Effect of structural characteristics and surface functional groups of biochar on thermal properties of different organic phase change materials: Dominant encapsulation mechanisms

Lv, Laiquan; Wang, Jiankang; Ji, Mengting; Zhang, Yize; Huang, Shengyao; Cen, Kefa; Zhou, Hao

doi:10.1016/j.renene.2022.06.117

Cited by 37 publications

(8 citation statements)

References 76 publications

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“…Consequently, researchers are attempting to find economically suitable alternatives from biomass or waste. In the biomass materials, the form‐stable PCMs with Biochar prepared from neem tree ( Azadirachta indica ) [ 134 ] and Phoenix Leaf [ 135 ] as the supporting skeleton showed good stability (Figure 16a), which is a reasonable and sustainable BTMS solution. In the waste, Wang [ 44 ] used waste plastic as the skeleton raw material, and the material composite with PCM has a thermal conductivity of 104% higher than pure PCMs, while maintaining high thermal stability and leak resistance (Figure 16b), This can also be used for BTMS.…”

Section: Applications Of Form‐stable Pcms With Recyclable Skeletonmentioning

confidence: 99%

Recent advances in energy storage and applications of form‐stable phase change materials with recyclable skeleton

Jia,

Jiang,

Pan

et al. 2024

Carbon Neutralization

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With the expansion of the global population, the energy shortage is becoming increasingly acute. Phase change materials (PCMs) are considered green and efficient mediums for thermal energy storage, but the leakage problem caused by volume instability during phase change limits their application. Encapsulating PCMs with supporting materials can effectively avoid leakage, but most supporting materials are expensive and consume huge of natural resources. Carbon materials, which are rich and renewable resources, can be used as economical and environmentally friendly supporting skeletons to prepare form‐stable PCMs. Although many researchers have begun to use recyclable materials especially various derivatives of carbon as supporting skeletons to prepare form‐stable PCMs, the preparation methods, thermophysical properties and applications of form‐stable PCMs with recyclable skeletons have rarely been systematically summarized yet. Form‐stable PCMs with a recyclable skeleton can be used as green and efficient thermal storage materials due to their high heat storage capacity and good thermophysical stability after 2000 thermal cycles. This review investigates the effects of recyclable skeletons on the thermophysical properties including phase change temperature, latent heat, thermal conductivity, supercooling, and thermal cycling reliability. Four major kinds of recyclable skeletons are focused on: biomass, biochar, industrial by‐products as well as waste incineration ash. Additionally, the application scales of form‐stable PCMs with recyclable skeletons are explicated in depth. Moreover, the main challenges confronted by form‐stable PCMs with recyclable skeletons are discussed, and future research trends are proposed. This article provides a systematic review of the form‐stable PCMs with recyclable skeletons, giving significant guidance for further reducing carbon emissions and promoting the development of sustainable energy.

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Section: Applications Of Form‐stable Pcms With Recyclable Skeletonmentioning

confidence: 99%

Recent advances in energy storage and applications of form‐stable phase change materials with recyclable skeleton

Jia,

Jiang,

Pan

et al. 2024

Carbon Neutralization

View full text Add to dashboard Cite

show abstract

“…Lv and coworkers note that after the physical activation, "a clear and orderly pore structure could be followed, and the porosity increased significantly", moreover the wall of the pores of the steam activated biochar "was thinner and smaller than that of biochar activated with CO2". Experiments tell that the biochar which is physically activated had "richer structural characteristics" than biochar, with a consequent enhanced encapsulation capacity for PCM (Lv et al 2022).…”

Section: Dominant Mechanismsmentioning

confidence: 99%

Biochar Shape-Stabilized Phase-Change Materials for Thermal Energy Storage

Sparavigna

2022

SSRN Journal

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“…Latent heat thermal energy storage (LHTES) systems, which are based on phase change materials (PCMs), are able to absorb excessive thermal energy from solar energy and adjust the indoor ambient temperature by the reversible phase transition process. − Among various PCMs, organic PCMs such as paraffin, fatty acids, and alcohols have received tremendous attention because of their high energy storage density, excellent chemical stability, suitable phase transition temperatures, nontoxic, and noncorrosive . However, the liquid leakage issues of organic PCMs during solid–liquid phase transition severely restrict their practical application for thermal energy storage. − …”

Section: Introductionmentioning

confidence: 99%

Flame-Retardant and Form-Stable Delignified Wood-Based Phase Change Composites with Superior Energy Storage Density and Reversible Thermochromic Properties for Visual Thermoregulation

Wang

Yue

et al. 2023

ACS Sustainable Chem. Eng.

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The development of form-stable phase change materials (PCMs) with flame retardancy and the visual thermal storage process is crucial for their application in building energy conservation. Herein, an active phosphorus/ammonium-containing non-formaldehyde flame retardant (APA) was synthesized based on the natural compound phytic acid. Then, wood-based form-stable PCM composites (PTPCMs) with high energy storage density, excellent flame retardancy, and real-time and visual reversible thermochromic properties were successfully fabricated by impregnating the thermochromic compound into the APA-grafted delignified wood. The delignified wood well supports the solid–liquid PCMs and avoids their liquid leakage during phase transition due to the high surface tension and strong capillary effect. The differential scanning calorimetry (DSC) results showed that the PTPCMs possessed high thermal energy storage density (165.3–198.6 J/g) and reliable thermal stability. With the concentration of the flame-retardant APA increased, the peak heat release rate (pHRR) and total heat release (THR) of PTPCMs reduced noticeably, demonstrating the enhanced flame retardancy of PTPCMs. Moreover, PTPCM composites had good thermoregulation properties and the visualization of the phase transition process was made possible by the reversible thermochromic properties. In summary, the novel PTPCMs show tremendous application potential for efficient building energy conservation.

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Effect of structural characteristics and surface functional groups of biochar on thermal properties of different organic phase change materials: Dominant encapsulation mechanisms

Cited by 37 publications

References 76 publications

Recent advances in energy storage and applications of form‐stable phase change materials with recyclable skeleton

Recent advances in energy storage and applications of form‐stable phase change materials with recyclable skeleton

Biochar Shape-Stabilized Phase-Change Materials for Thermal Energy Storage

Flame-Retardant and Form-Stable Delignified Wood-Based Phase Change Composites with Superior Energy Storage Density and Reversible Thermochromic Properties for Visual Thermoregulation

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