Hydrogen generation in additively manufactured membraneless microfluidic electrolysis cell: Performance evaluation and accelerated stress testing

De, Biswajit S.; Singh, Aditya; Dixit, Ram; Khare, Neeraj; Elias, Anastasia L.; Basu, Suddhasatwa

doi:10.1016/j.cej.2022.139433

Cited by 8 publications

(3 citation statements)

References 71 publications

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“…31 Samir De et al introduced a microelectrolyzer with a distinctive 'Y-shaped' design, featuring three parallel channels and porous electrodes, enabling laminar flow of generated H 2 and O 2 through the electrodes and subsequent storage in outer channels. 32 Rarotra et al illustrated a T-shaped membraneless microreactor with Cu electrodes connected to a photovoltaic module, employing soft lithography. 26 In a recent investigation, Rox et al presented a membraneless electrolyzer produced via 3D printing to examine bubble dynamics on porous electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, another study elucidated a ‘Y-shaped’ membraneless microfluidic fuel cell, where two liquids undergo laminar flow to harvest power at room temperature . Samir De et al introduced a microelectrolyzer with a distinctive ‘Y-shaped’ design, featuring three parallel channels and porous electrodes, enabling laminar flow of generated H 2 and O 2 through the electrodes and subsequent storage in outer channels . Rarotra et al illustrated a T-shaped membraneless microreactor with Cu electrodes connected to a photovoltaic module, employing soft lithography .…”

Section: Introductionmentioning

confidence: 99%

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Nanoplasmonic Microfluidic Electrolyzer for Membraneless Hydrogen Production

Mahanta,

Gupta,

Parmar

et al. 2024

Energy Fuels

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Electro-oxidation of alkaline ethanol solutions has emerged as a promising alternative for hydrogen production, overcoming limitations associated with traditional membranebased proton-exchange and alkaline electrolyzers. In the present study, a T-shaped portable microfluidic electrolyzer has been fabricated, which effectively splits alkaline ethanol using gold nanoparticles (Au NPs) and nanorods (Au NRs). Simulated solar irradiation generates a high-intensity electric field across screenprinted electrodes (SPE) integrated with the microfluidic channel at a significantly low voltage to electrolyze the alkaline ethanol and generate hydrogen. The presence of Au NPs/NRs in the electrolyte further enhances the field due to localized surface plasmon resonance (LSPR) and increased electrical conductance of the electrolyte. Electrolytes with Au NPs show superior photoresponsive properties, a lower bandgap (E g : 3.37 eV), higher current density (e.g., 7,850 A m −2 ), and increased hydrogen (H 2 ) production (∼252.8 μmol h −1 ) capacity, highlighting the advantage of Au NPs over Au NRs. A prototype featuring 176 such units demonstrates the capacity of a continuous production of 1 L of H 2 per hour at a remarkably low capital investment, which highlights the potential of this concept for a μ-VLSI.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanoplasmonic Microfluidic Electrolyzer for Membraneless Hydrogen Production

Mahanta,

Gupta,

Parmar

et al. 2024

Energy Fuels

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“…Due to its high calorific value of combustion and cleaning product (H 2 O), hydrogen is the ideal clean energy in the future. Water electrolysis is an effective method for hydrogen production [1,2]. Hydrogen production from electrolysis water is the decomposition reaction of water under a certain voltage, which consists of OER and HER two half reactions.…”

Section: Introductionmentioning

confidence: 99%

Constructing Molybdenum Phosphide@Cobalt Phosphide Heterostructure Nanoarrays on Nickel Foam as a Bifunctional Electrocatalyst for Enhanced Overall Water Splitting

2023

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The construction of multi-level heterostructure materials is an effective way to further the catalytic activity of catalysts. Here, we assembled self-supporting MoS2@Co precursor nanoarrays on the support of nickel foam by coupling the hydrothermal method and electrostatic adsorption method, followed by a low-temperature phosphating strategy to obtain Mo4P3@CoP/NF electrode materials. The construction of the Mo4P3@CoP heterojunction can lead to electron transfer from the Mo4P3 phase to the CoP phase at the phase interface region, thereby optimizing the charge structure of the active sites. Not only that, the introduction of Mo4P3 will make water molecules preferentially adsorb on its surface, which will help to reduce the water molecule decomposition energy barrier of the Mo4P3@CoP heterojunction. Subsequently, H* overflowed to the surface of CoP to generate H2 molecules, which finally showed a lower water molecule decomposition energy barrier and better intermediate adsorption energy. Based on this, the material shows excellent HER/OER dual-functional catalytic performance under alkaline conditions. It only needs 72 mV and 238 mV to reach 10 mA/cm2 for HER and OER, respectively. Meanwhile, in a two-electrode system, only 1.54 V is needed to reach 10 mA/cm2, which is even better than the commercial RuO2/NF||Pt/C/NF electrode pair. In addition, the unique self-supporting structure design ensures unimpeded electron transmission between the loaded nanoarray and the conductive substrate. The loose porous surface design is not only conducive to the full exposure of more catalytic sites on the surface but also facilitates the smooth escape of gas after production so as to improve the utilization rate of active sites. This work has important guiding significance for the design and development of high-performance bifunctional electrolytic water catalysts.

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Challenges with Sustainable Green Hydrogen Production: Role of Materials, Design, Multi-scale Modeling, and Up-Scaling

Rohilla,

Kumar

2024

Energy, Environment, and Sustainability

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Hydrogen generation in additively manufactured membraneless microfluidic electrolysis cell: Performance evaluation and accelerated stress testing

Cited by 8 publications

References 71 publications

Nanoplasmonic Microfluidic Electrolyzer for Membraneless Hydrogen Production

Nanoplasmonic Microfluidic Electrolyzer for Membraneless Hydrogen Production

Constructing Molybdenum Phosphide@Cobalt Phosphide Heterostructure Nanoarrays on Nickel Foam as a Bifunctional Electrocatalyst for Enhanced Overall Water Splitting

Challenges with Sustainable Green Hydrogen Production: Role of Materials, Design, Multi-scale Modeling, and Up-Scaling

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