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|Title:||Assessment of commercial micro-machined hydrogen sensors performance metrics for safety sensing applications|
|Authors:||EL MATABOULY Hatem; DOMINGUE Frederic; PALMISANO VALERIO; BRETT Lois; POST Matthew; RIVKIN Carl; BURGESS Robert; BUTTNER William|
|Citation:||INTERNATIONAL JOURNAL OF HYDROGEN ENERGY vol. 39 no. 9 p. 4664-4673|
|Publisher:||PERGAMON-ELSEVIER SCIENCE LTD|
|Type:||Articles in periodicals and books|
|Abstract:||Hydrogen sensors are increasingly recognized as safety enhancing components in applications where hydrogen is exploited as a clean energy carrier. The availability of low cost, reliable, high performance hydrogen sensors is critical for facilitating the widespread and safe deployment of hydrogen systems. Accordingly, new sensing element designs based on advanced manufacturing techniques are being developed. Using micro-machining techniques, miniaturized versions of conventional hydrogen gas sensing elements have already been introduced in the market, with the promise of lowcost and high performance sensing metrics. An assessment of commercial micromachined sensing elements relative to their conventional counterpart is presented in this paper. The results show that although some performance improvements were observed for commercial micro-machined sensors relative to their conventional counterparts, many micro-machined sensors were plagued with significant degradations. Furthermore, actual sensor performance, as determined by laboratory assessment often did not meet the manufacturer’s published specifications. This work verifies the sensing metrics improvements brought by the micro-technology as well as its shortcomings for guiding the end-user safety applications.|
|JRC Directorate:||Energy, Transport and Climate|
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