Multi-Energy Conversion and Electromagnetic Shielding Enabled by Carbonized Polyimide/Kevlar/Graphene Oxide@ZIF-67 Bidirectional Complex Aerogel-Encapsulated Phase-Change Materials DOI Creative Commons
Shi Tao, Xing Gao, Huan Liu

и другие.

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Апрель 27, 2025

Abstract To address the limitations of conventional energy systems and optimize conversion pathways efficiency, a type “five-in-one” multifunctional phase-change composite with magnetothermal, electrothermal, solar-thermal, thermoelectric electromagnetic shielding functions is developed for multipurpose applications. Such novel fabricated by an innovative combination paraffin wax (PW) as material carbonized polyimide/Kevlar/graphene oxide@ZIF-67 complex aerogel supporting material. The exhibits unique bidirectional porous structure high porosity robust skeleton to support loading PW. reduced graphene oxide CoNC resulting from high-temperature carbonization are anchored on generate thermal conduction magnetic effect, enhancing phonon electron transfer improving its efficiency. not only excellent thermoelectric, magnetothermal performance, but also achieves interference effectiveness 66.2 dB in X -band. introduction PW significantly improves energy-storage capacity during multi-energy conversion. great application potential efficient solar utilization, sustainable power generation, outdoor deicing, human therapy, electronic device protection.

Язык: Английский

Leakage Proof, Flame-Retardant, and Electromagnetic Shield Wood Morphology Genetic Composite Phase Change Materials for Solar Thermal Energy Harvesting DOI Creative Commons
Yuhui Chen, Meng Yang,

Jiangyu Zhang

и другие.

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Май 16, 2024

Abstract Phase change materials (PCMs) offer a promising solution to address the challenges posed by intermittency and fluctuations in solar thermal utilization. However, for organic solid–liquid PCMs, issues such as leakage, low conductivity, lack of efficient solar-thermal media, flammability have constrained their broad applications. Herein, we present an innovative class versatile composite phase (CPCMs) developed through facile environmentally friendly synthesis approach, leveraging inherent anisotropy unidirectional porosity wood aerogel (nanowood) support polyethylene glycol (PEG). The modification process involves incorporation phytic acid (PA) MXene hybrid structure evaporation-induced assembly method, which could impart non-leaking PEG filling while concurrently facilitating conduction, light absorption, flame-retardant. Consequently, as-prepared wood-based CPCMs showcase enhanced conductivity (0.82 W m −1 K , about 4.6 times than PEG) well high latent heat 135.5 kJ kg (91.5% encapsulation) with durability stability throughout at least 200 heating cooling cycles, featuring dramatic conversion efficiency up 98.58%. In addition, synergistic effect MXene, flame-retardant performance has been significantly enhanced, showing self-extinguishing behavior. Moreover, excellent electromagnetic shielding 44.45 dB was endowed CPCMs, relieving contemporary health hazards associated waves. Overall, capitalize on exquisite cell transport development multifunctional showcasing operational principle proof-of-concept prototype system.

Язык: Английский

Процитировано

111

Long‐Term Infrared Stealth by Sandwich‐Like Phase‐Change Composites at Elevated Temperatures via Synergistic Emissivity and Thermal Regulation DOI Open Access
Jianwei Jing, Huan Liu, Xiaodong Wang

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 34(2)

Опубликована: Окт. 3, 2023

Abstract The rapid development of infrared surveillance technologies has attracted great attention for scientists to design advanced functional materials with prominent stealth and thermal camouflage effectiveness. In the current study, a sandwich‐like composite based on crosslinked polyimide aerogel, meso‐erythritol (mE)‐based phase‐change composite, an MXene film been developed achieve long‐term at elevated temperatures. this system, lower aerogel layer can act as barrier insulate heat transfer through its layer‐stacking structure under ultralow directional conduction. introduction middle ensures that system obtains dynamical temperature‐regulation capability sensible latent absorption mE phase change material, while upper provides very low emissivity surface system. As result, achieves significant reduction in radiation temperature high‐temperature target. Moreover, exhibits good electromagnetic interference shielding effectiveness, making obtain various complicated scenarios. This work promising approach realize targets security protection counter‐surveillance.

Язык: Английский

Процитировано

53

Experimental investigation and numerical simulation on microwave thermal conversion storage properties of multi-level conductive porous phase change materials and its multifunctional applications DOI
Jingtao Su,

Jiahui Lin,

Yang Cao

и другие.

