A solid state electrochemical gas sensor for detecting trace amounts of explosive materials and a method of detecting such explosives. The sensor has at least two electrodes. The at least two electrodes include a first catalytic electrode and a second catalytic electrode that are dissimilar and an electrolyte disposed between the first catalytic electrode and the second catalytic electrode. The sensor detects at least one gaseous specie emitted by the explosive material. At least one of a potential difference and a current flow is generated by at least one of catalytic and electrochemical reactions of the gaseous species emitted by the explosive material on one of the first catalytic electrode, second catalytic electrode, and the electrolyte. An explosive detection system that incorporates such sensors and methods is also described.
STATEMENT REGARDING FEDERAL RIGHTS
 This invention was made with government support under Contract No. W-7405-ENG-36, awarded by the U.S. Department of Energy. The government has certain rights in the invention.