Tailoring Carbon Nanotube Density for Modulating Electro-to-Heat Conversion in Phase Change Composites
Abstract
We report a carbon nanotube array-encapsulated phase change composite in which the nanotube distribution (or areal density) could be tailored by uniaxial compression. The n-eicosane (C20) was infiltrated into the porous array to make a highly conductive nanocomposite while maintaining the nanotube dispersion and connection among the matrix with controlled nanotube areal density determined by the compressive strains along the lateral direction. The resulting electrically conductive composites can store heat at driven voltages as low as 1 V at fast speed with high electro-to-heat conversion efficiencies. Increasing the nanotube density is shown to significantly improve the polymer crystallinity and reduce the voltage for inducing the phase change process. Our results indicate that well-organized nanostructures such as the nanotube array are promising candidates to build high-performance phase change composites with simplified manufacturing process and modulated structure and properties.
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CNTA-C20 composite PCMs achieved an electric-to-thermal conversion efficiency of 74.7% at 1.3 V.
“The electric‐to‐thermal conversion efficiency of the CNTA‐C20 composite PCMs was 74.7% at 1.3 V.”
From Carbon-Based Composite Phase Change Materials for Thermal Energy Storage, Transfer, and Conversion (2021) · cites this paper as [78]
Simple carbonization strategies with biomass materials are promising for optimizing the thermal performance of carbon-based composite PCMs and achieving economic and environmental protection.
“To optimize the thermal performance of carbon‐based composite PCMs and achieve the goal of economic and environmental protection,[ 54 , 78 , 139 , 140 ] simple carbonization strategies with biomass materials have shown promising results, as these materials can be transformed into PC materials.[ 78 , 141 , 142 ]”
From Carbon-Based Composite Phase Change Materials for Thermal Energy Storage, Transfer, and Conversion (2021) · cites this paper as [78]
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- Authors
- Liu, Z., Zou, R., Lin, Z., Gui, X., Chen, R., Lin, J., Shang, Y., & Cao, A.
- Affiliations
- Peking University (CN)
- Sun Yat-sen University (CN)
- Corresponding author
- Zou, Ruqiang
- Cao, Anyuan
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-08-06
- Volume
- 13
- Issue
- 9
- Pages
- 4028-4035
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2317634532
- Cited by
- 165
- References
- 0
- Citations by year
- 2026: 9 · 2025: 12 · 2024: 14 · 2023: 9 · 2022: 16 · 2021: 17 · 2020: 16 · 2019: 20 · 2018: 12 · 2017: 12 · 2016: 11 · 2015: 8 · 2014: 8 · 2013: 1
- FWCI
- 12.37
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Nano Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Phase Change Materials Research
- Physical Sciences › Engineering › Biomedical Engineering › Dielectric materials and actuators
- Physical Sciences › Materials Science › Materials Chemistry › Carbon Nanotubes in Composites
- Keywords
- carbon nanotube arrays, phase change materials, n-eicosane, uniaxial compression, conductive composites, polymer crystallinity, latent heat storage, composite phase change materials
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