Issue 4/2019 - Breakthrough in solar absorbing coating research

Recently, Gao Xianghu, associate researcher and researcher Liu Gang, Research and Development Center of Environmental Materials and Ecological Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, broke through the foreign technological blockade and made important progress in the research field of high-temperature solar absorption coatings for tower thermal power generation, and developed a high-temperature solar spectral selective absorption coating
.

The high-temperature solar absorption coating prepared by this coating has good spectral selectivity
.
The absorption rate of solar energy under high temperature conditions can reach up to 0.
98, the emissivity can be less than 0.
35, and has excellent long-term high temperature thermal stability, corrosion resistance, water resistance, thermal shock resistance and cold and heat alternating properties, and the comprehensive performance (especially optical performance) meets the current demand for the performance of
tower solar thermal power generation high-temperature solar absorption coating.
Compared with foreign monopoly products, the coating can effectively improve the photothermal conversion efficiency and power station income
.
At the same time, the coating can be applied to different base surfaces such as low carbon steel, stainless steel, nickel-based alloy, etc.
, and also has important application value
in heavy oil exploitation, seawater desalination, heating, solar boilers and other fields.