Thermal performance enhancement of composite phase change materials (PCM) using graphene and carbon nanotubes as additives for the potential application in lithium-ion power battery

Zou, Deqiu; Ma, Xianfeng; Liu, Xiaoshi; Zheng, Pengjun; Yun-ping, HU

doi:10.1016/j.ijheatmasstransfer.2017.12.024

Cited by 355 publications

(92 citation statements)

References 45 publications

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“…However, the lower thermal conductivity limits the application of PCM. In order to overcome this problem, the scholars have attempted to add the high thermal conductive materials into the PCM to make new composite phase change materials (CPCM) to improve the thermal performance of thermal energy storage system [1][2][3]. CPCM can not only overcome the defects of single organic or inorganic PCM but also improve the application effect and application scope of PCM [4].…”

Section: Introductionmentioning

confidence: 99%

“…They found that the addition of additive increased the charge rate, but can also hinder the heat convection of the CPCM. Zou et al [1] found that compared with MWCNT, the addition of graphene has a greater increase in thermal conductivity of CPCM. In addition, the variation of latent heat is different from the theoretical calculation, which is lower than the theoretical value.In recent years, although extensive research has been carried out on graphite-based additive CPCM, there is a lack of comparative analysis of the thermal properties of different graphite-based CPCM at a relatively low load, and the analysis on the melting point of phase change materials is also rare.…”

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Preparation and Performance Analysis of Graphite Additive/Paraffin Composite Phase Change Materials

Dong

Zhang

et al. 2019

Processes

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In the thermal energy storage system, the thermal properties of phase change materials (PCM) have a great influence on the system performance. In this paper, paraffin-based composite phase change material with different graphite additive (expanded graphite, EG; graphene, GR; and graphene oxide, GO) and different concentrations (0.5 to 2.0%) are manufactured by a two-step method combining mechanical agitation and ultrasonic vibration. The characteristics of charge/discharge processes are studied, and the thermophysical properties are measured by T-history method. The experimental results show that the thermal conductivity and heat charge rate of the composite PCM are effectively improved by adding the graphite additive to the PCM, and the addition of additives can improve the melting point of the material. When the same graphite additive is added, the higher the concentration, the higher the thermal conductivity of the composite PCM, and the latent heat decreases with the increase of concentration. When adding the same amount of carbon additives, the graphene/paraffin composite PCM has the highest heat charge/discharge rate and thermal conductivity. It is finally concluded that graphene is the most promising candidate for heat transfer enhancement of paraffin among three carbon additives even though the EG-based composite PCM gives relatively high latent heat.Processes 2019, 7, 447 2 of 12 carbon-based materials as additives, local and foreign scholars have also conducted in-depth research. Mehrali et al. [18] studied the preparation, characterization, and thermal properties of graphene oxide sheets/paraffin CPCM prepared by vacuum impregnation. The experimental results showed that the latent heat of the CPCM is 63.76 kJ/kg. The thermal conductivity of the new form-stable CPCM had a high increase from 0.305 to 0.985 (W/m·K). Xiao et al. [19] prepared graphite foam/paraffin composite with vacuum assistance. The structure and thermophysical properties of the CPCM were characterized. The results indicated that the thermal conductivity and effusivity of the CPCM are much higher than those of pure paraffin. Xia et al. [20] prepared and characterized an expanded graphite/paraffin CPCM in which the additive amount of expanded graphite (EG) is 0-10% by weight. The test system shows that the heat charge and discharge rate of EG/paraffin composites are greatly improved compared with pure paraffin. Chen et al.[21] prepared a dodecane/expanded graphite CPCM. The experimental results show that the latent heat of the CPCM decreases with the increase of expanded graphite, and the thermal conductivity increases with the mass fraction of the expanded graphite. Kant et al. [22] carried out the numerical investigation for the melting of graphene nanoparticles CPCM. They found that the addition of additive increased the charge rate, but can also hinder the heat convection of the CPCM. Zou et al. [1] found that compared with MWCNT, the addition of graphene has a greater increase in thermal conductivity of CPCM. In addition, the var...

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Preparation and Performance Analysis of Graphite Additive/Paraffin Composite Phase Change Materials

Dong

Zhang

et al. 2019

Processes

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“…In addition, inherently reinforced bers have been obtained through directly feeding articial additives to silkworms or spiders. [15][16][17] Single-or multiple-walled carbon nanotubes (SWCNTs/ MWCNTs) have been widely used in transistors, 23,24 batteries, 25 and reinforcing agents, 26,27 due to their excellent electrical, mechanical and catalytic properties. By lling CNTs into silk bers, the nanotubes with structural translational symmetry and structural exibility endow the bers with improved electrical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Obtaining high mechanical performance silk fibers by feeding purified carbon nanotube/lignosulfonate composite to silkworms

et al. 2019

RSC Adv.

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“…To overcome this defect, many researchers have improved the thermal properties of paraffin by adding high thermal conductivity particles to paraffin. Minqiang Pan et al [14,15] filled around the cylindrical battery with PW and sintered copper fiber for power battery discharge test, and compared with natural air-cooled, pure paraffin, and pure metal foam heat dissipation effect. Experiments have shown that the combination of PCM and copper foam can improve the heat transfer performance of the battery pack and reduce the temperature range.…”

Section: Introductionmentioning

confidence: 99%

Study of Thermal Management System Using Composite Phase Change Materials and Thermoelectric Cooling Sheet for Power Battery Pack

et al. 2019

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Scientific and reasonable battery thermal management systems contribute to improve the performance of a power battery, prolong its life of service, and improve its safety. Based on TAFEL-LAE895 type 100Ah ternary lithium ion power battery, this paper is conducted on charging and discharging experiments at different rates to study the rise of temperature and the uniformity of the battery. Paraffin can be used to reduce the surface temperature of the battery, while expanded graphite (EG) is added to improve the thermal conductivity and viscosity of the composite phase change material (CPCM), and to reduce the fluidity after melting. With the increase of graphite content, the heat storage capacity of phase change material (PCM) decreases, which affects the thermal management effect directly. Therefore, this paper combines heat pipe and semiconductor refrigeration technology to transform heat from the inner CPCM to the thermoelectric cooling sheet for heat dissipation. The results show that the surface temperature of the battery can be kept within a reasonable range when discharging at high rate. The temperature uniformity of the battery is improved and the energy of the battery is saved.

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Thermal performance enhancement of composite phase change materials (PCM) using graphene and carbon nanotubes as additives for the potential application in lithium-ion power battery

Cited by 355 publications

References 45 publications

Preparation and Performance Analysis of Graphite Additive/Paraffin Composite Phase Change Materials

Preparation and Performance Analysis of Graphite Additive/Paraffin Composite Phase Change Materials

Obtaining high mechanical performance silk fibers by feeding purified carbon nanotube/lignosulfonate composite to silkworms

Study of Thermal Management System Using Composite Phase Change Materials and Thermoelectric Cooling Sheet for Power Battery Pack

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