Development of a high-storage-density hydrogen generator using solid-state NaBH4 as a hydrogen source for unmanned aerial vehicles

Kwon, Soon-mo; Kim, Myoung Jin; Kang, Shinuang; Kim, Taegyu

doi:10.1016/j.apenergy.2019.113331

Cited by 44 publications

(15 citation statements)

References 16 publications

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“…Despite numerous publications on hydrogen generation from NaBH 4 for FCs, only a limited number of papers have described the pilot (hydrogen generators and power systems) devices [17][18][19][20][21][22][23][24][25][26][27]. Below, we will briefly review some of them.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen generator integrated with fuel cell for portable energy supply

et al. 2022

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An autonomous power supply device based on a 30 W fuel cell (FC) stack and a hydrolysis-type hydrogen generator were developed. Creation of this device included construction of a unit for hydrogen generation, development of an electronic control unit for the operation of the device, testing and optimizing the overall performance. The hydrolysis of NaBH4 was catalyzed by Pt-based catalysts and was studied for different reactor configurations and reagent concentrations. The flat type of the reactor, Pt-catalyst deposited on cordierite as a support and 10 % solution of NaBH4 proved to be the most efficient when generating H2 for the use in the 30W FC. A developed electronic control unit effectively regulates the hydrolysis reaction rate and provides the required hydrogen supply to the FC. A Li-ion battery being used to start the work of the developed system. One important feature of the developed electronic system is the use of the supercapacitors enabling smoothening of the periodic variations of the generated power. The created hydrolysis unit integrated with the FC provides stable power supply for at least 9 hours from 1 refueling (Uconst = 12 V, I = 0-2.5 A, Nominal Power = 30 W). The specific generated power of the system when accounting its weight and volume is similar to the analogues described in the reference data, while the electronic circuit enables its stable and efficient performance satisfying the consumer needs for autonomous energy supply when a stationary electrical grid is not available.

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Section: Introductionmentioning

confidence: 99%

“…In the papers [25,[27][28][29], the authors proposed a new hydrogen generator using a solid-state sodium borohydride as a hydrogen source. An acid solution could be injected onto the solid NaBH 4 to accelerate the hydrolysis without the use of a catalyst.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen generator integrated with fuel cell for portable energy supply

et al. 2022

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“…One of the challenges of using hydrogen fuel is hydrogen storage 4,5,6) . One of the promising hydrogen storage is sodium borohydride (NaBH4) 7,8,9,10) . The important thing in the storage of hydrogen as NaBH4 is the release of hydrogen from NaBH4 11) .…”

Section: Introductionmentioning

confidence: 99%

The Release of Hydrogen from NaBH_4 with Ni-Cu-B/Hydroxyapatite as The Catalyst

Nur¹,

Jumari²,

Dyartanti³

et al. 2022

Evergreen

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The environmentally friendly combustion of hydrogen makes hydrogen an ideal fuel. Research on the ideal hydrogen storage is still being carried out. one candidate for hydrogen storage is NaBH4. NaBH4 is hydrolyzed to release hydrogen. This work concerns the hydrolysis reaction of NaBH4 to release hydrogen with a catalyst Ni-Cu-B deposited on hydroxyapatite. The research went through 2 stages, namely catalyst synthesis and NaBH4 hydrolysis reaction. The catalyst synthesis was carried out electrochemically using a 2-compartment electrochemical cell at the certain current density and reaction time. The hydrolysis reaction was observed in a batch reactor at a constant temperature. The results showed that the most significant hydrogen release at room temperature occurred with a catalyst made at 160 mA/cm 2 for 90 minutes. The hydrogen release rate ranged from 435 to 1600 mL H2/g catalyst/min. The resulting equation for the reaction rate constant as a function of temperature is k = 3.567 x 10 10 exp(8624.245/T).

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“…Eun et al designed a 100 W-level sodium-borohydride-hydrolysis-based PEMFC power system for unmanned aerial vehicles (UAV) and realized stable hydrogen producing for over 3 h [ 29 ]. Kwon et al used solid NaBH 4 as fuel and hydrochloric acid as the medium to inject into the reactor and realized 5.1% hydrogen production, which could work for UAVs [ 30 ]. Taegyu et al designed a high-efficiency UAV system based on the hybrid power system of a fuel cell and battery that maintained the continuous flight of the UAV for 2 h [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

A Small Hybrid Power System of Photovoltaic Cell and Sodium Borohydride Hydrolysis-Based Fuel Cell

Deng

Zhang

et al. 2021

Micromachines

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Although the hybrid power system that combines a photovoltaic cell and a lithium-ion battery is increasingly mature and practical, long-lifetime auxiliary power will be still needed in severe weather conditions. A small-volume hydrogen–oxygen fuel cell system based on the hydrolysis of NaBH4 is designed. The fuel cell system contains a tiny hydrogen generator, a hydrogen cleaner, and a small fuel cell stack consisting of three units in series. The relationship between the amount of catalyst and output performance is discussed. The long-time discharging results indicate that the fuel cell system has high power capacity. The compact design allows the fuel cell system to integrate the structure with a photovoltaic cell and lithium-ion cell and forms a hybrid power system with a small package. The power management circuit for these power sources without logic devices is designed and tested. The control strategy selects the photovoltaic–battery subsystem as the primary power source, and the fuel cell subsystem works as the backup power source to handle the circumstance when the energy stored in the battery is exhausted. The test results show that the power management system could switch the power supply automatically and timely under various emergency conditions, and the output voltage remains stable all the time.

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Development of a high-storage-density hydrogen generator using solid-state NaBH4 as a hydrogen source for unmanned aerial vehicles

Cited by 44 publications

References 16 publications

Hydrogen generator integrated with fuel cell for portable energy supply

Hydrogen generator integrated with fuel cell for portable energy supply

The Release of Hydrogen from NaBH_4 with Ni-Cu-B/Hydroxyapatite as The Catalyst

A Small Hybrid Power System of Photovoltaic Cell and Sodium Borohydride Hydrolysis-Based Fuel Cell

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