Abstract
A copper-copper sulfate electrode (CSE) was constructed and tested at elevated temperatures. Experimental cell potentials versus a silver-silver chloride electrode were compared against results from Gibbs energy minimization (GEM) calculations. After accounting for irreversible thermodynamic processes, experimental and calculated CSE potentials, were generally within 3% of the observed potential from 25 to 150 °C at 3 MPa. The CSE potentials changed by less than 20 mV with increasing temperature, compared to 120 mV for the silver-silver chloride electrode. With its repeatability and small temperature dependence, the CSE electrode appears to be a viable reference electrode for measuring in-situ real time cell potentials in aqueous phase-containing media at elevated temperature and pressure.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 96-106 |
| Number of pages | 11 |
| Journal | Electrochimica Acta |
| Volume | 221 |
| DOIs | |
| State | Published - Dec 10 2016 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Electrochemistry
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Copper-Copper Sulfate Reference Electrode for Operating in High Temperature and High Pressure Aqueous Environments. / Hall, Derek; Beck, Justin R.; Brand, Edward; Ziomek-Moroz, Margaret; Lvov, Serguei.
In: Electrochimica Acta, Vol. 221, 10.12.2016, p. 96-106.Research output: Contribution to journal › Article
TY - JOUR
T1 - Copper-Copper Sulfate Reference Electrode for Operating in High Temperature and High Pressure Aqueous Environments
AU - Hall, Derek
AU - Beck, Justin R.
AU - Brand, Edward
AU - Ziomek-Moroz, Margaret
AU - Lvov, Serguei
PY - 2016/12/10
Y1 - 2016/12/10
N2 - A copper-copper sulfate electrode (CSE) was constructed and tested at elevated temperatures. Experimental cell potentials versus a silver-silver chloride electrode were compared against results from Gibbs energy minimization (GEM) calculations. After accounting for irreversible thermodynamic processes, experimental and calculated CSE potentials, were generally within 3% of the observed potential from 25 to 150 °C at 3 MPa. The CSE potentials changed by less than 20 mV with increasing temperature, compared to 120 mV for the silver-silver chloride electrode. With its repeatability and small temperature dependence, the CSE electrode appears to be a viable reference electrode for measuring in-situ real time cell potentials in aqueous phase-containing media at elevated temperature and pressure.
AB - A copper-copper sulfate electrode (CSE) was constructed and tested at elevated temperatures. Experimental cell potentials versus a silver-silver chloride electrode were compared against results from Gibbs energy minimization (GEM) calculations. After accounting for irreversible thermodynamic processes, experimental and calculated CSE potentials, were generally within 3% of the observed potential from 25 to 150 °C at 3 MPa. The CSE potentials changed by less than 20 mV with increasing temperature, compared to 120 mV for the silver-silver chloride electrode. With its repeatability and small temperature dependence, the CSE electrode appears to be a viable reference electrode for measuring in-situ real time cell potentials in aqueous phase-containing media at elevated temperature and pressure.
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U2 - 10.1016/j.electacta.2016.10.143
DO - 10.1016/j.electacta.2016.10.143
M3 - Article
VL - 221
SP - 96
EP - 106
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -