Development of NaBH4-Based Hydrogen Generator for Fuel Cell Unmanned Aerial Vehicles with Movable Fuel Cartridge

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

doi:10.1016/j.egypro.2019.01.443

Cited by 13 publications

(4 citation statements)

References 8 publications

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“…Although the initial temperature was slightly higher with both the pitch +30 and roll +45 compared to the pith -30 and roll -45 due to the power cut while changing the pitch angle, the temperature was cooled down and the terminal temperature was almost same. However, in the previous study [6], the system was operated ordinarily though the power supply was discontinued. In this part, the system was proven that the hydrogen was generated stably though the fuel was cornered one side.…”

Section: Performance Stability Under Pitch and Roll Changementioning

confidence: 99%

“…Lee et al suggested the hydrogen generation method from the NaBH4 in the solid state by injecting the hydrochloric acid (HCl) solution [5]. Kwon et al developed and evaluated a NaBH4-based hydrogen generator using this hydrogen generation method [6]. However, the performance evaluation of hydrogen generator was carried out at the constant hydrogen consumption rate.…”

Section: Introductionmentioning

confidence: 99%

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Performance Characteritics of Hydrogen Generator Using Sodium Borohydride Storage for Uninterrupted Power System

Soon-mo¹,

Kwon²,

Kim³

et al. 2020

Preprint

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Section: Performance Stability Under Pitch and Roll Changementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Characteritics of Hydrogen Generator Using Sodium Borohydride Storage for Uninterrupted Power System

Soon-mo¹,

Kwon²,

Kim³

et al. 2020

Preprint

Self Cite

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“…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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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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“…The operating time of power sources involving fuel cells depends on their level of electric power consumption and the amount of hydrogen stored [11][12][13]. For UAV applications based on quiet operation, improved safety, and precise power management and control, which involve the coverage of longer distances and superior performance in harsh conditions, and also considering the reduction of pollutants and greenhouse gas emissions, the application of hydrogen in fuel cells for electrical propulsion appears to be preferred [14][15][16][17][18]. In drone applications, fuel cells are limited in their ability to provide the required power for maneuvers: take off, climbing or flight under variable atmospheric conditions.…”

Section: Introductionmentioning

confidence: 99%

Selected Aspects of Designing Modular PEMFC Stacks as Power Sources for Unmanned Aerial Vehicles

et al. 2021

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Two types of air-cooled modular polymer membrane fuel cells (PEMFC) stacks with full equipment were constructed and investigated as components of hybrid power sources. The first, a 2-kW PEMFC stack, was assembled from two 1-kW PEMFC modules electrically connected in parallel and compared with a commercial PEMFC stack built from one 2-kW PEMFC module. The second, a 500-W PEMFC stack, was assembled with three modules connected in parallel. It was found that the two-module PEMFC stack was capable of operation with nominal power of 2 kW. Analysis of the distribution of the air cooling system in both modules was also conducted. The two-module PEMFC stack reduced hydrogen consumption compared to the reference 2-kW PEMFC stack consisting of only one module. The elaborated two-module PEMFC stack was successfully tested in a propulsion system designed to supply an electrical engine with a propeller. The electrical performance of the three-module PEMFC stack was tested separately as well as in a hybrid system in connection with a 5 s Li-Pol battery. It was found that the elaborated PEMFC stack was capable of operation with nominal power of 500 W and variable rapid dynamic electrical loads. It was also successfully tested as a power source to supply servomechanisms and other auxiliary devices.

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Development of NaBH4-Based Hydrogen Generator for Fuel Cell Unmanned Aerial Vehicles with Movable Fuel Cartridge

Cited by 13 publications

References 8 publications

Performance Characteritics of Hydrogen Generator Using Sodium Borohydride Storage for Uninterrupted Power System

Performance Characteritics of Hydrogen Generator Using Sodium Borohydride Storage for Uninterrupted Power System

Hydrogen generator integrated with fuel cell for portable energy supply

Selected Aspects of Designing Modular PEMFC Stacks as Power Sources for Unmanned Aerial Vehicles

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