Highly selective CO sensor using indium oxide doubly promoted by cobalt oxide and gold

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1837710· OSTI ID:516888

Yamaura, Hiroyuki; Tamaki, Jun; Miura, Norio; Yamazoe, Noboru ^[1]; Moriya, Koji ^[2]

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1. Kyushu Univ., Kasuga, Fukuoka (Japan)
2. Osaka Gas Co., Ltd. (Japan). Research and Development Center

Among the In{sub 2}O{sub 3}-based elements loaded with each of 12 metal oxides [0.5 weight percent (w/o) each], the Co{sub 3}O{sub 4}-added element was outstanding in sensitivity and selectiveness to CO at 250 C. Remarkably the sensing properties of this element could be increased further by the addition of Au (0.04 W/o). The element thus obtained, Au (0.04 w/o)-Co (0.5 w/o)-In{sub 2}O{sub 3}, gave excellent characteristics in sensitivity to CO, selectivity to CO against H{sub 2} and other selected gases, and responses rate at 250 C, giving promise of being applied as a CO sensor for safety control of gas appliances.

• Sponsoring Organization: USDOE
• OSTI ID: 516888
• Journal Information: Journal of the Electrochemical Society, Vol. 144, Issue 6; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
GAS APPLIANCES
MONITORS
CARBON MONOXIDE
INDIUM OXIDES
COBALT OXIDES
GOLD
GAS ANALYSIS
SAFETY
INDOOR AIR POLLUTION
AIR POLLUTION MONITORING