Applied Thermal Engineering, Год журнала: 2024, Номер 253, С. 123774 - 123774

Опубликована: Июнь 21, 2024

Язык: Английский

Процитировано

43

Unidirectionally Structured Magnetic Phase-Change Composite Based on Carbonized Polyimide/Kevlar Nanofiber Complex Aerogel for Boosting Solar-Thermo-Electric Energy Conversion DOI
Shi Tao, Huan Liu, Xiaodong Wang

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(8), С. 10180 - 10195

Опубликована: Фев. 16, 2024

To realize highly efficient solar-thermo-electric energy conversion for clean electricity power generation, we have developed a new type of unidirectionally structured magnetic phase-change composite comprising carbonized polyimide (C–PI)/Kevlar nanofiber (KNF) complex aerogel as 3D carbon skeleton porous supporting material, CoFe2O4 nanoparticles additive, polyethylene glycol (PEG) and polypyrrole photothermal absorption coating layer. The as-fabricated C–PI/KNF exhibits unidirectional microstructure, high porosity, robust frame, ultralight weight, thermal conductance. Featured with such unique structure characteristics, the can offer an effective heat electron transfer method to ensure solar-thermal storage composite. latent capacity over 150 J g–1, outstanding shape stability along low leakage 0.2 wt %, good cycling stability, efficiency 84.8%. Based on Seebeck effect, solar thermoelectric generation system (STEGS) was constructed hot side coupled cold immersed in air ice water. Under 2.0 kW m–2 irradiation, STEGS water obtained maximum output voltage current 259.7 mV 27.1 mA, respectively, which are significantly higher than those air. environment is 50.6% that under 4.0 irradiation. More importantly, continuously generated about 810 s without irradiation thanks release by PEG component within In addition, introduction accelerate through periodic motion Néel relaxation or Brownian relaxation. This resulted increase 13.7 11.5%, alternating field result magnetism-accelerated conversion. study offers innovative approach developing PCM-based advanced functional materials utilization sustainable generation.

Язык: Английский

Процитировано

24

Flexible phase change composites based on hierarchically porous polypyrrole scaffold for broad-band solar absorption and efficient solar-thermal-electric energy conversion DOI
Yulong Liu,

Zicheng Tang,

Zi-jie Huang

и другие.

Composites Science and Technology, Год журнала: 2024, Номер 250, С. 110519 - 110519

Опубликована: Фев. 28, 2024

Язык: Английский

Процитировано

21

Highly flexible phase-change film with solar thermal storage and sensitive motion detection for wearable thermal management DOI

Jiuao Wang,

Hao Yue, Zongliang Du

и другие.

Chemical Engineering Journal, Год журнала: 2023, Номер 466, С. 143334 - 143334

Опубликована: Май 3, 2023

Язык: Английский

Процитировано

29

Tree-ring structured phase change materials with high through-plane thermal conductivity and flexibility for advanced thermal management DOI

Wan-jun Jiang,

Ruiqing Wang,

Ting-yu Zhu

и другие.

Chemical Engineering Journal, Год журнала: 2023, Номер 479, С. 147622 - 147622

Опубликована: Ноя. 24, 2023

Язык: Английский

Процитировано

24

“Back‐to‐Back” Radial Layered Skeleton Converging Heat Flow to Assist in Thermal Conduction of Aramid Nanofibers/Graphene Phase Change Composite Materials DOI
Jun Tong, Zhimeng Liu, Yang Liu

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 23, 2024

Abstract Although optimizing the design of thermal conductive frameworks to promote collection, transportation, and storage energy in composite phase change materials (CPCMs) is widely studied, research on oriented layered still exploratory stage. Taking inspiration from bidirectional ice template strategy, a new approach proposed influence “oriented micro‐unit” conductivity photothermal mass transfer CPCMs. Three aramid nanofibers graphene nanosheets aerogels with different structures are prepared by high‐energy ball milling freezing. The enthalpy values within range 146–152 J g −1 . Photothermal conversion experiments, hot plate solar‐thermal‐electric experiments multi‐physics field simulation analysis jointly show that CPCMs “back‐to‐back” radial structure behaves most outstanding ability heat performance, an increase 173.3%, efficiency 91.9%, maximum output voltage 303.3 mV. opens up ideas for where directional required.

Язык: Английский

Процитировано

15

Light- and electro-driven phase change materials derived from activated porous biochar nanosheets and encapsulated polyethylene glycol DOI
Jinkai Zhang,

Zhiyu Zheng,

Lei Xu

и другие.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 690, С. 133783 - 133783

Опубликована: Март 20, 2024

Язык: Английский

Процитировано

13

Three-dimensional network-based composite phase change materials: Construction, structure, performance and applications DOI

Taofen Wu,

Dan Wu, Yong Deng

и другие.

Renewable and Sustainable Energy Reviews, Год журнала: 2024, Номер 199, С. 114480 - 114480

Опубликована: Май 1, 2024

Язык: Английский

Процитировано

13