Graphene Aerogel-Supported Phase-Change Material for Pyroelectric Energy Harvesting: Structural Modification and Form Stability Analysis

Article Nanoscience & Nanotechnology

Polymer Encapsulation Strategy toward 3D Printable, Sustainable, and Reliable Form-Stable Phase Change Materials for Advanced Thermal Energy Storage

Jiahao Ma et al.

Summary: An excellent polymer encapsulation strategy is proposed to prepare 3D printable, sustainable, and reliable form-stable PCMs, which have top-class latent heat and versatile applications.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Energy & Fuels

Integration of form-stable phase change material into pyroelectric energy harvesting system

Chengbin Yu et al.

Summary: An advanced pyroelectric energy harvesting system using form-stable phase change material composites was proposed in this study. By utilizing PVDF as the pyro-electrode, the system effectively controlled temperature fluctuations and generated stable output voltage and current. Numerical simulations indicated the potential of this system to make significant progress in high throughput and sustainable energy harvesting.

APPLIED ENERGY (2022)

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Article Thermodynamics

Sustainable solar energy harvesting using phase change material (PCM) embedded pyroelectric system

Chengbin Yu et al.

Summary: This study proposes a smart control of pyroelectric energy harvesting utilizing PCM composites, controlling the change in temperature difference for energy conversion under different solar irradiation conditions. The combination of pyro-electrode and PCM composites can generate stable and continuous electrical energy. The underlying physics of the system are theoretically modeled using the finite element method (FEM).

ENERGY CONVERSION AND MANAGEMENT (2022)

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Article Polymer Science

Advanced internal porous skeleton supported phase change materials for thermo-electric energy conversion applications

Chengbin Yu et al.

Summary: Phase change materials (PCMs) are capable of absorbing and releasing a significant amount of heat, making them crucial in energy harvesting generators. By utilizing microencapsulation and graphene aerogel, the issue of PCM leakage can be effectively addressed.

JOURNAL OF POLYMER RESEARCH (2022)

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Article Materials Science, Multidisciplinary

Surface modification of microencapsulated phase change materials with nanostructures for enhancement of their thermal conductivity

Pin Jin Ong et al.

Summary: This study introduces the use of a polyurethane acrylic lacquer and hardener as an adhesive for uniformly coating high thermal conductivity additives on the shell of MEPCMs. It was found that MWCNT was the most effective additive in enhancing the thermal conductivity of MEPCMs without significantly affecting their energy storage and release performance.

MATERIALS CHEMISTRY AND PHYSICS (2022)

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Review Energy & Fuels

Strategies to reduce the flammability of organic phase change Materials: A review

Zhuang Mao Png et al.

Summary: Organic Phase Change Materials (oPCMs) are widely used in regulating temperature changes, but their flammability remains a major challenge. Various methods such as adding flame retardants, chemical transformations, and surface coating can be used to reduce the flammability. Future research directions include enhancing flame retardant properties through synergistic flame retardants and chemical modifications.

SOLAR ENERGY (2022)

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Article Energy & Fuels

Flexible composite phase change material with anti-leakage and anti-vibration properties for battery thermal management

Qiqiu Huang et al.

Summary: This study proposes a novel thermally induced flexible composite phase change material that is anti-leakage and anti-vibration. The material has a high mass retention rate and temperature control ability, making it suitable for passive thermal management and energy storage fields.

APPLIED ENERGY (2022)

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Article Polymer Science

Modification of Graphene Aerogel Embedded Form-Stable Phase Change Materials for High Energy Harvesting Efficiency

Chengbin Yu et al.

Summary: The study focused on using porous graphene aerogel embedded with PDMS to create improved PCM composites, enhancing efficiency of thermo-electric power generation by reducing volume shrinkage, maintaining structural integrity, and increasing PCM weight.

MACROMOLECULAR RESEARCH (2022)

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Article Polymer Science

Enhancement in thermo-electric energy harvesting efficiency by embedding PDMS in form-stable PCM composites

Chengbin Yu et al.

Summary: In order to reduce the volume shrinkage of phase change material (PCM) composites during melting and infiltration, polydimethylsiloxane (PDMS) was introduced to graphene aerogel through solution spray treatment in this study, significantly enhancing the mechanical properties and dimensional stability of the material.

