Graphene-enhanced hybrid phase change materials for thermal management of Li-ion batteries

Goli, Pradyumna; Legedza, Stanislav; Dhar, Aditya; Salgado, Ruben; Renteria, Jacqueline; Balandin, Alexander A.

doi:10.1016/j.jpowsour.2013.08.135

Cited by 443 publications

(226 citation statements)

References 39 publications

(40 reference statements)

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“…The pressure between the two surfaces was fixed at 100 kPa in all measurements. The TIM function is reducing the In the present and previous studies of graphene-enhanced TIMs, we verified that mixing and vacuuming of commercial TIMs without addition of graphene have not improved their thermal conductivity [34,37,41,43]. These tests have been performed to establish that graphene fillers are responsible for the improved apparent thermal conductivity rather than additional mixing and vacuuming processing steps by themselves.…”

Section: Testing Of the Photovoltaic Solar Cellssupporting

confidence: 68%

“…One should note that, even if the joined surfaces are polished to perfection, the thermal boundary resistance (TBR) will still exist at the interface of two materials owing to the mismatch in their acoustic phonon properties. Thermal interface materials (TIMs) or thermal phase change materials (PCMs) perform the task of reducing thermal resistance between two surfaces and facilitating heat transfer between the heat generating device and a heat sink [33][34][35][36][37][38][39][40]. In this paper, we demonstrate that the thermal management of concentrator multi-junction solar cells can be substantially improved by enhancing properties of TIMs via incorporation of graphene [41].…”

Section: Introductionmentioning

confidence: 99%

“…This material has proven to have an unusually high thermal conductivity with intrinsic values in the range of 2000 to 5000 W/mK near room temperature [46]. This is an order of magnitude larger than pure silver [33][34][35]. The thermal conductivity of graphene flakes reduces with decreasing lateral dimensions of the flakes and upon contact with the base or matrix material.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Management of Concentrated Multi-Junction Solar Cells with Graphene-Enhanced Thermal Interface Materials

2017

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Abstract:We report results of experimental investigation of temperature rise in concentrated multi-junction photovoltaic solar cells with graphene-enhanced thermal interface materials. Graphene and few-layer graphene fillers, produced by a scalable environmentally-friendly liquid-phase exfoliation technique, were incorporated into conventional thermal interface materials. Graphene-enhanced thermal interface materials have been applied between a solar cell and heat sink to improve heat dissipation. The performance of the multi-junction solar cells has been tested using an industry-standard solar simulator under a light concentration of up to 2000 suns. It was found that the application of graphene-enhanced thermal interface materials allows one to reduce the solar cell temperature and increase the open-circuit voltage. We demonstrated that the use of graphene helps in recovering a significant amount of the power loss due to solar cell overheating. The obtained results are important for the development of new technologies for thermal management of concentrated photovoltaic solar cells.

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Section: Testing Of the Photovoltaic Solar Cellssupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermal Management of Concentrated Multi-Junction Solar Cells with Graphene-Enhanced Thermal Interface Materials

2017

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“…The high thermal conductivity of graphene is useful for transporting heat out of electronic transistor devices; thus, graphene can be used to enhance the thermal transport capability of some composites [156][157][158][159][160][161][162][163][164]. Current transistors operate at very high speeds and are damaged by the inevitable Joule heating if the generated heat energy is not pumped out effectively.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Graphene versus MoS2: A short review

Jiang

2015

Front. Phys.

183

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Graphene and MoS 2 are two well-known quasi two-dimensional materials. This review presents a comparative survey of the complementary lattice dynamical and mechanical properties of graphene and MoS 2 , which facilitates the study of graphene/MoS 2 heterostructures. These hybrid heterostructures are expected to mitigate the negative properties of each individual constituent and have attracted intense academic and industrial research interest.

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“…steam-water, ice-water, etc.) [6][7][8].The high latent heat of the PCMs and their relatively lower phase change temperature are the core properties which have interested researchers for the aforementioned applications [9] . Despite key desirable properties of PCMs (high energy-storage density and isothermal characteristics) [10], their low thermal conductivity [11,12] remains the major bottleneck for many applications.…”

mentioning

confidence: 99%

Effect of carbon-based hybrid nano-fillers on the thermal conductivity of PCM composites

Shahid

Ahzi

Abdala

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. PCMs show great promise as thermal energy storage (TES) medium; however, their low thermal conductivity presents a major bottleneck for their potential application. Enhancement of the thermal conductivity of a paraffin based PCM material using GNP in combination with CNF, CNTs and TRG was investigated in this work. SEM was used to qualitatively assess the dispersion & distribution of the hybrid-nanofillers. DSC was used to determine the melting temperature, thermal capacity and latent heat, whereas thermal conductivity was measured using Hot Disk TPS Thermal Conductivity Instrument (TPS2500S). An overall increase by 143%, 158% and 174% in thermal conductivity and 179%, 193% and 214% in thermal diffusivity was observed for 2 wt.% hybrid loading of TRG, CNT and CNF respectively (pure PCM as ref.). Furthermore, the contribution of the CNF and CNT hybridfillers was evaluated to increase the composite PCM thermal conductivity by 122% & 110%, and diffusivity by 117% & 105% respectively (10%-GNP as ref.). IntroductionEfficient energy storage and transfer has been perhaps the most challenging hurdle in the energy industry at the moment. The need to conserve energy and improve its utilization is increasing day by day with the increase in energy demand and growing notion of sustainability. The focus more recently, especially in Qatar, has been on sustainable alternates (i.e. Solar) to meet the local energy demand [1]. Phase change material (PCM) based latent heat storage systems have emerged as a very effective technique for thermal management systems [2] and have gathered significant interest in applications like solar energy systems, thermal energy storage (TES), active and passive cooling of PVs and electronic devices, etc. [3][4][5]. Thermal energy can be stored via two basic techniques: Sensible Heat Storage and Latent Heat Storage. In the former technique, the temperature of the storage material varies with stored energy, whereas in the latter, the storage material stores energy via phase change (i.e. steam-water, ice-water, etc.) [6][7][8].The high latent heat of the PCMs and their relatively lower phase change temperature are the core properties which have interested researchers for the aforementioned applications [9] . Despite key desirable properties of PCMs (high energy-storage density and isothermal characteristics) [10], their low thermal conductivity [11,12] remains the major bottleneck for many applications. This paper investigates the effect of various carbon-based hybrid nano-fillers with different physical dimensions and features on the thermal conductivity and diffusivity of paraffin-based PCM nanocomposites.

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Graphene-enhanced hybrid phase change materials for thermal management of Li-ion batteries

Cited by 443 publications

References 39 publications

Thermal Management of Concentrated Multi-Junction Solar Cells with Graphene-Enhanced Thermal Interface Materials

Thermal Management of Concentrated Multi-Junction Solar Cells with Graphene-Enhanced Thermal Interface Materials

Graphene versus MoS2: A short review

Effect of carbon-based hybrid nano-fillers on the thermal conductivity of PCM composites

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