Yttrium-doped Sb2Te as high speed phase-change materials with good thermal stability

2019 ◽  
Vol 247 ◽  
pp. 60-62 ◽  
Author(s):  
Tao Li ◽  
Liangcai Wu ◽  
Yong Wang ◽  
Guangyu Liu ◽  
Tianqi Guo ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
High Speed ◽  
Phase Change Materials ◽  
Good Thermal Stability

Analysis on Application Prospect of Shape-Stabilized Phase Change Materials in Asphalt Pavement

2013 ◽  
Vol 357-360 ◽  
pp. 1277-1281 ◽  
Author(s):  
Li Hong He ◽  
Jing Ruo Li ◽  
Hong Zhou Zhu
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
Phase Change Materials ◽  
Asphalt Pavement ◽  
Driving Safety ◽  
Maintenance Cost ◽  
Chemical Compatibility ◽  
Good Thermal Stability ◽  
Large Phase ◽  
And Control

Blends of asphalt and shape-stabilized phase change materials (SSPCM) were prepared by physical blending. Heat storage and thermal stability of asphalt-SSPCM blends were investigated by DSC and TG, chemical compatibility of asphalt-SSPCM blends was characterized by FT-IR, and the application feasibility of SSPCM in asphalt pavement was explored. The results show that asphalt-SSPCM blends have large phase change enthalpy, good thermal stability and chemical compatibility. Based on phase change theoretical analysis and numerical calculation, SSPCM applied in asphalt pavement can actively regulate and control pavement temperature using solar energy conversion or storage, lighten the asphalt pavement diseases related temperatures, enhance the performance of and prolong the service life of asphalt pavement, lower repair and maintenance cost, and enhance driving safety. At the same time, it can also saving energy sources and protect environment. Therefore, SSPCM have broad application foregrounds in asphalt pavement.

The Experimental Research on the Thermal Properties of Shape-Stabilized Phase Change Materials

2013 ◽  
Vol 291-294 ◽  
pp. 1159-1163
Author(s):  
Quan Ying Yan ◽  
Li Hang Yue ◽  
Li Li Jin ◽  
Ran Huo ◽  
Lin Zhang
Keyword(s):  
Thermal Stability ◽  
Fatty Acid ◽  
Phase Change ◽  
Phase Change Materials ◽  
Liquid Paraffin ◽  
Capric Acid ◽  
Good Thermal Stability ◽  
Change Material ◽  
Thermal Stability Of ◽  
Better Than

This paper investigated the thermal performance of shape stabilized phase change paraffin and shape-stabilized phase change fatty acid. And the PCMs are mixtures of 60% 46# paraffin and 40% liquid paraffin, 65 % 48# paraffin and 35% liquid paraffin,30%capric acid and 70% lauric acid, 30%capric acid and 70% myristic acid. Support material is high-density polyethylene. The results in this paper show that: Thermal stability of both of the two types of phase change materials are good, thermal stability of shape stabilized phase change fatty acid is better than that of paraffin. Results in this paper can provide references and basis for the application of phase change material walls in the practice building.

Research of Thermo-Regulating Fibers Based on the Crosslinked Composite Phase Change Materials of PEGA

2013 ◽  
Vol 821-822 ◽  
pp. 107-110
Author(s):  
Hong Zhang ◽  
Yan Ping Fang ◽  
Ping Guo ◽  
Qian Qian Wang ◽  
Jing Guo ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
Melt Spinning ◽  
Phase Change Materials ◽  
Breaking Strength ◽  
The Novel ◽  
Good Thermal Stability ◽  
Composite Phase Change Materials ◽  
Crosslinked Networks

The novel form-stable composite phase change materials (PCMs) of crosslinked PEGA and P(PEGA-HAM)/PEG gels were synthesized, which based on PEGA . Using crosslinked PEGA and P(PEGA-HAM)/PEG gels as the working substance , PP/PCM thermo-regulating fibers were prepared by blends via melt spinning respectively. TGA results indicate that the crosslinked form-stable PCMs have good thermal stability. The morphology of the surface of PP/PCM thermo-regulating fibers smooth mainly by SEM. The breaking strength of thermo-regulating fibers first increases and then decreases when increased some content of PCM. DSC results indicate the phase enthalpy of PEGA crosslinked gel and its the blend fibers with PP are 122.97J/g and 13.83J/g, while that of P(PEGA-HAM)/PEG crosslinked networks gel and its the blend fibers with PP are 107.48J/g and 4.62J/g respectively.

scholarly journals Exploring ultrafast threshold switching in In3SbTe2 phase change memory devices

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Nishant Saxena ◽  
Christoph Persch ◽  
Matthias Wuttig ◽  
Anbarasu Manivannan
Keyword(s):  
Thermal Stability ◽  
Electric Field ◽  
Phase Change ◽  
High Speed ◽  
Phase Change Materials ◽  
Phase Change Memory ◽  
Threshold Switching ◽  
Experimental Findings ◽  
Thermal Stability Of ◽  
Change Memory

