Activated Carbon for Shape-Stabilized Phase Change Material

Nicholas, Ahmad Fariz; Hussein, Mohd Zobir; Zainal, Zulkarnain; Khadiran, Tumirah

doi:10.1016/b978-0-12-815757-2.00013-9

Cited by 8 publications

(3 citation statements)

References 92 publications

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“…Three categories of nanoscale pores are defined by IUPAC [18], and of these, it was reported that the mesopores and micropores are more preferable for SSPCM due to optimal surface tension and capillary forces [19]. Activated carbon is an organic-based material that has been studied as the supporting structure for PCMs because of its high specific surface area and porosity [20,21]. The use of activated carbon as the supporting structure could increase the thermal conductivity of the SSPCM [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Muchtar¹,

Hassam²,

Srinivasan³

et al. 2022

Journal of Energy Storage

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Section: Introductionmentioning

confidence: 99%

Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Muchtar¹,

Hassam²,

Srinivasan³

et al. 2022

Journal of Energy Storage

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“…On the other hand, to obviate the low thermal conductivity of organic PCMs, addition of thermal conductivity enhancer materials to PCMs or SSC-PCMs is a well-known solution. ,− For this purpose, carbon-based materials such as graphene nanoplatelets (GNPs), − graphite, − carbon nanotubes, ,− activated carbon, − and carbon fiber (CF) − are among the most commonly used materials as thermal conductivity promoter fillers. Liu et al worked on the development of novel PEG/SiO 2 /CF composites to store solar energy at a high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Fly Ash/Octadecane Shape-Stabilized Composite PCMs Doped with Carbon-Based Nanoadditives for Thermal Regulation Applications

Hekimoğlu

Sarı

2021

Energy Fuels

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The utilization of renewable energy sources has become essential in improving the energy efficiency of buildings. In this study, n-octadecane (nOD) was integrated with fly ash (FA) as low-cost industrial waste to produce the shape-stabilized composite PCM (SSC-PCM) for thermal energy storage in buildings. However, this combination resulted in a low-thermal conductivity SSC-PCM. In this regard, to enhance the thermal conductivity and enlarge the TES employment potential of the developed FA/n-OD(30 wt %) composite, it was doped separately with three different kinds of carbon-based materials, multiwalled carbon nanotubes (CNTs), carbon nanofiber (CNF), and graphene nanoplatelet (G). The effect of the amount (2, 4, 6, and 8 wt %) of the doping materials on the thermal conductivity, TES properties, thermal degradation stability, cycling reliability, and heat charging/discharging times of FA-based SSC-PCMs were systematically investigated. Chemical and crystalline structure, surface morphology, latent heat storage properties, and thermogravimetric characteristics were examined by FTIR, XRD, DSC, and TG analyses, respectively. DSC findings indicated that the SSC-PCMs have appropriate phase-change temperatures (25.01–26.43 °C) and reasonable latent heat storage capacities (60.50–64.47 J/g) for passive solar TES operations in building applications. The enhancements in the thermal conductivity of the SSC-PCMs were 187.09, 135.48, and 203.22% with the addition of 8 wt % CNTs, CNFs, and G, respectively. The influence of carbon nanoadditives on the thermal conductivity of the FA/nOD composite was evaluated by considering their heat storage/release performances. Consequently, the properties of the carbon nanomaterial-doped composites make them promising SSC-PCMs for thermal management of buildings.

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“…39 As this method utilizes the conventional heating mechanism, it is energy-consuming because a longer synthesis time is Required. 40,41 Besides, sufficient heat is lost in the conduction, and the actual temperature in the inner Teflon remains less than the applied temperature. In order to address this issue, the microwave heating mechanism applied in the hydrothermal route (microwave-assisted hydrothermal method) can reduce the reaction time and fasten the synthesis.…”

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confidence: 99%

Optimization and Fabrication of Binder-Free Nickel-Copper Phosphate Battery-type Electrode Using Microwave-Assisted Hydrothermal Method

Gerad

Numan²,

Khalid³

et al. 2023

J. Electrochem. Soc.

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A binder-free nickel-copper phosphate battery-type electrode was fabricated using a microwave-assisted hydrothermal technique. The fabrication process was optimized with Design of Experiment (DoE) software and then validated experimentally. The electrode made at 90°C for 12.5 minutes, with a Ni:Cu precursor ratio of 3:1, had the highest specific capacity. The experimental specific capacity of the optimized nickel-copper phosphate (Ni3-Cu-P) binder-free electrode was 96.2% of the theoretical value predicted by the software, which was within 10% error. Moreover, the growth of amorphous Ni3-Cu-P electrode material with irregular microspheres of small size was observed on the surface of nickel foam. These amorphous microspherical shapes of the Ni3-Cu-P electrode material provide more electroactive sites and a larger active surface area for faradaic reaction. In electrochemical energy storage applications, the Ni3-Cu-P electrode outperformed the bare Ni-P and Cu-P electrodes, with the highest areal capacity (0.77 C/cm2), the lowest charge transfer resistance (81.7 Ω), and the highest capacity retention (83.9%) at 2.0 mA/cm2. The study indicates that the Ni3-Cu-P electrode's exceptional electrochemical properties result from the interaction between nickel and copper in the binary metal phosphate framework, making it an excellent choice for battery-type electrodes used in electrochemical energy storage applications.

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Activated Carbon for Shape-Stabilized Phase Change Material

Cited by 8 publications

References 92 publications

Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Fly Ash/Octadecane Shape-Stabilized Composite PCMs Doped with Carbon-Based Nanoadditives for Thermal Regulation Applications

Optimization and Fabrication of Binder-Free Nickel-Copper Phosphate Battery-type Electrode Using Microwave-Assisted Hydrothermal Method

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