One-step synthesis of graphene-based composite phase change materials with high solar-thermal conversion efficiency

Li, Yangeng; Sun, Keyan; Kou, Yan; Liu, Hanqing; Wang, Lu; Yin, Nan; Dong, Hongsheng; Shi, Quan

doi:10.1016/j.cej.2021.132439

Cited by 80 publications

(42 citation statements)

References 48 publications

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“…31 Li et al used a one-step strategy to prepare graphene/PEG composite PCM, which exhibited a high melting enthalpy of 163.5 J g À1 and extraordinary solar-thermal conversion efficiency of 93.7%. 32 However, as the graphene nanosheets are assembled by van der Waals forces or hydrogen bonding, the weak interactions between the graphene nanosheets causes strong phonon scattering at the interface sites. Furthermore, the internal network will also partially collapse due to the lack of supporting framework between the graphene nanosheets.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

et al. 2022

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

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

Wang

et al. 2022

J. Mater. Chem. A

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“…This phenomenon can be attributed to the fact that the PCM tends to be more homogeneous with the number of cycles increasing in the SF/CA composite PCM. 22 As shown in Table S4, the phase change enthalpy is almost constant after 500 cycles for SF/CA, which indicated that SF/CA has good thermal cycle stability. Therefore, the SF/CA composite PCM with the melting temperature of 30.6 °C and melting enthalpy of 123.4 J/g has good thermal stability and cycle stability, showing superior thermal energy storage and promising wearable personal thermal management performance.…”

Section: ■ Results and Discussionmentioning

confidence: 83%

“…These advantages make shape-stable composite PCMs by porous material encapsulation candidates for wearable personal thermal management. Shape-stable composite PCMs by porous material encapsulation have been obtained by adding graphene, − microcapsules, , polymers, − and other materials. Several studies have shown that applying shape-stable composite PCMs by porous material encapsulation in wearable thermal management devices has good temperature regulation. − Sun et al introduced paraffin into a graphene porous framework and obtained graphene aerogel films with excellent flexibility.…”

Section: Introductionmentioning

confidence: 99%

Flexible and Biocompatible Silk Fiber-Based Composite Phase Change Material for Personal Thermal Management

Wang

Dong

Cheng

et al. 2022

ACS Sustainable Chem. Eng.

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Phase change materials (PCMs) are regarded as an effective passive personal thermal management strategy. However, the preparation of flexible and biocompatible PCMs remains a great challenge. In this study, a silk fiber (SF)-based composite PCM for wearable personal thermal management was prepared using renewable natural silkworm cocoons and biocompatible capric acid (CA). The SF/CA composite PCM is flexible, biocompatible, and dyeable. The results show that the SF and CA are physically bonded, and the crystal structure of CA is not influenced by SF. The melting phase change enthalpy and temperature of the SF/CA composite PCM are 123.4 J/g and 30.6 °C, respectively. It has excellent shape stability, thermal stability, and cycling stability. Particularly, the SF/CA composite PCM has excellent performance for wearable personal thermal management under three scenarios including variable temperature mode, isothermal mode, and light irradiation mode. It can also reduce the temperature fluctuation of the human body in a hot or cold environment. Therefore, the SF/CA composite PCM has bright application prospects for wearable personal thermal management in hot and cold environments.

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“…Solar energy, as an inexhaustible and clean natural energy resource, has played a vital role in various solar–thermal conversion fields. Combining photoresponsive materials with PCMs has the potential to boost energy storage and facilitate continuous heating behavior based on sunlight. − Furthermore, electrodriven heating has been demonstrated as a compensatory option for further expanding the application scenarios, especially in cloudy, rainy conditions or indoor space. ,− …”

Section: Introductionmentioning

confidence: 99%

A Trimode Thermoregulatory Flexible Fibrous Membrane Designed with Hierarchical Core–Sheath Fiber Structure for Wearable Personal Thermal Management

et al. 2022

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Advanced textiles designed for personal thermal management contribute to thermoregulation in an individual and energy-saving manner. Textiles incorporated with phase changing materials (PCMs) are capable of bridging the supply and demand for energy by absorbing and releasing latent heat. The integration of solar heating and the Joule heating function supplies multidriving resources, facilitates energy charging and storage, and expands the service time and application scenarios. Herein, we report a fibrous membrane-based textile that was developed by designing the hierarchical core−sheath fiber structure for trimode thermal management. Especially, coaxial electrospinning allows an effective encapsulation of PCMs, with high heat enthalpy density (106.9 J/g), enabling the membrane to buffer drastic temperature changes in the clothing microclimate. The favorable photothermal conversion performance renders the membrane with the high saturated temperature of 70.5 °C (1 sun), benefiting from the synergistic effect of multiple light harvesters. Moreover, a conductive coating endows the composite membrane with an admirable electrothermal conversion performance, reaching a saturated temperature of 73.8 °C (4.2 V). The flexible fibrous membranes with the integrated performance of reversible phase change, multi-source-driven heating, and energy storage present great advantages for all-day, energy-saving, and wearable individual thermal management applications.

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One-step synthesis of graphene-based composite phase change materials with high solar-thermal conversion efficiency

Cited by 80 publications

References 48 publications

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

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

Flexible and Biocompatible Silk Fiber-Based Composite Phase Change Material for Personal Thermal Management

A Trimode Thermoregulatory Flexible Fibrous Membrane Designed with Hierarchical Core–Sheath Fiber Structure for Wearable Personal Thermal Management

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