High energy storage density titanium nitride-pentaerythritol solid–solid composite phase change materials for light-thermal-electric conversion

Rongrong Luo, Liuwei Wang, Wei Yu, Feilong Shao, Haikuo Shen and Huaqing Xie

Applied Energy, 2023, vol. 331, issue C, No S0306261922016348

Abstract: To achieve the goal of carbon neutrality, efficient use of solar energy is feasible and imminent. The selection of phase change materials (PCMs) as energy storage media is an effective way to achieve practical utilization to solve the uncontinuity and unstability of solar energy. Solid-solid PCMs (SS-PCMs) have attracted attention due to their advantages of stable shape, no phase separation, and no corrosion. In this paper, cheap raw material pentaerythritol (PE) is selected as the energy storage medium. Titanium nitride (TiN) with localized surface plasmon resonance is used as light absorber and thermal conductive filler. The results show that phase transition enthalpy of 0.2 wt% TiN-composite phase change materials (CPCMs) is still as high as 287.8 J/g, which maintains 96.06 % energy storage density of PE. In addition, thermal conductivity of 0.2 wt% TiN-CPCMs is increased by 109.48 %, and photo-thermal conversion efficiency is as high as 90.66 %. Simultaneously, a thermoelectric harvester integrating thermoelectric generator (TEG) with SS-PCMs is proposed. The average maximum power of the TiN-CPCMs-TEG system is 59.26 % higher than that of the PE-TEG system. Total energy of system is also increased by 58.99 %, which lays the foundation for the application of mid-temperature heat collection engineering.

Keywords: Solid-solid composite phase change materials; LSPR; Photo-thermal conversion; Thermo-electric conversion (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261922016348
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:331:y:2023:i:c:s0306261922016348

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2022.120377

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().