Solid–Liquid Phase Change Composite Materials for Direct Solar–Thermal Energy Harvesting and Storage

Accounts of Materials Research, Год журнала: 2023, Номер 4(6), С. 484 - 495

Опубликована: Май 1, 2023

ConspectusSolar–thermal energy storage (STES) is an effective and attractive avenue to overcome the intermittency of solar radiation boost power density for a variety thermal related applications. Benefiting from high fusion enthalpy, narrow temperature ranges, relatively low expansion coefficients, solid–liquid phase change materials (PCMs) have been viewed as one promising candidates large-capacity STES. Organic inorganic PCMs, however, generally suffer poor absorption, slow diffusion, leakage problems, which seriously limit their direct STES Preparing composites through compounding functional fillers with PCMs has investigated mainstream route enhance thermophysical properties, but optimizing charging, storage, discharging performances PCM systems remains grand challenge. Most often, improved were achieved at sacrifice reduced capacity. Simultaneous enhancement viable in recent years fabricating lightly loaded tailoring heat diffusion kinetics.In this Account, we discuss progress developing that can achieve rapid long-term stable controlled release. Such take advantage transportation photons within fast absorption-based harvesting solar–thermal energy. Dynamic manipulation absorbers by external fields further accelerate charging process. Moreover, tuning interaction between surfaces molecules not only enables seasonable harvested under supercooled states also allows controllable release triggering cold crystallization First, describe design engineering principles such composites. Emphases are placed on introducing desired features comprehensively properties including absorptance, conductivity, form stability, supercooling size, morphology, surface chemistry fillers. We elaborate movable strategies minute driven directionally advance phase-changing interface, thereby accelerating rates while fully retaining large latent capacity PCMs. The latest development capable stably storing room months or even introduced. In end, emerging applications providing domestic heating, personal management thermoelectric conversion, future research needs field discussed.

Язык: Английский

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Halloysite-based aerogels for efficient encapsulation of phase change materials with excellent solar energy storage and retrieval performance

Applied Energy, Год журнала: 2023, Номер 341, С. 121101 - 121101

Опубликована: Апрель 24, 2023

Язык: Английский

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High-Quality Anisotropic Graphene Aerogels and Their Thermally Conductive Phase Change Composites for Efficient Solar–Thermal–Electrical Energy Conversion

ACS Sustainable Chemistry & Engineering, Год журнала: 2023, Номер 11(32), С. 11991 - 12003

Опубликована: Июль 28, 2023

Organic phase change materials (PCMs) with high enthalpies are ideal for heat storage and release, which expected to promote the utilization of thermal energy mitigate shortage. However, inherent inferior light absorbance, poor conduction, weak shape stability common organic PCMs severely restrict absorption, conversion, solar energy. Herein, high-quality anisotropic graphene aerogels derived from pre-oxidized polyacrylonitrile (OPAN)/graphene oxide (GO) components designed first time by unidirectional freezing, freeze-drying, carbonization, graphitization at 2800 °C. The GO component efficiently induces orientation OPAN converts it graphitic carbon during graphitization. After vacuum-assisted impregnation paraffin, an optimal thermally conductive composite (PCC) possessing enhanced through-plane conductivity 4.36 W m–1 K–1 a low content 1.07 vol %, improved stability, fairly latent retention 99.7% is obtained. Thanks remarkable absorbance solar–thermal conversion capacities, PCC efficient in applications solar–thermal–electrical competitive output voltage 1181 mV under irradiation simulated 5 kW m–2. By releasing stored PCC, can continue power LED lamp even after stopped. This work provides feasible methodology fabricating PCCs application conversion.

Язык: Английский

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Water-assisted synthesis of phenolic aerogel with superior compression and thermal insulation performance enabled by thick-united nano-structure

Chemical Engineering Journal, Год журнала: 2023, Номер 464, С. 142805 - 142805

Опубликована: Апрель 5, 2023

Язык: Английский

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High-enthalpy aramid nanofiber aerogel-based composite phase change materials with enhanced thermal conductivity

Composites Communications, Год журнала: 2023, Номер 40, С. 101614 - 101614

Опубликована: Май 11, 2023

Язык: Английский

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