HYDROGEN SENSITIVE COMPOSITE MATERIAL, HYDROGEN GAS SENSOR, AND SENSOR FOR DETECTING HYDROGEN AND OTHER GASES WITH IMPROVED BASELINE RESISTANCE

摘要

A hydrogen sensitive composite sensing material based on cerium oxide wit h or without additives to enhance sensitivity to hydrogen, reduce cross-sens itivities to interfering gases, or lower the operating temperature of the se nsor, and a device incorporating these hydrogen sensitive composite material s including a support, electrodes applied to the support, and a coating of h ydrogen sensitive composite material applied over the electroded surface. Th e sensor may have in integral heater. The sensor may have a tubular geometry with the heater being inserted within the tube. A gas sensor device may inc lude a support, electrodes applied to the support, and a dual sensor element to cancel unwanted effects on baseline resistance such as those resulting f rom atmospheric temperature changes. The hydrogen sensitive composite materi al or other gas sensitive materials may be used in the dual element gas sens or device.