POLYMERS FOR ADVANCED TECHNOLOGIES (2022)

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Review Green & Sustainable Science & Technology

Metal foam-phase change material composites for thermal energy storage: A review of performance parameters

M. Aramesh et al.

Summary: This study provides a detailed review of the parameters affecting the thermophysical performance of PCM-MFs. It identifies the most effective parameters and investigates their possible effects. It also points out common observations and contradicting reports, and discusses the current gaps in the field and opportunities for further research.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

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Article Green & Sustainable Science & Technology

Technology development and application prospects of organic-based phase change materials: An overview

Jialu Tao et al.

Summary: This paper provides a comprehensive review of the preparation strategies, thermal properties, strategies for improving thermal conductivity, and potential applications for organic-based PCMs. It also highlights the challenges in the practical application of organic-based PCMs.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

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Review Chemistry, Physical

Mineral-based form-stable phase change materials for thermal energy storage: A state-of-the art review

Dian-ce Gao et al.

Summary: This review provides an overview of using minerals to encapsulate phase change materials (PCM) and analyzes the mechanisms and methods for improving the thermal performance of mineral-based functional solid-liquid phase change materials (FSPCM). It also presents the practical applications and discusses the future developments of mineral-based FSPCMs. This study is important for improving encapsulation techniques, enhancing thermal performance, and promoting practical applications.

ENERGY STORAGE MATERIALS (2022)

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Article Chemistry, Physical

Coral reef structured cobalt-doped vanadate oxometalate nanoparticle for a high-performance electrocatalyst in water splitting

Zhou Yang et al.

Summary: Water splitting for high-clean hydrogen energy is crucial. Coral reef-like Co(3)V(2)O(8 )nanoparticles exhibit low oxygen evolution reaction overpotential, good stability, fast kinetics for hydrogen evolution reaction, and small impedance. This novel nanomaterial electrocatalyst shows superior performance in overall water splitting.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Chemistry, Physical

NiS2@V2O5/VS2 ternary heterojunction for a high- performance electrocatalyst in overall water splitting

Zhou Yang et al.

Summary: In this study, a NiS2@V2O5/VS2 ternary heterojunction electrocatalyst was successfully synthesized, exhibiting excellent catalytic activity and stability, and showing great potential for water splitting.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

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Article Energy & Fuels

Bio-inspired molybdenum carbide/carbon-based aerogel with advanced thermal management as a solar evaporator

Fang Yu et al.

Summary: This article introduces a biomimetic solar evaporator that achieves a balance between thermal insulation and water transportation while exhibiting excellent structural strength. The evaporator has a lamellar structure with interconnected bridges, enabling low thermal conductivity and ultrafast water transportation. In experiments, the evaporator demonstrated a high evaporation rate and superb photothermal conversion efficiency, along with good durability and stability, making it suitable for solar desalination and oil adsorption.

SOLAR ENERGY MATERIALS AND SOLAR CELLS (2022)

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Article Chemistry, Physical

Phase Change Material (PCM) Composite Supported by 3D Cross-Linked Porous Graphene Aerogel

Chengbin Yu et al.

Summary: In this study, modified 3D porous graphene aerogel is used as a supporting material for the integration of PCM composites with a pyro system. The experimental results demonstrate that PCM composites can stabilize temperature fluctuation and provide reliable energy harvesting.

MATERIALS (2022)

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Article Energy & Fuels

Sponge-like form-stable phase change materials with embedded graphene oxide for enhancing the thermal storage efficiency and the temperature response in transport packaging applications

Ting Wang et al.

Summary: In this study, a series of sponge-like phase change materials (FPCMs) containing hydrated salts were synthesized and supported by superporous hydrogel (SPH) for thermal management in transport packaging. The surface and internal structures of the FPCMs were examined, and their thermal storage efficiency, temperature response, and temperature regulation properties were measured. The results showed that the addition of modifiers and optimization of the supporting material significantly improved the performance of the FPCMs, resulting in higher energy storage efficiency and temperature regulation properties in transport packaging.

APPLIED ENERGY (2022)

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Article Chemistry, Physical

Graphite foam as carbon-based footprint for in-situ fabrication of Ti3+-doped titanium niobium oxide (Ti2Nb10O29) nanocrystal for high-rate performance lithium-ion batteries

Wellars Utetiwabo et al.

