Projects per year
Abstract
Leakage-free phase change materials (PCM) are used as passive energy storage systems that thermoregulate indoor environments. In this research, we synthesized highly porous hybrid materials based on non-covalent physical interactions between (poly)ethylene glycol (PEG) and modified cellulose nanofibrils (CNF), namely lignin-containing CNF (LCNF) or acetylated CNF (ACNF). The PEG/CNF hybrid, termed phase change nanohybrids (PCN), were ultra-lightweight (0.022–0.043 g/cm3), mechanically resilient, and displayed a high latent energy storage, up to 204 J/g. The PCN systems (specific heat capacity as high as 2.24 J/g K) were effective in thermal regulating 2.23 °C with a 1 mm thickness coverage while maintaining thermal stability. The PCN also demonstrated favorable thermal management under excess solar heating, providing 33.5 °C of insulative protection with a 1.5 cm thick system. The PCNs have exceptional acoustic absorbance (100% absorbance for 1600 Hz and 50% at lower frequencies, 500 Hz). Trace metal oxide (TiO2) nanoparticles improved the PCN thermoregulating abilities, revealing desirable opportunities in multi-functional applications. Our biobased PCN is a promising insulation and passive energy storage alternative for thermal protection in smart building, electronic, packaging, energy storage system and aerospace sectors.
| Original language | English |
|---|---|
| Article number | 112337 |
| Number of pages | 11 |
| Journal | Solar Energy Materials and Solar Cells |
| Volume | 256 |
| Early online date | 27 Apr 2023 |
| DOIs | |
| Publication status | Published - 1 Jul 2023 |
| MoE publication type | A1 Journal article-refereed |
Funding
This research received funding from the Academy of Finland ( 343192 ), Business Finland ( 7428/31/2022 , PCMI project) the Canada Excellence Research Chair Program ( CERC-2018-00006 ) and Canada Foundation for Innovation (Project number 38623 ). The authors thank Monireh Imani for the preparation of lignin containing cellulose, Jose M. Cucharero (Lumir OY) for impedance measurements, Ayako Takagi for graphics, and Ari Seppälä for thermal conductivity measurement. This research utilized OtaNano Nanomicroscopy Center (NMC) and Bioeconomy and RawMatters research infrastructures.
Keywords
- Acoustic absorbance
- Cellulose nanofibril
- Insulation
- Latent heat storage
- Phase change material
- Thermoregulation
Fingerprint
Dive into the research topics of 'Leakage-free porous cellulose-based phase change cryogels for sound and thermal insulation'. Together they form a unique fingerprint.Projects
- 2 Finished
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PCMI: PCM Insulation
Yazdani McCord, R. (Principal investigator), Hu, H. (Project Member), Masood, A. (Project Member), Paganelli, Z. (Project Member), Aravamoudane, L. P. (Project Member), Mohanraj, D. (Project Member), Portin, R. (Project Member), Seppälä, A. (Project Member), Paavolainen, P. (Project Member), Kankkunen, A. (Project Member) & Anwaar, A. (Project Member)
01/01/2023 → 30/06/2024
Project: BF R2B
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Soma/Yazdani: Green engineering of sorption materials for seasonal thermal energy storage: Development, system implementation, and life cycle assessment
Yazdani McCord, R. (Principal investigator)
01/09/2021 → 31/08/2024
Project: RCF Postdoctoral Researcher
Equipment
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Bioeconomy Research Infrastructure
Seppälä, J. (Manager)
School of Chemical EngineeringFacility/equipment: Facility
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OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility