Engineering CoN4 and FeN4 Dual Sites with Adjacent Nanoclusters on Flexible Porous Carbon Fibers for Enhanced Electrocatalytic Oxygen Reduction and Evolution DOI
Zhe Lü, Zhe Wang, Zhenbei Yang

et al.

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

Published: Dec. 11, 2024

Abstract Dual‐atom catalysts (DACs) possess tunable electronic structures and efficient atom utilization, making them highly promising for catalyzing the oxygen reduction reaction/oxygen evolution reaction (ORR/OER). However, achieving high catalytic activity stability both ORR OER in DACs remains a challenge. Herein, flexible membrane of porous carbon fiber anchored with atomically scattered CoN 4 /FeN dual sites adjacent Co 2 Fe /Fe 5 nanoclusters (Co, Fe‐DACs/NCs@PCF) is synthesized. The local geometry structure sites, which act as centers ORR/OER, are finely regulated by neighboring nanoclusters. This unique imparts Co, Fe‐DACs/NCs@PCF exceptional durability toward outperforming performance single‐atom containing only or FeN well commercial Pt/C RuO catalysts. Zinc–air battery employing cathode exhibits outstanding stability, maintaining cyclability over 1500 h, + air cathode. Theoretical calculations highlight distinct synergies between (Co ) clusters (CoN optimize coupling strength Fe(Co)─OH at potential‐determining steps thus improve (OER) kinetics. study lays theoretical practical foundation rational design heterostructure featuring coexisting within fibers.

Language: Английский

Regulating Contact Electrification and Charge Retention Capability With Metal–Organic Frameworks in Triboelectric Nanogenerator for Self‐Powered Sewage Treatment DOI Open Access
Xiao Sun,

Liting Dong,

Jianhua Liu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract The harvesting of ocean wind energy for triboelectric nanogenerators (TENGs) is greatly influenced by the contact electrification (CE) capability, charge retention characteristics, and harsh marine environment. In this work, four highly water‐stable metal–organic frameworks, including MIL‐101(Cr), UiO‐66, ZIF‐8, MOF‐303, are doped into PVA/Ta layers to modulate their CE retention, resistance environments. capability compared at multiple scales electronic, atomic, molecular levels using DFT calculation. combined effect pyrazole ring ─COO─ group contributes highest tribopositivity PVA/Ta/MOF‐303. Besides, reduced HOMO–LUMO gap increased HOMO level make it easier electrons in PVA/Ta/MOF‐303 transfer. Meanwhile, MOF‐303 with high capture located deep can serve as traps reduce dissipation rate. Hence, density PVA/Ta/MOF‐303‐based TENG (PTM‐TENG) 90% RH reaches 361.43 µC m −2 . Hydrogen bonding, coordination effects, electrostatic interactions endow excellent mechanical, anti‐swelling, anti‐aging properties. Finally, PTM‐TENG assembled a self‐powered sewage treatment system, generation ·OH ·O 2 − enables realize water sterilization rate (99.99%) efficient organic pollutant degradation (>95%) within 20 min.

Language: Английский

Citations

2
Synergistic functionality of metal–organic framework-cellulose composites structures for advanced high-performance energy materials DOI

Chenglong Fu,

Xiaoping Han,

Yu Zhang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158384 - 158384

Published: Dec. 1, 2024

Language: Английский

Citations

6
A Fluorinated-Coordination Polymer Eutectic Crystal as High Output Triboelectric Nanogenerator Material for Self-powered System DOI

Dandan Zhao,

Long Li, Zhongyu Cai

et al.

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141571 - 141571

Published: Jan. 1, 2025

Language: Английский

Citations

0
Flexible humidity sensor with high responsiveness based on interlayer synergistic modification of MXene for physiological detection and soil monitoring DOI
Yanting Guo, Qinghua Gong, Dandan Liu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160572 - 160572

