“…[1,2] Moreover, chloride salts have a serious corrosion attack on the structural materials due to hygroscopicity, which has a great impact on the overall performance of the TES system. Compared with the chloride salt, that is, NaCl-KCl, [3,4] LiCl-KCl, [5,6] NaCl-KCl-MgCl 2 , [7,8] NaCl-MgCl 2 , [9,10] KCl-MgCl 2 , [11,12] and NaCl-KCl-FeCl 3 , molten salts with good thermophysical properties have a lower melting point (~140°C) and lower cost, and thus serves as a candidate for heat transfer and storage material in the TES and concentrated solar power (CSP) system. [13,14] The corrosion of the structural materials in chloride salt is quite important and is cause for wide concern, as it is directly related to the lifespan of the structural materials, [9,[15][16][17][18] and in turn the safety of the whole system.…”