Dual-encapsulated multifunctional phase change composites based on biological porous carbon for efficient energy storage and conversion, thermal management, and electromagnetic interference shielding

He, Hongfei; Wang, Yibo; Zhang, Zhao; Wang, Qingqing; Wei, Qufu; Cai, Yibing

doi:10.1016/j.est.2022.105358

Cited by 22 publications

(4 citation statements)

References 51 publications

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“…PW, HPC-2, and the corresponding PCC-2 were all characterized by XRD to determine how HPC affects the molecular crystal structure of PW. The XRD pattern of pure PW (Figure b) showed characteristic diffraction peaks at 21.3 and 23.7°, demonstrating the presence of crystalline phases . The typical peaks were also present in the spectrum of PCC-2, and no additional new peaks were observed.…”

Section: Resultsmentioning

confidence: 91%

“…The XRD pattern of pure PW (Figure 4b) showed characteristic diffraction peaks at 21.3 and 23.7°, demonstrating the presence of crystalline phases. 30 The typical peaks were also present in the spectrum of PCC-2, and no additional new peaks were observed. The results show that adding HPC maintains the crystalline state of PW and prevents the formation of any additional impurities, which are crucial for ensuring the phase transition of PCCs throughout the thermal storage process.…”

Section: Thermal Properties and Phase Change Behaviormentioning

confidence: 81%

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Porous Carbon-Based Phase Change Material Host Matrix from Semicoking Wastewater

Wang,

Yan,

Liu

et al. 2023

ACS Appl. Eng. Mater.

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The capture and storage of solar energy using phase change materials (PCMs) are very important for cost-effective energy management. However, their low thermal conductivity and liquid phase leakage pose persistent challenges for effectively harvesting thermal energy with PCMs. Herein, using semicoking wastewater-derived phenolic resin (SWPR) as the carbon source and potassium hydroxide as activator, hierarchical porous carbon (HPC) materials with abundant porous structures were synthesized to confine the PCM. The HPCs generated microporous and mesoporous layered cavities that provided more space as well as capillary adsorption and physical interaction for PCM storage. Shape-stable phase change composites (PCCs) were then fabricated by vacuum impregnation of the HPCs with paraffin wax to address the problems of low thermal conductivity and liquid melt leakage. The PCCs exhibited high energy storage densities of up to 84.07 J g −1 , dimensional stability, excellent thermal cycle stability, and the phase transition enthalpy of around 80.25 J g −1 after 500 heating−cooling cycles. The carbon support increased the thermal conductivity of the optimum PCC by 166% compared to that of pure paraffin wax. This study provides a cost-effective and environmentally friendly method for shape-stable PCMs based on waste-derived porous carbon materials with potential applications in solar−thermal energy storage.

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Section: Resultsmentioning

confidence: 91%

Section: Thermal Properties and Phase Change Behaviormentioning

confidence: 81%

Porous Carbon-Based Phase Change Material Host Matrix from Semicoking Wastewater

Wang,

Yan,

Liu

et al. 2023

ACS Appl. Eng. Mater.

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“…The possible shielding mechanism is shown in Figure 6 b. In addition, this high SE is superior to that of many recently reported biomass-based EMI shielding products, such as the Cs/epoxy (28 dB) [ 14 ], PEI/PA@AgNWs (32.9 dB) [ 16 ], honeycomb-like lignin-based carbon/graphene foams (28.5–70.5 dB) [ 51 ], loofah sponge-derived carbon/paraffin/urethane (32 dB) [ 52 ], epoxy/CNT sponge (33 dB) [ 53 ], Fe 3 O 4 @reduced graphene oxide (rGO)/natural rubber (37 dB) [ 54 ], rGO/polystyrene (45.1 dB) [ 55 ], multi-walled carbon nanotubes (MWCNT)/water-borne polyurethane (49.2 dB) [ 56 ], ALC based on sugarcane (51 dB) [ 15 ], SC-Co-G (55 dB) [ 21 ], and cotton fiber-derived carbon/CoFe alloy (~62 dB) [ 57 ], as summarized in Table 2 . To study the effect of structural damages of the carbonized needles on the EMI shielding property, we blended the powder-like pore-rich PNCFs@graphene sample with paraffin, and the sample shows a similar EMI SE value, as compared to that of the sample based on non-grinding pore-rich PNCFs@graphene.…”

Section: Resultsmentioning

confidence: 95%

Pore-Rich Cellulose-Derived Carbon Fiber@Graphene Core-Shell Composites for Electromagnetic Interference Shielding

Yang

Wan

Huang³

et al. 2022

Nanomaterials

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Because of serious electromagnetic pollution caused by the widespread use of radio frequency equipment, the study of electromagnetic interference (EMI) shielding materials has been a long-standing topic. Carbon fiber and graphene composites have great potential as EMI shielding materials due to their unique microstructure and electrical conductivity. In this work, a novel kind of core-shell composite is fabricated based on the pore-rich pine needles-derived carbon fibers (coded as PNCFs) core and the graphene shell. The pore-rich PNCFs are created by KOH activation, and the integration between the pore-rich PNCFs and the graphene relies on a plasma-enhanced chemical vapor deposition (PECVD) method. The conductivity of the pore-rich PNCFs@graphene core-shell composite reaches 4.97 S cm−1, and the composite has an excellent EMI shielding effectiveness (SE > 70 dB over X-band (8.2–12.4 GHz)) and achieves a maximum value of ~77 dB at 10.4 GHz, which is higher than many biobased EMI shielding materials in the recent literature. By calculation and comparison, the large absorption loss (accounting for 90.8% of total loss) contributes to reducing secondary radiation, which is quite beneficial for stealth uses. Thus, this work demonstrates a promising design method for the preparation of green high-performance composites for EMI shielding and stealth applications (such as warcrafts, missiles, and stealth wears).

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“…It has good electromagnetic interference shielding capability and plays a very good shielding role in Mobile phone signal shielding (Figure 18e). He [ 139 ] used loofah sponge (LS) as raw material to create new form‐stable PCMs with recyclable skeletons. It exhibits strong electromagnetic shielding ability (up to 32 dB), with absorption being the primary shielding mechanism.…”

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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Dual-encapsulated multifunctional phase change composites based on biological porous carbon for efficient energy storage and conversion, thermal management, and electromagnetic interference shielding

Cited by 22 publications

References 51 publications

Porous Carbon-Based Phase Change Material Host Matrix from Semicoking Wastewater

Porous Carbon-Based Phase Change Material Host Matrix from Semicoking Wastewater

Pore-Rich Cellulose-Derived Carbon Fiber@Graphene Core-Shell Composites for Electromagnetic Interference Shielding

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

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