Micro Area Interface Wetting Structure with Tailored Li⁺-Solvation and Fast Transport Properties in Composite Polymer Electrolytes for Enhanced Performance in Solid-State Lithium Batteries

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(3), P. 3489 - 3501

Published: Jan. 12, 2024

To satisfy the demand for high safety and energy density in storage devices, all-solid-state lithium metal batteries with solid polymer electrolytes (SPE) replacing traditional liquid separators have been proposed are increasingly regarded as one of most promising candidates next-generation systems. In this study, poly(vinylidene fluoride)-hexafluoropropylene/lignosulfonic acid (PVDF-HFP/LSA) composite electrolyte (CPE) membranes a micro area interface wetting structure were successfully prepared by incorporating LSA into PVDF-HFP matrix. The enhanced interaction between polar functional group C═O N-methylpyrrolidone (NMP) hinders evaporation solvent NMP, thus creating structure, which offers flexible region chain segment movement enlarging amorphous zone PVDF-HFP. From results IR Raman spectroscopy, it was found that presence induced unique ion transport channels created massive aggregated pair (AGG) contact (CIP) cluster structures composed Li+ multiple TFSI– and, at same time, effectively reduced crystallinity electrolyte, hence further contributing to diffusion. As result, rate 2 C, Li|CPE-15|LiFePO4 solid-state battery delivers an initial discharge-specific capacity 134.9 mAh g–1 maintains stability retention 84% during 400 charge–discharge cycles while Li|CPE-0|LiFePO4 fails after only few rate.

Language: Английский

---

How viable are MXenes? Recent developments of MXene synthesis and its application in solid-state electrolytes

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110868 - 110868

Published: Feb. 14, 2024

Language: Английский

---

Tailoring Stable PEO‐Based Electrolyte/Electrodes Interfaces via Molecular Coordination Regulating Enables 4.5 V Solid‐State Lithium Metal Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 13, 2024

Abstract Solid‐state lithium metal batteries (SSLMBs) with poly (ethylene oxide) (PEO)‐based electrolytes have increasingly become one of the most promising battery technologies due to high energy density and safety. However, adverse electrode/electrolyte interface compatibility issues hinder further application. Herein, a PEO‐based composite solid electrolyte excellent anode cathode interfacial is designed via coordination modulation strategy induced by difluorobis(oxalato)phosphate (DFBOP). By utilizing this electrolyte, robust inorganic‐rich interphase involving LiF, Li x PO y F z , P─O components in situ generated on (Li) LiNi 0.8 Co 0.1 Mn O 2 (NCM811) surfaces forceful among PEO, bis(trifluoromethanesulphonyl)imide, DFBOP subsequent adjustment front orbital levels. It contributes homogeneous deposition an effective impediment PEO oxidation decomposition at voltage, promoting superior stability. Consequently, Li‐symmetric cells modified can achieve stable cycle over 7000 h 0.2 mA cm −2 . Specially, unique organic–inorganic interpenetration network structure enables 4.5 V Li/NCM811 steadily 100 cycles, discharge capacity 215.4 mAh g −1 initial coulombic efficiency 91.23%. This research has shed light design from perspective regulation construct high‐performance SSLMBs.

Language: Английский

---

Advancements and Challenges in Organic–Inorganic Composite Solid Electrolytes for All-Solid-State Lithium Batteries

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 20, 2024

To address the limitations of contemporary lithium-ion batteries, particularly their low energy density and safety concerns, all-solid-state lithium batteries equipped with solid-state electrolytes have been identified as an up-and-coming alternative. Among various SEs, organic-inorganic composite solid (OICSEs) that combine advantages both polymer inorganic materials demonstrate promising potential for large-scale applications. However, OICSEs still face many challenges in practical applications, such ionic conductivity poor interfacial stability, which severely limit This review provides a comprehensive overview recent research advancements OICSEs. Specifically, influence fillers on main functional parameters OICSEs, including conductivity, Li

Language: Английский

---

Polyester-enhanced poly (cyclic carbonate-fluoride)-based polymer electrolyte for stable circulating solid lithium batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151780 - 151780

Published: April 29, 2024

Language: Английский

---