Summary: This study proposes an in-situ source template thermal reduction and annealing process on graphene foam to successfully induce Ti3+ ions into titanium niobium oxide nanocrystal structure (TNO@GF) for high-energy/power lithium storage. The introduction of Ti3+ not only increases the active sites for Li+ ion storage but also modulates the electronic interaction, leading to enhanced reversible discharge capacity, rate capability, and cycling stability.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Chemistry, Inorganic & Nuclear

A novel 2D sulfide gallium heterojunction as a high-performance electrocatalyst for overall water splitting

Zhou Yang et al.

Summary: Splitting water to produce hydrogen energy is an effective solution to the global energy crisis. However, the process still faces challenges of high voltage and slow kinetics. In this study, a sulfide gallium heterojunction with abundant S vacancies was synthesized, exhibiting low overpotential and good stability. When applied for overall water splitting, the heterojunction achieved a low voltage in an alkaline solution. The results suggest that this designed heterojunction has great potential as a replacement for the commercial RuO2//Pt/C system in water splitting.

JOURNAL OF SOLID STATE CHEMISTRY (2022)

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Article Polymer Science

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Chengbin Yu et al.

Summary: Cross-linked graphene aerogel can be used to prepare form-stable PCM composites with high thermal energy storage capacity, suitable for thermal-to-electrical energy harvesting, and exhibits excellent mechanical properties at high temperatures.

GELS (2022)

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Article Chemistry, Physical

3D graphene/silver nanowire aerogel encapsulated phase change material with significantly enhanced thermal conductivity and excellent solar-thermal energy conversion capacity

Linda Lv et al.

Summary: In this study, a novel reduced graphene oxide aerogel encapsulated phase change material was developed by introducing silver nanowires. The resulting encapsulated material showed significantly improved thermal conductivity and high latent heat capacity. It also demonstrated efficient solar-thermal conversion. This novel material has great potential in applications such as waste heat recovery, thermal management, and solar energy utilization.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Green & Sustainable Science & Technology

A critical review on phase change material energy storage systems with cascaded configurations

S. Christopher et al.

Summary: This paper reviews the performance of cascaded or multiple phase change materials (PCMs) in latent heat thermal energy storage (LHTES) systems, highlighting the potential for improving energy component performance through cascaded techniques and other enhancement approaches. It also discusses the influence of stage numbers on the cascaded LHTES unit performance and provides a recommended range for these parameters. The study suggests that replacing single PCM with multiple PCMs can enhance the performance of thermal energy storage systems in terms of energy efficiency and charging/discharging rate.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Construction & Building Technology

Thermal and mechanical properties of ultra-high performance concrete incorporated with microencapsulated phase change material

Miao Ren et al.

Summary: The novel MPCM-UHPC composite material exhibits excellent thermal performance and mechanical properties, but the incorporation of MPCM has a negative effect on the mechanical properties and autogenous shrinkage of the material.

CONSTRUCTION AND BUILDING MATERIALS (2021)

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Article Chemistry, Applied

Synthesis and characterization of microencapsulated phase change materials with chitosan-based polyurethane shell

Yan Gao et al.

Summary: The paper investigated the preparation and properties of chitosan-based polyurethane microencapsulated phase change materials, finding that they exhibited excellent thermal performance and cyclic durability, making them suitable for applications in anti-counterfeiting technology and UV protective clothing.

CARBOHYDRATE POLYMERS (2021)

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Article Engineering, Environmental

Single-atom platinum or ruthenium on C4N as 2D high-performance electrocatalysts for oxygen reduction reaction

Zhou Yang et al.

Summary: C4N was synthesized from 2,3-diyldiamine phenazine via one-step hydrothermal method and loaded with single-atom metal to form new electrocatalysts, which exhibit better ORR performance compared with commercial Pt/C.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Polymer Science

Research on synthesis and self-healing properties of interpenetrating network hydrogels based on reversible covalent and reversible non-covalent bonds

Xiaowen Huang et al.

Summary: This paper introduces a self-healing hydrogel suitable for complex natural environments, incorporating disulfide bonds, acylhydrazone bonds, and hydrogen bonds. The experiment demonstrates that the hydrogel can self-heal in different environments, with the self-healing efficiency increasing over time.

