A Kw-Scale Integrated System for On-Demand Hydrogen Generation Using NaBH&lt;sub&gt;4&lt;/sub&gt; Solution and a Low-Cost Catalyst

Pashaie, Pouya; Shakeri, Mohsen; Miremadeddin, Reza

doi:10.4028/www.scientific.net/amr.664.795

Cited by 1 publication

(1 citation statement)

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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%

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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