Fabrication of Self-Cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentrated Solar Power Applications

Raj Kumar Bera; Yaniv Binyamin; Cathy Frantz; Ralf Uhlig; Shlomo Magdassi; Daniel Mandler

doi:10.1002/ente.202000699

Fabrication of Self-Cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentrated Solar Power Applications

Raj Kumar Bera, Yaniv Binyamin, Cathy Frantz, Ralf Uhlig, Shlomo Magdassi^*, Daniel Mandler^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

A near-perfect black solar absorber made of carbon nanotubes (CNTs) prepared by a low-cost wet-deposition method on a reflective metal surface for mid-temperature non-evacuated concentrated solar power (CSP) applications is demonstrated. The dispersed CNTs in an alumina–silica matrix exhibit an absorptance of 0.985 in the entire solar spectrum and emittance of 0.90 in the infrared (IR) region. The coating shows high durability and is super-hydrophilic (0° contact angle) after plasma treatment, without affecting the solar absorptance and excellent coating adhesion. The efficiency of the coating is evaluated by analytical models, which implies that it has higher efficiency at low temperature and at a high solar concentration ratio than that of previously reported selective coatings.

Original language	English
Article number	2000699
Journal	Energy Technology
Volume	8
Issue number	12
DOIs	https://doi.org/10.1002/ente.202000699
State	Published - Dec 2020

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

Keywords

absorptance
carbon nanotubes
concentrated solar power
solar absorber coatings
solar-thermal coatings

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/ente.202000699

Cite this

@article{e26e7311d8db465a91950e0419214510,

title = "Fabrication of Self-Cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentrated Solar Power Applications",

abstract = "A near-perfect black solar absorber made of carbon nanotubes (CNTs) prepared by a low-cost wet-deposition method on a reflective metal surface for mid-temperature non-evacuated concentrated solar power (CSP) applications is demonstrated. The dispersed CNTs in an alumina–silica matrix exhibit an absorptance of 0.985 in the entire solar spectrum and emittance of 0.90 in the infrared (IR) region. The coating shows high durability and is super-hydrophilic (0° contact angle) after plasma treatment, without affecting the solar absorptance and excellent coating adhesion. The efficiency of the coating is evaluated by analytical models, which implies that it has higher efficiency at low temperature and at a high solar concentration ratio than that of previously reported selective coatings.",

keywords = "absorptance, carbon nanotubes, concentrated solar power, solar absorber coatings, solar-thermal coatings",

author = "Bera, {Raj Kumar} and Yaniv Binyamin and Cathy Frantz and Ralf Uhlig and Shlomo Magdassi and Daniel Mandler",

note = "Publisher Copyright: {\textcopyright} 2020 Wiley-VCH GmbH",

year = "2020",

month = dec,

doi = "10.1002/ente.202000699",

language = "אנגלית",

volume = "8",

journal = "Energy Technology",

issn = "2194-4288",

publisher = "Wiley - VCH Verlag GmbH & CO. KGaA",

number = "12",

}

TY - JOUR

T1 - Fabrication of Self-Cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentrated Solar Power Applications

AU - Bera, Raj Kumar

AU - Binyamin, Yaniv

AU - Frantz, Cathy

AU - Uhlig, Ralf

AU - Magdassi, Shlomo

AU - Mandler, Daniel

PY - 2020/12

Y1 - 2020/12

N2 - A near-perfect black solar absorber made of carbon nanotubes (CNTs) prepared by a low-cost wet-deposition method on a reflective metal surface for mid-temperature non-evacuated concentrated solar power (CSP) applications is demonstrated. The dispersed CNTs in an alumina–silica matrix exhibit an absorptance of 0.985 in the entire solar spectrum and emittance of 0.90 in the infrared (IR) region. The coating shows high durability and is super-hydrophilic (0° contact angle) after plasma treatment, without affecting the solar absorptance and excellent coating adhesion. The efficiency of the coating is evaluated by analytical models, which implies that it has higher efficiency at low temperature and at a high solar concentration ratio than that of previously reported selective coatings.

AB - A near-perfect black solar absorber made of carbon nanotubes (CNTs) prepared by a low-cost wet-deposition method on a reflective metal surface for mid-temperature non-evacuated concentrated solar power (CSP) applications is demonstrated. The dispersed CNTs in an alumina–silica matrix exhibit an absorptance of 0.985 in the entire solar spectrum and emittance of 0.90 in the infrared (IR) region. The coating shows high durability and is super-hydrophilic (0° contact angle) after plasma treatment, without affecting the solar absorptance and excellent coating adhesion. The efficiency of the coating is evaluated by analytical models, which implies that it has higher efficiency at low temperature and at a high solar concentration ratio than that of previously reported selective coatings.

KW - absorptance

KW - carbon nanotubes

KW - concentrated solar power

KW - solar absorber coatings

KW - solar-thermal coatings

UR - http://www.scopus.com/inward/record.url?scp=85092699981&partnerID=8YFLogxK

U2 - 10.1002/ente.202000699

DO - 10.1002/ente.202000699

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:85092699981

SN - 2194-4288

VL - 8

JO - Energy Technology

JF - Energy Technology

IS - 12

M1 - 2000699

ER -

Fabrication of Self-Cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentrated Solar Power Applications

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this