AbstractPhase change memory (PCM) offers remarkable features such as high-speed and non-volatility for universal memory. Yet, simultaneously achieving better thermal stability and fast switching remains a key challenge. Thus, exploring novel materials with improved characteristics is of utmost importance. We report here, a unique property-portfolio of high thermal stability and picosecond threshold switching characteristics in In3SbTe2 (IST) PCM devices. Our experimental findings reveal an improved thermal stability of amorphous IST compared to most other phase change materials. Furthermore, voltage dependent threshold switching and current-voltage characteristics corroborate an extremely fast, yet low electric field threshold switching operation within an exceptionally small delay time of less than 50 picoseconds. The combination of low electric field and high speed switching with improved thermal stability of IST makes the material attractive for next-generation high-speed, non-volatile memory applications.

CrxSb2Te1 materials for phase change memory with high speed and good thermal stability performance

2015 ◽  
Vol 26 (6) ◽  
pp. 4138-4143 ◽  
Author(s):  
Qing Wang ◽  
Bo Liu ◽  
Yangyang Xia ◽  
Zhonghua Zhang ◽  
Xinglong Ji ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
High Speed ◽  
Phase Change Memory ◽  
Good Thermal Stability ◽  
Stability Performance ◽  
Change Memory

scholarly journals Pt-Sb2Te as high speed phase-change materials with excellent thermal stability

2021 ◽  
Author(s):  
Zhihao Song ◽  
Guo Junmei ◽  
Jialin Chen ◽  
Ming Wen ◽  
Zhilong Tan ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
High Speed ◽  
Phase Change Materials ◽  
Excellent Thermal Stability

scholarly journals Enhancing Thermal Conductivity and Photo-Driven Thermal Energy Charging/Discharging Rate of Annealed CMK-3 Based Phase Change Material

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 364 ◽  
Author(s):  
Yanfeng Chen ◽  
Cuiyin Liu ◽  
Yue Situ ◽  
Jian Liu ◽  
Hong Huang
Keyword(s):  
Thermal Conductivity ◽  
Thermal Stability ◽  
Phase Change ◽  
Phase Change Material ◽  
Phase Change Materials ◽  
Solar Spectrum ◽  
Heating System ◽  
Visible Range ◽  
Good Thermal Stability ◽  
Change Material

In this work, the CMK-3 is successfully prepared with SBA-15 as the template and first annealed to 2000 °C to improve thermal conductivity. The annealed CMK-3 has a thermal conductivity of 6.981 W m−1 K−1 higher than un-annealed CMK-3. The annealed CMK-3 is used to encapsulate the RT44HC, and RT44HC/annealed CMK-3 has 10-fold of thermal conductivity and enhanced thermal stability than RT44HC. The RT44HC/annealed CMK-3 has a large melting enthalpy of 177.8 J g−1 and good thermal stability. The RT44HC/annealed CMK-3 has optical absorptive coefficient of visible range of solar spectrum, which identify seven-fold higher than RT44HC. The RT44HC/annealed CMK-3 has great photo-thermal performance, and the photo-driven energy charging and discharging rate of RT44HC/annealed CMK-3 is almost 30-fold larger than the RT44HC. The results show that the annealed CMK-3 is a great mesoporous carbon nanomaterial for phase change materials and the annealed CMK-3 based phase change material has great potential in solar thermal utilizations such as solar water heating system and solar heating building systems.

Study on the Thermal Stability of Expanded Graphite/Stearic Acid Composite Phase Change Materials

2017 ◽  
Vol 727 ◽  
pp. 450-454 ◽  
Author(s):  
Yun Tao Li ◽  
Hua Yan ◽  
Si Xie Zhao
Keyword(s):  
Thermal Stability ◽  
Stearic Acid ◽  
Phase Change ◽  
Thermal Cycle ◽  
Phase Change Materials ◽  
Expanded Graphite ◽  
Good Thermal Stability ◽  
Composite Phase Change Materials ◽  
Reticular Structure ◽  
Thermal Stability Of

The expanded graphite/stearic acid composite phase change materials were prepared with stearic acid as phase change materials and expanded graphite as the carrier by the adsorption and encapsulation of expanded graphite. The thermal stability of composite phase change materials were analyzed by TG, XRD and SEM. Results showed that expanded graphite has reticular structure to encapsulate the stearic acid, improving its stability of thermal decomposition, thermal cycle and thermal chemical. When the content of expanded graphite is 10wt. %, the composite phase change materials exhibit good thermal stability, and can meet the requirements of temperature control under different conditions.

Ruthenium doped Ge2Sb2Te5 nanomaterial as fast speed phase-change materials with good thermal stability

2021 ◽  
pp. 108176
Author(s):  
Zhilong Tan ◽  
Ming Wen ◽  
Junmei Guo ◽  
Jialin Chen ◽  
Xiaofei Wu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Phase Change ◽  
Phase Change Materials ◽  
Good Thermal Stability ◽  
Fast Speed
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