Published: Feb. 1, 2025

Language: Английский

Citations

0
Richly Ionized 2D HOF Membranes Enable Efficient Humidity Sensing DOI Open Access

Can Xu,

Wangze Cheng,

Qixiang Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Abstract Current humidity sensors often underperform due to the limited availability of moisture‐sensitive active sites within their material substrates, as well ineffective ion transport properties. Here, a new approach is presented using richly ionized 2D hydrogen‐bonded organic frameworks (HOFs) membranes, which feature high density pores and wide network continuous binding for water molecules. To significantly enhance sensing performance, cationic nanoconfined strategy employed. This involves nanoscale doping, modifies interlayer spacing HOFs, thereby revealing more hydrophilic providing additional ions improve conductivity. Based on these advancements, highly adjustable flexible sensor equipped with asymmetrical MXene electrodes developed. demonstrates rapid response/recovery times 0.42/0.62 s, an ultra‐high on/off ratio 3.5 × 10 4 , remarkable stability over than 200 cycles. The electrical performance system driven by potential difference between electrodes, rather electrode materials themselves, allowing increased versatility scalability. development offers pathway featuring enhanced ionic conductivity improved non‐contact capabilities.

Language: Английский

Citations

0
Preparation of flexible phase change fiber membrane for thermal insulation based on electrostatic spinning process DOI

Jinlu Yang,

Tianyi Zhang, Silong Wang

et al.

Vacuum, Journal Year: 2025, Volume and Issue: unknown, P. 114214 - 114214

Published: March 1, 2025

Language: Английский

Citations

0
Magnetic Suspension Damped Hybrid Nanogenerator for Water Wave Energy Harvesting DOI Open Access
Chuguo Zhang, Yijun Hao, Jin Yang

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Abstract Although the damped triboelectric nanogenerator with an assisted pendulum and spring structure has significant advantages in harvesting water‐wave energy, these designs have reduced space utilization of devices. Meanwhile, indispensable high‐weight power take‐off device related researches greatly also reduces anti‐overturning performance device. Here, a magnetic suspension hybrid (MSDHN) is designed for energy harvesting. A damping system high‐efficient capture developed by using two magnets oriented guide rail. design coils magnet at bottom giving entire excellent capability while sandwich improves electromagnetic generator output higher change flux. Furthermore, development nanofiber film high‐positive optimization significantly enhance nanogenerator. Importantly, relying on integrated structural design, obtained 98.8%. Finally, thanks to high utilization, achieves ultrahigh density 628.9 W m −3 . This research will promote large‐scale application energy.

Language: Английский

Citations

0
Force-Electric Biomaterials and Devices for Regenerative Medicine DOI

Shuncheng Yao,

Xi Cui, Yong Zhang

et al.

Biomaterials, Journal Year: 2025, Volume and Issue: unknown, P. 123288 - 123288

Published: March 1, 2025

Language: Английский

Citations

0
Enhancing Triboelectric Nanogenerator Performance with Metal–Organic Framework Composite Nanofibers: Applications in Public Transit Monitoring, Staircase Alerts, and Security DOI
Lakshakoti Bochu, Anjaly Babu, Supraja Potu

et al.

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

Published: April 2, 2025

Language: Английский

Citations

0
High‐Performance Coupled Nanogenerators Based on Electrospun Porous PU@PVDF‐ZnO Nanofibers with Core–Shell Structure DOI
Kailun Liu, Zhou Chen,

Mengdi Guan

et al.

Advanced Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 20, 2025

With the increasingdemand for sustainable energy harvesting and advanced engineering materials, coupled nanogenerators present promising applications as an emerging conversion device. The limitations of conventional materials regarding strength durability have stimulated development novel nanogenerator sutilizing a porous core‐shell structured nanofiber architecture: polyurethane@polyvinylidene difluoride‐ zinc oxide* polyamide 66 (porous PU@PVDF‐ZnO*PA66). In this study, thefriction‐negative piezoelectric layers were composed PU@PVDF‐ZnO,which fabricated using cost‐effective straightforward electrospinning technique. This research investigates impacts ZnO concentration, surface morphology, contact area, separation distance on performance nanogenerator. It was determined that incorporating 10 wt% yielded maximum output voltage, short‐circuitcurrent, power density 129.3 V, 0.644 μA, 0.0021 μW/m 2 , respectively. Additionally, it exhibited mechanical 8.8 MPa andan elongation at break 196.7%. membrane demonstrated water angle 104.75° maintained excellent morphology 160 °C, with stable observed after 5000 cycles separation. We posit nanogenerators, characterized by their flexibility washability, hold significant promise in wearable electronics, addressing challenges associated fabric durability.

Language: Английский

Citations

0