Thermodynamic and electrochemical behavior of nickel in molten Li2CO3-Na2CO3 modified by addition of calcium carbonate

被引：36

作者：

Cassir, M ^{[1
]}

Olivry, M ^{[1
]}

Albin, V ^{[1
]}

Malinowska, B ^{[1
]}

Devynck, J ^{[1
]}

机构：

[1] Ecole Natl Super Chim Paris, Lab Electrochim & Chim Analyt, CNRS, URA 216, F-75231 Paris 05, France

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1998年 / 452卷 / 01期

关键词：

thermodynamic behavior; electrochemical behavior; nickel; Li+Na carbonate; potentiometry; voltammetry; SEM spectroscopy;

D O I：

10.1016/S0022-0728(98)00118-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The thermodynamic and electrochemical behavior of nickel species are investigated in Li + Na carbonate eutectic containing different amounts of calcium carbonate. NiO dissolution is predicted theoretically, and its solubility is determined experimentally by an electrochemical technique under P(CO2) = 1 atm. The addition of calcium increases the melt basicity and reduces the NiO solubility significantly. Chemical insertion and electrochemical intercalation of alkali ions (mostly Li+) in the NiO lattice are analyzed in Li + Na and Li + Na + Ca carbonate melts under P(CO2) = 0.1 atm + P(O-2) = 0.9 atm + P(CO2) = 0.3 atm + P(O-2) = 0.14 atm by potentiometry, voltammetry and SEM spectroscopy. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：127 / 137

页数：11

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