li + diffusion activation energies, the GPEbased full-cells exhibit much improved rate performances. [50] This point can be further confirmed with voltage hysteresis of galvanostatic voltage profiles recorded for the three full-cells at increasing C-rates, as shown in Figure S17 (Supporting Information). Noticeably, unlike the (PS-0.5)-based full-cell, which shows the smallest voltage hysteresis of only 219 mV at 2 C, the LE-based and (P-1.5)-based full-cells exhibit significantly higher polarization voltages of 364 and 270 mV, respectively.…”

In situ Synthesis of Gel Polymer Electrolytes for Lithium Batteries

“…[24] A novel densely-packed multifunctional GPE by in situ copolymerization of pentaerythritol tetraacrylate (PETEA) and 2-hydroxyethyl acrylate (HEA) via a thermal initiation method (Figure 5a). [25] The self-polymerization of PETEA formed randomly stacked polymer skeleton. In contrast, copolymerized GPEs constructed a 3D polymer microsphere network structure, owing to the strong hydrogen bonding between the hydroxyl groups on the end of polymer chains.…”

“…Replacing liquid electrolytes with in situ GPEs can efficiently alleviate the shuttle effect of polysulfides (Figure 16a). [14c,26] By tailoring crosslinking structure [67] and polar functional groups, [25] GPEs could barrier polysulfide diffusion and capture the polar sulfur discharge products. Such Li-sulfur battery exhibited low interfacial resistance, high rate capacity (601.2 mAh/g at 1C) and improved capacity retention than those with liquid electro-lytes (Figure 16b).…”

Anin situformed copolymer electrolyte with high ionic conductivity and high lithium-ion transference number for dendrite-free solid-state lithium metal batteries

“…18 Up to now, PEs synthesized through an in situ polymerization method have been widely reported, including poly(vinylene carbonate) (PVC), 19 poly(methyl methacrylate) (PMMA), 20 poly-tetrahydrofuran (PTHF), 21 poly(triethylene glycol diacrylate) (PTEGDA), 22 poly(1,3-dioxolane) (PDOL) 23 and poly(trimethylpropane triacrylate) (ETPTA) 24 -based PEs. To further improve the interfacial compatibility, mechanical properties and the overall electrochemical performances of in situ polymerized PEs and SSBs, the strategies including integrations of inorganic llers, 24,25 making crosslinking polymers and copolymers, [26][27][28] and introducing functional groups into the polymer chains 19,29,30 have also been reported.…”