An electrochemical hydrogen meter for measuring hydrogen in sodium using a ternary electrolyte mixture

Sridharan, R.; Mahendran, K.H.; Nagaraj, S.; Gnanasekaran, T.; Periaswami, G.

doi:10.1016/s0022-3115(02)01550-7

Cited by 25 publications

(4 citation statements)

References 9 publications

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“…Electrochemical meters showed satisfactory performance down to ca. 60 ppb of hydrogen in sodium [19]. But at still lower hydrogen concentrations, output of these meters deviated from linearity as shown in Fig.…”

Section: Resultsmentioning

confidence: 94%

“…Electrolyte systems based on SrH 2 -SrBr 2 -LiBr also would not be useful since LiBr-SrBr 2 has an eutectic temperature of 434°C and the ternary system would also be based on a molten electrolyte at the operating temperature of the meter. DSC results of 70mol%LiCl-16mol%CaHCl-14mol%-CaCl 2 showed that upon addition of CaH 2 to the binary CaCl 2 -LiCl system, the eutectic temperature is brought down to $452°C and this electrolyte showed conductivity that is four orders higher than that of the binary electrolyte, namely CaCl 2 -20mol%CaHCl [19]. Electrochemical meters showed satisfactory performance down to ca.…”

Section: Resultsmentioning

confidence: 99%

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Investigations on the phase equilibria of some hydride ion conducting electrolyte systems and their application for hydrogen monitoring in sodium coolant

Joseph

Sujatha

Nagaraj

et al. 2005

Journal of Nuclear Materials

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Investigations on the phase equilibria of some hydride ion conducting electrolyte systems and their application for hydrogen monitoring in sodium coolant

Joseph

Sujatha

Nagaraj

et al. 2005

Journal of Nuclear Materials

Self Cite

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“…These hydrogen meters were designed and fabricated by the Liquid Metal and Structural Chemistry Division of the Indira Gandhi Centre for Atomic Research (IGCAR). The solubility of hydrogen in sodium at the cold trap temperature fixes the hydrogen concentration in the mini sodium loop during meter calibration [8] . The iron thimbles were machined from the stock of high purity soft iron bars.…”

Section: Details Of Echmmentioning

confidence: 99%

X-ray radiography for development of defect-free electrochemical hydrogen meter for sodium systems

Bagavathiappan¹,

Saravanan²,

Philip³

et al. 2006

Insight - Non-Destructive Testing and Condition Monitoring

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“…In recent years, significant progress has been achieved in solution processed CNT films, in which the semiconducting purity has been improved up to 99.99%. , It is just the time to develop compact CNT based H 2 sensors featuring high sensitivity and selectivity, as well as batch fabrication and low cost. Especially in some specialized applications, such as monitoring H 2 O leakage to the sodium in fast nuclear reactors, or hydrogen breath tests, ultra-highly sensitive compact H 2 sensors with the detection limit lower than 1 ppm and high response are required, and CNT film based H 2 sensor can be promoted to reach this level.…”

mentioning

confidence: 99%

Batch Fabrication of Ultrasensitive Carbon Nanotube Hydrogen Sensors with Sub-ppm Detection Limit

et al. 2018

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Carbon nanotube (CNT) has been considered as an ideal channel material for building highly sensitive gas sensors. However, the reported H sensors based on CNT always suffered from the low sensitivity or low production. We developed the technology to massively fabricate ultra-highly sensitive H sensors based on solution derived CNT network through comprehensive optimization of the CNT material, device structure, and fabrication process. In the H sensors, high semiconducting purity solution-derived CNT film sorted by poly[9-(1-octylonoyl)-9 H-carbazole-2,7-diyl](PCz) is used as the main channel, which is decorated with Pd nanoparticles as functionalization for capturing H. Meanwhile, Ti contacts are used to form a Schottky barrier for enhancing transferred charge-induced resistance change, and then a response of resistance change by 3 orders of magnitude is achieved at room temperature under the concentration of ∼311 ppm with a very fast response time of approximately 7 s and a detection limit of 890 ppb, which is the highest response to date for CNT H sensors and the very first time to show the sub-ppm detection for H at room temperature. Furthermore, the detection limit concentration can be improved to 89 ppb at 100 °C. The batch fabrication of CNT film H sensors with ultra-high sensitivity and high uniformity is ready to promote CNT devices to application for the first time in some specialized field.

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An electrochemical hydrogen meter for measuring hydrogen in sodium using a ternary electrolyte mixture

Cited by 25 publications

References 9 publications

Investigations on the phase equilibria of some hydride ion conducting electrolyte systems and their application for hydrogen monitoring in sodium coolant

Investigations on the phase equilibria of some hydride ion conducting electrolyte systems and their application for hydrogen monitoring in sodium coolant

X-ray radiography for development of defect-free electrochemical hydrogen meter for sodium systems

Batch Fabrication of Ultrasensitive Carbon Nanotube Hydrogen Sensors with Sub-ppm Detection Limit

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