A high power density solid electrolyte based on polycaprolactone for high-performance all-solid-state flexible lithium batteries

Poly(Ether-Ester)-Based Solid Polymer Electrolytes with High Li-Ion Transference Number for High Voltage All-Solid-State Lithium Metal Batteries

“…With respect to the SEI generated on the surface Li metal based on PDCL40-SPE, there remain the decomposition parts both of Li salt and polymer, where the polymer-enhanced SEI could inhibit the uncontrolled growth of Li dendrite effectively (Scheme ). , More importantly, a higher content of LiF (an electrical insulator with the advantages of low diffusion energy, high surface energy and unavailable at the crossing of electrons to SEI layer) is detected in the F 1s spectra of PDCL-SPE comparing to PCL-SPE and PDXO-SPE, which should facilitate surface diffusion of Li + much easier for PDCL-SPE during electrodeposition. − Therefore, it promotes the formation of stable SEI and effectively inhibits the growth of lithium dendrites in comparison with PCL-SPE and PDXO-SPE, which is consistent with the SEM characterizations. In the meantime, the LiF-rich and polymer-enhanced SEI layer can optimize the behavior of Li deposition and prolong the lifespan of Li anodes.…”

Exploring High Li+ Transference Number Solid-State Electrolytes Based on a Poly(ε-caprolactone) Polymer Matrix with Efficient Lithium Salt Dissociation for Applications in Lithium-Metal Batteries

“…37−41 This high t Li+ indicates an excellent Li-ion-dominant conductive behavior arising from the high Li salt dissociation in the PCL-based CPEs, and excellent rate and cycle performances of LMBs during the charge and discharge process are to be expected. 42 On account of the high t Li+ value of CPE-LLZO, the rate and cycling performances of the CPE were explored. As shown in Figures 3a and S10, the discharge capacities of the LFP//CPE-Z40//Li batteries at the rates ranging from 0.1 to 1.0C are 144.8, 140.3, 137.9, 136.5, and 134.9 mAh•g −1 at 60 °C.…”

Recycling of All‐Solid‐State Li‐ion Batteries: A Case Study of the Separation of Individual Components Within a System Composed of LTO, LLZTO and NMC**

“…Single element ICP-MS standards of 1 g L À 1 Li + , Al 3 + , Sc 3 + , Ho 3 + , Zr 4 + (all Merck Millipore, Germany, c(Zr 4 + ) = 10 g L À 1 ), Mn 2 + , Co 2 + , Ni 2 + (all Sigma-Aldrich, USA), La 3 + , Ta 5 + (all Alfa Aesar, USA) and Ti 4 + (VWR, USA) were used. The measured isotopes were 7 Li, 27 Al, 47 Ti, 55 Mn, 59 Co, 60 Ni, 90 Zr, 139 La, 181 Ta and as internal standards 45 Sc and 165 Ho. Except for 7 Li and 90 Zr, all isotopes were measured using He as collision gas to avoid possible disturbances.…”

“…The measured isotopes were 7 Li, 27 Al, 47 Ti, 55 Mn, 59 Co, 60 Ni, 90 Zr, 139 La, 181 Ta and as internal standards 45 Sc and 165 Ho. Except for 7 Li and 90 Zr, all isotopes were measured using He as collision gas to avoid possible disturbances. The detector dwell time was 100 μs and repetition was three times.…”

“…[4] Within the ASSBs, both organic and inorganic electrolytes are of interest. As organic electrolytes, polymer electrolytes based on polyethylene oxide (PEO), [5] polyacrylonitrile (PAN), [6] polycaprolactone (PCL), [7] poly(methyl methacrylate), [8] have gathered wide spread interest due to favorable mechanical properties and partial self-healing capabilities. [9] On the other hand, inorganic electrolytes [10] based on sulfides [11] and oxides are of interest due to their high ionic conductivity and high lithium ion transference number.…”