A single-ion gel polymer electrolyte based on polyimide grafted with lithium 3-chloropropanesulfonyl (trifluoromethanesulfonyl) imide for high performance lithium ion batteries

Abstract

With high lithium-ion transfer number (t Li+), single-ion gel polymer electrolytes can inhibit the growth of lithium dendrite and improve cycling performance effectively, which have attracted much attention. Due to...

Lignin Derived Ultrathin All‐Solid Polymer Electrolytes with 3D Single‐Ion Nanofiber Ionic Bridge Framework for High Performance Lithium Batteries

“…The preparation of lithium 3‐chloroproanesulfonyl (trifluoromethanesulfonyl)imide (LiCPSI) was based on our previous work, [ 28 ] and the synthesis method of LiCPSI was shown in the Supporting Information in detail. FT‐IR characterization illustrated the successful synthesis of LiCPSI.…”

“…As shown in Figure S2 (Supporting Information), a symmetric absorption peak corresponding to ─ S ─ N ─ (1196 cm −1 ) and a symmetric absorption peak corresponding to ─ S ─ N ─ S ─ (1117 cm −1 ) appeared on the FTIR spectra of L‐Li, which indicated the success of grafting reaction. [ 28 ]…”

An Ultrahigh Modulus Gel Electrolytes Reforming the Growing Pattern of Li Dendrites for Interfacially Stable Lithium‐Metal Batteries

“…Figure 5e compares the room-temperature cycling stability of LFP||Li cells assembled with gel electrolytes which are reported in recently published works. [17,24,25,[27][28][29][32][33][34][35][36][37][38][39][40] Relying on the exquisite topology of the supporting skeleton, the PLF@GPE rendered the best-in-class capacity retention after long-term cycling tests.…”

Solid-State, Single-Ion Conducting, Polymer Blend Electrolytes with Enhanced Li+ Conduction, Electrochemical Stability, and Limiting Current Density

“…However, the high crystallinity of PEO below the melting temperature ( T m,PEO ≈ 62 °C for 10–20 kg/mol) leads to a significant reduction in conductivity near room temperature . There have been numerous studies focused on disrupting crystallinity in PEO using PEO-grafted polymethacrylates , and PEO-based copolymers. − For instance, poly­( oligo -oxyethylene methyl ether methacrylate) (POEM), with its ether-oxygen side chains, is promising in terms of significantly improved room-temperature conductivity vs analogous salt-doped PEO systems when the appropriate side-chain lengths are employed. , Other approaches also have been developed to decrease the crystallinity of PEO, including nanoparticle addition, − polymer blending, , and cross-linking. − Additionally, small-molecule plasticization − and low- T g segment introduction − have been shown to accelerate segmental relaxation, and polymer architecture modification can effectively alter the Li + -polymer coordination ,− and/or the Li + solvation-site connectivity. ,− Although improved overall conductivities have been achieved, the significant anion motion in these PEO-based electrolytes results in low t Li+ s (≈0.2) , and therefore relatively modest Li + conductivities (∼10 –4 S/cm at 60–100 °C).…”