Abstract:In this work, a H-type hydroquinone/O2 fuel cell was assembled and shows high energy density in neutral phosphate buffer solution at moderate temperature.
“…Wu et al reported the use of 2-D Ni(OH) 2 nanodisks deposited on multiwalled carbon nanotubes (MWCNTs) as an anodic catalyst of the hydroquinone biofuel cell (Figure 12a−d). 81 The poor conductivity of Ni(OH) 2 was complemented by bonding with MWCNTs, and the large specific surface area of MWCNTs significantly enhanced the ■ UTILIZATION OF EC-LOHC UNDER FUEL CELL SYSTEMS EC-LOHC has been utilized not only as a H 2 storage agent but also as a fuel for a low-temperature proton exchange membrane fuel cell (PEMFC). Among the various EC-LOHCs, only a few are directly applied to fuel cells, and most research has been focused on IPA/acetone.…”
Section: ■ Electrocatalysts For Ec-lohcmentioning
confidence: 99%
“…A suggested way to immobilize nanoparticles is secondary bonding between 2-D materials and carbon nanotubes. Wu et al reported the use of 2-D Ni(OH) 2 nanodisks deposited on multiwalled carbon nanotubes (MWCNTs) as an anodic catalyst of the hydroquinone biofuel cell (Figure a–d) . The poor conductivity of Ni(OH) 2 was complemented by bonding with MWCNTs, and the large specific surface area of MWCNTs significantly enhanced the hydroquinone electro-oxidation kinetics.…”
Section: Electrocatalysts For Ec-lohcmentioning
confidence: 99%
“…Cathode: Pt/MWCNTs/GCE. Reprinted with permission from ref . Copyright 2020 Royal Society of Chemistry.…”
Hydrogen has been chosen as an environmentally benign energy source to replace fossil-fuel-based energy systems. Since hydrogen is difficult to store and transport in its gaseous phase, thermochemical liquid organic hydrogen carriers (LOHCs) have been developed as one of the alternative technologies. However, the high temperature and pressure requirements of thermochemical LOHC systems result in huge energy waste and impracticality. This Perspective proposes electrochemical (EC)-LOHCs capable of more efficient, safer, and lower temperature and pressure hydrogen storage/utilization. To enable this technology, several EC-LOHC candidates such as isopropanol, phenolic compounds, and organic acids are described, and the latest research trends and design concepts of related homo/hetero-based electrocatalysts are discussed. In addition, we propose efficient fuel-cell-based systems that implement electrochemical (de)hydrogenation of EC-LOHCs and present prospects for relevant technologies.
“…Wu et al reported the use of 2-D Ni(OH) 2 nanodisks deposited on multiwalled carbon nanotubes (MWCNTs) as an anodic catalyst of the hydroquinone biofuel cell (Figure 12a−d). 81 The poor conductivity of Ni(OH) 2 was complemented by bonding with MWCNTs, and the large specific surface area of MWCNTs significantly enhanced the ■ UTILIZATION OF EC-LOHC UNDER FUEL CELL SYSTEMS EC-LOHC has been utilized not only as a H 2 storage agent but also as a fuel for a low-temperature proton exchange membrane fuel cell (PEMFC). Among the various EC-LOHCs, only a few are directly applied to fuel cells, and most research has been focused on IPA/acetone.…”
Section: ■ Electrocatalysts For Ec-lohcmentioning
confidence: 99%
“…A suggested way to immobilize nanoparticles is secondary bonding between 2-D materials and carbon nanotubes. Wu et al reported the use of 2-D Ni(OH) 2 nanodisks deposited on multiwalled carbon nanotubes (MWCNTs) as an anodic catalyst of the hydroquinone biofuel cell (Figure a–d) . The poor conductivity of Ni(OH) 2 was complemented by bonding with MWCNTs, and the large specific surface area of MWCNTs significantly enhanced the hydroquinone electro-oxidation kinetics.…”
Section: Electrocatalysts For Ec-lohcmentioning
confidence: 99%
“…Cathode: Pt/MWCNTs/GCE. Reprinted with permission from ref . Copyright 2020 Royal Society of Chemistry.…”
Hydrogen has been chosen as an environmentally benign energy source to replace fossil-fuel-based energy systems. Since hydrogen is difficult to store and transport in its gaseous phase, thermochemical liquid organic hydrogen carriers (LOHCs) have been developed as one of the alternative technologies. However, the high temperature and pressure requirements of thermochemical LOHC systems result in huge energy waste and impracticality. This Perspective proposes electrochemical (EC)-LOHCs capable of more efficient, safer, and lower temperature and pressure hydrogen storage/utilization. To enable this technology, several EC-LOHC candidates such as isopropanol, phenolic compounds, and organic acids are described, and the latest research trends and design concepts of related homo/hetero-based electrocatalysts are discussed. In addition, we propose efficient fuel-cell-based systems that implement electrochemical (de)hydrogenation of EC-LOHCs and present prospects for relevant technologies.
“…14–16 Among the various catalysts based on transition metals, Ni(OH) 2 materials had been proven to be promising catalyst for GOR due to their unique layered structure with large interlayer spacing that allows the electrolyte diffusion within the catalyst layers resulting in a boosted catalytic activity. 17–20 Glucose can be oxidized into gluconolactone in the presence of Ni(OH) 2 according to the following eqn (1) and (2): 14 Ni(OH) 2 + OH − → NiOOH + H 2 O + e − 2NiOOH + Glucose → gluconolactone + 2Ni(OH) 2 …”
Functionalized exfoliated graphite rods are a promising catalyst support for Ni(OH)2 nanoparticles, enhancing the electrocatalytic activity and stability towards glycerol oxidation reaction.
“…This divided cell is separated by a cation exchange membrane to shuttle ions as needed, ultimately allowing for the generation of current via the flow of electrons. Limited examples of fuel cells for comparable phenol oxidation have been reported, − particularly in the context of wastewater remediation, − and no such examples for cannabinoids or other comparably complex phenols are known. As a proof-of-concept, we targeted the development of an H-Cell-type fuel cell, as shown in Figure b.…”
We report the development of a current-producing H-Cell that relies on the oxidation of Δ 9 -tetrahydrocannabinol (THC), which is the primary psychoactive ingredient in marijuana. We found through systematic investigation of several variables that power densities could be improved 5-fold. Moreover, a real-time signal in a rudimentary THC sensor was observed at varying concentrations of THC. Given the growing societal interest in the detection of THC, our studies lay the foundation for the development of a marijuana breathalyzer.
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