Scalable Integration of High Sensitivity Strain Sensors Based on Silicon Nanowire Spring Array Directly Grown on Flexible Polyimide Films

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

The growth and integration of position-controlled, morphology-programmable silicon nanowires (SiNWs), directly upon low-cost polymer substrates instead postgrowth transferring, is attractive for developing advanced flexible sensors logics. In this work, a low temperature SiNWs at only 200 °C has been demonstrated, the first time, polyimide (PI) films, via planar solid-liquid-solid (IPSLS) mechanism. with diameter ∼146 nm can be grown into precise locations on PI as orderly array preferred elastic geometry. Strain sensor array, built these spring-shape integrated PI, achieves gauge factor (GF) ∼90, sustains large stretching strains up to 3.3% (with 1.5 mm radius) endures over 30,000 cycles. attached finger monitor movements are also successfully showing high sensitivity superior mechanical reliability, particularly suited wearable health applications.

Language: Английский

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Ultra-thin, Scalable, and MOF Network-Reinforced Composite Solid Electrolyte for All-Solid-State Lithium Metal Batteries

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 124009 - 124009

Published: March 1, 2025

Language: Английский

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Flame-Retardant Gel Electrolytes Reinforced by PVDF-HFP/Ceramic Nanofiber Mat for Lithium Metal Batteries

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Gel polymer electrolytes (GPEs) have become a viable substitute for liquid (LEs) in lithium metal batteries (LMBs) their excellent ionic conductivity and enhanced interfacial compatibility. However, as semisolid electrolytes, GPEs face significant challenges, including low mechanical strength flammability. Herein, we fabricate porous poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) mat (PHL) enriched with oxide ceramics support matrix, fluorine-rich compounds are incorporated by situ polymerization to construct flame-retardant cross-linked GPE network improved The PHL-based (PHL-GPE) exhibits ultralong cycling stability of over 2000 h metal. When applying Li|PHL-GPE|LiFePO4 (LFP) cells, the PHL-GPE enables stable 500 cycles capacity retention 92.3% under high current density (1C) active material mass loading (11.25 mg cm–2). This study provides an approach address key challenges commercialization LMBs.

Language: Английский

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Research Progress of Ionic Liquid Based Solid Electrolyte

Open Journal of Natural Science, Journal Year: 2025, Volume and Issue: 13(03), P. 432 - 438

Published: Jan. 1, 2025

Language: Английский

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Multifunctional Subnanowires Modulating In Situ Polymerization for High-Voltage Solid-State Batteries

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 29, 2025

In situ polymerized poly(1,3-dioxolane) (PDOL) electrolytes endow excellent interfacial contact and satisfactory compatibility in lithium metal batteries (LMBs). However, their limited oxidative stability hinders with high-voltage cathodes. Herein, an effective molecular weight modulation-induced strategy via multifunctional subnanowires (SNWs) was proposed to realize the superior of PDOL narrow distribution (MWD). Specifically, ring-opening polymerization DOL promoted by oxygen vacancies (Ov) on SNWs, which enhanced monomer conversion rate. Simultaneously, speed during process regulated weak adsorption monomers induced protonated oleylamine (PO). Furthermore, dual Lewis acid sites (Ov PO) SNWs facilitate salt dissociation, releasing more movable Li+ for transport. Thus, SNWs-induced MWD 1.42 exhibit remarkable exceeding 5.1 V while achieving a lithium-ion transference number 0.81. Consequently, assembled NCM811||Li cells maintain stable operation 100 cycles at 4.5 capacity retention rate 89.2%. This research first modulates using enhance ability, presenting unique inspire development high-performance LMBs.

Language: Английский

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Lanthanum and Oxygen Co-doping of Lithium Argyrodite for Enhanced Humid Air Stability and Lithium Metal Compatibility

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 146619 - 146619

Published: June 1, 2025

Language: Английский

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