JOURNAL OF POLYMER RESEARCH (2021)

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Article Materials Science, Ceramics

Formation of hierarchical Si3N4 foams by protein-based gelcasting and chemical vapor infiltration

Junsheng Li et al.

Summary: Silicon nitride foams with a hierarchical porous structure were successfully formed by combining protein-based gelcasting, chemical vapor infiltration, and in-situ growth of silicon nitride nanowires. These foams have controllable high porosity, good strength, and permeability at different scales, making them suitable for microparticle infiltration applications.

JOURNAL OF ADVANCED CERAMICS (2021)

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Article Engineering, Environmental

A medium-temperature, metal-based, microencapsulated phase change material with a void for thermal expansion

Jiaming Bao et al.

Summary: An innovative technique was presented to encapsulate phase change materials by constructing a thermal expansion void inside microencapsulated phase change materials (MEPCMs) through a "double-layer coating, sacrificial inner layer" method. This method improves the thermal performance and thermal cycle life of MEPCMs, providing a solution to the rupture problem caused by the thermal expansion of phase change materials. It also offers a new perspective for the microencapsulation of other metals at medium or high temperatures.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Polymer Science

Enhancement of Thermo-Electric Energy Conversion Using Graphene Nano-platelets Embedded Phase Change Material

Chengbin Yu et al.

Summary: Phase change materials (PCMs) containing graphene nano-platelets (GNPs) have been used for efficient thermo-electric energy harvesting during the phase transition process. A system composed of two different PCMs can absorb or release large amounts of thermal energy while remaining in a nearly isothermal condition. By increasing the amount of GNPs filler, the thermal conductivity of the PCM composites was enhanced, leading to improved heating and cooling thermo-electric conversion efficiencies.

MACROMOLECULAR RESEARCH (2021)

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Article Chemistry, Physical

Experimental Investigation of the Apparent Thermal Conductivity of Microencapsulated Phase-Change-Material Slurry at the Phase-Transition Temperature

Krzysztof Dutkowski et al.

Summary: The article presents detailed studies on the thermal conductivity of water slurry with microencapsulated PCM and a slurry based on water-propylene glycol solutions. The research found that increasing the slurry temperature enhances its thermal conductivity, with higher conductivity observed when PCM is in liquid form. Additionally, during phase transformation, a significant increase in thermal conductivity is observed, peaking at the manufacturer's declared transition temperature.

MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Analysis of Thermoelectric Energy Harvesting with Graphene Aerogel-Supported Form-Stable Phase Change Materials

Chengbin Yu et al.

Summary: Graphene aerogel-supported phase change material (PCM) composites can sustain the initial solid state without leakage when melted, and the high portion of pure PCM in the composite can absorb or release a large amount of heat. These form-stable PCM composites were used to construct a thermoelectric power generator for collecting electrical energy under external temperature changes. The thermoelectric energy harvesting efficiencies during heating and cooling were 62.26% and 39.96%, respectively.

NANOMATERIALS (2021)

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Article Chemistry, Physical

Enhancement of Structural Stability of Graphene Aerogel for Thermal Energy Harvesting

Chengbin Yu et al.

Summary: A modified graphene aerogel with high mechanical properties was synthesized in this work, addressing the structural stability issue commonly faced by graphene aerogels. The internal structure of the graphene aerogel was successfully cross-linked, enabling it to reduce volume shrinkage during the infiltration of phase change material (PCM), and accommodate additional pure PCM without structural damage. This cross-linked graphene/cysteamine aerogel (GCA) supported PCM composites that can readily absorb solar light to transfer thermal energy and generate electrical energy through a PN junction thermoelectric power generator (PN TEG).

ACS APPLIED ENERGY MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Phase change material-integrated latent heat storage systems for sustainable energy solutions

Waseem Aftab et al.

Summary: Thermal energy storage, particularly latent heat TES, is crucial for sustainable energy development. The systems are categorized into solar-thermal storage, electro-thermal storage, waste heat storage, and thermal regulation, with a focus on efficient latent heat utilization and system design. Exciting research opportunities exist to further enhance the energy efficiency of integrated TES systems.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Materials Science, Textiles