bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)

156.504

2007 e-Impact Factor

25 Top Downloaded Articles

Journal Subscription 2008

Editorial Calendar 2008

Submit an Article

Editorial Board

Current Issue

Sensors and Transducers journal's cover

 

Sensors & Transducers Journal 2007

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents

2006 S&T e-Digest Contents

 

Best Articles 2007

 

 

 

Vol. 97, Issue 10, October 2008, pp.55-63

 

 

Bullet

 

Producing Gas-selective Electrochemical Microsensors by Tuning Solid Electrolyte Composition

 

1Erika SHOEMAKER ELLIS, 2Michael C. VOGT

1206 Hyde Park Dr., Richardson, TX 75080

Tel.: 972/995-2421, fax: 972-995-5910

22400 Ivy Lane, Bloomington, MN 55431

Tel.: 630/915-1962

E-mail: e-shoemaker1@ti.com, doc_vogt@hotmail.com

 

 

Received: 8 September 2008   /Accepted: 22 October 2008   /Published: 31 October 2008

 

Abstract: Monolithic gas sensors, developed at Argonne National Laboratory, employed cyclic voltammetry measurement techniques, YSZ solid electrolyte electrochemical cells and K-nearest neighbor (neural) chemometrics techniques to sense multiple components in a gas mixture. These voltammetry-based devices detected most hydrocarbons, displayed no saturation effects and were functional from < 1 ppm to 100 % oxygen concentrations, but were not sensitive to carbon dioxide due to the lack of reactivity within the Pt electrodes. Investigations revealed that specific CO2 sensitivity could be introduced by adding tungsten stabilized bismuth oxide (WBO) to the solid electrolyte composition while maintaining the same basic sensor geometry and electrode configuration. The YSZ/WBO sensors are functional in a range of CO2 concentrations from low ppm to 100 %.

 

Keywords: O2, CO2, Thick-film microsensor, Solid electrolyte, Gas-phase voltammetry, WBO

 

 Acrobat reader logo Click <here> or title of paper to download the full pages article (1.32 Mb)

 

 

 

 


1999 - 2008 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.


Home - News - Links - Archives - Tools - Standardization - Patents - Marketplace - Projects - Wish List - Subscribe - Search - e-Shop - Membership

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Sensor Jobs - Site Map