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Sensors 2009, 9(11), 8884-8895; doi:10.3390/s91108884

Resistive Oxygen Sensor Using Ceria-Zirconia Sensor Material and Ceria-Yttria Temperature Compensating Material for Lean-Burn Engine

National Institute of Advanced Industrial Science and Technology (AIST), Advanced Manufacturing Research Institute, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan
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Received: 14 September 2009 / Revised: 13 October 2009 / Accepted: 2 November 2009 / Published: 5 November 2009
(This article belongs to the Section Chemical Sensors)
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Abstract

Temperature compensating materials were investigated for a resistive oxygen sensor using Ce0.9Zr0.1O2 as a sensor material for lean-burn engines. The temperature dependence of a temperature compensating material should be the same as the sensor material; therefore, the Y concentration in CeO2-Y2O3 was optimized. The resistance of Ce0.5Y0.5O2-δ was independent of the air-to-fuel ratio (oxygen partial pressure), so that it was confirmed to function as a temperature compensating material. Sensor elements comprised of Ce0.9Zr0.1O2 and Ce0.5Y0.5O2-δ were fabricated and the output was determined to be approximately independent of the temperature in the wide range from 773 to 1,073 K. View Full-Text
Keywords: air-to-fuel ratio; automobile; gas sensor; solid electrolyte; resistive-type air-to-fuel ratio; automobile; gas sensor; solid electrolyte; resistive-type
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Izu, N.; Nishizaki, S.; Shin, W.; Itoh, T.; Nishibori, M.; Matsubara, I. Resistive Oxygen Sensor Using Ceria-Zirconia Sensor Material and Ceria-Yttria Temperature Compensating Material for Lean-Burn Engine. Sensors 2009, 9, 8884-8895.

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