TY - JOUR
T1 - High temperature potentiometric hydrogen sensor based on BaCe0.6Zr0.3Y0.1O3-α-ZnO
AU - Lujan, Enric
AU - Hinojo, Antonio
AU - Colominas, Sergi
AU - Abellà, Jordi
N1 - Funding Information:
This work was supported by the Ministry of Science and Innovation of Spain, under grant number RTI2018–095045-B-I00.The authors wish to thank Dr. Carles Colominas and Ms. Neus Sala from IQS School of Engineering, Universitat Ramon Llull, for the XRD analysis. Enric Lujan wants to acknowledge the financial support received from the SUR of the DEC of the Generalitat de Catalunya [2021 FISDU 00136].
Funding Information:
This work was supported by the Ministry of Science and Innovation of Spain , under grant number RTI2018–095045-B-I00 .
Funding Information:
The authors wish to thank Dr. Carles Colominas and Ms. Neus Sala from IQS School of Engineering, Universitat Ramon Llull, for the XRD analysis. Enric Lujan wants to acknowledge the financial support received from the SUR of the DEC of the Generalitat de Catalunya [ 2021 FISDU 00136 ].
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2023/1/15
Y1 - 2023/1/15
N2 - One of the alternatives to carbon-based fuels is hydrogen. Hydrogen isotopes are expected to be used as a fuel for nuclear fusion power. The measurement of these isotopes in high-temperature environments (>350 °C) is of great interest. Electrochemical sensors based on solid-state electrolytes have been proved to be able to operate at elevated temperatures, with great physical and chemical stabilities. In the present work, BaCe0.6Zr0.3Y0.1O3-α (BCZY) was used as a proton-conducting solid-state electrolyte. The synthesized powder was shaped into pellets at 1400 °C for 30 h and 1650 °C for 6 h and adding 5 mol% ZnO as sintering aid at mild sintering conditions (1400 °C for 12 h). Electrochemical sensors were constructed and tested using these pellet shaped electrolytes. The sensors were used in a potentiometric configuration at 400 °C, 500 °C and 600 °C. Hydrogen concentrations in the working electrode ranged from 0.02 to 0.5 mbar H2 in Ar. The use of ZnO as sintering aid helped in the obtention of full dense ceramics, preserving the perovskite structure of the electrolyte. Moreover, the addition of ZnO yielded a sensor that practically fulfilled the Nernst equation and able to perform hydrogen measurements with a high accuracy and precision.
AB - One of the alternatives to carbon-based fuels is hydrogen. Hydrogen isotopes are expected to be used as a fuel for nuclear fusion power. The measurement of these isotopes in high-temperature environments (>350 °C) is of great interest. Electrochemical sensors based on solid-state electrolytes have been proved to be able to operate at elevated temperatures, with great physical and chemical stabilities. In the present work, BaCe0.6Zr0.3Y0.1O3-α (BCZY) was used as a proton-conducting solid-state electrolyte. The synthesized powder was shaped into pellets at 1400 °C for 30 h and 1650 °C for 6 h and adding 5 mol% ZnO as sintering aid at mild sintering conditions (1400 °C for 12 h). Electrochemical sensors were constructed and tested using these pellet shaped electrolytes. The sensors were used in a potentiometric configuration at 400 °C, 500 °C and 600 °C. Hydrogen concentrations in the working electrode ranged from 0.02 to 0.5 mbar H2 in Ar. The use of ZnO as sintering aid helped in the obtention of full dense ceramics, preserving the perovskite structure of the electrolyte. Moreover, the addition of ZnO yielded a sensor that practically fulfilled the Nernst equation and able to perform hydrogen measurements with a high accuracy and precision.
KW - BCZY
KW - High temperature
KW - Perovskite
KW - Potentiometric hydrogen sensor
KW - Solid-state electrolyte
UR - http://www.scopus.com/inward/record.url?scp=85141489674&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2022.132952
DO - 10.1016/j.snb.2022.132952
M3 - Article
AN - SCOPUS:85141489674
SN - 0925-4005
VL - 375
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
M1 - 132952
ER -