The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Hierarchical graphene foam-based phase change materials with enhanced thermal conductivity and shape stability for efficient solar-to-thermal energy conversion and storage
Abstract
Recently, graphene foam (GF) with a three-dimensional (3D) interconnected network produced by template-directed chemical vapor deposition (CVD) has been used to prepare composite phase-change materials (PCMs) with enhanced thermal conductivity. However, the pore size of GF is as large as hundreds of micrometers, resulting in a remarkable thermal resistance for heat transfer from the PCM inside the large pores to the GF strut walls. In this study, a novel 3D hierarchical GF (HGF) is obtained by filling the pores of GF with hollow graphene networks. The HGF is then used to prepare a paraffin wax (PW)-based composite PCM. The thermal conductivity of the PW/HGF composite PCM is 87% and 744% higher than that of the PW/GF composite PCM and pure PW, respectively. The PW/HGF composite PCM also exhibits better shape stability than the PW/GF composite PCM, negligible change in the phase-change temperature, a high thermal energy storage density that is 95% of pure PW, good thermal reliability, and chemical stability with cycling for 100 times. More importantly, PW/HGF composite PCM allows light-driven thermal energy storage with a high light-to-thermal energy conversion and storage efficiency, indicating its great potential for applications in solar-energy utilization and storage.
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“Therefore, an approach to engineer the pore structure by growing a network of CNTs inside the pores, which further improves the thermal conductivity of the composite PCM compared with a composite PCM with only GF, was recently reported [1].”
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Metadata
- Authors
- Qi, G., Yang, J., Bao, R., Xia, D., Cao, M., Yang, W., Yang, M., & Wei, D.
- Venue
- Nano Research
- Publisher
- Tsinghua University Press
- Published
- 2016-12-22
- Volume
- 10
- Issue
- 3
- Pages
- 802-813
- ISSN
- 1998-0000 (ISSN-L)
- 1998-0124
- OpenAlex
- W2566642082
- Cited by
- 256
- References
- 4
- FWCI
- 17.41
- Type
- journal article
- Language
- en
- Open access
- closed
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