首页|Development of cryo-adsorption hydrogen storage systems for ship's PEMFC power units
Development of cryo-adsorption hydrogen storage systems for ship's PEMFC power units
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NSTL
Elsevier
The paper focus on developing hydrogen storage systems for ship's fuel cell power units。 Activated carbon SAC03， MIL-101 and its composite JMU-01 formed by mixing the expanded natural graphite (ENG) in 10 wt% were selected。 Adsorption data of hydrogen were measured at a temperature range 77。15 K-87。15 K within pressure 0-6 MPa。 Accuracies of results predicted by Toth and Dubinin-Astakhov (DA) equations were evaluated， the isosteric heat of adsorption and the interaction potential were then determined。 A conformable vessel that can meet the fuel consumption required by 7。5 kW PEMFC was employed charge and discharge tests at ambient temperature and 77。15 K。 Results show that， the isosteric heats of hydrogen adsorption on the SAC-03， MIL-101 and JMU-01 are 4。09 kJ center dot mol- 1-1。43 kJ center dot mol-1， 4。20 kJ center dot mol- 1-1。89 kJ center dot mol-1 and 4。19 kJ center dot mol- 1-2。20 kJ center dot mol-1， interaction potential between hydrogen molecules and SAC-03 and MIL-101 are 32。48 K center dot k and 41。09 K center dot k。 Results also reveal that the desorption ratio (DR) of SAC-03， MIL-101 and JMU-01 at ambient/77。15 K temperature are respectively 0。83/0。85， 0。74/0。81， 0。85/0。85， and the mean usable capacity ratio (UCR) is respective about 6。55/1。36， 6。08/1。32， 6。02/1。31。 It suggests that addition of ENG is beneficial to improving the DR of the adsorbent but has a negative effect on the UCR of the storage vessel， and cryo-adsorption of hydrogen on MOFs is more promising than activated carbons。
HydrogenMOFsActivated carbonAdsorptionCharge and dischargeMETAL-ORGANIC FRAMEWORKSADSORBENT STORAGEHEATEQUILIBRIUMGAS
Zhang Xuan、Zheng Qingrong、He Hong-zhou、Zhang Zhong-gang、Sun Di
NSTL
Elsevier
