Data · dataset · 2026
Cu2+-polydopamine coordination enabled superior solar-thermal-electric conversion of boron nitride-based phase change composites
Listed in ScienceDB
The application of phase change materials (PCMs) in solar energy harvesting and storage is restricted by low thermal conductivity, liquid leakage, and insufficient solar-thermal conversion efficiency.
Description
Previous enhancement strategies often suffered from nanoparticle aggregation and limited control over nanoparticle growth. Herein, we utilized Cu2+-polydopamine (PDA) coordination to enable efficient in-situ growth of copper nanoparticles (CuNPs) on boron nitride (BN).
The resulting BN/PDA/Cu carrier exhibited a robust surface, with CuNPs forming a dense, coral-like multilayered nanocoating that significantly reduced interfacial thermal resistance. By adsorbing polyethylene glycol (PEG) with the carrier, the prepared PEG/BN/PDA/Cu composite exhibited a remarkable thermal conductivity of 5.741 W/(m∙K), 17.9 times higher than that of pure PEG. In addition, the composite exhibited a melting enthalpy of 170.8 J/g, excellent thermal reliability over 500 cycles, and maintained shape stability without leakage at 70°C. Furthermore, the synergy of PDA and CuNPs substantially enhanced the solar-thermal-electric conversion performance of the composite.
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Under 100 mW/cm2 sunlight, the composite achieved an outstanding solar-thermal conversion efficiency of 95.1% and a stable current output of 62 mA. Compared to the conventional solution deposition method, the PDA-enabled in-situ growth method significantly improved both the quality and quantity of CuNPs anchored on the carrier surface, thereby further enhancing the thermal conductivity and solar-thermal conversion efficiency of the composite.
Moreover, our method used CuNPs as a cost-effective enhancer and prevented their aggregation and settling during long-term thermal cycles. The developed phase change composites showcased great potential for advanced solar energy harvesting and thermal management.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.36648 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
- Inferred from text
- Chemical engineering 71%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.36648 | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].anzsrc:group:4004 | enrichment · scidb cn | taxonomy-embedding@1.0.0 | title+keywords+description (71%) |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |