Effect of Mg dissolution on cyclic voltammetry and open circuit potentiometry of molten MgCl2-KCl-NaCl candidate heat transfer fluid for concentrating solar power

被引：15

作者：

Choi, Suhee ^{[1
]}

Orabona, Nicole E. ^{[1
]}

Dale, Olivia R. ^{[1
]}

Okabe, Parker ^{[1
]}

Inman, Charles ^{[1
]}

Simpson, Michael F. ^{[1
]}

机构：

[1] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2019年 / 202卷

关键词：

Concentrating solar power system; Chloride salts; Magnesium; Hydroxide; Electrochemistry; THERMAL-ENERGY STORAGE; CHLORIDE SALTS; CORROSION; LICL; MITIGATION; IMPURITIES; REDUCTION; ALLOYS; PLANTS;

D O I：

10.1016/j.solmat.2019.110087

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

080707 [能源环境工程]; 082001 [油气井工程];

摘要：

Molten chloride salts have recently gained attention for application to heat transfer and thermal energy storage in concentrating solar power (CSP) plants. In this study, we studied the electrochemical effect of addition of hydroxide ions and/or dissolved metals added to MgCl2-KCl-NaCl salt mixture. Open circuit potentiometry indicated that the salt's redox potential increased with addition of hydroxide ions and decreased with the addition of soluble magnesium metal. Cyclic voltammetry indicated that a reduction peak associated with hydroxides vanished with addition of Mg-0. Hydrogen gas was evolved when a mixture of Mg metal and MgCl2-KCl-NaCl containing NaOH was heated to 650 degrees C. These results demonstrate the benefit and mechanism for redox potential control in this salt using dissolved Mg metal.

引用

页数：6

共 17 条

[1]

Electrochemical Reduction of Tungsten Oxide in LiC1-KC1 Molten Salt Eutectic using the Fluidised Cathode Process [J].