New generation amperometric gas sensors

Lead Research Organisation: University of Oxford
Department Name: Oxford Chemistry


The need for measurements of chemical is ubiquitous. This project proposes entirely new concepts to transform the performance of electrochemical gas sensors - for which the world market is estimated at 1.5 billion annually, with applications in environmental monitoring, automotive emission control, industrial safety and medical treatment.Consultants Frost and Sullivan say 'a general demand from the end user is for an instrument that is smaler in size, cheaper in price, and veratile in functionality'. Electrochemical methods are widely used especially where low cost, compact and low power sensors are needed. Such sensors are also highly suitable where reliable, remote monitoring is needed. Illustrative examples of applications include CO detectors in smoke alarms, oxygen sensors, chlorine sensors used in water treatment, hydrogen sulphide and nitrogen dioxide sensors used in environmental monitoring and ozone sensors used in atmospheric sensing.Current electorchemical sensors were based on a design developed as long ago as 1956! Discussions with manufacturers and users of gas sensors have convinced the applicants of an urgent need for a new generation of amperometric sensors. It is the purpose of the work suggested in this proposal to provide these new sensors by using the special properties of liquids composed entirely of ions (charged particles) in combination with electrodes of the tiniest size possible to make much faster respondig sensors, much longer lived sensors, sensors which have no need for calibration and sensors which can be easily used at low and high temperatures.
Description Gas sensors are of wide importance in relation to safety, the environment and healthcare (e.g. anaesthesia). The findings have significantly improved the range of gases that can be detected as well as improving sensitivity, specificity and cost.
Exploitation Route Manufacturers of gas sensors will (are) employ(ing) the results.
Sectors Aerospace, Defence and Marine,Agriculture, Food and Drink,Chemicals,Energy,Environment,Healthcare

Description We have established major collaborators with (a) Schlumberger ( and (b) Honeywell ( to translate our findings into consumer products
Sector Aerospace, Defence and Marine,Agriculture, Food and Drink,Chemicals,Energy,Environment,Healthcare
Impact Types Societal,Economic