Application of pyrolyzed Cobalt (II) tetramethoxyphenyl porphyrin based catalyst in metal-air systems and enzyme electrodes

Boukoureshtlieva, Reneta; Milusheva, Yovka; Popov, I Konstantin; Trifonova, Atanaska; Momchilov, A.

doi:10.1016/j.electacta.2020.136472

Cited by 7 publications

(7 citation statements)

References 33 publications

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“…32 In case of MFCs, the lower current densities observed are probably due to the biochemical processes taking place at the anode. 33 Similar behaviour in the electrical characteristics were observed during the experiments for both types of cells studied. Anode and cathode were immersed into the cell, and after 24 h both equilibrium potentials were measured.…”

Section: Resultssupporting

confidence: 73%

Alternative Biological Process for Livestock Manure Utilization and Energy Production Using Microbial Fuel Cells

Koleva

Stankulov

Boukoureshtlieva

et al. 2022

J. Electrochem. Soc.

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Carbon-based porous materials are most widely used for mMicrobial fuel cells based on their unique properties facilitating and allowing the development of high surface area electrode. The electrochemically active layer of the electrode was prepared using two types of catalysts: activated carbon (Norit NK) and activated carbon promoted with CoTMPP (AC/CoTMPP). Mobilization of phosphate ions in the liquid phase was observed during the process of livestock manure treatment. From 20 mg l-1 initially, the concentration of dissolved phosphates reached 100 mg l-1 after 96 hours. Increased concentration of ammonium ions in the medium was also observed, indicating ongoing anaerobic degradation and mineralization of the organic matter. The processes taking place in the bio electrochemical reactor used result in recovery of nutrients and production of energy. A maximum current density of 140 µА cm-2 was reached during the MFC operation. The chemical oxygen demand removal rates were relatively high (above 2g O2/L/h) for both differently catalyzed cathode configurations. As widely reported elsewhere, the electrochemical results confirm that a gas-diffusion electrode using activated carbon catalyst is very well suited as a positive electrode for use in bio electrochemical systems.

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Section: Resultssupporting

confidence: 73%

Alternative Biological Process for Livestock Manure Utilization and Energy Production Using Microbial Fuel Cells

Koleva

Stankulov

Boukoureshtlieva

et al. 2022

J. Electrochem. Soc.

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“…Another type of data, which at this stage is part of the catalogue, was derived from the Automatic recording weather station (AWG), figure 3, presented in detail in table 5. The data were generated from an in situ study (field data) done by Iliyan Popov and Boris Shirov by OXYMET 24,25,26 .…”

Section: Automatic Recording Weather Station (Awg) Datamentioning

confidence: 99%

“…Figure 3 AWG with Environmental battery 24, 25, 26 Table 5 Data and parameters that the AWG generates 24,25,26 .…”

Section: Automatic Recording Weather Station (Awg) Datamentioning

confidence: 99%

Monitoring of renewable energy sources with remote sensing, open data, and field data in Bulgaria

Spasova,

Dancheva,

Avetisyan

et al. 2023

Image and Signal Processing for Remote Sensing XXIX

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Monitoring through satellite data, in situ (including spectrometer data, GPS, thermal camera) , open data, data from various devices and Unmanned Aerial Vehicles (UAV) in the selected anthropogenic sites is of extremely high ecological importance for tracking natural processes, the consequences of climate changes and the creation of a useful model for the analysis of spectral characteristics based on machine learning. The timeliness of the data and the spatial extent of the observed objects allow satellite information to be reliable in monitoring and making predictions about the risk and potential risk of natural disasters, rise of average air temperatures and anthropogenic pollution. The sites were pre-marked based on open data from Non-Governmental Organizations (NGOs) and administration. Data from the Multispectral Instrument (MSI) of the Sentinel 2 platform and SAR of the European Space Agency's Copernicus program, spectrometer (380 nm to 780 nm) and drone data were used. Landsat sensors and data from Sentinel 3 (EUMETSAT) were used to calculate the surface temperature of renewable energy sites such as photovoltaic parks. Data from different years were used in order to track the studied territories according to NUTS2. The result is the development of a useful hybrid model for spectral analysis and tracking of spatial dynamics and surface changes of objects of interest based on satellite and field surveys. Data from the ground mobile and autonomous weather station AWG 1, powered by an environmentally friendly magnesium-air battery was improved specifically for the project. Another important task is the creation of an energy atlas for the benefit of the Earth's Digital Twins. The data is part of an open data catalog of the NGO Eco Global Monitoring TA2.

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“…However, a key disadvantage of manganese oxides as cathode catalysts is their low conductivity. To solve this problem, the commonly used method is to combine manganese oxide and a carrier with good conductivity, such as porous carbon and graphene [97] . Li et al reported Mn 3 O 4 nanowires/three-dimensional graphene/single-walled carbon nanotube (Mn 3 O 4 NWs/3D GN/SWCNT) electrocatalysts [94] .…”

Section: Types Of Catalysts For Primary Mg-air Batteriesmentioning

confidence: 99%

“…Therefore, the carbon material itself is not a good oxygen reduction catalyst. Despite this, due to high specific surface area and excellent conductivity, carbon materials are excellent catalyst carriers that can produce synergistic catalytic effects with noble metals [90][91][92] and transition metal compounds [94,97] deposited on the surface. Furthermore, nitrogen-doped carbon materials also have relatively high ORR activity, probably because the dissociation energy of O 2 molecular can be reduced by the nitrogen atoms [103,104] .…”

Section: Types Of Catalysts For Primary Mg-air Batteriesmentioning

confidence: 99%

Challenges and prospects of Mg-air batteries: a review

Wang¹,

Sun²,

Ren³

et al. 2022

Energy Mater

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Mg-air batteries, with their intrinsic advantages such as high theoretical volumetric energy density, low cost, and environmental friendliness, have attracted tremendous attention for electrical energy storage systems. However, they are still in an early stage of development and suffer from large voltage polarization and poor cycling performance. At present, Mg-air batteries with high rechargeability remain difficult to achieve, mainly because the discharge products [Mg(OH)2, MgO and MgO2] are thermodynamically and kinetically difficult to decompose at moderate voltage ranges. Therefore, it is crucial to optimize the reaction paths and kinetics from the electrodes to the batteries via the combination of materials design and first-principles calculations. In this review, remarkable progress is highlighted regarding the currently used materials for Mg-air batteries, including anodes, electrolytes, and cathodes. In addition, the corresponding reaction mechanisms are comprehensively surveyed. Finally, future perspectives for rechargeable Mg-air batteries with decreased voltage polarization and improved cycling performance are also described for further practical applications.

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Application of pyrolyzed Cobalt (II) tetramethoxyphenyl porphyrin based catalyst in metal-air systems and enzyme electrodes

Cited by 7 publications

References 33 publications

Alternative Biological Process for Livestock Manure Utilization and Energy Production Using Microbial Fuel Cells

Alternative Biological Process for Livestock Manure Utilization and Energy Production Using Microbial Fuel Cells

Monitoring of renewable energy sources with remote sensing, open data, and field data in Bulgaria

Challenges and prospects of Mg-air batteries: a review

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